1
|
Yue H, Yang X, Wu X, Tian Y, Xu P, Sang N. Identification of risk for ovarian disease enhanced by BPB or BPAF exposure. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 319:120980. [PMID: 36587784 DOI: 10.1016/j.envpol.2022.120980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/06/2022] [Accepted: 12/28/2022] [Indexed: 06/17/2023]
Abstract
The ban on bisphenol A (BPA) has led to a rapid increase in the use of BPA analogs, and they are increasingly being detected in the natural environment and biological organisms. Studies have pointed out that BPA analogs can lead to adverse health outcomes. However, their interference with ovarian tissue has not been fully elucidated. In this study, seven- to eight-week-old CD-1 mice were exposed to corn oil containing 300 μg/kg/day bisphenol B (BPB) or bisphenol AF (BPAF) through oral gavage, and ovarian tissues were collected at 14 and 28 days of exposure. Ovarian toxicity was evaluated by the ovarian index, ovarian area, and follicle number. mRNA-seq was used to identify differentially expressed genes (DEGs) and infer the association of DEGs with ovarian diseases. BPB or BPAF exposure induced morphological changes in ovarian tissue in CD-1 mice. In addition, Gene Ontology (GO) analysis revealed disturbances in biological processes (BP) associated with steroid biosynthetic process (GO:0006694) and cellular calcium ion homeostasis (GO:0006874). Subsequently, regulatory networks of BPA analogs (BPB or BPAF)-DEGs-ovarian diseases were constructed. Importantly, the expression levels of DEGs and transcription factors (TFs) associated with ovarian disease were altered. BPB or BPAF exposure causes damage to ovarian morphology through the synergistic effects of multiple biological processes and may be associated with altered mRNA expression profiles as a risk factor for ovarian diseases.
Collapse
Affiliation(s)
- Huifeng Yue
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China.
| | - Xiaowen Yang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Xiaoyun Wu
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Yuchai Tian
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Pengchong Xu
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| | - Nan Sang
- College of Environment and Resource, Research Center of Environment and Health, Shanxi University, Taiyuan, Shanxi 030006, PR China
| |
Collapse
|
2
|
Barik GK, Sahay O, Paul D, Santra MK. Ezrin gone rogue in cancer progression and metastasis: An enticing therapeutic target. Biochim Biophys Acta Rev Cancer 2022; 1877:188753. [PMID: 35752404 DOI: 10.1016/j.bbcan.2022.188753] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 06/16/2022] [Accepted: 06/18/2022] [Indexed: 12/12/2022]
Abstract
Cancer metastasis is the primary cause of morbidity and mortality in cancer as it remains the most complicated, devastating, and enigmatic aspect of cancer. Several decades of extensive research have identified several key players closely associated with metastasis. Among these players, cytoskeletal linker Ezrin (the founding member of the ERM (Ezrin-Radixin-Moesin) family) was identified as a critical promoter of metastasis in pediatric cancers in the early 21st century. Ezrin was discovered 40 years ago as a aminor component of intestinal epithelial microvillus core protein, which is enriched in actin-containing cell surface structures. It controls gastric acid secretion and plays diverse physiological roles including maintaining cell polarity, regulating cell adhesion, cell motility and morphogenesis. Extensive research for more than two decades evinces that Ezrin is frequently dysregulated in several human cancers. Overexpression, altered subcellular localization and/or aberrant activation of Ezrin are closely associated with higher metastatic incidence and patient mortality, thereby justifying Ezrin as a valuable prognostic biomarker in cancer. Ezrin plays multifaceted role in multiple aspects of cancer, with its significant contribution in the complex metastatic cascade, through reorganizing the cytoskeleton and deregulating various cellular signaling pathways. Current preclinical studies using genetic and/or pharmacological approaches reveal that inactivation of Ezrin results in significant inhibition of Ezrin-mediated tumor growth and metastasis as well as increase in the sensitivity of cancer cells to various chemotherapeutic drugs. In this review, we discuss the recent advances illuminating the molecular mechanisms responsible for Ezrin dysregulation in cancer and its pleiotropic role in cancer progression and metastasis. We also highlight its potential as a prognostic biomarker and therapeutic target in various cancers. More importantly, we put forward some potential questions, which we strongly believe, will stimulate both basic and translational research to better understand Ezrin-mediated malignancy, ultimately leading to the development of Ezrin-targeted cancer therapy for the betterment of human life.
