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Prill K, Windsor Reid P, Pilgrim D. Heart Morphogenesis Requires Smyd1b for Proper Incorporation of the Second Heart Field in Zebrafish. Genes (Basel) 2025; 16:52. [PMID: 39858599 PMCID: PMC11764850 DOI: 10.3390/genes16010052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2024] [Revised: 12/20/2024] [Accepted: 12/31/2024] [Indexed: 01/27/2025] Open
Abstract
Background/Objectives: Abnormal development of the second heart field significantly contributes to congenital heart defects, often caused by disruptions in tightly regulated molecular pathways. Smyd1, a gene encoding a protein with SET and MYND domains, is essential for heart and skeletal muscle development. Mutations in SMYD1 result in severe cardiac malformations and misregulation of Hand2 expression in mammals. This study examines the role of Smyd1b in zebrafish cardiac morphogenesis to elucidate its function and the mechanisms underlying congenital heart defects. Methods: Smyd1b (still heart) mutant embryos were analyzed for cardiac defects, and changes in gene expression related to heart development using live imaging, in situ hybridization, quantitative PCR and immunofluorescent comparisons and analysis. Results: Smyd1b mutants displayed severe cardiac defects, including failure to loop, severe edema, and an expansion of cardiac jelly linked to increased has2 expression. Additionally, the expression of key cardiac transcription factors, such as gata4, gata5, and nkx2.5, was notably reduced, indicating disrupted transcriptional regulation. The migration of cardiac progenitors was impaired and the absence of Islet-1-positive cells in the mutant hearts suggests a failed contribution of SHF progenitor cells. Conclusions: These findings underscore the essential role of Smyd1b in regulating cardiac morphogenesis and the development of the second heart field. This study highlights the potential of Smyd1b as a key factor in understanding the genetic and molecular mechanisms underlying congenital heart defects and cardiac development.
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Affiliation(s)
- Kendal Prill
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (K.P.); (P.W.R.)
- Department of Molecular and Cellular Biology, University of Guelph, Guelph, ON N1G 1Y2, Canada
| | - Pamela Windsor Reid
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (K.P.); (P.W.R.)
- Department of Biological Science, MacEwan University, Edmonton, AB T5J 4S2, Canada
| | - Dave Pilgrim
- Department of Biological Sciences, University of Alberta, Edmonton, AB T6G 2E9, Canada; (K.P.); (P.W.R.)
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2
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Li Y, Du J, Deng S, Liu B, Jing X, Yan Y, Liu Y, Wang J, Zhou X, She Q. The molecular mechanisms of cardiac development and related diseases. Signal Transduct Target Ther 2024; 9:368. [PMID: 39715759 DOI: 10.1038/s41392-024-02069-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Revised: 09/28/2024] [Accepted: 11/04/2024] [Indexed: 12/25/2024] Open
Abstract
Cardiac development is a complex and intricate process involving numerous molecular signals and pathways. Researchers have explored cardiac development through a long journey, starting with early studies observing morphological changes and progressing to the exploration of molecular mechanisms using various molecular biology methods. Currently, advancements in stem cell technology and sequencing technology, such as the generation of human pluripotent stem cells and cardiac organoids, multi-omics sequencing, and artificial intelligence (AI) technology, have enabled researchers to understand the molecular mechanisms of cardiac development better. Many molecular signals regulate cardiac development, including various growth and transcription factors and signaling pathways, such as WNT signaling, retinoic acid signaling, and Notch signaling pathways. In addition, cilia, the extracellular matrix, epigenetic modifications, and hypoxia conditions also play important roles in cardiac development. These factors play crucial roles at one or even multiple stages of cardiac development. Recent studies have also identified roles for autophagy, metabolic transition, and macrophages in cardiac development. Deficiencies or abnormal expression of these factors can lead to various types of cardiac development abnormalities. Nowadays, congenital heart disease (CHD) management requires lifelong care, primarily involving surgical and pharmacological treatments. Advances in surgical techniques and the development of clinical genetic testing have enabled earlier diagnosis and treatment of CHD. However, these technologies still have significant limitations. The development of new technologies, such as sequencing and AI technologies, will help us better understand the molecular mechanisms of cardiac development and promote earlier prevention and treatment of CHD in the future.
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Affiliation(s)
- Yingrui Li
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jianlin Du
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Songbai Deng
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Bin Liu
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaodong Jing
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yuling Yan
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yajie Liu
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jing Wang
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Xiaobo Zhou
- Department of Cardiology, Angiology, Haemostaseology, and Medical Intensive Care, Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Germany; DZHK (German Center for Cardiovascular Research), Partner Site, Heidelberg-Mannheim, Mannheim, Germany
| | - Qiang She
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
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Feng H, Yang S, Zhang L, Zhu J, Li J, Yang Z. A new Prdm1-Cre line is suitable for studying the second heart field development. Dev Biol 2024; 514:78-86. [PMID: 38880275 DOI: 10.1016/j.ydbio.2024.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 06/11/2024] [Accepted: 06/12/2024] [Indexed: 06/18/2024]
Abstract
The second heart field (SHF) plays a pivotal role in heart development, particularly in outflow tract (OFT) morphogenesis and septation, as well as in the expansion of the right ventricle (RV). Two mouse Cre lines, the Mef2c-AHF-Cre (Mef2c-Cre) and Isl1-Cre, have been widely used to study the SHF development. However, Cre activity is triggered not only in the SHF but also in the RV in the Mef2c-Cre mice, and in the Isl1-Cre mice, Cre activation is not SHF-specific. Therefore, a more suitable SHF-Cre line is desirable for better understanding SHF development. Here, we generated and characterized the Prdm1-Cre knock-in mice. In comparison with Mef2c-Cre mice, the Cre activity is similar in the pharyngeal and splanchnic mesoderm, and in the OFT of the Prdm1-Cre mice. Nonetheless, it was noticed that Cre expression is largely reduced in the RV of Prdm1-Cre mice compared to the Mef2c-Cre mice. Furthermore, we deleted Hand2, Nkx2-5, Pdk1 and Tbx20 using both Mef2c-Cre and Prdm1-Cre mice to study OFT morphogenesis and septation, making a comparison between these two Cre lines. New insights were obtained in understanding SHF development including differentiation into cardiomyocytes in the OFT using Prdm1-Cre mice. In conclusion, we found that Prdm1-Cre mouse line is a more appropriate tool to monitor SHF development, while the Mef2c-Cre mice are excellent in studying the role and function of the SHF in OFT morphogenesis and septation.
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Affiliation(s)
- Haiyue Feng
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Nanjing University Medical School, Nanjing, China
| | - Suming Yang
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China
| | - Lijun Zhang
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Nanjing University Medical School, Nanjing, China
| | - Jingai Zhu
- Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing, China
| | - Jinsong Li
- State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.
| | - Zhongzhou Yang
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine, Nanjing University Medical School, Nanjing, China.
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4
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Abraham E, Volmert B, Roule T, Huang L, Yu J, Williams AE, Cohen HM, Douglas A, Megill E, Morris A, Stronati E, Fueyo R, Zubillaga M, Elrod JW, Akizu N, Aguirre A, Estaras C. A Retinoic Acid:YAP1 signaling axis controls atrial lineage commitment. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.07.11.602981. [PMID: 39026825 PMCID: PMC11257518 DOI: 10.1101/2024.07.11.602981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
Vitamin A/Retinoic Acid (Vit A/RA) signaling is essential for heart development. In cardiac progenitor cells (CPCs), RA signaling induces the expression of atrial lineage genes while repressing ventricular genes, thereby promoting the acquisition of an atrial cardiomyocyte cell fate. To achieve this, RA coordinates a complex regulatory network of downstream effectors that is not fully identified. To address this gap, we applied a functional genomics approach (i.e scRNAseq and snATACseq) to untreated and RA-treated human embryonic stem cells (hESCs)-derived CPCs. Unbiased analysis revealed that the Hippo effectors YAP1 and TEAD4 are integrated with the atrial transcription factor enhancer network, and that YAP1 is necessary for activation of RA-enhancers in CPCs. Furthermore, in vivo analysis of control and conditionally YAP1 KO mouse embryos (Sox2-cre) revealed that the expression of atrial lineage genes, such as NR2F2, is compromised by YAP1 deletion in the CPCs of the second heart field. Accordingly, we found that YAP1 is required for the formation of an atrial chamber but is dispensable for the formation of a ventricle, in hESC-derived patterned cardiac organoids. Overall, our findings revealed that YAP1 is a non-canonical effector of RA signaling essential for the acquisition of atrial lineages during cardiogenesis.
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Affiliation(s)
- Elizabeth Abraham
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Brett Volmert
- Institute for Quantitative Health Science and Engineering, Division of Developmental and Stem Cell Biology, Michigan State University, East Lansing, MI, USA
| | - Thomas Roule
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Ling Huang
- Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Jingting Yu
- Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - April E Williams
- Integrative Genomics and Bioinformatics Core, Salk Institute for Biological Studies, La Jolla, CA, USA
| | - Henry M Cohen
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Aidan Douglas
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Emily Megill
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Alex Morris
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Eleonora Stronati
- Department of Child and Adolescence Psychiatry, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Raquel Fueyo
- Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, USA
| | - Mikel Zubillaga
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - John W Elrod
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Naiara Akizu
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Aitor Aguirre
- Institute for Quantitative Health Science and Engineering, Division of Developmental and Stem Cell Biology, Michigan State University, East Lansing, MI, USA
| | - Conchi Estaras
- Department of Cardiovascular Sciences, Aging + Cardiovascular Discovery Center, Temple University, Lewis Katz School of Medicine, Philadelphia, PA, USA
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Hunter JD, Mesfin JM, Ahmed T, Chen A, Reimold K, Hancko A, Braden RL, Davis ME, Christman KL. Myocardial Matrix Hydrogels Mitigate Negative Remodeling and Improve Function in Right Heart Failure Model. JACC Basic Transl Sci 2024; 9:322-338. [PMID: 38559631 PMCID: PMC10978413 DOI: 10.1016/j.jacbts.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 01/04/2024] [Accepted: 01/08/2024] [Indexed: 04/04/2024]
Abstract
This study evaluates the effectiveness of myocardial matrix (MM) hydrogels in mitigating negative right ventricular (RV) remodeling in a rat model of RV heart failure. The goal was to assess whether a hydrogel derived from either the right or left ventricle could promote cardiac repair. Injured rat right ventricles were injected with either RV-or left ventricular-derived MM hydrogels. Both hydrogels improved RV function and morphology and reduced negative remodeling. This study supports the potential of injectable biomaterial therapies for treating RV heart failure.
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Affiliation(s)
- Jervaughn D. Hunter
- Shu Chien-Gene Lay Department of Bioengineering and Sanford Consortium for Regenerative Medicine, University of California-San Diego, San Diego, California, USA
| | - Joshua M. Mesfin
- Shu Chien-Gene Lay Department of Bioengineering and Sanford Consortium for Regenerative Medicine, University of California-San Diego, San Diego, California, USA
| | - Tanzeel Ahmed
- Shu Chien-Gene Lay Department of Bioengineering and Sanford Consortium for Regenerative Medicine, University of California-San Diego, San Diego, California, USA
| | - Alexander Chen
- Shu Chien-Gene Lay Department of Bioengineering and Sanford Consortium for Regenerative Medicine, University of California-San Diego, San Diego, California, USA
| | - Kate Reimold
- Shu Chien-Gene Lay Department of Bioengineering and Sanford Consortium for Regenerative Medicine, University of California-San Diego, San Diego, California, USA
| | - Arielle Hancko
- Shu Chien-Gene Lay Department of Bioengineering and Sanford Consortium for Regenerative Medicine, University of California-San Diego, San Diego, California, USA
| | - Rebecca L. Braden
- Shu Chien-Gene Lay Department of Bioengineering and Sanford Consortium for Regenerative Medicine, University of California-San Diego, San Diego, California, USA
| | - Michael E. Davis
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia, USA
| | - Karen L. Christman
- Shu Chien-Gene Lay Department of Bioengineering and Sanford Consortium for Regenerative Medicine, University of California-San Diego, San Diego, California, USA
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6
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Toro V, Jutras-Beaudoin N, Boucherat O, Bonnet S, Provencher S, Potus F. Right Ventricle and Epigenetics: A Systematic Review. Cells 2023; 12:2693. [PMID: 38067121 PMCID: PMC10705252 DOI: 10.3390/cells12232693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/08/2023] [Accepted: 11/17/2023] [Indexed: 12/18/2023] Open
Abstract
There is an increasing recognition of the crucial role of the right ventricle (RV) in determining the functional status and prognosis in multiple conditions. In the past decade, the epigenetic regulation (DNA methylation, histone modification, and non-coding RNAs) of gene expression has been raised as a critical determinant of RV development, RV physiological function, and RV pathological dysfunction. We thus aimed to perform an up-to-date review of the literature, gathering knowledge on the epigenetic modifications associated with RV function/dysfunction. Therefore, we conducted a systematic review of studies assessing the contribution of epigenetic modifications to RV development and/or the progression of RV dysfunction regardless of the causal pathology. English literature published on PubMed, between the inception of the study and 1 January 2023, was evaluated. Two authors independently evaluated whether studies met eligibility criteria before study results were extracted. Amongst the 817 studies screened, 109 studies were included in this review, including 69 that used human samples (e.g., RV myocardium, blood). While 37 proposed an epigenetic-based therapeutic intervention to improve RV function, none involved a clinical trial and 70 are descriptive. Surprisingly, we observed a substantial discrepancy between studies investigating the expression (up or down) and/or the contribution of the same epigenetic modifications on RV function or development. This exhaustive review of the literature summarizes the relevant epigenetic studies focusing on RV in human or preclinical setting.
