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Bugbee E, Wang AA, Gommerman JL. Under the influence: environmental factors as modulators of neuroinflammation through the IL-10/IL-10R axis. Front Immunol 2023; 14:1188750. [PMID: 37600781 PMCID: PMC10435745 DOI: 10.3389/fimmu.2023.1188750] [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: 03/17/2023] [Accepted: 07/12/2023] [Indexed: 08/22/2023] Open
Abstract
The IL-10/IL-10 receptor (IL-10R) axis plays an important role in attenuating neuroinflammation in animal models of Multiple Sclerosis (MS) and increased IL-10 has been associated with a positive response to MS disease modifying therapy. Because environmental factors play an important role in MS susceptibility and disease course, identification of environmental factors that impact the IL-10/IL-10R axis has therapeutic potential. In this review, we provide historical and updated perspectives of how IL-10R signaling impacts neuroinflammation, discuss environmental factors and intestinal microbes with known impacts on the IL-10/IL-10R axis, and provide a hypothetical model for how B cells, via their production of IL-10, may be important in conveying environmental "information" to the inflamed central nervous system.
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Han H, Zhu B, Xie J, Huang Y, Geng Y, Chen K, Wang W. Expression level and prognostic potential of beta-catenin-interacting protein in acute myeloid leukemia. Medicine (Baltimore) 2022; 101:e30022. [PMID: 35984200 PMCID: PMC9387945 DOI: 10.1097/md.0000000000030022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Inhibitor of beta-catenin and TCF (ICAT) is a key protein in the Wnt-β-catenin signaling pathway. However, its role in acute myeloid leukemia (AML) remains unknown. In this study, we evaluated its expression level as well as its prognostic value in AML patients. A total of 72 patients with AML and 30 control subjects were enrolled in this study during the period of January 2017 and December 2019 at Zhongshan Hospital of SunYat-sen University. ICAT and β-catenin expression levels in peripheral blood were determined via enzyme-linked immunosorbent assays. ICAT levels in AML patients were significantly lower and β-catenin levels were higher than those of the control group. After the first course of standard chemotherapy, the concentration of ICAT in the partial remission group (93.79 ng/mL) was significantly higher than that in the initial diagnosis group (49.38 ng/mL) and the no response group (39.94 ng/mL). AML subtypes had lower ICAT expression levels than controls, and ICAT levels were significantly correlated with body mass index, bone marrow/peripheral blood blast cell proportions, and white blood cell and red blood cell counts at initial diagnosis. Furthermore, low ICAT expression was found to be associated with poor disease-free survival and overall survival in AML. ICAT is closely associated with AML progression and can be used as an indicator to monitor AML treatment efficacy.
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Affiliation(s)
- Hui Han
- Department of Laboratory Medicine, Zhongshan Hospital of SunYat-sen University, Zhongshan, GuangdongChina
| | - Baofang Zhu
- Department of Laboratory Medicine, Zhongshan Hospital of SunYat-sen University, Zhongshan, GuangdongChina
| | - Jinye Xie
- Department of Laboratory Medicine, Zhongshan Hospital of SunYat-sen University, Zhongshan, GuangdongChina
| | - Yunxiu Huang
- Department of Laboratory Medicine, Zhongshan Hospital of SunYat-sen University, Zhongshan, GuangdongChina
| | - Yiyun Geng
- Department of Laboratory Medicine, Zhongshan Hospital of SunYat-sen University, Zhongshan, GuangdongChina
| | - Kang Chen
- Department of Laboratory Medicine, Zhongshan Hospital of SunYat-sen University, Zhongshan, GuangdongChina
| | - Weijia Wang
- Department of Laboratory Medicine, Zhongshan Hospital of SunYat-sen University, Zhongshan, GuangdongChina
- *Correspondence: Weijia Wang, Department of Laboratory Medicine Zhongshan Hospital of Sun Yat-sen University, 2 East of Sun Wen Road, Shi Qi District, Zhongshan 528403, Guangdong Province, China (e-mail: )
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Luo D, Luo M, Wang H, Liu X, Yang M, Tian F, Qin S, Liu J. Protective Effects of Lactobacillus rhamnosus Peptides Against DSS-Induced Inflammatory and Oxidative Damages in Human Colonic Epithelial Cells Through NF-κB/Nrf2/HO-1 Signaling Pathway. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10425-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wan F, Zhong R, Wang M, Zhou Y, Chen Y, Yi B, Hou F, Liu L, Zhao Y, Chen L, Zhang H. Caffeic Acid Supplement Alleviates Colonic Inflammation and Oxidative Stress Potentially Through Improved Gut Microbiota Community in Mice. Front Microbiol 2021; 12:784211. [PMID: 34867926 PMCID: PMC8636926 DOI: 10.3389/fmicb.2021.784211] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 10/20/2021] [Indexed: 12/26/2022] Open
Abstract
Caffeic acid (CA) is one of the major phenolic acids of coffee with multiple biological activities. Our previous study found that 500 mg/kg of chlorogenic acid (CGA) had the potential capacity of alleviating colonic inflammation. Moreover, CGA can be degraded into caffeic acid (CA) by the gut microbiota in the colon. Therefore, we hypothesize that CA can exert protective effects on colonic inflammation. To test the hypothesis, 251 mg/kg CA was supplemented to DSS-induced colitis mice. The results showed that CA treatment recovered DSS-induced disease activity index (DAI), colon length, and histopathology scores of colon tissue. Additionally, CA treatment significantly decreased pro-inflammatory cytokines and malondialdehyde (MDA) levels and increased the level of IL-10, total antioxidant capacity (T-AOC), superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT) in serum. qPCR results indicated that CA treatment dramatically downregulated mRNA expression of IL-1β, IL-6, and TNF-α as well as upregulated SOD1, GPX1, GPX2, CAT, and IL-10. In addition, CA supplementation significantly increased mRNA expression of Nrf-2, HO-1, and NQO1, which showed its antioxidant and anti-inflammatory capacities potentially by activating the Nrf-2/HO-1 pathway. Moreover, CA supplementation prevented gut barrier damage by enhancing Occludin gene expression. Furthermore, CA supplementation altered the gut microbiome composition by decreasing the relative abundance of Bacteroides and Turicibacter, and enhancing the relative abundance of Alistipes and Dubosiella. Meanwhile, CA supplementation increases the abundance of Dubosiella and Akkermansia. In conclusion, CA supplementation could effectively alleviate DSS-induced colitis by improving the defense against oxidative stress and inflammatory response.