Collapse
Affiliation(s)
- Ganesh Kumar Barik
- Cancer Biology Division, National Centre for Cell Science, Ganeshkhind Road, Pune, Maharashtra 411007, India; Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra 411007, India
| | - Osheen Sahay
- Cancer Biology Division, National Centre for Cell Science, Ganeshkhind Road, Pune, Maharashtra 411007, India; Department of Biotechnology, Savitribai Phule Pune University, Ganeshkhind Road, Pune, Maharashtra 411007, India
| | - Debasish Paul
- Laboratory of Cancer Biology and Genetics, Centre for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Manas Kumar Santra
- Cancer Biology Division, National Centre for Cell Science, Ganeshkhind Road, Pune, Maharashtra 411007, India.
| |
Collapse
|
3
|
Song M, Suh P. O‐GlcNAcylation regulates lysophosphatidic acid‐induced cell migration by regulating ERM family proteins. FEBS Open Bio 2022; 12:1220-1229. [PMID: 35347892 PMCID: PMC9157403 DOI: 10.1002/2211-5463.13404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2021] [Revised: 10/04/2021] [Accepted: 03/28/2022] [Indexed: 11/18/2022] Open
Abstract
O‐GlcNAcylation of intracellular proteins (O‐GlcNAc) is a post‐translational modification that often competes with phosphorylation in diverse cellular signaling pathways. Recent studies on human malignant tumors have demonstrated that O‐GlcNAc is implicated in cellular features relevant to metastasis. Here, we report that lysophosphatidic acid (LPA)‐induced ovarian cancer cell (OVCAR‐3) migration is regulated by O‐GlcNAc. We found that O‐GlcNAc modification of ERM family proteins, a membrane‐cytoskeletal crosslinker, was inversely correlated with its phosphorylation status. Moreover, the LPA‐induced formation of membrane protrusion structures, as well as the migration of OVCAR‐3 cells, was reduced by the accumulation of O‐GlcNAc. Collectively, these findings suggest that O‐GlcNAc is an essential signaling element controlling ERM family proteins involved in OVCAR‐3 cell migration.
Collapse
Affiliation(s)
- Minseok Song
- Department of Life Sciences Yeungnam University Gyeongsan Gyeongbuk 38541 South Korea
| | - Pann‐Ghill Suh
- Korea Basic Science Research Institute (KBRI) Daegu Republic of Korea
| |
Collapse
|
4
|
Kawaguchi K, Asano S. Pathophysiological Roles of Actin-Binding Scaffold Protein, Ezrin. Int J Mol Sci 2022; 23:ijms23063246. [PMID: 35328667 PMCID: PMC8952289 DOI: 10.3390/ijms23063246] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/14/2022] [Accepted: 03/14/2022] [Indexed: 02/06/2023] Open
Abstract
Ezrin is one of the members of the ezrin/radixin/moesin (ERM) family of proteins. It was originally discovered as an actin-binding protein in the microvilli structure about forty years ago. Since then, it has been revealed as a key protein with functions in a variety of fields including cell migration, survival, and signal transduction, as well as functioning as a structural component. Ezrin acts as a cross-linker of membrane proteins or phospholipids in the plasma membrane and the actin cytoskeleton. It also functions as a platform for signaling molecules at the cell surface. Moreover, ezrin is regarded as an important target protein in cancer diagnosis and therapy because it is a key protein involved in cancer progression and metastasis, and its high expression is linked to poor survival in many cancers. Small molecule inhibitors of ezrin have been developed and investigated as candidate molecules that suppress cancer metastasis. Here, we wish to comprehensively review the roles of ezrin from the pathophysiological points of view.