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Affiliation(s)
| | | | | | | | | | - François Potus
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec (CRIUCPQ), Québec, QC G1V 4G5, Canada; (V.T.); (N.J.-B.); (O.B.); (S.B.); (S.P.)
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7
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Maven BEJ, Gifford CA, Weilert M, Gonzalez-Teran B, Hüttenhain R, Pelonero A, Ivey KN, Samse-Knapp K, Kwong W, Gordon D, McGregor M, Nishino T, Okorie E, Rossman S, Costa MW, Krogan NJ, Zeitlinger J, Srivastava D. The multi-lineage transcription factor ISL1 controls cardiomyocyte cell fate through interaction with NKX2.5. Stem Cell Reports 2023; 18:2138-2153. [PMID: 37863045 PMCID: PMC10679653 DOI: 10.1016/j.stemcr.2023.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 10/22/2023] Open
Abstract
Congenital heart disease often arises from perturbations of transcription factors (TFs) that guide cardiac development. ISLET1 (ISL1) is a TF that influences early cardiac cell fate, as well as differentiation of other cell types including motor neuron progenitors (MNPs) and pancreatic islet cells. While lineage specificity of ISL1 function is likely achieved through combinatorial interactions, its essential cardiac interacting partners are unknown. By assaying ISL1 genomic occupancy in human induced pluripotent stem cell-derived cardiac progenitors (CPs) or MNPs and leveraging the deep learning approach BPNet, we identified motifs of other TFs that predicted ISL1 occupancy in each lineage, with NKX2.5 and GATA motifs being most closely associated to ISL1 in CPs. Experimentally, nearly two-thirds of ISL1-bound loci were co-occupied by NKX2.5 and/or GATA4. Removal of NKX2.5 from CPs led to widespread ISL1 redistribution, and overexpression of NKX2.5 in MNPs led to ISL1 occupancy of CP-specific loci. These results reveal how ISL1 guides lineage choices through a combinatorial code that dictates genomic occupancy and transcription.
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Affiliation(s)
- Bonnie E J Maven
- Gladstone Institutes, San Francisco, CA, USA; Developmental and Stem Cell Biology PhD Program, University of California, San Francisco, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Casey A Gifford
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Melanie Weilert
- Stowers Institute for Medical Research, Kansas City, MO, USA
| | - Barbara Gonzalez-Teran
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Ruth Hüttenhain
- Gladstone Institutes, San Francisco, CA, USA; Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA, USA; Quantitative Biosciences Institute (QBI), University of California San Francisco, San Francisco, San Francisco, CA, USA
| | - Angelo Pelonero
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Kathryn N Ivey
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Kaitlen Samse-Knapp
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Wesley Kwong
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - David Gordon
- Gladstone Institutes, San Francisco, CA, USA; Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA, USA; Quantitative Biosciences Institute (QBI), University of California San Francisco, San Francisco, San Francisco, CA, USA
| | - Michael McGregor
- Gladstone Institutes, San Francisco, CA, USA; Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA, USA; Quantitative Biosciences Institute (QBI), University of California San Francisco, San Francisco, San Francisco, CA, USA
| | - Tomohiro Nishino
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Eyuche Okorie
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Sage Rossman
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Mauro W Costa
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA
| | - Nevan J Krogan
- Gladstone Institutes, San Francisco, CA, USA; Department of Cellular and Molecular Pharmacology, University of California San Francisco, San Francisco, CA, USA; Quantitative Biosciences Institute (QBI), University of California San Francisco, San Francisco, San Francisco, CA, USA
| | - Julia Zeitlinger
- Stowers Institute for Medical Research, Kansas City, MO, USA; Department of Pathology and Laboratory Medicine, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Deepak Srivastava
- Gladstone Institutes, San Francisco, CA, USA; Roddenberry Center for Stem Cell Biology at Gladstone, San Francisco, CA, USA; Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA, USA; Department of Pediatrics, UCSF School of Medicine, San Francisco, CA, USA.
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Single-cell transcriptomic profiling unveils dysregulation of cardiac progenitor cells and cardiomyocytes in a mouse model of maternal hyperglycemia. Commun Biol 2022; 5:820. [PMID: 35970860 PMCID: PMC9378651 DOI: 10.1038/s42003-022-03779-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 07/28/2022] [Indexed: 11/08/2022] Open
Abstract
Congenital heart disease (CHD) is the most prevalent birth defect, often linked to genetic variations, environmental exposures, or combination of both. Epidemiological studies reveal that maternal pregestational diabetes is associated with ~5-fold higher risk of CHD in the offspring; however, the causal mechanisms affecting cardiac gene-regulatory-network (GRN) during early embryonic development remain poorly understood. In this study, we utilize an established murine model of pregestational diabetes to uncover the transcriptional responses in key cell-types of the developing heart exposed to maternal hyperglycemia (matHG). Here we show that matHG elicits diverse cellular responses in E9.5 and E11.5 embryonic hearts compared to non-diabetic hearts by single-cell RNA-sequencing. Through differential-gene-expression and cellular trajectory analyses, we identify perturbations in genes, predominantly affecting Isl1+ second heart field progenitors and Tnnt2+ cardiomyocytes with matHG. Using cell-fate mapping analysis in Isl1-lineage descendants, we demonstrate that matHG impairs cardiomyocyte differentiation and alters the expression of lineage-specifying cardiac genes. Finally, our work reveals matHG-mediated transcriptional changes in second heart field lineage that elevate CHD risk by perturbing Isl1-GRN during cardiomyocyte differentiation. Gene-environment interaction studies targeting the Isl1-GRN in cardiac progenitor cells will have a broader impact on understanding the mechanisms of matHG-induced risk of CHD associated with diabetic pregnancies. ScRNA-seq of embryonic heart tissues from a mouse model of maternal hyperglycemia (matHG) provides further insight into how matHG disrupts heart development and perturbs second heart field derived cardiomyocyte differentiation.
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9
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Zeng ZH, Chen HX, Liu XC, Yang Q, He GW. Functional significance of novel variants of the MEF2C gene promoter in congenital ventricular septal defects. Am J Med Genet A 2022; 188:2397-2405. [PMID: 35719119 DOI: 10.1002/ajmg.a.62871] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/06/2022] [Accepted: 04/09/2022] [Indexed: 11/10/2022]
Abstract
Ventricular septal defect (VSD) is the most common congenital heart disease. Although the coding region of MEF2C is highly relevant to cardiac malformations, the role of MEF2C gene promoter variants in VSD patients has not been genetically investigated. We investigated the role of MEF2C gene promoter variants in 400 Han Chinese subjects (200 patients with isolated and sporadic VSD and 200 healthy controls). The promoter region of the MEF2C gene was sequenced that identified 10 variants. Expression vectors encompassing the variants and the firefly luciferase reporter gene plasmid (pGL3-basic) were constructed and subsequently transfected into HEK-293 cells. The luciferase activities were measured by Dual-luciferase reporter assay system. MEF2C gene promoter transcriptional activity was significantly reduced in 4 of the 10 variants in HEK-293 cells (P < 0.05). In addition, the JASPAR database was used to perform bioinformatics analysis, which showed that these variants disrupt the putative binding sites of transcription factors and affected the expression of MEF2C protein. This study for the first time identified the variants in the promoter of the MEF2C gene in Han Chinese population and revealed the role of these variants in the formation of VSD.
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Affiliation(s)
- Zhi-Hua Zeng
- The Institute of Cardiovascualr Diseases & Department of Cardiovascular surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College & Tianjin University, Tianjin, China
| | - Huan-Xin Chen
- The Institute of Cardiovascualr Diseases & Department of Cardiovascular surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College & Tianjin University, Tianjin, China
| | - Xiao-Cheng Liu
- The Institute of Cardiovascualr Diseases & Department of Cardiovascular surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College & Tianjin University, Tianjin, China
| | - Qin Yang
- The Institute of Cardiovascualr Diseases & Department of Cardiovascular surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College & Tianjin University, Tianjin, China
| | - Guo-Wei He
- The Institute of Cardiovascualr Diseases & Department of Cardiovascular surgery, TEDA International Cardiovascular Hospital, Chinese Academy of Medical Sciences & Graduate School of Peking Union Medical College & Tianjin University, Tianjin, China
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10
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Harvey DC, De Zoysa P, Toubat O, Choi J, Kishore J, Tsukamoto H, Kumar SR. Concomitant genetic defects potentiate the adverse impact of prenatal alcohol exposure on cardiac outflow tract maturation. Birth Defects Res 2022; 114:105-115. [PMID: 34859965 PMCID: PMC10033225 DOI: 10.1002/bdr2.1968] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Prenatal alcohol exposure (PAE) is associated with an increased incidence of congenital heart defects (CHD), in particular outflow tract (OFT) defects. However, the variability in the incidence of CHD following PAE has not been fully explored. We hypothesize that a concomitant, relevant genetic defect would potentiate the adverse effect of PAE and partially explain the variability of PAE-induced CHD incidence. METHODS The OFT is formed by the second heart field (SHF). Our PAE model consisted of two intraperitoneal injections (3 g/kg, separated by 6 hr) of 30% ethanol on E6.5 during SHF specification. The impact of genetic defects was studied by SHF-specific loss of Delta-like ligand 4 (Dll4), fibroblast growth factor 8 (Fgf8) and Islet1. RESULTS Acute PAE alone significantly increased CHD incidence (4% vs. 26%, p = .015) with a particular increase in OFT alignment defects, viz., double outlet right ventricle (0 vs. 9%, p = .02). In embryos with a SHF genetic defect, acute PAE significantly increased CHD incidence (14 vs. 63%, p < .001), including double outlet right ventricle (6 vs. 50%, p < .001) compared to controls. PAE (p = .01) and heterozygous loss of Dll4 (p = .04) were found to independently contribute to CHD incidence, while neither Islet1 nor Fgf8 defects were found to be significant. CONCLUSIONS Our model recapitulates the increased incidence of OFT alignment defects seen in the clinic due to PAE. The presence of a concomitant SHF genetic mutation increases the incidence of PAE-related OFT defects. An apparent synergistic interaction between PAE and the loss of DLL4-mediated Notch signaling in OFT alignment requires further analysis.
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Affiliation(s)
- Drayton C Harvey
- Department of Surgery, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Prashan De Zoysa
- Department of Surgery, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Omar Toubat
- Department of Surgery, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Jongkyu Choi
- Department of Medicine, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Jahnavi Kishore
- Department of Surgery, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
| | - Hidekazu Tsukamoto
- Department of Pathology, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
- Southern California Research Center for ALPD and Cirrhosis, Los Angeles, California, USA
- Greater Los Angeles VA Healthcare System, Los Angeles, California, USA
| | - S Ram Kumar
- Department of Surgery, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
- Department of Pediatrics, Keck School of Medicine of University of Southern California, Los Angeles, California, USA
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11
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Shewale B, Dubois N. Of form and function: Early cardiac morphogenesis across classical and emerging model systems. Semin Cell Dev Biol 2021; 118:107-118. [PMID: 33994301 PMCID: PMC8434962 DOI: 10.1016/j.semcdb.2021.04.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 04/27/2021] [Accepted: 04/28/2021] [Indexed: 12/31/2022]
Abstract
The heart is the earliest organ to develop during embryogenesis and is remarkable in its ability to function efficiently as it is being sculpted. Cardiac heart defects account for a high burden of childhood developmental disorders with many remaining poorly understood mechanistically. Decades of work across a multitude of model organisms has informed our understanding of early cardiac differentiation and morphogenesis and has simultaneously opened new and unanswered questions. Here we have synthesized current knowledge in the field and reviewed recent developments in the realm of imaging, bioengineering and genetic technology and ex vivo cardiac modeling that may be deployed to generate more holistic models of early cardiac morphogenesis, and by extension, new platforms to study congenital heart defects.