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Affiliation(s)
- Fan Wan
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China.,State Key Laboratory of Grassland Agro-Ecosystem, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Ruqing Zhong
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Mengyu Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yexun Zhou
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yuxia Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Bao Yi
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Fujiang Hou
- State Key Laboratory of Grassland Agro-Ecosystem, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Lei Liu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yong Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Liang Chen
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongfu Zhang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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Chlorogenic acid supplementation alleviates dextran sulfate sodium (DSS)-induced colitis via inhibiting inflammatory responses and oxidative stress, improving gut barrier integrity and Nrf-2/HO-1 pathway. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104808] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
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Abstract
Interleukin (IL)-10 is an essential anti-inflammatory cytokine and functions as a negative regulator of immune responses to microbial antigens. IL-10 is particularly important in maintaining the intestinal microbe-immune homeostasis. Loss of IL-10 promotes the development of inflammatory bowel disease (IBD) as a consequence of an excessive immune response to the gut microbiota. IL-10 also functions more generally to prevent excessive inflammation during the course of infection. Although IL-10 can be produced by virtually all cells of the innate and adaptive immune system, T cells constitute a non-redundant source for IL-10 in many cases. The various roles of T cell-derived IL-10 will be discussed in this review. Given that IL-10 is at the center of maintaining the delicate balance between effective immunity and tissue protection, it is not surprising that IL-10 expression is highly dynamic and tightly regulated. We summarize the environmental signals and molecular pathways that regulate IL-10 expression. While numerous studies have provided us with a deep understanding of IL-10 biology, the majority of findings have been made in murine models, prompting us to highlight gaps in our knowledge about T cell-derived IL-10 in the human system.
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Serum Expression of β-Catenin Is a Potential Detection Marker in Patients with Colorectal Cancer. DISEASE MARKERS 2019; 2019:5070524. [PMID: 31781302 PMCID: PMC6855041 DOI: 10.1155/2019/5070524] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 08/20/2019] [Accepted: 09/05/2019] [Indexed: 02/07/2023]
Abstract
Object To investigate the correlation between the level of serum β-catenin and the disease progression of colorectal polyp (CRP) and colorectal cancer (CRC) and find its potential diagnostic value. Methods A total of 327 clinical serum samples and their electronic medical records were collected. Detecting by enzyme-linked immunosorbent assay (ELISA), the correlations of serum β-catenin with tumor marker carcinoembryonic antigen (CEA) and CRC clinicopathological parameters and the receiver operating characteristic (ROC) curve were analyzed. Results Serum β-catenin levels in the CRP and CRC patients were significantly higher than those in the healthy control (HC) group (P < 0.05 and P < 0.001). Compared with CRP, serum β-catenin level in CRC was also increased (P < 0.05). However, there was no significant difference in gender, age, location, tumor size, Dukes staging, or metastasis (P > 0.05) between serum β-catenin and clinical parameters of CRC. There was no correlation between serum β-catenin levels and CEA in CRC patients (P = 0.14). ROC curve analysis showed that serum β-catenin possessed the maximum diagnostic efficiency in CRP (AUC = 0.73, P < 0.05) with 86.41% sensitivity and 51.56% specificity. β-Catenin combined with CEA had the highest diagnostic efficiency (AUC = 0.88, P < 0.05) with 81.88% sensitivity and 73.44% specificity. With CRC patients from CRP patients, ROC analysis of the combining detection (AUC = 0.70, P < 0.05) had the 70% sensitivity and 84.5% specificity. Conclusion The serum β-catenin levels are gradually increased in CRP and CRC, while there is no correlation between its levels and CRC disease process. Single serum β-catenin or combined CEA would be one of the potential candidate biomarkers for colorectal disease diagnosis.
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Hurtubise R, Audiger C, Dominguez-Punaro MC, Chabot-Roy G, Chognard G, Raymond-Marchand L, Coderre L, Chemtob S, Michnick SW, Rioux JD, Lesage S. Induced and spontaneous colitis mouse models reveal complex interactions between IL-10 and IL-12/IL-23 pathways. Cytokine 2019; 121:154738. [DOI: 10.1016/j.cyto.2019.154738] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 05/13/2019] [Accepted: 05/28/2019] [Indexed: 02/08/2023]
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Yazdani R, Moazzami B, Madani SP, Behniafard N, Azizi G, Aflatoonian M, Abolhassani H, Aghamohammadi A. Candidiasis associated with very early onset inflammatory bowel disease: First IL10RB deficient case from the National Iranian Registry and review of the literature. Clin Immunol 2019; 205:35-42. [PMID: 31096038 DOI: 10.1016/j.clim.2019.05.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 03/02/2019] [Accepted: 05/11/2019] [Indexed: 02/07/2023]
Abstract
Defects in interleukin-10 (IL10) and interleukin-10 receptors (IL10R) are closely related to very early onset (infantile) inflammatory bowel disease (VEO-IBD). In the present study, we report a novel homozygous null mutation within interleukin-10 receptor B (IL10RB) gene in a child presenting with severe VEO-IBD. In accordance with previous reports, our patient manifested with chronic diarrhea, failure to thrive, intermittent fever and multiple anal ulcers associated with Candidiasis. Homozygous null mutation within IL10RB gene (c.92C > T, p.S31P) affecting the extracellular domain of protein was discovered in this patient. In conclusion, the diagnosis of IL-10R gene mutations should always be considered as a possible cause of refractory diarrhea and failure to thrive. Mutation analysis could help detect the genetic defects associated with these clinical manifestations and to determine the most appropriate treatment option for patients affected by this disease.