Collapse
|
5
|
Noi M, Mukaisho KI, Murakami S, Koshinuma S, Machida Y, Yamori M, Nakayama T, Ogawa T, Nakata Y, Shimizu T, Yamamoto G, Sugihara H. Expressions of ezrin, ERK, STAT3, and AKT in tongue cancer and association with tumor characteristics and patient survival. Clin Exp Dent Res 2020; 6:420-427. [PMID: 32281236 PMCID: PMC7453773 DOI: 10.1002/cre2.293] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 02/07/2020] [Accepted: 03/06/2020] [Indexed: 12/14/2022] Open
Abstract
Background Ezrin, ERK, STAT3, and AKT are proteins that are overexpressed in various types of cancer, although their expressions in tongue cancer has received less focus. This study aimed to address associations between the expression levels of these proteins and with characteristics of the tumor and patient survival. Methods We performed immunohistochemical staining of ezrin, ERK, STAT3, and AKT in tumors from patients with tongue carcinoma in situ (CIS, n = 17) and tongue squamous cell carcinoma (SCC, n = 46). Statistical differences between the SCC versus the CIS cohorts were estimated by calculations of bivariate odds ratios of low versus high expression of the proteins. Fisher's exact tests were used to appraise interassociations between the proteins, as well as expression levels versus patient and tumor characteristics. Survival based on Kaplan–Meier statistics in combination log‐rank tests were used to address potential effects of the patient and tumor characteristics versus 5‐year survival rate. Results The relative high: low expression of all four proteins in the two cohorts differed, and particularly ERK was markedly overexpressed in the SCC versus the CIS cohort (odds ratio = 45.3, p < .01). The relative high: low expression each protein versus patient and tumor characteristics; showed associations between AKT expression and T stage (p = .002) plus node metastases (p = .12), and between ERK expression and drinking (p = .01) and smoking history (p = .01). There was no significant difference observed between ERK and the three other molecules, nor any significant difference between the degree of expression of each protein and the 5‐year disease‐specific survival rate. Conclusion Ezrin, ERK, STAT3, and AKT appear to be involved in the progress from carcinoma in situ in the tongue into squamous cell carcinoma. ERK in particular is overexpressed, suggesting that ERK may be a novel therapeutic target for preventing tongue cancer.
Collapse
Affiliation(s)
- Masaharu Noi
- Department of Oral and Maxillofacial Surgery, Shiga University of Medical Science, Ōtsu, Japan.,Division of Molecular Diagnostic Pathology, Department of Pathology, Shiga University of Medical Science, Ōtsu, Japan
| | - Ken-Ichi Mukaisho
- Division of Molecular Diagnostic Pathology, Department of Pathology, Shiga University of Medical Science, Ōtsu, Japan
| | - Shoko Murakami
- Department of Oral and Maxillofacial Surgery, Shiga University of Medical Science, Ōtsu, Japan.,Division of Molecular Diagnostic Pathology, Department of Pathology, Shiga University of Medical Science, Ōtsu, Japan
| | - Shinya Koshinuma
- Department of Oral and Maxillofacial Surgery, Shiga University of Medical Science, Ōtsu, Japan
| | - Yoshisato Machida
- Department of Oral and Maxillofacial Surgery, Shiga University of Medical Science, Ōtsu, Japan
| | - Masashi Yamori
- Department of Oral and Maxillofacial Surgery, Shiga University of Medical Science, Ōtsu, Japan
| | - Takahisa Nakayama
- Division of Molecular Diagnostic Pathology, Department of Pathology, Shiga University of Medical Science, Ōtsu, Japan
| | - Takao Ogawa
- Department of Otorhinolaryngology, Shiga University of Medical Science, Ōtsu, Japan
| | - Yusuke Nakata
- Department of Otorhinolaryngology, Shiga University of Medical Science, Ōtsu, Japan
| | - Takeshi Shimizu
- Department of Otorhinolaryngology, Shiga University of Medical Science, Ōtsu, Japan
| | - Gaku Yamamoto