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Affiliation(s)
- Bhavana Shewale
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Nicole Dubois
- Department of Cell, Developmental and Regenerative Biology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Black Family Stem Cell Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
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12
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The Spatiotemporal Expression of Notch1 and Numb and Their Functional Interaction during Cardiac Morphogenesis. Cells 2021; 10:cells10092192. [PMID: 34571841 PMCID: PMC8471136 DOI: 10.3390/cells10092192] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/18/2021] [Accepted: 08/21/2021] [Indexed: 12/13/2022] Open
Abstract
Numb family proteins (NFPs), including Numb and Numblike (Numbl), are commonly known for their role as cell fate determinants for multiple types of progenitor cells, mainly due to their function as Notch inhibitors. Previous studies have shown that myocardial NFP double knockout (MDKO) hearts display an up-regulated Notch activation and various defects in cardiac progenitor cell differentiation and cardiac morphogenesis. Whether enhanced Notch activation causes these defects in MDKO is not fully clear. To answer the question, we examined the spatiotemporal patterns of Notch1 expression, Notch activation, and Numb expression in the murine embryonic hearts using multiple approaches including RNAScope, and Numb and Notch reporter mouse lines. To further interrogate the interaction between NFPs and Notch signaling activation, we deleted both Notch1 or RBPJk alleles in the MDKO. We examined and compared the phenotypes of Notch1 knockout, NFPs double knockout, Notch1; Numb; Numbl and RBPJk; Numb; Numbl triple knockouts. Our study showed that Notch1 is expressed and activated in the myocardium at several stages, and Numb is enriched in the epicardium and did not show the asymmetric distribution in the myocardium. Cardiac-specific Notch1 deletion causes multiple structural defects and embryonic lethality. Notch1 or RBPJk deletion in MDKO did not rescue the structural defects in the MDKO but partially rescued the defects of cardiac progenitor cell differentiation, cardiomyocyte proliferation, and trabecular morphogenesis. Our study concludes that NFPs regulate progenitor cell differentiation, cardiomyocyte proliferation, and trabecular morphogenesis partially through Notch1 and play more roles than inhibiting Notch1 signaling during cardiac morphogenesis.
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13
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George RM, Firulli AB. Epigenetics and Heart Development. Front Cell Dev Biol 2021; 9:637996. [PMID: 34026751 PMCID: PMC8136428 DOI: 10.3389/fcell.2021.637996] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 03/26/2021] [Indexed: 11/24/2022] Open
Abstract
Epigenetic control of gene expression during cardiac development and disease has been a topic of intense research in recent years. Advances in experimental methods to study DNA accessibility, transcription factor occupancy, and chromatin conformation capture technologies have helped identify regions of chromatin structure that play a role in regulating access of transcription factors to the promoter elements of genes, thereby modulating expression. These chromatin structures facilitate enhancer contacts across large genomic distances and function to insulate genes from cis-regulatory elements that lie outside the boundaries for the gene of interest. Changes in transcription factor occupancy due to changes in chromatin accessibility have been implicated in congenital heart disease. However, the factors controlling this process and their role in changing gene expression during development or disease remain unclear. In this review, we focus on recent advances in the understanding of epigenetic factors controlling cardiac morphogenesis and their role in diseases.
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Affiliation(s)
- Rajani M George
- Herman B Wells Center for Pediatric Research Department of Pediatrics, Anatomy, Biochemistry, and Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, United States
| | - Anthony B Firulli
- Herman B Wells Center for Pediatric Research Department of Pediatrics, Anatomy, Biochemistry, and Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, United States
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14
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Duong TB, Holowiecki A, Waxman JS. Retinoic acid signaling restricts the size of the first heart field within the anterior lateral plate mesoderm. Dev Biol 2021; 473:119-129. [PMID: 33607112 DOI: 10.1016/j.ydbio.2021.02.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/09/2021] [Accepted: 02/10/2021] [Indexed: 01/27/2023]
Abstract
Retinoic acid (RA) signaling is required to restrict heart size through limiting the posterior boundary of the vertebrate cardiac progenitor field within the anterior lateral plate mesoderm (ALPM). However, we still do not fully understand how different cardiac progenitor populations that contribute to the developing heart, including earlier-differentiating first heart field (FHF), later-differentiating second heart field (SHF), and neural crest-derived progenitors, are each affected in RA-deficient embryos. Here, we quantified the number of cardiac progenitors and differentiating cardiomyocytes (CMs) in RA-deficient zebrafish embryos. While Nkx2.5+ cells were increased overall in the nascent hearts of RA-deficient embryos, unexpectedly, we found that the major effect within this population was a significant expansion in the number of differentiating FHF CMs. In contrast to the expansion of the FHF, there was a progressive decrease in SHF progenitors at the arterial pole as the heart tube elongated. Temporal differentiation assays and immunostaining in RA-deficient embryos showed that the outflow tracts (OFTs) of the hearts were significantly smaller, containing fewer differentiated SHF-derived ventricular CMs and a complete absence of SHF-derived smooth muscle at later stages. At the venous pole of the heart, pacemaker cells of the sinoatrial node also failed to differentiate in RA-deficient embryos. Interestingly, genetic lineage tracing showed that the number of neural-crest derived CMs was not altered within the enlarged hearts of RA-deficient zebrafish embryos. Altogether, our data show that the enlarged hearts in RA-deficient zebrafish embryos are comprised of an expansion in earlier differentiating FHF-derived CMs coupled with a progressive depletion of the SHF, suggesting RA signaling determines the relative ratios of earlier- and later-differentiation cardiac progenitors within an expanded cardiac progenitor pool.
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Affiliation(s)
- Tiffany B Duong
- Molecular Genetics Graduate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA; Molecular Cardiovascular Biology Division and Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Andrew Holowiecki
- Molecular Cardiovascular Biology Division and Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Joshua S Waxman
- Molecular Cardiovascular Biology Division and Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA; Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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15
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Kemmler CL, Riemslagh FW, Moran HR, Mosimann C. From Stripes to a Beating Heart: Early Cardiac Development in Zebrafish. J Cardiovasc Dev Dis 2021; 8:17. [PMID: 33578943 PMCID: PMC7916704 DOI: 10.3390/jcdd8020017] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/05/2021] [Accepted: 02/07/2021] [Indexed: 12/18/2022] Open
Abstract
The heart is the first functional organ to form during vertebrate development. Congenital heart defects are the most common type of human birth defect, many originating as anomalies in early heart development. The zebrafish model provides an accessible vertebrate system to study early heart morphogenesis and to gain new insights into the mechanisms of congenital disease. Although composed of only two chambers compared with the four-chambered mammalian heart, the zebrafish heart integrates the core processes and cellular lineages central to cardiac development across vertebrates. The rapid, translucent development of zebrafish is amenable to in vivo imaging and genetic lineage tracing techniques, providing versatile tools to study heart field migration and myocardial progenitor addition and differentiation. Combining transgenic reporters with rapid genome engineering via CRISPR-Cas9 allows for functional testing of candidate genes associated with congenital heart defects and the discovery of molecular causes leading to observed phenotypes. Here, we summarize key insights gained through zebrafish studies into the early patterning of uncommitted lateral plate mesoderm into cardiac progenitors and their regulation. We review the central genetic mechanisms, available tools, and approaches for modeling congenital heart anomalies in the zebrafish as a representative vertebrate model.
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Affiliation(s)
| | | | | | - Christian Mosimann
- Department of Pediatrics, Section of Developmental Biology, University of Colorado School of Medicine and Children’s Hospital Colorado, Anschutz Medical Campus, Aurora, CO 80045, USA; (C.L.K.); (F.W.R.); (H.R.M.)
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16
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Blok M, Boukens BJ. Mechanisms of Arrhythmias in the Brugada Syndrome. Int J Mol Sci 2020; 21:ijms21197051. [PMID: 32992720 PMCID: PMC7582368 DOI: 10.3390/ijms21197051] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/15/2020] [Accepted: 09/21/2020] [Indexed: 12/13/2022] Open
Abstract
Arrhythmias in Brugada syndrome patients originate in the right ventricular outflow tract (RVOT). Over the past few decades, the characterization of the unique anatomy and electrophysiology of the RVOT has revealed the arrhythmogenic nature of this region. However, the mechanisms that drive arrhythmias in Brugada syndrome patients remain debated as well as the exact site of their occurrence in the RVOT. Identifying the site of origin and mechanism of Brugada syndrome would greatly benefit the development of mechanism-driven treatment strategies.
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Affiliation(s)
- Michiel Blok
- Department of Medical Biology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Experimental Cardiology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
| | - Bastiaan J. Boukens
- Department of Medical Biology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Department of Experimental Cardiology, Amsterdam University Medical Center, University of Amsterdam, 1105 AZ Amsterdam, The Netherlands
- Correspondence: ; Tel.: +31-(0)20-566-4659
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17
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Stadiotti I, Piacentini L, Vavassori C, Chiesa M, Scopece A, Guarino A, Micheli B, Polvani G, Colombo GI, Pompilio G, Sommariva E. Human Cardiac Mesenchymal Stromal Cells From Right and Left Ventricles Display Differences in Number, Function, and Transcriptomic Profile. Front Physiol 2020; 11:604. [PMID: 32670081 PMCID: PMC7327120 DOI: 10.3389/fphys.2020.00604] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 05/14/2020] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Left ventricle (LV) and right ventricle (RV) are characterized by well-known physiological differences, mainly related to their different embryological origin, hemodynamic environment, function, structure, and cellular composition. Nevertheless, scarce information is available about cellular peculiarities between left and right ventricular chambers in physiological and pathological contexts. Cardiac mesenchymal stromal cells (C-MSC) are key cells affecting many functions of the heart. Differential features that distinguish LV from RV C-MSC are still underappreciated. AIM To analyze the physiological differential amount, function, and transcriptome of human C-MSC in LV versus (vs.) RV. METHODS Human cardiac specimens of LV and RV from healthy donors were used for tissue analysis of C-MSC number, and for C-MSC isolation. Paired LV and RV C-MSC were compared as for surface marker expression, cell proliferation/death ratio, migration, differentiation capabilities, and transcriptome profile. RESULTS Histological analysis showed a greater percentage of C-MSC in RV vs. LV tissue. Moreover, a higher C-MSC amount was obtained from RV than from LV after isolation procedures. LV and RV C-MSC are characterized by a similar proportion of surface markers. Functional studies revealed comparable cell growth curves in cells from both ventricles. Conversely, LV C-MSC displayed a higher apoptosis rate and RV C-MSC were characterized by a higher migration speed and collagen deposition. Consistently, transcriptome analysis showed that genes related to apoptosis regulation or extracellular matrix organization and integrins were over-expressed in LV and RV, respectively. Besides, we revealed additional pathways specifically associated with LV or RV C-MSC, including energy metabolism, inflammatory response, cardiac conduction, and pluripotency. CONCLUSION Taken together, these results contribute to the functional characterization of RV and LV C-MSC in physiological conditions. This information suggests a possible differential role of the stromal compartment in chamber-specific pathologic scenarios.
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Affiliation(s)
- Ilaria Stadiotti
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Luca Piacentini
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Chiara Vavassori
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Mattia Chiesa
- Unit of Immunology and Functional Genomics, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Alessandro Scopece
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Anna Guarino
- Cardiovascular Tissue Bank, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Barbara Micheli
- Cardiovascular Tissue Bank, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Gianluca Polvani
- Cardiovascular Tissue Bank, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | | | - Giulio Pompilio
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, Milan, Italy
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Elena Sommariva
- Unit of Vascular Biology and Regenerative Medicine, Centro Cardiologico Monzino IRCCS, Milan, Italy
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18
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Garcia AM, Beatty JT, Nakano SJ. Heart failure in single right ventricle congenital heart disease: physiological and molecular considerations. Am J Physiol Heart Circ Physiol 2020; 318:H947-H965. [PMID: 32108525 PMCID: PMC7191494 DOI: 10.1152/ajpheart.00518.2019] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 02/13/2020] [Accepted: 02/19/2020] [Indexed: 12/27/2022]
Abstract
Because of remarkable surgical and medical advances over the past several decades, there are growing numbers of infants and children living with single ventricle congenital heart disease (SV), where there is only one functional cardiac pumping chamber. Nevertheless, cardiac dysfunction (and ultimately heart failure) is a common complication in the SV population, and pharmacological heart failure therapies have largely been ineffective in mitigating the need for heart transplantation. Given that there are several inherent risk factors for ventricular dysfunction in the setting of SV in addition to probable differences in molecular adaptations to heart failure between children and adults, it is perhaps not surprising that extrapolated adult heart failure medications have had limited benefit in children with SV heart failure. Further investigations into the molecular mechanisms involved in pediatric SV heart failure may assist with risk stratification as well as development of targeted, efficacious therapies specific to this patient population. In this review, we present a brief overview of SV anatomy and physiology, with a focus on patients with a single morphological right ventricle requiring staged surgical palliation. Additionally, we discuss outcomes in the current era, risk factors associated with the progression to heart failure, present state of knowledge regarding molecular alterations in end-stage SV heart failure, and current therapeutic interventions. Potential avenues for improving SV outcomes, including identification of biomarkers of heart failure progression, implications of personalized medicine and stem cell-derived therapies, and applications of novel models of SV disease, are proposed as future directions.