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Affiliation(s)
- Reza Yazdani
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran and the University of Medical Science, Tehran, Iran
| | - Bobak Moazzami
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran and the University of Medical Science, Tehran, Iran
| | - Seyedeh Panid Madani
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran and the University of Medical Science, Tehran, Iran
| | - Nasrin Behniafard
- Department of Allergy and Clinical Immunology, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Gholamreza Azizi
- Non-Communicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Majid Aflatoonian
- Pediatric Department, Growth Disorders of Children Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Hassan Abolhassani
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran and the University of Medical Science, Tehran, Iran; Division of Clinical Immunology, Department of Laboratory Medicine, Karolinska Institute at Karolinska University Hospital Huddinge, Stockholm, Sweden
| | - Asghar Aghamohammadi
- Research Center for Immunodeficiencies, Pediatrics Center of Excellence, Children's Medical Center, Tehran and the University of Medical Science, Tehran, Iran.
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Peng K, Qian X, Huang Z, Lu J, Wang Y, Zhou Y, Wang H, Wu B, Wang Y, Chen L, Zhai X, Huang Y. Umbilical Cord Blood Transplantation Corrects Very Early-Onset Inflammatory Bowel Disease in Chinese Patients With IL10RA-Associated Immune Deficiency. Inflamm Bowel Dis 2018; 24:1416-1427. [PMID: 29788474 DOI: 10.1093/ibd/izy028] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Indexed: 12/12/2022]
Abstract
BACKGROUND Hematopoietic stem cell transplantation is considered the only curative therapy for very early-onset inflammatory bowel disease with specific immune defects, such as interleukin-10 receptor deficiency. We performed reduced-intensity conditioning before umbilical cord blood transplantation in patients with interleukin-10 receptor-A deficiency. METHODS We enrolled 9 very early-onset inflammatory bowel disease patients with typical manifestations. We diagnosed the patients with interleukin-10 receptor-A deficiency by whole-exome sequencing. Umbilical cord blood transplantation was performed in all 9 patients. Eight patients received the reduced-intensity conditioning regimen, and 1 patient received the myeloablative conditioning regimen. RESULTS All 9 patients received transplantation between the ages of 6 months to 43 months (average, 16.8 months) with body weights ranging from 3 to 10.4 kg (average, 6.6 kg). The patients displayed complete chimerism at 2-8 weeks after transplantation; 6 patients achieved complete remission without evidence of graft-vs-host disease or infections; 1 patient died of chronic lung graft-vs-host disease at 6 months post-transplantation; and the other 2 patients died of sepsis post-transplantation because of unsuccessful engraftments. Severe malnutrition and growth retardation associated with interleukin-10 receptor-A deficiency were significantly improved post-transplantation. CONCLUSIONS We recommend umbilical cord blood transplantation as a potential treatment for very early-onset inflammatory bowel disease with a defined monogenic immunodeficiency, and we suggest that reduced-intensity conditioning chemotherapy is more suitable than myeloablative conditioning for patients with severe malnutrition and bowel disease. We have demonstrated success with reduced-intensity conditioning for interleukin-10 receptor-A deficiency in pediatric patients with severe clinical conditions. 10.1093/ibd/izy028_video1izy028.video15786489183001.
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Affiliation(s)
- Kaiyue Peng
- Department of Gastroenterology, Children's Hospital of Fudan University, Shanghai, China
| | - Xiaowen Qian
- Department of Hematology and Oncology, Children's Hospital of Fudan University, Shanghai, China
| | - Zhiheng Huang
- Department of Gastroenterology, Children's Hospital of Fudan University, Shanghai, China
| | - Junping Lu
- Department of Gastroenterology, Children's Hospital of Fudan University, Shanghai, China
| | - Yuhuan Wang
- Department of Gastroenterology, Children's Hospital of Fudan University, Shanghai, China
| | - Ying Zhou
- Department of Gastroenterology, Children's Hospital of Fudan University, Shanghai, China
| | - Huijun Wang
- Molecular Genetic Diagnosis Center, Shanghai Key Lab Birth Defects, Pediatric Research Institute, Children' s Hospital of Fudan University, Shanghai, China
| | - Bingbing Wu
- Molecular Genetic Diagnosis Center, Shanghai Key Lab Birth Defects, Pediatric Research Institute, Children' s Hospital of Fudan University, Shanghai, China
| | - Ying Wang
- Molecular Genetic Diagnosis Center, Shanghai Key Lab Birth Defects, Pediatric Research Institute, Children' s Hospital of Fudan University, Shanghai, China
| | - Lingli Chen
- Department of Pathology, Zhongshan Hospital of Fudan University, Shanghai, China
| | - Xiaowen Zhai
- Department of Hematology and Oncology, Children's Hospital of Fudan University, Shanghai, China
| | - Ying Huang
- Department of Gastroenterology, Children's Hospital of Fudan University, Shanghai, China
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Kobayashi K, Tomita H, Shimizu M, Tanaka T, Suzui N, Miyazaki T, Hara A. p53 Expression as a Diagnostic Biomarker in Ulcerative Colitis-Associated Cancer. Int J Mol Sci 2017; 18:1284. [PMID: 28621756 PMCID: PMC5486106 DOI: 10.3390/ijms18061284] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Ulcerative colitis (UC) is defined as an idiopathic inflammatory disorder primarily involving the mucosa and submucosa of the colon. UC-associated colon cancers (also known as colitic cancers) develop through the inflammation-dysplasia sequence, which is a major problem affecting the prognosis of patients with UC. It is therefore very important to detect malignancy from UC at an early stage. As precancerous lesions arising in UC, there are pathological adenomatous changes, basal cell changes, in situ anaplasia, clear cell changes, and pan-cellular change. It is considered that the mutation of the p53 gene plays a crucial role, and the protein expression of p53 in dysplastic crypts may serve as a good biomarker in the early stages of UC-associated colon carcinogenesis. Immunohistochemistry for p53 is a very valuable diagnostic tool in UC-associated colon cancers. However, protein expression of p53 is not always universal, and additional methods may be required to assess p53 status in UC-associated colon cancers.