- Department of Oral and Maxillofacial Surgery, Shiga University of Medical Science, Ōtsu, Japan
| | - Hiroyuki Sugihara
- Division of Molecular Diagnostic Pathology, Department of Pathology, Shiga University of Medical Science, Ōtsu, Japan
| |
Collapse
|
6
|
Jaskiewicz NM, Townson DH. Hyper-O-GlcNAcylation promotes epithelial-mesenchymal transition in endometrial cancer cells. Oncotarget 2019; 10:2899-2910. [PMID: 31080560 PMCID: PMC6499600 DOI: 10.18632/oncotarget.26884] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2018] [Accepted: 04/03/2019] [Indexed: 01/06/2023] Open
Abstract
Diabetic women have a 2–3 fold increased risk of developing endometrial cancer, however, the molecular aspects of this risk are not fully understood. This study investigated the alteration of cellular O-GlcNAcylation of proteins as the potential mechanistic connection between these two conditions. The endometrial cancer cell line (Ishikawa) was utilized to study the effect of dysregulation of O-GlcNAcylation on epithelial mesenchymal transition (EMT). Hyper-O-GlcNAcylation (via 1 μM Thiamet-G/ThmG or 25 mM Glucose) enhanced the expression of EMT-associated genes (WNT5B and FOXC2), and protein expression of the EMT adhesion molecule, N-Cadherin. Reorganization of stress filaments (actin filaments), consistent with EMT, was also noted in ThmG-treated cells. Interestingly, Hypo-O-GlcNAcylation (via 50 μM OSMI-1) also upregulated WNT5B, inferring that any disruption to O-GlcNAc cycling impacts EMT. However, Hypo-O-GlcNAcylation reduced overall cellular proliferation/migration and the expression of pro-EMT genes (AHNAK, TGFB2, FGFBP1, CALD1, TFPI2). In summary, disruption of O-GlcNAc cycling (i.e., Hyper- or Hypo-O-GlcNAcylation) promoted EMT at both the molecular and cellular levels, but only Hyper-O-GlcNAcylation provoked cellular proliferation/migration, and cytoskeletal reorganization.
Collapse
Affiliation(s)
- Nicole Morin Jaskiewicz
- Department of Molecular, Cellular and Biomedical Sciences, University of New Hampshire, Durham, NH, USA
| | - David H Townson
- Department of Animal and Veterinary Sciences, University of Vermont, Burlington, VT, USA
| |
Collapse
|
7
|
Song J, Jin P, Li M, Liu J, Wu D, Yao H, Wang J. Antibacterial properties and biocompatibility in vivo and vitro of composite coating of pure magnesium ultrasonic micro-arc oxidation phytic acid copper loaded. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2019; 30:49. [PMID: 30993460 DOI: 10.1007/s10856-019-6251-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Accepted: 08/17/2018] [Indexed: 06/09/2023]
Abstract
Bone infection and implant secondary removal remains a clinical challenge. We used ultrasonic micro-arc oxidation (UMAO) and conversion of phytic acid copper plating to prepare a pure magnesium polyhydric biofilm; we evaluated the surface microstructures, phase, element composition, and wettability of the film in vitro. The antibacterial activity of films with different Cu contents was confirmed by coating method, imaging examination, and microbiological cultures in vitro. The biocompatibility of biofilms was confirmed by cell proliferation, vitality, and morphology assays in vitro and histological evaluation in vivo. MC3T3-E1 cells were co-cultured with different films to assess cell viability on the films. The results showed that the mass fraction of Cu increased with increasing time of copper plating, and the surface of the Cu group was more dense and uniform. Additionally, copper coating significantly inhibited the growth of E. coli and Staphylococcus aurous. We also found that the adhesion, proliferation, and differentiation of the cells on the surface of copper plating were enhanced. Copper implantation of animals in vivo showed fine ability to promote bone growth. Antibacterial activity and biocompatibility of pure magnesium UMAO-phytic acid-Cu3min implant film are excellent, so the film has potential application value in the treatment of bone implantation.