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Affiliation(s)
- Anastacia M Garcia
- Division of Cardiology, Department of Pediatrics, University of Colorado Denver, Aurora, Colorado
| | - Jonathan-Thomas Beatty
- Division of Cardiology, Department of Medicine, University of Colorado Denver, Aurora, Colorado
| | - Stephanie J Nakano
- Division of Cardiology, Department of Pediatrics, University of Colorado Denver, Aurora, Colorado
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19
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20
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Conway SJ, McConnell R, Simmons O, Snider PL. Armadillo-like helical domain containing-4 is dynamically expressed in both the first and second heart fields. Gene Expr Patterns 2019; 34:119077. [PMID: 31655130 DOI: 10.1016/j.gep.2019.119077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 10/18/2019] [Accepted: 10/19/2019] [Indexed: 12/19/2022]
Abstract
Armadillo repeat and Armadillo-like helical domain containing proteins form a large family with diverse and fundamental functions in many eukaryotes. Herein we investigated the spatiotemporal expression pattern of Armadillo-like helical domain containing 4 (or Armh4) as an uncharacterized protein coding mouse gene, within the mouse embryo during the initial stages of heart morphogenesis. We found Armh4 is initially expressed in both first heart field as well as the second heart field progenitors and subsequently within predominantly their cardiomyocyte derivatives. Armh4 expression is initially cardiac-restricted in the developing embryo and is expressed in second heart field subpharyngeal mesoderm prior to cardiomyocyte differentiation, but Armh4 diminishes as the embryonic heart matures into the fetal heart. Armh4 is subsequently expressed in craniofacial structures and neural crest-derived dorsal root and trigeminal ganglia. Whereas lithium chloride-induced stimulation of Wnt/β-catenin signaling elevated Armh4 expression in both second heart field subpharyngeal mesodermal progenitors and outflow tract, right ventricle and atrial cardiomyocytes, neither a systemic loss of Islet-1 nor an absence of cardiac neural crest cells had any effect upon Armh4 expression. These results confirm that Wnt/β-catenin-responsive Armh4 is a useful specific biomarker of the FHF and SHF cardiomyocyte derivatives only.
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Affiliation(s)
- Simon J Conway
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
| | - Reagan McConnell
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA; School of Biomedical Sciences, University of Ulster, Coleraine, BT52 1SA, Northern Ireland, UK
| | - Olga Simmons
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA
| | - Paige L Snider
- HB Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202, USA
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21
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Li G, Tian L, Goodyer W, Kort EJ, Buikema JW, Xu A, Wu JC, Jovinge S, Wu SM. Single cell expression analysis reveals anatomical and cell cycle-dependent transcriptional shifts during heart development. Development 2019; 146:dev.173476. [PMID: 31142541 DOI: 10.1242/dev.173476] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Accepted: 05/15/2019] [Indexed: 01/06/2023]
Abstract
The heart is a complex organ composed of multiple cell and tissue types. Cardiac cells from different regions of the growing embryonic heart exhibit distinct patterns of gene expression, which are thought to contribute to heart development and morphogenesis. Single cell RNA sequencing allows genome-wide analysis of gene expression at the single cell level. Here, we have analyzed cardiac cells derived from early stage developing hearts by single cell RNA-seq and identified cell cycle gene expression as a major determinant of transcriptional variation. Within cell cycle stage-matched CMs from a given heart chamber, we found that CMs in the G2/M phase downregulated sarcomeric and cytoskeletal markers. We also identified cell location-specific signaling molecules that may influence the proliferation of other nearby cell types. Our data highlight how variations in cell cycle activity selectively promote cardiac chamber growth during development, reveal profound chamber-specific cell cycle-linked transcriptional shifts, and open the way to deeper understanding of pathogenesis of congenital heart disease.
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Affiliation(s)
- Guang Li
- Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA .,Department of Developmental Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15201, USA
| | - Lei Tian
- Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - William Goodyer
- Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Eric J Kort
- DeVos Cardiovascular Research Program of Spectrum Health and Van Andel Research Institute, 100 Michigan Street NE, Grand Rapids, MI 49503, USA.,Michigan State University, College of Human Medicine, 15 Michigan Street NE, Grand Rapids, MI 49503, USA
| | - Jan W Buikema
- Department of Cardiology, Utrecht Regenerative Medicine Center, University Medical Center Utrecht, Utrecht University, 3508 GA Utrecht, The Netherlands
| | - Adele Xu
- Department of Genetics, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Joseph C Wu
- Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA.,Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.,Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.,Deparment of Radiology, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Stefan Jovinge
- Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA .,DeVos Cardiovascular Research Program of Spectrum Health and Van Andel Research Institute, 100 Michigan Street NE, Grand Rapids, MI 49503, USA.,Michigan State University, College of Human Medicine, 15 Michigan Street NE, Grand Rapids, MI 49503, USA
| | - Sean M Wu
- Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA .,Division of Cardiovascular Medicine, Department of Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA.,Institute for Stem Cell Biology and Regenerative Medicine, Stanford University School of Medicine, Stanford, CA 94305, USA
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22
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Rajderkar S, Mann JM, Panaretos C, Yumoto K, Li HD, Mishina Y, Ralston B, Kaartinen V. Trim33 is required for appropriate development of pre-cardiogenic mesoderm. Dev Biol 2019; 450:101-114. [PMID: 30940539 DOI: 10.1016/j.ydbio.2019.03.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/27/2019] [Accepted: 03/27/2019] [Indexed: 11/25/2022]
Abstract
Congenital cardiac malformations are among the most common birth defects in humans. Here we show that Trim33, a member of the Tif1 subfamily of tripartite domain containing transcriptional cofactors, is required for appropriate differentiation of the pre-cardiogenic mesoderm during a narrow time window in late gastrulation. While mesoderm-specific Trim33 mutants did not display noticeable phenotypes, epiblast-specific Trim33 mutant embryos developed ventricular septal defects, showed sparse trabeculation and abnormally thin compact myocardium, and died as a result of cardiac failure during late gestation. Differentiating embryoid bodies deficient in Trim33 showed an enrichment of gene sets associated with cardiac differentiation and contractility, while the total number of cardiac precursor cells was reduced. Concordantly, cardiac progenitor cell proliferation was reduced in Trim33-deficient embryos. ChIP-Seq performed using antibodies against Trim33 in differentiating embryoid bodies revealed more than 4000 peaks, which were significantly enriched close to genes implicated in stem cell maintenance and mesoderm development. Nearly half of the Trim33 peaks overlapped with binding sites of the Ctcf insulator protein. Our results suggest that Trim33 is required for appropriate differentiation of precardiogenic mesoderm during late gastrulation and that it will likely mediate some of its functions via multi-protein complexes, many of which include the chromatin architectural and insulator protein Ctcf.
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Affiliation(s)
- Sudha Rajderkar
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Jeffrey M Mann
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Christopher Panaretos
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Kenji Yumoto
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Hong-Dong Li
- Center for Bioinformatics, School of Information Science and Engineering, Central South University, Changsha, Hunan, 410083, PR China
| | - Yuji Mishina
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Benjamin Ralston
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Vesa Kaartinen
- Department of Biologic and Materials Sciences, University of Michigan, Ann Arbor, MI, 48109, USA.
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Guo Y, Dorn T, Kühl SJ, Linnemann A, Rothe M, Pfister AS, Vainio S, Laugwitz KL, Moretti A, Kühl M. The Wnt inhibitor Dkk1 is required for maintaining the normal cardiac differentiation program in Xenopus laevis. Dev Biol 2019; 449:1-13. [PMID: 30797757 PMCID: PMC6496975 DOI: 10.1016/j.ydbio.2019.02.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 01/15/2019] [Accepted: 02/16/2019] [Indexed: 12/15/2022]
Abstract
Wnt proteins can activate different intracellular signaling pathways. These pathways need to be tightly regulated for proper cardiogenesis. The canonical Wnt/β-catenin inhibitor Dkk1 has been shown to be sufficient to trigger cardiogenesis in gain-of-function experiments performed in multiple model systems. Loss-of-function studies however did not reveal any fundamental function for Dkk1 during cardiogenesis. Using Xenopus laevis as a model we here show for the first time that Dkk1 is required for proper differentiation of cardiomyocytes, whereas specification of cardiomyocytes remains unaffected in absence of Dkk1. This effect is at least in part mediated through regulation of non-canonical Wnt signaling via Wnt11. In line with these observations we also found that Isl1, a critical regulator for specification of the common cardiac progenitor cell (CPC) population, acts upstream of Dkk1.
Dkk1 is required for cardiac development in Xenopus laevis. The Wnt inhibitor Dkk1 acts downstream of Isl1 during cardiac development in vivo. Loss of Dkk1 has no impact on cardiac specification in Xenopus. Normal cardiac differentiation is impaired upon Dkk1 inhibition in Xenopus. Dkk1 regulates canonical Wnt/β-catenin signaling during Xenopus cardiogenesis.
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Affiliation(s)
- Yanchun Guo
- Institute for Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany; International Graduate School in Molecular Medicine Ulm, Ulm University, 89081 Ulm, Germany
| | - Tatjana Dorn
- Klinik und Poliklinik für Innere Medizin I, Klinikum Rechts der Isar der Technischen Universität München, Ismaninger Strasse 22, 81675 Munich, Germany
| | - Susanne J Kühl
- Institute for Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Alexander Linnemann
- Institute for Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Melanie Rothe
- Institute for Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany; International Graduate School in Molecular Medicine Ulm, Ulm University, 89081 Ulm, Germany
| | - Astrid S Pfister
- Institute for Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Seppo Vainio
- Faculty of Biochemistry and Molecular Medicine, Biocenter Oulu, InfoTech Oulu, Oulu University and Biobank Borealis of Northern Finland, Oulu University Hospital, Aapistie 5, FIN-90014, University of Oulu, Finland
| | - Karl-Ludwig Laugwitz
- Klinik und Poliklinik für Innere Medizin I, Klinikum Rechts der Isar der Technischen Universität München, Ismaninger Strasse 22, 81675 Munich, Germany; DZHK (German Centre for Cardiovascular Research) - Partner Site Munich Heart Alliance, Munich, Germany
| | - Alessandra Moretti
- Klinik und Poliklinik für Innere Medizin I, Klinikum Rechts der Isar der Technischen Universität München, Ismaninger Strasse 22, 81675 Munich, Germany; DZHK (German Centre for Cardiovascular Research) - Partner Site Munich Heart Alliance, Munich, Germany.
| | - Michael Kühl
- Institute for Biochemistry and Molecular Biology, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
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Xia M, Luo W, Jin H, Yang Z. HAND2-mediated epithelial maintenance and integrity in cardiac outflow tract morphogenesis. Development 2019; 146:dev.177477. [PMID: 31201155 DOI: 10.1242/dev.177477] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/03/2019] [Indexed: 01/06/2023]
Abstract
During embryogenesis, epithelial organization is the prerequisite for organogenesis, in particular, for establishing the tubular structure. Recent studies provided hints about epithelial formation in early heart development, which has not been systemically explored. Here, we revealed a gradient of HAND2 protein in the cardiac progenitors in the anterior dorsal pericardial wall (aDPW) and adjacent transition zone (TZ) in the outflow tract (OFT). Deletion of Hand2 caused cell arrest and accumulation in the TZ leading to defective morphogenesis. While apicobasal cell polarity was unaffected, the key epithelial elements of adherens junction and cell-matrix adhesion were disrupted in the TZ of Hand2 mutant mice, indicating poorly formed epithelium. RNA-seq analysis revealed altered regulation of the contractile fiber and actin cytoskeleton, which affected cardiomyocyte differentiation. Furthermore, we have identified Stars as being transcriptionally controlled by HAND2. STARS facilitates actin polymerization that is essential for anchoring the adhesive molecules to create cell adhesion. Thus, we have uncovered a new function of HAND2 in mediating epithelial maintenance and integrity in OFT morphogenesis. Meanwhile, this study provides insights to understanding cardiac progenitor contribution to OFT development.