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Affiliation(s)
| | - Hiroyuki Tomita
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Masahito Shimizu
- Department of Gastroenterology/Internal Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
| | - Takuji Tanaka
- Department of Diagnostic Pathology (DDP) & Research Center of Diagnostic Pathology (RC-DiP), Gifu Municipal Hospital, 7-1. Kashima-tyo, Gifu 500-8513, Japan.
| | - Natsuko Suzui
- Pathology Division, Gifu University Hospital, Gifu 501-1194, Japan.
| | | | - Akira Hara
- Pathology Division, Gifu University Hospital, Gifu 501-1194, Japan.
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.
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Mutations in Interleukin-10 Receptor and Clinical Phenotypes in Patients with Very Early Onset Inflammatory Bowel Disease: A Chinese VEO-IBD Collaboration Group Survey. Inflamm Bowel Dis 2017; 23:578-590. [PMID: 28267044 DOI: 10.1097/mib.0000000000001058] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Interleukin-10 (IL10) signaling plays an important role in the pathogenesis of very early onset inflammatory bowel disease (VEO-IBD) in children. However, little is known about the role of the IL10 axis in children with VEO-IBD in China. METHODS The Chinese VEO-IBD Collaboration Group was created to collect clinical and genetic data from patients deficient in IL10 and the IL10 receptor. High-throughput sequencing was performed to identify mutations in these genes. RESULTS We identified 32 compound heterozygous mutations and 9 homozygous mutations in IL10 receptor subunit alpha and 1 homozygous mutation in IL10 receptor subunit beta. Among these mutations, 10 novel mutations were identified, and 6 pathogenic mutations had been previously described. In patients with IL10 receptor subunit alpha mutations, c.301C>T (p.R101RW) and c.537 G>A (p.T179T) were the most common mutations. For 88.1% of the patients, the initial symptom was diarrhea, with a time of onset of 10.4 ± 8.0 days. Oral ulcers were the first symptom in 23.8% of the patients, with a time of onset of 9.7 ± 2.8 days. Extraintestinal manifestations included perianal abscesses (22/42), perianal fistulas (23/42), oral ulcers (20/42), and recurrent eczema (15/42). Twelve patients underwent enterostomy. These patients also had lower average Z scores in height-for-age and weight-for-age. Various treatment strategies were used, including fecal microbiota transplantation; however, only hematopoietic stem cell transplantation was efficacious. CONCLUSIONS This study identified genotypes and phenotypes of Chinese VEO-IBD infants with IL10 receptor mutations. Our study expands the current knowledge on the involvement of the IL10 axis in patients with VEO-IBD.
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Zhu L, Shi T, Zhong C, Wang Y, Chang M, Liu X. IL-10 and IL-10 Receptor Mutations in Very Early Onset Inflammatory Bowel Disease. Gastroenterology Res 2017; 10:65-69. [PMID: 28496525 PMCID: PMC5412537 DOI: 10.14740/gr740w] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/15/2016] [Indexed: 01/21/2023] Open
Abstract
Very early onset inflammatory bowel disease (VEO-IBD) is a unique disease entity with a complex genetic susceptibility in affected patients. Next-generation gene sequencing techniques have revealed various monogenetic mutations contributing to the pathogenesis of VEO-IBD, including interleukin 10 (IL-10) and IL-10 receptor (IL-10R) mutations. In this article, we reviewed the features of and effective therapeutic options for VEO-IBD with IL-10 and/or IL-10R mutations. The IL-10 signal pathway inhibits the release of several key cytokines and thereby has a significant anti-inflammatory effect in the gastrointestinal tract. Mutations of the genes encoding IL-10 and/or IL-10R have been detected in VEO-IBD patients among myriad populations throughout the world. VEO-IBD patients with IL-10 or IL-10R mutations often present with repeated bouts of bloody diarrhea, marked weight loss, growth retardation, and recurrent perianal problems, including abscesses, fistulas, and significant fissures. Moreover, some patients may have folliculitis and present with pulmonary infections. While the therapeutic efficacy of immunosuppressants is typically poor in these patients, allogeneic hematopoietic stem cell transplantation (HSCT) has been reported to improve symptoms significantly. However, the long-term prognosis of VEO-IBD patients with IL-10 or IL-10R gene mutations treated with HSCT requires further exploration to verify the efficacy and safety of this treatment. We concluded that clinicians should recognize the clinical phenotype of VEO-IBD, as mutational analysis of the IL-10 pathway can support the diagnosis and prompt early treatment of this complicated disease.