Collapse
Affiliation(s)
- Jiaqi Song
- Jiamusi University School of Stomatology, Jiamusi, China
| | - Pengli Jin
- Jiamusi University School of Materials Science and Engineering, Jiamusi, China
| | - Muqin Li
- Jiamusi University School of Materials Science and Engineering, Jiamusi, China.
| | - Jiguang Liu
- Jiamusi University School of Materials Science and Engineering, Jiamusi, China
| | - Dongmei Wu
- Jiamusi University College of Pharmacy, Jiamusi, China
| | - Haitao Yao
- Jiamusi University School of Basic Medical Science, Jiamusi, China
| | - Jiaqi Wang
- Second Affiliated Stomatological Hospital of Jiamusi University, Jiamusi, China
| |
Collapse
|
8
|
Zuo H, Cattani-Cavalieri I, Valença SS, Musheshe N, Schmidt M. Function of cAMP scaffolds in obstructive lung disease: Focus on epithelial-to-mesenchymal transition and oxidative stress. Br J Pharmacol 2019; 176:2402-2415. [PMID: 30714124 PMCID: PMC6592852 DOI: 10.1111/bph.14605] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 01/09/2019] [Accepted: 01/21/2019] [Indexed: 12/14/2022] Open
Abstract
Over the past decades, research has defined cAMP as one of the central cellular nodes in sensing and integrating multiple pathways and as a pivotal role player in lung pathophysiology. Obstructive lung disorders, such as chronic obstructive pulmonary disease (COPD), are characterized by a persistent and progressive airflow limitation and by oxidative stress from endogenous and exogenous insults. The extent of airflow obstruction depends on the relative deposition of different constituents of the extracellular matrix, a process related to epithelial-to-mesenchymal transition, and which subsequently results in airway fibrosis. Oxidative stress from endogenous and also from exogenous sources causes a profound worsening of COPD. Here we describe how cAMP scaffolds and their different signalosomes in different subcellular compartments may contribute to COPD. Future research will require translational studies to alleviate disease symptoms by pharmacologically targeting the cAMP scaffolds. LINKED ARTICLES: This article is part of a themed section on Adrenoceptors-New Roles for Old Players. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v176.14/issuetoc.
Collapse
Affiliation(s)
- Haoxiao Zuo
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Isabella Cattani-Cavalieri
- Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.,Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Samuel Santos Valença
- Institute of Biomedical Sciences, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Nshunge Musheshe
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands
| | - Martina Schmidt
- Department of Molecular Pharmacology, University of Groningen, Groningen, The Netherlands.,Groningen Research Institute for Asthma and COPD (GRIAC), University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| |
Collapse
|
9
|
Mesenchymal stem cells enhance tumorigenic properties of human glioblastoma through independent cell-cell communication mechanisms. Oncotarget 2018; 9:24766-24777. [PMID: 29872504 PMCID: PMC5973871 DOI: 10.18632/oncotarget.25346] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 04/23/2018] [Indexed: 12/25/2022] Open
Abstract
Mesenchymal stem cells (MSC) display tumor tropism and have been addressed as vehicles for delivery of anti-cancer agents. As cellular components of the tumor microenvironment, MSC also influence tumor progression. However, the contribution of MSC in brain cancer is not well understood since either oncogenic or tumor suppressor effects have been reported for these cells. Here, MSC were found capable of stimulating human Glioblastoma (GBM) cell proliferation through a paracrine effect mediated by TGFB1. Moreover, when in direct cell-cell contact with GBM cells, MSC elicited an increased proliferative and invasive tumor cell behavior under 3D conditions, as well as accelerated tumor development in nude mice, independently of paracrine TGFB1. A secretome profiling of MSC-GBM co-cultures identified 126 differentially expressed proteins and 10 proteins exclusively detected under direct cell-cell contact conditions. Most of these proteins are exosome cargos and are involved in cell motility and tissue development. These results indicate a dynamic interaction between MSC and GBM cells, favoring aggressive tumor cell traits through alternative and independent mechanisms. Overall, these findings indicate that MSC may exert pro-tumorigenic effects when in close contact with tumor cells, which must be carefully considered when employing MSC in targeted cell therapy protocols against cancer.