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Affiliation(s)
- Meng Xia
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, Nanjing 210061, China
| | - Wen Luo
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, Nanjing 210061, China
| | - Hengwei Jin
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, Nanjing 210061, China
| | - Zhongzhou Yang
- State Key Laboratory of Pharmaceutical Biotechnology, Department of Cardiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing University, Nanjing 210061, China
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25
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Peter IS. Methods for the experimental and computational analysis of gene regulatory networks in sea urchins. Methods Cell Biol 2018; 151:89-113. [PMID: 30948033 DOI: 10.1016/bs.mcb.2018.10.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The discovery of gene regulatory networks (GRNs) has opened a gate to access the genomic mechanisms controlling development. GRNs are systems of transcriptional regulatory circuits that control the differential specification of cell fates during development by regulating gene expression. The experimental analysis of GRNs involves a collection of methods, each revealing aspects of the overall control process. This review provides an overview of experimental and computational methods that have been successfully applied for solving developmental GRNs in the sea urchin embryo. The key in this approach is to obtain experimental evidence for functional interactions between transcription factors and regulatory DNA. In the second part of this review, a more generally applicable strategy is discussed that shows a path from experimental evidence to annotation of regulatory linkages to the generation of GRN models.
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Affiliation(s)
- Isabelle S Peter
- Division of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA, United States.
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Giannakou A, Sicko RJ, Kay DM, Zhang W, Romitti PA, Caggana M, Shaw GM, Jelliffe-Pawlowski LL, Mills JL. Copy number variants in hypoplastic right heart syndrome. Am J Med Genet A 2018; 176:2760-2767. [DOI: 10.1002/ajmg.a.40527] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Revised: 06/23/2018] [Accepted: 08/04/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Andreas Giannakou
- Division of Intramural Population Health Research, Department of Health and Human Services; Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Bethesda Maryland
| | - Robert J. Sicko
- Division of Genetics, Wadsworth Center, New York State Department of Health; Albany New York
| | - Denise M. Kay
- Division of Genetics, Wadsworth Center, New York State Department of Health; Albany New York
| | - Wei Zhang
- Division of Intramural Population Health Research, Department of Health and Human Services; Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Bethesda Maryland
| | - Paul A. Romitti
- Department of Epidemiology, College of Public Health; The University of Iowa; Iowa City Iowa
| | - Michele Caggana
- Division of Genetics, Wadsworth Center, New York State Department of Health; Albany New York
| | - Gary M. Shaw
- Department of Pediatrics; Stanford University School of Medicine; Stanford California
| | | | - James L. Mills
- Division of Intramural Population Health Research, Department of Health and Human Services; Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health; Bethesda Maryland
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Abstract
There are more than 1 million adults with congenital heart disease (ACHD) in the United States. Heart failure (HF) is the most common late cardiovascular complication. These patients are challenging to manage given their diverse presentation, anatomy, and complex hemodynamics. Examination of underlying anatomy is crucial because many require late transcatheter and surgical interventions after developing HF. Management of arrhythmia is equally important because this can modify HF symptoms. A multidisciplinary team with expertise in the care of ACHD-HF is critical.
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Affiliation(s)
- Aarthi Sabanayagam
- Division of Cardiology, The Ohio State University, Nationwide Children's Hospital, Davis Heart and Lung Research Institute, 473 West 12th Avenue Suite 200, Columbus, OH 43210, USA.
| | - Omer Cavus
- Department of Physiology and Cell Biology, Davis Heart and Lung Research Institute, The Ohio State University, 473 West 12th Avenue Suite 200, Columbus, OH 43210, USA
| | - Jordan Williams
- Department of Physiology and Cell Biology, Davis Heart and Lung Research Institute, The Ohio State University, 473 West 12th Avenue Suite 200, Columbus, OH 43210, USA
| | - Elisa Bradley
- Department of Physiology and Cell Biology, The Ohio State University, Nationwide Children's Hospital, Davis Heart and Lung Research Institute, 473 West 12th Avenue Suite 200, Columbus, OH 43210, USA
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Hu J, Shi Y, Xia M, Liu Z, Zhang R, Luo H, Zhang T, Yang Z, Yuan B. WDR1-regulated actin dynamics is required for outflow tract and right ventricle development. Dev Biol 2018; 438:124-137. [PMID: 29654745 DOI: 10.1016/j.ydbio.2018.04.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 04/05/2018] [Accepted: 04/08/2018] [Indexed: 10/17/2022]
Abstract
Outflow tract (OFT) anomalies account for about 30% of human congenital heart defects detected at birth. The second heart field (SHF) progenitors contribute to OFT and right ventricle (RV) development, but the process largely remains unknown. WDR1 (WD-repeat domain 1) is a major co-factor of actin depolymerizing factor (ADF)/cofilin that actively disassembles ADF/cofilin-bound actin filaments. Its function in embryonic heart development has been unknown. Using Wdr1 floxed mice and Nkx2.5-Cre, we deleted Wdr1 in embryonic heart (Wdr1F/F;Nkx2.5-Cre) and found that these mice exhibited embryonic lethality, and hypoplasia of OFT and RV. To investigate the role of WDR1 in OFT and RV development, we generated SHF progenitors-specific Wdr1 deletion mice (shfKO). shfKO mice began to die at embryonic day 11.5 (E11.5), and displayed decreased size of the proximal OFT and RV at E10.5. In shfKO embryos, neither the number of SHF cells deployment to OFT nor cell proliferation and the cell number were changed, whereas the cellular organization and myofibrillar assembly of cardiomyocytes were severely disrupted. In the proximal OFT and RV of both shfKO and Wdr1F/F;Nkx2.5-Cre embryos, cardiomyocytes were dissociated from the outer compact myocardial layer and loosely and disorderly arranged into multilayered myocardium. Our results demonstrate that WDR1 is indispensable for normal OFT and RV development, and suggest that WDR1-mediated actin dynamics functions in controlling the size of OFT and RV, which might through regulating the spatial arrangement of cardiomyocytes.
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Affiliation(s)
- Jisheng Hu
- Biomedical Research Institute, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan, Hubei Province 430065, China
| | - Yingchao Shi
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Meng Xia
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Zhongying Liu
- Biomedical Research Institute, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan, Hubei Province 430065, China
| | - Ruirui Zhang
- Biomedical Research Institute, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan, Hubei Province 430065, China
| | - Hongmei Luo
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Tongcun Zhang
- Biomedical Research Institute, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan, Hubei Province 430065, China
| | - Zhongzhou Yang
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China.
| | - Baiyin Yuan
- Biomedical Research Institute, College of Life Science and Health, Wuhan University of Science and Technology, Wuhan, Hubei Province 430065, China.
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Lorenzale M, López-Unzu MA, Rodríguez C, Fernández B, Durán AC, Sans-Coma V. The anatomical components of the cardiac outflow tract of chondrichthyans and actinopterygians. Biol Rev Camb Philos Soc 2018; 93:1604-1619. [DOI: 10.1111/brv.12411] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 02/20/2018] [Accepted: 02/27/2018] [Indexed: 01/24/2023]
Affiliation(s)
- Miguel Lorenzale
- Departamento de Biología Animal, Facultad de Ciencias; Universidad de Málaga, Campus de Teatinos s/n; 29071 Málaga Spain
| | - Miguel A. López-Unzu
- Departamento de Biología Animal, Facultad de Ciencias; Universidad de Málaga, Campus de Teatinos s/n; 29071 Málaga Spain
- Instituto de Investigación Biomédica de Málaga (IBIMA); Universidad de Málaga; 29071 Málaga Spain
| | - Cristina Rodríguez
- Departamento de Biología Animal, Facultad de Ciencias; Universidad de Málaga, Campus de Teatinos s/n; 29071 Málaga Spain
- Instituto de Investigación Biomédica de Málaga (IBIMA); Universidad de Málaga; 29071 Málaga Spain
| | - Borja Fernández
- Departamento de Biología Animal, Facultad de Ciencias; Universidad de Málaga, Campus de Teatinos s/n; 29071 Málaga Spain
- Instituto de Investigación Biomédica de Málaga (IBIMA); Universidad de Málaga; 29071 Málaga Spain
| | - Ana C. Durán
- Departamento de Biología Animal, Facultad de Ciencias; Universidad de Málaga, Campus de Teatinos s/n; 29071 Málaga Spain
- Instituto de Investigación Biomédica de Málaga (IBIMA); Universidad de Málaga; 29071 Málaga Spain
| | - Valentín Sans-Coma
- Departamento de Biología Animal, Facultad de Ciencias; Universidad de Málaga, Campus de Teatinos s/n; 29071 Málaga Spain
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Abstract
Background Ebstein anomaly (EA) is a rare congenital defect characterized by apical displacement of the septal tricuspid leaflets and atrialization of the right ventricle. The etiology of EA is unclear; however, recurrence in families and the association of EA with genetic syndromes and copy number variants (CNVs) suggest a genetic component. Objective We performed a population-based study to search for recurrent and novel CNVs in a previously unreported set of EA cases. Methods We genotyped 60 EA cases identified from all live births (2,891,076) from selected California counties (1991–2010) using the Illumina HumanOmni2.5–8 array. We identified 38 candidate CNVs in 28 (46%) cases and prioritized and validated 11 CNVs based on the genes included. Results Five CNVs (41%) overlapped or were close to genes involved in early myocardial development, including NODAL, PDLIM5, SIX1, ASF1A and FGF12. We also replicated a previous association of EA with CNVs at 1p34.1 and AKAP12. Finally, we identified four CNVs overlapping or in close proximity to the transcription factors HES3, TRIM71, CUX1 and EIF4EBP2. Conclusions This study supports the relationship of genetic factors to EA and demonstrates that defects in cardiomyocytes and myocardium differentiation may play a role. Abnormal differentiation of cardiomyocytes and how genetic factors contribute should be examined for their association with EA.
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31
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Embryonic Ethanol Exposure Affects Early- and Late-Added Cardiac Precursors and Produces Long-Lasting Heart Chamber Defects in Zebrafish. TOXICS 2017; 5:toxics5040035. [PMID: 29194345 PMCID: PMC5750563 DOI: 10.3390/toxics5040035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Revised: 11/20/2017] [Accepted: 11/22/2017] [Indexed: 11/28/2022]
Abstract
Drinking mothers expose their fetuses to ethanol, which produces birth defects: craniofacial defects, cognitive impairment, sensorimotor disabilities and organ deformities, collectively termed as fetal alcohol spectrum disorder (FASD). Various congenital heart defects (CHDs) are present in FASD patients, but the mechanisms of alcohol-induced cardiogenesis defects are not completely understood. This study utilized zebrafish embryos and older larvae to understand FASD-associated CHDs. Ethanol-induced cardiac chamber defects initiated during embryonic cardiogenesis persisted in later zebrafish life. In addition, myocardial damage was recognizable in the ventricle of the larvae that were exposed to ethanol during embryogenesis. Our studies of the pathogenesis revealed that ethanol exposure delayed differentiation of first and second heart fields and reduced the number of early- and late-added cardiomyocytes in the heart. Ethanol exposure also reduced the number of endocardial cells. Together, this study showed that ethanol-induced heart defects were present in late-stage zebrafish larvae. Reduced numbers of cardiomyocytes partly accounts for the ethanol-induced zebrafish heart defects.