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Affiliation(s)
- Lei Zhu
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Dalian Medical University, Dalian City, China
| | - Tingting Shi
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Dalian Medical University, Dalian City, China
| | - Chengdi Zhong
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Dalian Medical University, Dalian City, China
| | - Yingde Wang
- Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Dalian Medical University, Dalian City, China
| | - Michael Chang
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, USA
| | - Xiuli Liu
- Department of Pathology, Immunology, and Laboratory Medicine, University of Florida, Gainesville, FL, USA
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14
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Ben Fredj N, Aissi M, Ben Selma W, Mahmoud I, Nefzi F, Frih-Ayed M, Boukadida J, Aouni M. Association of the IL-10 receptor A536G (S138G) loss-of-function variant with multiple sclerosis in Tunisian patients. APMIS 2017; 125:444-451. [PMID: 28225209 DOI: 10.1111/apm.12659] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 12/21/2016] [Indexed: 11/30/2022]
Abstract
Interleukin-10 (IL-10), a potent anti-inflammatory T-cell cytokine, has been shown to be a regulatory cytokine that is associated with disease remission in multiple sclerosis (MS) and exerts its activity through its cognate cell surface receptor complex, IL-10 receptor 1 (IL-10R1) and IL-10R2. The purpose of this study was to investigate the IL-10R1 S138G loss-of-function polymorphism (A536G: rs3135932) for possible influence on susceptibility and outcome of MS in Tunisian patients. A total of 103 Tunisian MS patients and 160 control subjects were studied. Genomic DNA samples were extracted from leukocytes and used to investigate S138G polymorphism in IL-10R1 gene by multiplex allele-specific polymerase chain reaction. Associations between G allele [odds ratio (OR) = 5.57; 95% confidence intervals (CI) = 3.26-9.54; p = 10-7 ], GG genotypes [OR = 10.41; 95% CI = 2.28-47.58; p = 0.0007] and AG genotype [OR = 4.14; 95% CI = 2.16-7.93; p = 0.000016] with the risk development of MS were found. In contrast, the AA genotype seemed to be associated with protection against MS [OR = 0.17; 95% CI = 0.09-0.30; p = 10-7 ]. No association was found between S138G SNP and clinical features or disease activity of MS patients. In conclusion, our results suggest that S138G loss-of-function polymorphism of the IL-10R1 may be important risk factor in increasing susceptibility to MS.
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Affiliation(s)
- Nadia Ben Fredj
- Laboratory of Transmissible Diseases and Biological Active substances, LR99-ES27, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - Mouna Aissi
- Department of Neurology, Fattouma Bourguiba University Hospital, Monastir, Tunisia
| | - Walid Ben Selma
- Laboratory of Microbiology and Immunology, UR02SP13, Farhat Hached University Hospital, Sousse, Tunisia
| | - Imen Mahmoud
- Department of Neurology, Fattouma Bourguiba University Hospital, Monastir, Tunisia
| | - Faten Nefzi
- Laboratory of Transmissible Diseases and Biological Active substances, LR99-ES27, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
| | - Mahbouba Frih-Ayed
- Department of Neurology, Fattouma Bourguiba University Hospital, Monastir, Tunisia
| | - Jalel Boukadida
- Laboratory of Microbiology and Immunology, UR02SP13, Farhat Hached University Hospital, Sousse, Tunisia
| | - Mahjoub Aouni
- Laboratory of Transmissible Diseases and Biological Active substances, LR99-ES27, Faculty of Pharmacy, University of Monastir, Monastir, Tunisia
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Novel Implications in Molecular Diagnosis of Lynch Syndrome. Gastroenterol Res Pract 2017; 2017:2595098. [PMID: 28250766 PMCID: PMC5303590 DOI: 10.1155/2017/2595098] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 01/05/2017] [Indexed: 02/07/2023] Open
Abstract
About 10% of total colorectal cancers are associated with known Mendelian inheritance, as Familial Adenomatous Polyposis (FAP) and Lynch syndrome (LS). In these cancer types the clinical manifestations of disease are due to mutations in high-risk alleles, with a penetrance at least of 70%. The LS is associated with germline mutations in the DNA mismatch repair (MMR) genes. However, the mutation detection analysis of these genes does not always provide informative results for genetic counseling of LS patients. Very often, the molecular analysis reveals the presence of variants of unknown significance (VUSs) whose interpretation is not easy and requires the combination of different analytical strategies to get a proper assessment of their pathogenicity. In some cases, these VUSs may make a more substantial overall contribution to cancer risk than the well-assessed severe Mendelian variants. Moreover, it could also be possible that the simultaneous presence of these genetic variants in several MMR genes that behave as low risk alleles might contribute in a cooperative manner to increase the risk of hereditary cancer. In this paper, through a review of the recent literature, we have speculated a novel inheritance model in the Lynch syndrome; this could pave the way toward new diagnostic perspectives.
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16
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Xiao Y, Wang XQ, Yu Y, Guo Y, Xu X, Gong L, Zhou T, Li XQ, Xu CD. Comprehensive mutation screening for 10 genes in Chinese patients suffering very early onset inflammatory bowel disease. World J Gastroenterol 2016; 22:5578-88. [PMID: 27350736 PMCID: PMC4917618 DOI: 10.3748/wjg.v22.i24.5578] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 04/13/2016] [Accepted: 04/20/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To perform sequencing analysis in patients with very early-onset inflammatory bowel disease (VEO-IBD) to determine the genetic basis for VEO-IBD in Chinese pediatric patients. METHODS A total of 13 Chinese pediatric patients with VEO-IBD were diagnosed from May 2012 and August 2014. The relevant clinical characteristics of these patients were analyzed. Then DNA in the peripheral blood from patients was extracted. Next generation sequencing (NGS) based on an Illumina-Miseq platform was used to analyze the exons in the coding regions of 10 candidate genes: IL-10, IL-10RA, IL-10RB, NOD2, FUT2, IL23R, GPR35, GPR65, TNFSF15, and ADAM30. The Sanger sequencing was used to verify the variations detected in NGS. RESULTS Out of the 13 pediatric patients, ten were diagnosed with Crohn's disease, and three diagnosed with ulcerative colitis. Mutations in IL-10RA and IL-10RB were detected in five patients. There were four patients who had single nucleotide polymorphisms associated with IBD. Two patients had IL-10RA and FUT2 polymorphisms, and two patients had IL-10RB and FUT2 polymorphisms. Gene variations were not found in the rest four patients. Children with mutations had lower percentile body weight (1.0% vs 27.5%, P = 0.002) and hemoglobin (87.4 g/L vs 108.5 g/L, P = 0.040) when compared with children without mutations. Although the age of onset was earlier, height was shorter, and the response to treatment was poorer in the mutation group, there was no significant difference in these factors between groups. CONCLUSION IL-10RA and IL-10RB mutations are common in Chinese children with VEO-IBD. Patients with mutations have an earlier disease onset, lower body weight and hemoglobin, and poorer prognosis.
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Capriati T, Cardile S, Papadatou B, Romano C, Knafelz D, Bracci F, Diamanti A. Pediatric inflammatory bowel disease: specificity of very early onset. Expert Rev Clin Immunol 2016; 12:963-72. [DOI: 10.1080/1744666x.2016.1184571] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Hu X, Han C, Jin J, Qin K, Zhang H, Li T, Li N, Cao X. Integrin CD11b attenuates colitis by strengthening Src-Akt pathway to polarize anti-inflammatory IL-10 expression. Sci Rep 2016; 6:26252. [PMID: 27188220 PMCID: PMC4870583 DOI: 10.1038/srep26252] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 04/28/2016] [Indexed: 12/20/2022] Open
Abstract
Interleukin-10 (IL-10) plays a central role in regulation of intestinal mucosal homeostasis and prevention of inflammatory bowel disease (IBD). We previously reported that CD11b(hi) regulatory dendritic cells (DCs) can produce more IL-10, and CD11b can negatively regulate Toll-like receptors (TLRs)-induced inflammatory responses in macrophages. However whether CD11b and its signaling can control autoimmunity via IL-10 production remains unclear. Here we found that CD11b deficient (Itgam(-/-)) mice were more susceptible to dextran sulfate sodium (DSS)-induced colitis, with more tumor necrosis factor α (TNF-α) while less IL-10 production. CD11b inhibited nuclear factor-kappa B (NF-κB) while promoted activator protein 1 (AP-1) activation through activating sarcoma oncogene (Src), leading to decreased TNF-α while increased IL-10 production. Src interacted with and promoted c-casitas B lineage lymphoma proto-oncogene (c-Cbl)-mediated degradation of the inhibitory subunit p85 of phosphatidylinositol 3-kinase (PI3K). Importantly, Src inhibitor dasatinib aggravated DSS-induced colitis by decreasing IL-10 while increasing TNF-α in vivo. Therefore, CD11b promotes IL-10 production by activating Src-Akt signal pathway. An axis of CD11b-Src pathway is important in balancing homeostasis of TLR-induced pro-inflammatory and anti-inflammatory responses.
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Affiliation(s)
- Xiang Hu
- National Key Laboratory of Medical Molecular Biology &Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Chaofeng Han
- National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Jing Jin
- National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Kewei Qin
- National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Hua Zhang
- National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Tianliang Li
- National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Nan Li
- National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai, China
| | - Xuetao Cao
- National Key Laboratory of Medical Molecular Biology &Department of Immunology, Institute of Basic Medical Sciences, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China.,National Key Laboratory of Medical Immunology &Institute of Immunology, Second Military Medical University, Shanghai, China
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DURATURO FRANCESCA, LICCARDO RAFFAELLA, CAVALLO ANGELA, DE ROSA MARINA, ROSSI GIOVANNIBATTISTA, IZZO PAOLA. Multivariate analysis as a method for evaluating the pathogenicity of novel genetic MLH1 variants in patients with colorectal cancer and microsatellite instability. Int J Mol Med 2015; 36:511-7. [DOI: 10.3892/ijmm.2015.2255] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 05/20/2015] [Indexed: 11/06/2022] Open
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20
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Costabile V, Duraturo F, Delrio P, Rega D, Pace U, Liccardo R, Rossi GB, Genesio R, Nitsch L, Izzo P, De Rosa M. Lithium chloride induces mesenchymal‑to‑epithelial reverting transition in primary colon cancer cell cultures. Int J Oncol 2015; 46:1913-23. [PMID: 25738332 PMCID: PMC4383027 DOI: 10.3892/ijo.2015.2911] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Accepted: 12/18/2014] [Indexed: 12/21/2022] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) confers stem cell-like phenotype and more motile properties to carcinoma cells. During EMT, the expression of E-cadherin decreases, resulting in loss of cell-cell adhesion and increased migration. Expression of Twist1 and other pleiotropic transcription factors, such as Snail, is known to activate EMT. We established primary colon cancer cell cultures from samples of operated patients and validated cultures by cytogenetic and molecular biology approaches. Western blot assay, quantitative real-time PCR and immunofluorescence were performed to investigate the expression of E-cadherin, vimentin, β-catenin, cytokeratin-20 and -18, Twist1, Snail, CD44, cyclooxygenase-2 (COX2), Sox2, Oct4 and Nanog. Moreover, cell differentiation was induced by incubation with LiCl-containing medium for 10 days. We observed that these primary colorectal cancer (CRC) cells lost expression of the E-cadherin epithelial marker, which was instead expressed in cancer and normal colon mucosa of the same patient, while overexpressed vimentin (mesenchymal marker), Twist1, Snail (EMT markers) and COX2. Cytokeratin-18 was expressed both in tissues and cell cultures. Expression of stem cell markers, such as CD44, Oct4 and Nanog, were also observed. Following differentiation with the glycogen synthase kinase 3β (GSK3β) inhibitor LiCl, the cells began to express E-cadherin and, at once, Twist1 and Snail expression was strongly downregulated, suggesting a MET-reverting process. In conclusion, we established primary colon mesenchymal cancer cell cultures expressing mesenchymal and epithelial biomarkers together with high level of EMT transcription factors. We propose that they could represent a good model for studying EMT and its reverting mechanism, the mesenchymal-to-epithelial transition (MET). Our observation indicates that LiCl, a GSK3β inhibitor, induces MET in vitro, suggesting that LiCl and GSK3β could represent, respectively, interesting drug, and target for CRC therapy.