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32
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Dimopoulos A, Sicko RJ, Kay DM, Rigler SL, Druschel CM, Caggana M, Browne ML, Fan R, Romitti PA, Brody LC, Mills JL. Rare copy number variants in a population-based investigation of hypoplastic right heart syndrome. Birth Defects Res 2017; 109:8-15. [PMID: 28009100 PMCID: PMC5388571 DOI: 10.1002/bdra.23586] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 09/30/2016] [Indexed: 01/31/2023]
Abstract
BACKGROUND Hypoplastic right heart syndrome (HRHS) is a rare congenital defect characterized by underdevelopment of the right heart structures commonly accompanied by an atrial septal defect. Familial HRHS reports suggest genetic factor involvement. We examined the role of copy number variants (CNVs) in HRHS. METHODS We genotyped 32 HRHS cases identified from all New York State live births (1998-2005) using Illumina HumanOmni2.5 microarrays. CNVs were called with PennCNV and prioritized if they were ≥20 Kb, contained ≥10 SNPs and had minimal overlap with CNVs from in-house controls, the Database of Genomic Variants, HapMap3, and Childrens Hospital of Philadelphia database. RESULTS We identified 28 CNVs in 17 cases; several encompassed genes important for right heart development. One case had a 2p16-2p23 duplication spanning LBH, a limb and heart development transcription factor. Lbh mis-expression results in right ventricular hypoplasia and pulmonary valve defects. This duplication also encompassed SOS1, a factor associated with pulmonary valve stenosis in Noonan syndrome. Sos1-/- mice display thin and poorly trabeculated ventricles. In another case, we identified a 1.5 Mb deletion associated with Williams-Beuren syndrome, a disorder that includes valvular malformations. A third case had a 24 Kb deletion upstream of the TGFβ ligand ITGB8. Embryos genetically null for Itgb8, and its intracellular interactant Band 4.1B, display lethal cardiac phenotypes. CONCLUSION To our knowledge, this is the first study of CNVs in HRHS. We identified several rare CNVs that overlap genes related to right ventricular wall and valve development, suggesting that genetics plays a role in HRHS and providing clues for further investigation. Birth Defects Research 109:16-26, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Aggeliki Dimopoulos
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Robert J. Sicko
- Division of Genetics, Wadsworth Center, New York State Department of Health, Albany, NY
| | - Denise M. Kay
- Division of Genetics, Wadsworth Center, New York State Department of Health, Albany, NY
| | - Shannon L. Rigler
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Charlotte M. Druschel
- Congenital Malformations Registry, New York State Department of Health, Albany, NY
- Department of Epidemiology and Biostatistics, University at Albany School of Public Health, Rensselaer, New York, USA
| | - Michele Caggana
- Division of Genetics, Wadsworth Center, New York State Department of Health, Albany, NY
| | - Marilyn L. Browne
- Congenital Malformations Registry, New York State Department of Health, Albany, NY
- Department of Epidemiology and Biostatistics, University at Albany School of Public Health, Rensselaer, New York, USA
| | - Ruzong Fan
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
| | - Paul A. Romitti
- Department of Epidemiology, College of Public Health, The University of Iowa, Iowa City, IA
| | - Lawrence C. Brody
- Genome Technology Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - James L. Mills
- Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD
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Daughters RS, Keirstead SA, Slack JMW. Transformation of jaw muscle satellite cells to cardiomyocytes. Differentiation 2017; 93:58-65. [PMID: 27918914 PMCID: PMC5285469 DOI: 10.1016/j.diff.2016.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 11/16/2016] [Indexed: 02/06/2023]
Abstract
In the embryo a population of progenitor cells known as the second heart field forms not just parts of the heart but also the jaw muscles of the head. Here we show that it is possible to take skeletal muscle satellite cells from jaw muscles of the adult mouse and to direct their differentiation to become heart muscle cells (cardiomyocytes). This is done by exposing the cells to extracellular factors similar to those which heart progenitors would experience during normal embryonic development. By contrast, cardiac differentiation does not occur at all from satellite cells isolated from trunk and limb muscles, which originate from the somites of the embryo. The cardiomyocytes arising from jaw muscle satellite cells express a range of specific marker proteins, beat spontaneously, display long action potentials with appropriate responses to nifedipine, norepinephrine and carbachol, and show synchronized calcium transients. Our results show the existence of a persistent cardiac developmental competence in satellite cells of the adult jaw muscles, associated with their origin from the second heart field of the embryo, and suggest a possible method of obtaining cardiomyocytes from individual patients without the need for a heart biopsy.
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Affiliation(s)
- Randall S Daughters
- Stem Cell Institute, University of Minnesota, MTRF, 2001 6th Street SE, Minneapolis, MN 55455, USA
| | - Susan A Keirstead
- Stem Cell Institute, University of Minnesota, MTRF, 2001 6th Street SE, Minneapolis, MN 55455, USA
| | - Jonathan M W Slack
- Stem Cell Institute, University of Minnesota, MTRF, 2001 6th Street SE, Minneapolis, MN 55455, USA.
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Juszczuk-Kubiak E, Bujko K, Grześ M, Cymer M, Wicińska K, Szostak A, Pierzchała M. Study of bovine gene: the temporal-spatial expression patterns, polymorphism and association analysis with meat production traits. J Anim Sci 2016; 94:4536-4548. [PMID: 27898947 DOI: 10.2527/jas.2016-0741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The gene () encodes a transcription factor belonging to the MEF2 family that plays an important role in myogenesis by transcriptional regulation of genes involved in skeletal muscle growth and development. Despite the established importance of the factors in the muscular growth and development, the temporal-spatial expression and biological function of have not been reported in cattle. The aim of this study was to analyze the level of expression in the developing longissimus dorsi muscle (LM) of 4 cattle breeds (Polish Holstein-Friesian [HF], Limousine [LIM], Hereford [HER], Polish Red [PR]), differing in terms of meat production and utility type, at 6, 9, and 12 mo of age. The genetic polymorphism and expression patterns in 6 tissues (heart, spleen, liver, semitendinosus muscle [ST], gluteus medius muscle [GM], and LM) were also investigated. The results showed that mRNA was expressed at a high level in adult skeletal and cardiac muscles. Moreover, expression was markedly greater in the GM than in the LM ( 0.05) and ST ( 0.01). An age-dependent and breed-specific comparison of mRNA level in skeletal muscle of HF, LIM, HER, and PR bulls showed that age was significant differentiating factor of transcript/protein abundance in the LM of HER and LIM ( 0.001) compared to HF and PR, for which the differences in mRNA level were not significant ( > 0.05). Regarding the breed effect on the expression, significantly greater mRNA/protein level was noticed in the LM of 9 and 12 mo-old HER than of LIM ( 0.01), HF ( 0.001), and PR ( 0.001). Four novel SNP, namely, (promoter), (exon 7), (exon 8), and (3'UTR), were identified. We found that 3'UTR variant, situated within the seed region of the miR-5187-3p and miR-6931-5p binding sites, was associated with the level of mRNA/protein in LM of 12-mo-old HF bulls. In addition, we observed a significant association between some carcass quality traits, including meat and carcass fatness quality traits, and various 3'UTR genotypes in the investigated population of HF cattle. Our finding provides new evidence of the significant role in the postnatal muscle growth and development in cattle, and indicates that can be a promising molecular marker for carcass quality-related traits in adult cattle.
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Desjardins CA, Naya FJ. The Function of the MEF2 Family of Transcription Factors in Cardiac Development, Cardiogenomics, and Direct Reprogramming. J Cardiovasc Dev Dis 2016; 3. [PMID: 27630998 PMCID: PMC5019174 DOI: 10.3390/jcdd3030026] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Proper formation of the mammalian heart requires precise spatiotemporal transcriptional regulation of gene programs in cardiomyocytes. Sophisticated regulatory networks have evolved to not only integrate the activities of distinct transcription factors to control tissue-specific gene programs but also, in many instances, to incorporate multiple members within these transcription factor families to ensure accuracy and specificity in the system. Unsurprisingly, perturbations in this elaborate transcriptional circuitry can lead to severe cardiac abnormalities. Myocyte enhancer factor–2 (MEF2) transcription factor belongs to the evolutionarily conserved cardiac gene regulatory network. Given its central role in muscle gene regulation and its evolutionary conservation, MEF2 is considered one of only a few core cardiac transcription factors. In addition to its firmly established role as a differentiation factor, MEF2 regulates wide variety of, sometimes antagonistic, cellular processes such as cell survival and death. Vertebrate genomes encode multiple MEF2 family members thereby expanding the transcriptional potential of this core transcription factor in the heart. This review highlights the requirement of the MEF2 family and their orthologs in cardiac development in diverse animal model systems. Furthermore, we describe the recently characterized role of MEF2 in direct reprogramming and genome-wide cardiomyocyte gene regulation. A thorough understanding of the regulatory functions of the MEF2 family in cardiac development and cardiogenomics is required in order to develop effective therapeutic strategies to repair the diseased heart.
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Wang Y, Li Y, Guo C, Lu Q, Wang W, Jia Z, Chen P, Ma K, Reinberg D, Zhou C. ISL1 and JMJD3 synergistically control cardiac differentiation of embryonic stem cells. Nucleic Acids Res 2016; 44:6741-55. [PMID: 27105846 PMCID: PMC5001586 DOI: 10.1093/nar/gkw301] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 04/10/2016] [Indexed: 12/22/2022] Open
Abstract
ISL1 is expressed in cardiac progenitor cells and plays critical roles in cardiac lineage differentiation and heart development. Cardiac progenitor cells hold great potential for clinical and translational applications. However, the mechanisms underlying ISL1 function in cardiac progenitor cells have not been fully elucidated. Here we uncover a hierarchical role of ISL1 in cardiac progenitor cells, showing that ISL1 directly regulates hundreds of potential downstream target genes that are implicated in cardiac differentiation, through an epigenetic mechanism. Specifically, ISL1 promotes the demethylation of tri-methylation of histone H3K27 (H3K27me3) at the enhancers of key downstream target genes, including Myocd and Mef2c, which are core cardiac transcription factors. ISL1 physically interacts with JMJD3, a H3K27me3 demethylase, and conditional depletion of JMJD3 leads to impaired cardiac progenitor cell differentiation, phenocopying that of ISL1 depletion. Interestingly, ISL1 is not only responsible for the recruitment of JMJD3 to specific target loci during cardiac progenitor differentiation, but also modulates its demethylase activity. In conclusion, ISL1 and JMJD3 partner to alter the cardiac epigenome, instructing gene expression changes that drive cardiac differentiation.
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Affiliation(s)
- Yang Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
| | - Yuejiao Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
| | - Chen Guo
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
| | - Qin Lu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
| | - Weiping Wang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
| | - Zhuqing Jia
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
| | - Ping Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
| | - Kangtao Ma
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
| | - Danny Reinberg
- Howard Hughes Medical Institute, New York University Langone School of Medicine, Department of Biochemistry and Molecular Pharmacology, New York, NY 10016, USA
| | - Chunyan Zhou
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences; Beijing Key Laboratory of Protein Posttranslational Modifications and Cell Function; Key Laboratory of Molecular Cardiovascular Sciences, Ministry of Education of China; Peking University, Beijing 100191, PR China
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Månsson-Broberg A, Rodin S, Bulatovic I, Ibarra C, Löfling M, Genead R, Wärdell E, Felldin U, Granath C, Alici E, Le Blanc K, Smith CIE, Salašová A, Westgren M, Sundström E, Uhlén P, Arenas E, Sylvén C, Tryggvason K, Corbascio M, Simonson OE, Österholm C, Grinnemo KH. Wnt/β-Catenin Stimulation and Laminins Support Cardiovascular Cell Progenitor Expansion from Human Fetal Cardiac Mesenchymal Stromal Cells. Stem Cell Reports 2016; 6:607-617. [PMID: 27052314 PMCID: PMC4834052 DOI: 10.1016/j.stemcr.2016.02.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 02/19/2016] [Accepted: 02/22/2016] [Indexed: 11/29/2022] Open
Abstract
The intrinsic regenerative capacity of human fetal cardiac mesenchymal stromal cells (MSCs) has not been fully characterized. Here we demonstrate that we can expand cells with characteristics of cardiovascular progenitor cells from the MSC population of human fetal hearts. Cells cultured on cardiac muscle laminin (LN)-based substrata in combination with stimulation of the canonical Wnt/β-catenin pathway showed increased gene expression of ISL1, OCT4, KDR, and NKX2.5. The majority of cells stained positive for PDGFR-α, ISL1, and NKX2.5, and subpopulations also expressed the progenitor markers TBX18, KDR, c-KIT, and SSEA-1. Upon culture of the cardiac MSCs in differentiation media and on relevant LNs, portions of the cells differentiated into spontaneously beating cardiomyocytes, and endothelial and smooth muscle-like cells. Our protocol for large-scale culture of human fetal cardiac MSCs enables future exploration of the regenerative functions of these cells in the context of myocardial injury in vitro and in vivo.
Cells with progenitor properties can be expanded from human fetal cardiac MSCs Specific LNs support expansion and differentiation of cardiac MSCs The fetal cardiac MSCs express ISL1, PDGFR-α, and NKX2.5 Subpopulations express the progenitor markers KDR, SSEA-1, c-KIT, and TBX18
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Affiliation(s)
- Agneta Månsson-Broberg
- Division of Cardiology, Department of Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Sergey Rodin
- Division of Matrix Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Ivana Bulatovic
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Cristián Ibarra
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden; Cardiovascular & Metabolic Diseases, Innovative Medicines and Early Development, AstraZeneca R&D, 43150 Mölndal, Sweden
| | - Marie Löfling
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Rami Genead
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Eva Wärdell
- Division of Cardiology, Department of Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Ulrika Felldin
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Carl Granath
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Evren Alici
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, 17177 Stockholm, Sweden; Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL 33314, USA
| | - Katarina Le Blanc
- Division of Hematology, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, 17177 Stockholm, Sweden; Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital, 17177 Stockholm, Sweden
| | - C I Edvard Smith
- Department of Laboratory Medicine, Karolinska Institutet, Karolinska University Hospital, 17177 Stockholm, Sweden
| | - Alena Salašová
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Magnus Westgren
- CLINTEC, Division of Obstetrics and Gynecology, Karolinska Institutet, Karolinska University Hospital, 17177 Stockholm, Sweden
| | - Erik Sundström
- Division of Neurodegeneration, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Karolinska University Hospital, 17177 Stockholm, Sweden
| | - Per Uhlén
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Ernest Arenas
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Christer Sylvén
- Division of Cardiology, Department of Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Karl Tryggvason
- Division of Matrix Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden; Duke-NUS Graduate Medical School, Durham, NC 27710, USA
| | - Matthias Corbascio
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Oscar E Simonson
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden
| | - Cecilia Österholm
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden; Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL 33314, USA
| | - Karl-Henrik Grinnemo
- Division of Cardiothoracic Surgery and Anesthesiology, Department of Molecular Medicine and Surgery, Karolinska Institutet, 17177 Stockholm, Sweden; Cell Therapy Institute, Nova Southeastern University, Fort Lauderdale, FL 33314, USA.
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Kamps JAAM, Krenning G. Micromanaging cardiac regeneration: Targeted delivery of microRNAs for cardiac repair and regeneration. World J Cardiol 2016; 8:163-179. [PMID: 26981212 PMCID: PMC4766267 DOI: 10.4330/wjc.v8.i2.163] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 10/12/2015] [Accepted: 01/07/2016] [Indexed: 02/06/2023] Open
Abstract
The loss of cardiomyocytes during injury and disease can result in heart failure and sudden death, while the adult heart has a limited capacity for endogenous regeneration and repair. Current stem cell-based regenerative medicine approaches modestly improve cardiomyocyte survival, but offer neglectable cardiomyogenesis. This has prompted the need for methodological developments that crease de novo cardiomyocytes. Current insights in cardiac development on the processes and regulatory mechanisms in embryonic cardiomyocyte differentiation provide a basis to therapeutically induce these pathways to generate new cardiomyocytes. Here, we discuss the current knowledge on embryonic cardiomyocyte differentiation and the implementation of this knowledge in state-of-the-art protocols to the direct reprogramming of cardiac fibroblasts into de novo cardiomyocytes in vitro and in vivo with an emphasis on microRNA-mediated reprogramming. Additionally, we discuss current advances on state-of-the-art targeted drug delivery systems that can be employed to deliver these microRNAs to the damaged cardiac tissue. Together, the advances in our understanding of cardiac development, recent advances in microRNA-based therapeutics, and innovative drug delivery systems, highlight exciting opportunities for effective therapies for myocardial infarction and heart failure.
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Stout KK, Broberg CS, Book WM, Cecchin F, Chen JM, Dimopoulos K, Everitt MD, Gatzoulis M, Harris L, Hsu DT, Kuvin JT, Law Y, Martin CM, Murphy AM, Ross HJ, Singh G, Spray TL. Chronic Heart Failure in Congenital Heart Disease. Circulation 2016; 133:770-801. [DOI: 10.1161/cir.0000000000000352] [Citation(s) in RCA: 244] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Spatial regulation of cell cohesion by Wnt5a during second heart field progenitor deployment. Dev Biol 2016; 412:18-31. [PMID: 26916252 DOI: 10.1016/j.ydbio.2016.02.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Revised: 02/18/2016] [Accepted: 02/19/2016] [Indexed: 01/11/2023]
Abstract
Wnt5a, a non-canonical Wnt ligand critical for outflow tract (OFT) morphogenesis, is expressed specifically in second heart field (SHF) progenitors in the caudal splanchnic mesoderm (SpM) near the inflow tract (IFT). Using a conditional Wnt5a gain of function (GOF) allele and Islet1-Cre, we broadly over-expressed Wnt5a throughout the SHF lineage, including the entire SpM between the IFT and OFT. Wnt5a over-expression in Wnt5a null mutants can rescue the cell polarity and actin polymerization defects as well as severe SpM shortening, but fails to rescue OFT shortening. Moreover, Wnt5a over-expression in wild-type background is able to cause OFT shortening. We find that Wnt5a over-expression does not perturb SHF cell proliferation, apoptosis or differentiation, but affects the deployment of SHF cells by causing them to accumulate into a large bulge at the rostral SpM and fail to enter the OFT. Our immunostaining analyses suggest an inverse correlation between cell cohesion and Wnt5a level in the wild-type SpM. Ectopic Wnt5a expression in the rostral SpM of Wn5a-GOF mutants diminishes the upregulation of adherens junction; whereas loss of Wnt5a in Wnt5a null mutants causes premature increase in adherens junction level in the caudal SpM. Over-expression of mouse Wnt5a in Xenopus animal cap cells also reduces C-cadherin distribution on the plasma membrane without affecting its overall protein level, suggesting that Wnt5a may play an evolutionarily conserved role in controlling the cell surface level of cadherin to modulate cell cohesion during tissue morphogenesis. Collectively, our data indicate that restricted expression of Wnt5a in the caudal SpM is essential for normal OFT morphogenesis, and uncover a novel function of spatially regulated cell cohesion by Wnt5a in driving the deployment of SHF cells from the SpM into the OFT.
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41
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Taghli-Lamallem O, Plantié E, Jagla K. Drosophila in the Heart of Understanding Cardiac Diseases: Modeling Channelopathies and Cardiomyopathies in the Fruitfly. J Cardiovasc Dev Dis 2016; 3:jcdd3010007. [PMID: 29367558 PMCID: PMC5715700 DOI: 10.3390/jcdd3010007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Revised: 01/23/2016] [Accepted: 02/06/2016] [Indexed: 12/16/2022] Open
Abstract
Cardiovascular diseases and, among them, channelopathies and cardiomyopathies are a major cause of death worldwide. The molecular and genetic defects underlying these cardiac disorders are complex, leading to a large range of structural and functional heart phenotypes. Identification of molecular and functional mechanisms disrupted by mutations causing channelopathies and cardiomyopathies is essential to understanding the link between an altered gene and clinical phenotype. The development of animal models has been proven to be efficient for functional studies in channelopathies and cardiomyopathies. In particular, the Drosophila model has been largely applied for deciphering the molecular and cellular pathways affected in these inherited cardiac disorders and for identifying their genetic modifiers. Here we review the utility and the main contributions of the fruitfly models for the better understanding of channelopathies and cardiomyopathies. We also discuss the investigated pathological mechanisms and the discoveries of evolutionarily conserved pathways which reinforce the value of Drosophila in modeling human cardiac diseases.
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Affiliation(s)
- Ouarda Taghli-Lamallem
- GReD (Genetics, Reproduction and Development laboratory), INSERM U1103, CNRS UMR6293, University of Clermont-Ferrand, 28 place Henri-Dunant, 63000 Clermont-Ferrand, France.
| | - Emilie Plantié
- GReD (Genetics, Reproduction and Development laboratory), INSERM U1103, CNRS UMR6293, University of Clermont-Ferrand, 28 place Henri-Dunant, 63000 Clermont-Ferrand, France.
| | - Krzysztof Jagla
- GReD (Genetics, Reproduction and Development laboratory), INSERM U1103, CNRS UMR6293, University of Clermont-Ferrand, 28 place Henri-Dunant, 63000 Clermont-Ferrand, France.
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42
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Barnes RM, Harris IS, Jaehnig EJ, Sauls K, Sinha T, Rojas A, Schachterle W, McCulley DJ, Norris RA, Black BL. MEF2C regulates outflow tract alignment and transcriptional control of Tdgf1. Development 2016; 143:774-9. [PMID: 26811383 DOI: 10.1242/dev.126383] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 01/19/2016] [Indexed: 01/24/2023]
Abstract
Congenital heart defects are the most common birth defects in humans, and those that affect the proper alignment of the outflow tracts and septation of the ventricles are a highly significant cause of morbidity and mortality in infants. A late differentiating population of cardiac progenitors, referred to as the anterior second heart field (AHF), gives rise to the outflow tract and the majority of the right ventricle and provides an embryological context for understanding cardiac outflow tract alignment and membranous ventricular septal defects. However, the transcriptional pathways controlling AHF development and their roles in congenital heart defects remain incompletely elucidated. Here, we inactivated the gene encoding the transcription factor MEF2C in the AHF in mice. Loss of Mef2c function in the AHF results in a spectrum of outflow tract alignment defects ranging from overriding aorta to double-outlet right ventricle and dextro-transposition of the great arteries. We identify Tdgf1, which encodes a Nodal co-receptor (also known as Cripto), as a direct transcriptional target of MEF2C in the outflow tract via an AHF-restricted Tdgf1 enhancer. Importantly, both the MEF2C and TDGF1 genes are associated with congenital heart defects in humans. Thus, these studies establish a direct transcriptional pathway between the core cardiac transcription factor MEF2C and the human congenital heart disease gene TDGF1. Moreover, we found a range of outflow tract alignment defects resulting from a single genetic lesion, supporting the idea that AHF-derived outflow tract alignment defects may constitute an embryological spectrum rather than distinct anomalies.
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Affiliation(s)
- Ralston M Barnes
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143-3120, USA
| | - Ian S Harris
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143-3120, USA Division of Cardiology, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Eric J Jaehnig
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143-3120, USA
| | - Kimberly Sauls
- Cardiovascular Developmental Biology Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Tanvi Sinha
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143-3120, USA
| | - Anabel Rojas
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143-3120, USA
| | - William Schachterle
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143-3120, USA
| | - David J McCulley
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143-3120, USA
| | - Russell A Norris
- Cardiovascular Developmental Biology Center, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Brian L Black
- Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA 94143-3120, USA Department of Biochemistry and Biophysics, University of California, San Francisco, San Francisco, CA 94143, USA
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Dorn T, Goedel A, Lam JT, Haas J, Tian Q, Herrmann F, Bundschu K, Dobreva G, Schiemann M, Dirschinger R, Guo Y, Kühl SJ, Sinnecker D, Lipp P, Laugwitz KL, Kühl M, Moretti A. Direct nkx2-5 transcriptional repression of isl1 controls cardiomyocyte subtype identity. Stem Cells 2016; 33:1113-29. [PMID: 25524439 PMCID: PMC6750130 DOI: 10.1002/stem.1923] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Revised: 10/29/2014] [Accepted: 11/08/2014] [Indexed: 12/31/2022]
Abstract
During cardiogenesis, most myocytes arise from cardiac progenitors expressing the transcription factors Isl1 and Nkx2-5. Here, we show that a direct repression of Isl1 by Nkx2-5 is necessary for proper development of the ventricular myocardial lineage. Overexpression of Nkx2-5 in mouse embryonic stem cells (ESCs) delayed specification of cardiac progenitors and inhibited expression of Isl1 and its downstream targets in Isl1(+) precursors. Embryos deficient for Nkx2-5 in the Isl1(+) lineage failed to downregulate Isl1 protein in cardiomyocytes of the heart tube. We demonstrated that Nkx2-5 directly binds to an Isl1 enhancer and represses Isl1 transcriptional activity. Furthermore, we showed that overexpression of Isl1 does not prevent cardiac differentiation of ESCs and in Xenopus laevis embryos. Instead, it leads to enhanced specification of cardiac progenitors, earlier cardiac differentiation, and increased cardiomyocyte number. Functional and molecular characterization of Isl1-overexpressing cardiomyocytes revealed higher beating frequencies in both ESC-derived contracting areas and Xenopus Isl1-gain-of-function hearts, which associated with upregulation of nodal-specific genes and downregulation of transcripts of working myocardium. Immunocytochemistry of cardiomyocyte lineage-specific markers demonstrated a reduction of ventricular cells and an increase of cells expressing the pacemaker channel Hcn4. Finally, optical action potential imaging of single cardiomyocytes combined with pharmacological approaches proved that Isl1 overexpression in ESCs resulted in normally electrophysiologically functional cells, highly enriched in the nodal subtype at the expense of the ventricular lineage. Our findings provide an Isl1/Nkx2-5-mediated mechanism that coordinately regulates the specification of cardiac progenitors toward the different myocardial lineages and ensures proper acquisition of myocyte subtype identity.