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Affiliation(s)
- Valeria Costabile
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico Ⅱ, I‑80131 Naples, Italy
| | - Francesca Duraturo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico Ⅱ, I‑80131 Naples, Italy
| | - Paolo Delrio
- Colorectal Surgical Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori, ̔Fondazione Giovanni Pascale̓ IRCCS, I‑80131 Naples, Italy
| | - Daniela Rega
- Colorectal Surgical Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori, ̔Fondazione Giovanni Pascale̓ IRCCS, I‑80131 Naples, Italy
| | - Ugo Pace
- Colorectal Surgical Oncology, Istituto Nazionale per lo Studio e la Cura dei Tumori, ̔Fondazione Giovanni Pascale̓ IRCCS, I‑80131 Naples, Italy
| | - Raffaella Liccardo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico Ⅱ, I‑80131 Naples, Italy
| | - Giovanni Battista Rossi
- Endoscopy Unit, Istituto Nazionale per lo Studio e la Cura dei Tumori, ̔Fondazione Giovanni Pascale̓ IRCCS, I‑80131 Naples, Italy
| | - Rita Genesio
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico Ⅱ, I‑80131 Naples, Italy
| | - Lucio Nitsch
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico Ⅱ, I‑80131 Naples, Italy
| | - Paola Izzo
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico Ⅱ, I‑80131 Naples, Italy
| | - Marina De Rosa
- Department of Molecular Medicine and Medical Biotechnology, University of Naples Federico Ⅱ, I‑80131 Naples, Italy
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HMGA1 silencing restores normal stem cell characteristics in colon cancer stem cells by increasing p53 levels. Oncotarget 2015; 5:3234-45. [PMID: 24833610 PMCID: PMC4102806 DOI: 10.18632/oncotarget.1914] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
High-mobility group A1 (HMGA1) proteins are architectural chromatinic proteins, abundantly expressed during embryogenesis and in most cancer tissues, but expressed at low levels or absent in normal adult tissues. Several studies have demonstrated that HMGA1 proteins play a causal role in neoplastic cell transformation. The aim of this study was to investigate the role of these proteins in the control of cancer stem cells (CSCs), which have emerged as a preferred target in cancer therapy, because of their role in cancer recurrence. We observed that HMGA1 is overexpressed in colon tumour stem cell (CTSC) lines compared to normal and colon cancer tissues. We demonstrated that HMGA1 silencing in CTSCs increases stem cell quiescence and reduces self-renewal and sphere-forming efficiency (SFE). The latter, together with the upregulation and asymmetric distribution of NUMB, is indicative of the recovery of an asymmetric division pattern, typical of normal stem cells. We further found that HMGA1 transcriptionally regulates p53, which is known to control the balance between symmetric and asymmetric divisions in CSCs. Therefore, our data indicate a critical role for HMGA1 in regulating both self-renewal and the symmetric/asymmetric division ratio in CSCs, suggesting that blocking HMGA1 function may be an effective anti-cancer therapy.
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Lee CH, Hsu P, Nanan B, Nanan R, Wong M, Gaskin KJ, Leong RW, Murchie R, Muise AM, Stormon MO. Novel de novo mutations of the interleukin-10 receptor gene lead to infantile onset inflammatory bowel disease. J Crohns Colitis 2014; 8:1551-6. [PMID: 24813381 DOI: 10.1016/j.crohns.2014.04.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 04/02/2014] [Accepted: 04/13/2014] [Indexed: 02/08/2023]
Abstract
BACKGROUND AND AIMS Defects in the interleukin 10 (IL-10) signalling pathway have been shown to cause very early onset inflammatory bowel disease (IBD). We report a patient with severe infantile-onset IBD with a compound heterozygous IL-10 receptor alpha subunit (IL-10RA) mutation, one of which was paternally-inherited and the other occurring de novo. METHODS Deep sequencing of IL-10, IL-10RA and IL-10 receptor beta subunit (IL-10RB) were performed. Peripheral blood mononuclear cell (PBMC) surface expression of IL-10RA was analysed by flow cytometry. IL-10 signalling pathway was examined by measuring phosphorylated STAT3 in PBMC cultured in the presence of IL-6 or IL-10. RESULT We identified a missense mutation in exon 4 of IL-10RA (c.583T>C) in one allele and a nonsense mutation in exon 7 of IL-10RA (c.1368G>T) in the other allele. Neither mutation has been reported previously. The patient has functional IL-10RA deficiency despite normal IL-10RA expression. CONCLUSION This represents the first case report of a de novo mutation of IL-10RA that is associated with very early onset severe IBD. Therefore, IL-10 pathway defect should be considered in patients with infantile-onset IBD even if the parents are non-consanguineous.
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Affiliation(s)
- Cheng Hiang Lee
- The Children's Hospital at Westmead, Sydney, Australia; The James Fairfax Institute of Paediatric Nutrition, The University of Sydney, Australia; The Children's Hospital at Westmead Clinical School, The University of Sydney, Australia.
| | - Peter Hsu
- The Children's Hospital at Westmead, Sydney, Australia; Sydney Medical School Nepean, The University of Sydney, Australia.
| | - Brigitte Nanan
- Sydney Medical School Nepean, The University of Sydney, Australia.
| | - Ralph Nanan
- Sydney Medical School Nepean, The University of Sydney, Australia.
| | - Melanie Wong
- The Children's Hospital at Westmead, Sydney, Australia; The Children's Hospital at Westmead Clinical School, The University of Sydney, Australia.
| | - Kevin J Gaskin
- The Children's Hospital at Westmead, Sydney, Australia; The James Fairfax Institute of Paediatric Nutrition, The University of Sydney, Australia.
| | - Rupert W Leong
- Concord Repatriation General Hospital, Sydney, Australia; The University of New South Wales, Sydney, Australia.
| | - Ryan Murchie
- SickKids Inflammatory Bowel Disease Center and Cell Biology Program, Research Institute, and Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, University of Toronto, Hospital for Sick Children, Toronto, ON, Canada.
| | - Aleixo M Muise
- SickKids Inflammatory Bowel Disease Center and Cell Biology Program, Research Institute, and Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, University of Toronto, Hospital for Sick Children, Toronto, ON, Canada.