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Affiliation(s)
- Tatjana Dorn
- I. Medizinische Klinik und Poliklinik, Klinikum rechts der Isar der Technischen Universität München, Munich, Germany
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Chamber identity programs drive early functional partitioning of the heart. Nat Commun 2015; 6:8146. [PMID: 26306682 PMCID: PMC4560818 DOI: 10.1038/ncomms9146] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 07/20/2015] [Indexed: 12/22/2022] Open
Abstract
The vertebrate heart muscle (myocardium) develops from the first heart field (FHF) and expands by adding second heart field (SHF) cells. While both lineages exist already in teleosts, the primordial contributions of FHF and SHF to heart structure and function remain incompletely understood. Here we delineate the functional contribution of the FHF and SHF to the zebrafish heart using the cis-regulatory elements of the draculin (drl) gene. The drl reporters initially delineate the lateral plate mesoderm, including heart progenitors. Subsequent myocardial drl reporter expression restricts to FHF descendants. We harnessed this unique feature to uncover that loss of tbx5a and pitx2 affect relative FHF versus SHF contributions to the heart. High-resolution physiology reveals distinctive electrical properties of each heart field territory that define a functional boundary within the single zebrafish ventricle. Our data establish that the transcriptional program driving cardiac septation regulates physiologic ventricle partitioning, which successively provides mechanical advantages of sequential contraction. The heart forms from combining the first with the second heart field, which in mammals creates left and right ventricle. Here transgenic zebrafish and physiology studies reveal that transcription factors controlling septation in mammals already in teleosts guide muscle coupling by controlling the relative contribution of the two fields to the heart.
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45
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Wu M, Li J. Numb family proteins: novel players in cardiac morphogenesis and cardiac progenitor cell differentiation. Biomol Concepts 2015; 6:137-48. [PMID: 25883210 PMCID: PMC4589147 DOI: 10.1515/bmc-2015-0003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 03/16/2015] [Indexed: 11/15/2022] Open
Abstract
Vertebrate heart formation is a spatiotemporally regulated morphogenic process that initiates with bilaterally symmetric cardiac primordial cells migrating toward the midline to form a linear heart tube. The heart tube then elongates and undergoes a series of looping morphogenesis, followed by expansions of regions that are destined to become primitive heart chambers. During the cardiac morphogenesis, cells derived from the first heart field contribute to the primary heart tube, and cells from the secondary heart field, cardiac neural crest, and pro-epicardial organ are added to the heart tube in a precise spatiotemporal manner. The coordinated addition of these cells and the accompanying endocardial cushion morphogenesis yield the atrial, ventricular, and valvular septa, resulting in the formation of a four-chambered heart. Perturbation of progenitor cells' deployment and differentiation leads to a spectrum of congenital heart diseases. Two of the genes that were recently discovered to be involved in cardiac morphogenesis are Numb and Numblike. Numb, an intracellular adaptor protein, distinguishes sibling cell fates by its asymmetric distribution between the two daughter cells and its ability to inhibit Notch signaling. Numb regulates cardiac progenitor cell differentiation in Drosophila and controls heart tube laterality in Zebrafish. In mice, Numb and Numblike, the Numb family proteins (NFPs), function redundantly and have been shown to be essential for epicardial development, cardiac progenitor cell differentiation, outflow tract alignment, atrioventricular septum morphogenesis, myocardial trabeculation, and compaction. In this review, we will summarize the functions of NFPs in cardiac development and discuss potential mechanisms of NFPs in the regulation of cardiac development.
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Affiliation(s)
- M Wu
- Cardiovascular Science Center, Albany Medical College, Albany NY 12208
| | - J Li
- Cardiovascular Science Center, Albany Medical College, Albany NY 12208
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Abstract
The developmental paths that lead to the formation of skeletal muscles in the head are distinct from those operating in the trunk. Craniofacial muscles are associated with head and neck structures. In the embryo, these structures derive from distinct mesoderm populations. Distinct genetic programs regulate different groups of muscles within the head to generate diverse muscle specifications. Developmental and lineage studies in vertebrates and invertebrates demonstrated an overlap in progenitor populations derived from the pharyngeal mesoderm that contribute to certain head muscles and the heart. These studies reveal that the genetic program controlling pharyngeal muscles overlaps with that of the heart. Indeed cardiac and craniofacial birth defects are often linked. Recent studies suggest that early chordates, the last common ancestor of tunicates and vertebrates, had an ancestral pharyngeal mesoderm lineage that later during evolution gave rise to both heart and craniofacial structures. This chapter summarizes studies related to the origins, signaling, genetics, and evolution of the head musculature, highlighting its heterogeneous characteristics in all these aspects.
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Affiliation(s)
- Eldad Tzahor
- Department of Biological Regulation, Weizmann Institute of Science, Rehovot, 76100, Israel,
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47
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Luo W, Zhao X, Jin H, Tao L, Zhu J, Wang H, Hemmings BA, Yang Z. Akt1 signaling coordinates BMP signaling and β-catenin activity to regulate second heart field progenitor development. Development 2015; 142:732-42. [DOI: 10.1242/dev.119016] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Second heart field (SHF) progenitors exhibit continued proliferation and delayed differentiation, which are modulated by FGF4/8/10, BMP and canonical Wnt/β-catenin signaling. PTEN-Akt signaling regulates the stem cell/progenitor cell homeostasis in several systems, such as hematopoietic stem cells, intestinal stem cells and neural progenitor cells. To address whether PTEN-Akt signaling is involved in regulating cardiac progenitors, we deleted Pten in SHF progenitors. Deletion of Pten caused SHF expansion and increased the size of the SHF derivatives, the right ventricle and the outflow tract. Cell proliferation of cardiac progenitors was enhanced, whereas cardiac differentiation was unaffected by Pten deletion. Removal of Akt1 rescued the phenotype and early lethality of Pten deletion mice, suggesting that Akt1 was the key downstream target that was negatively regulated by PTEN in cardiac progenitors. Furthermore, we found that inhibition of FOXO by Akt1 suppressed the expression of the gene encoding the BMP ligand (BMP7), leading to dampened BMP signaling in the hearts of Pten deletion mice. Cardiac activation of Akt also increased the Ser552 phosphorylation of β-catenin, thus enhancing its activity. Reducing β-catenin levels could partially rescue heart defects of Pten deletion mice. We conclude that Akt signaling regulates the cell proliferation of SHF progenitors through coordination of BMP signaling and β-catenin activity.
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Affiliation(s)
- Wen Luo
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Xia Zhao
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Hengwei Jin
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Lichan Tao
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Jingai Zhu
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Huijuan Wang
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
| | - Brian A. Hemmings
- Friedrich Miescher Institute for Biomedical Research, 4058 Basel, Switzerland
| | - Zhongzhou Yang
- MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Nanjing Biomedical Research Institute, Nanjing University, Nanjing 210061, China
- Collaborative Innovation Center for Genetics and Development, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai 200438, China
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48
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Uribe V, Badía-Careaga C, Casanova JC, Domínguez JN, de la Pompa JL, Sanz-Ezquerro JJ. Arid3b is essential for second heart field cell deployment and heart patterning. Development 2014; 141:4168-81. [PMID: 25336743 DOI: 10.1242/dev.109918] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Arid3b, a member of the conserved ARID family of transcription factors, is essential for mouse embryonic development but its precise roles are poorly understood. Here, we show that Arid3b is expressed in the myocardium of the tubular heart and in second heart field progenitors. Arid3b-deficient embryos show cardiac abnormalities, including a notable shortening of the poles, absence of myocardial differentiation and altered patterning of the atrioventricular canal, which also lacks epithelial-to-mesenchymal transition. Proliferation and death of progenitors as well as early patterning of the heart appear normal. However, DiI labelling of second heart field progenitors revealed a defect in the addition of cells to the heart. RNA microarray analysis uncovered a set of differentially expressed genes in Arid3b-deficient tissues, including Bhlhb2, a regulator of cardiomyocyte differentiation, and Lims2, a gene involved in cell migration. Arid3b is thus required for heart development by regulating the motility and differentiation of heart progenitors. These findings identify Arid3b as a candidate gene involved in the aetiology of human congenital malformations.
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Affiliation(s)
- Verónica Uribe
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, Madrid 28029, Spain
| | - Claudio Badía-Careaga
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, Madrid 28029, Spain
| | - Jesús C Casanova
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, Madrid 28029, Spain
| | - Jorge N Domínguez
- Departamento de Biología Experimental, Facultad de Ciencias Experimentales, Universidad de Jaén, CU Las Lagunillas, Jáen 23071, Spain
| | - José Luis de la Pompa
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, Madrid 28029, Spain
| | - Juan José Sanz-Ezquerro
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernández Almagro, 3, Madrid 28029, Spain Departamento de Biología Molecular y Celular, Centro Nacional de Biotecnología (CSIC), Darwin, 3, Madrid 28049, Spain
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49
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Sinha T, Li D, Théveniau-Ruissy M, Hutson MR, Kelly RG, Wang J. Loss of Wnt5a disrupts second heart field cell deployment and may contribute to OFT malformations in DiGeorge syndrome. Hum Mol Genet 2014; 24:1704-16. [PMID: 25410658 DOI: 10.1093/hmg/ddu584] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Outflow tract (OFT) malformation accounts for ∼30% of human congenital heart defects and manifests frequently in TBX1 haplo-insufficiency associated DiGeorge (22q11.2 deletion) syndrome. OFT myocardium originates from second heart field (SHF) progenitors in the pharyngeal and splanchnic mesoderm (SpM), but how these progenitors are deployed to the OFT is unclear. We find that SHF progenitors in the SpM gradually gain epithelial character and are deployed to the OFT as a cohesive sheet. Wnt5a, a non-canonical Wnt, is expressed specifically in the caudal SpM and may regulate oriented cell intercalation to incorporate SHF progenitors into an epithelial-like sheet, thereby generating the pushing force to deploy SHF cells rostrally into the OFT. Using enhancer trap and Cre transgenes, our lineage tracing experiments show that in Wnt5a null mice, SHF progenitors are trapped in the SpM and fail to be deployed to the OFT efficiently, resulting in a reduction in the inferior OFT myocardial wall and its derivative, subpulmonary myocardium. Concomitantly, the superior OFT and subaortic myocardium are expanded. Finally, in chick embryos, blocking the Wnt5a function in the caudal SpM perturbs polarized elongation of SHF progenitors, and compromises their deployment to the OFT. Collectively, our results highlight a critical role for Wnt5a in deploying SHF progenitors from the SpM to the OFT. Given that Wnt5a is a putative transcriptional target of Tbx1, and the similar reduction of subpulmonary myocardium in Tbx1 mutant mice, our results suggest that perturbing Wnt5a-mediated SHF deployment may be an important pathogenic mechanism contributing to OFT malformations in DiGeorge syndrome.
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Affiliation(s)
- Tanvi Sinha
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Alabama, USA
| | - Ding Li
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Alabama, USA
| | | | - Mary R Hutson
- Department of Pediatrics, Duke University School of Medicine, Durham, North Carolina
| | - Robert G Kelly
- Aix Marseille Université, CNRS, IBDM UMR 7288, Marseille 13288, France
| | - Jianbo Wang
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Alabama, USA,
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50
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Sharma A, Nguyen H, Geng C, Hinman MN, Luo G, Lou H. Calcium-mediated histone modifications regulate alternative splicing in cardiomyocytes. Proc Natl Acad Sci U S A 2014; 111:E4920-8. [PMID: 25368158 PMCID: PMC4246288 DOI: 10.1073/pnas.1408964111] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
In cardiomyocytes, calcium is known to control gene expression at the level of transcription, whereas its role in regulating alternative splicing has not been explored. Here we report that, in mouse primary or embryonic stem cell-derived cardiomyocytes, increased calcium levels induce robust and reversible skipping of several alternative exons from endogenously expressed genes. Interestingly, we demonstrate a calcium-mediated splicing regulatory mechanism that depends on changes of histone modifications. Specifically, the regulation occurs through changes in calcium-responsive kinase activities that lead to alterations in histone modifications and subsequent changes in the transcriptional elongation rate and exon skipping. We demonstrate that increased intracellular calcium levels lead to histone hyperacetylation along the body of the genes containing calcium-responsive alternative exons by disrupting the histone deacetylase-to-histone acetyltransferase balance in the nucleus. Consequently, the RNA polymerase II elongation rate increases significantly on those genes, resulting in skipping of the alternative exons. These studies reveal a mechanism by which calcium-level changes in cardiomyocytes impact on the output of gene expression through altering alternative pre-mRNA splicing patterns.
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Affiliation(s)
| | | | - Cuiyu Geng
- Department of Genetics and Genome Sciences
| | | | - Guangbin Luo
- Department of Genetics and Genome Sciences, Case Comprehensive Cancer Center, and
| | - Hua Lou
- Department of Genetics and Genome Sciences, Case Comprehensive Cancer Center, and Center for RNA Molecular Biology, School of Medicine, Case Western Reserve University, Cleveland, OH 44106
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