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Immuno-genomic profiling of patients with inflammatory bowel disease: a systematic review of genetic and functional in vivo studies of implicated genes. Inflamm Bowel Dis 2014; 20:1813-9. [PMID: 25171511 DOI: 10.1097/mib.0000000000000174] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Over the last 2 decades, there has been an ever-expanding catalog of genetic variants implicated in inflammatory bowel disease (IBD) through genome-wide association studies and next generation sequencing. In this article, we highlight the remarkable developments in understanding the genetic and immunological basis of IBD. The main objective of the study was to perform a systematic review of published literature detailing functional/immunological studies in patients known to harbor genetic variations in the implicated genes. METHODS A panel of 71 candidate genes implicated in IBD was prioritized using 5 network connectivity in silico methods. An electronic search using MEDLINE and EMBASE from 1996 to February 2014 for each of the selected genes was conducted. Only studies describing genotyped IBD cohorts with concurrent in vivo functional studies were included. RESULTS Between the reviewers, a total of 35,142 potentially eligible publications were identified. Only 8 genes had publications meeting the inclusion criteria. A total of 67 studies were identified across the selected genes. The NOD2 gene had the most number with 41 studies followed by IL-10 with 11 eligible studies. A meta-analysis was not practical given the heterogeneity of the study design and the number of implicated genes with diverse immunological and physiological functions. CONCLUSIONS There is a clear lack of functional studies in humans to assess the in vivo impact of the various genetic variants implicated. A collaborative approach merging genomics and functional studies will help to unravel the obscure mechanisms involved in IBD.
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Energy independent uptake and release of polystyrene nanoparticles in primary mammalian cell cultures. Exp Cell Res 2014; 330:240-247. [PMID: 25246129 DOI: 10.1016/j.yexcr.2014.09.017] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2014] [Revised: 09/10/2014] [Accepted: 09/11/2014] [Indexed: 01/03/2023]
Abstract
Nanoparticle (NPs) delivery systems in vivo promises to overcome many obstacles associated with the administration of drugs, vaccines, plasmid DNA and RNA materials, making the study of their cellular uptake a central issue in nanomedicine. The uptake of NPs may be influenced by the cell culture stage and the NPs physical-chemical properties. So far, controversial data on NPs uptake have been derived owing to the heterogeneity of NPs and the general use of immortalized cancer cell lines that often behave differently from each other and from primary mammalian cell cultures. Main aims of the present study were to investigate the uptake, endocytosis pathways, intracellular fate and release of well standardized model particles, i.e. fluorescent 44 nm polystyrene NPs (PS-NPs), on two primary mammalian cell cultures, i.e. bovine oviductal epithelial cells (BOEC) and human colon fibroblasts (HCF) by confocal microscopy and spectrofluorimetric analysis. Different drugs and conditions that inhibit specific internalization routes were used to understand the mechanisms that mediate PS-NP uptake. Our data showed that PS-NPs are rapidly internalized by both cell types 1) with similar saturation kinetics; 2) through ATP-independent processes, and 3) quickly released in the culture medium. Our results suggest that PS-NPs are able to rapidly cross the cell membrane through passive translocation during both uptake and release, and emphasize the need to carefully design NPs for drug delivery, to ensure their selective uptake and to optimize their retainment in the targeted cells.
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Principi M, Barone M, Pricci M, De Tullio N, Losurdo G, Ierardi E, Di Leo A. Ulcerative colitis: from inflammation to cancer. Do estrogen receptors have a role? World J Gastroenterol 2014; 20:11496-11504. [PMID: 25206257 PMCID: PMC4155343 DOI: 10.3748/wjg.v20.i33.11496] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 03/29/2014] [Accepted: 05/23/2014] [Indexed: 02/06/2023] Open
Abstract
Ulcerative colitis (UC) is a condition at increased risk for colorectal carcinoma (CRC) development. Nowadays, screening and follow-up programs are routinely performed worldwide to promote the early detection of CRCs in subjects with well known risk factors (extent, duration and severity of the disorder). The diffusion of these procedures is presumably the main reason for the marked reduction of cancer incidence and mortality in the course of UC. In addition, chemoprevention has been widely investigated and developed in many medical fields, and aspirin has shown a preventive effect against CRC, while mesalazine has been strongly invoked as a potential chemopreventive agent in UC. However, available studies show some limitations due to the obvious ethical implications of drug withdrawal in UC in order to design a control group. The estrogen receptors (ER) alpha/beta balance seems to have a relevant influence on colorectal carcinogenesis and ER beta appears to parallel apoptosis, and hence an anti-carcinogenic effect. Phytoestrogens are compounds acting as ER beta agonists and have shown a promising chemopreventive effect on sporadic as well as genetically inherited CRC. There is evidence suggesting a role for ERs in UC-related carcinogenesis. In this perspective, since these substances can be considered as dietary supplements and are completely free from side effects, phytoestrogens could be an interesting option for CRC prevention, even when the disease is a consequence of long-term chronic inflammation, as in the course of UC. Further studies of their effects are warranted in both the basic research and clinical fields.
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