Collapse
|
10
|
Mori K, Toiyama Y, Otake K, Ide S, Imaoka H, Okigami M, Okugawa Y, Fujikawa H, Saigusa S, Hiro J, Kobayashi M, Ohi M, Tanaka K, Inoue Y, Kobayashi Y, Mohri Y, Kobayashi I, Goel A, Kusunoki M. Successful identification of a predictive biomarker for lymph node metastasis in colorectal cancer using a proteomic approach. Oncotarget 2017; 8:106935-106947. [PMID: 29291001 PMCID: PMC5739786 DOI: 10.18632/oncotarget.22149] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 06/29/2017] [Indexed: 12/17/2022] Open
Abstract
Colorectal cancer (CRC)-associated mortality is primarily caused by lymph node (LN) and distant metastasis, highlighting the need for biomarkers that predict LN metastasis and facilitate better therapeutic strategies. We used an Isobaric Tags for Relative and Absolute Quantification (iTRAQ)-based comparative proteomics approach to identify novel biomarkers for predicting LN metastasis in CRC patients. We analyzed five paired samples of CRC with or without LN metastasis, adjacent normal mucosa, and normal colon mucosa, and differentially expressed proteins were identified and subsequently validated at the protein and/or mRNA levels by immunohistochemistry and qRT-PCR, respectively. We identified 55 proteins specifically associated with LN metastasis, from which we selected ezrin for further analysis and functional assessment. Expression of ezrin at both the protein and mRNA levels was significantly higher in CRC tissues than in adjacent normal colonic mucosa. In univariate analysis, high ezrin expression was significantly associated with tumor progression and poor prognosis, which was consistent with our in vitro findings that ezrin promotes the metastatic capacity of CRC cells by enabling cell invasion and migration. In multivariate analysis, high levels of ezrin protein and mRNA in CRC samples were independent predictors of LN metastasis. Our data thus identify ezrin as a novel protein and mRNA biomarker for predicting LN metastasis in CRC patients.
Collapse
Affiliation(s)
- Koichiro Mori
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yuji Toiyama
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Kohei Otake
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Shozo Ide
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Hiroki Imaoka
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Masato Okigami
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yoshinaga Okugawa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Hiroyuki Fujikawa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Susumu Saigusa
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Junichiro Hiro
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Minako Kobayashi
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Masaki Ohi
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Koji Tanaka
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yasuhiro Inoue
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Yuhko Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Mie, Japan
| | - Yasuhiko Mohri
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Mie University, Mie, Japan
| | - Ajay Goel
- Center for Gastrointestinal Research & Center for Epigenetics, Cancer Prevention and Cancer Genomics, Baylor Scott & White Research Institute and Charles A Sammons Cancer Center, Baylor University Medical Center, Dallas, TX USA
| | - Masato Kusunoki
- Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, Tsu, Mie, Japan
| |
Collapse
|
11
|
Pseudolaric acid B induces endometrial cancer Ishikawa cell apoptosis and inhibits metastasis through AKT-GSK-3β and ERK1/2 signaling pathways. Anticancer Drugs 2017; 28:603-612. [PMID: 28422767 DOI: 10.1097/cad.0000000000000500] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Pseudolaric acid B (PAB) is the most active constituent extracted from the bark of Pseudolarix kaempferi, which has been used as an antifungal remedy in traditional Chinese medicine. It is reported to have cytotoxicity to many tumor cell lines. In this study, we investigated the effects of PAB against human endometrial cancer Ishikawa cells. We found that PAB inhibited Ishikawa cell proliferation, and induced cell apoptosis and G2/M phase arrest through a mechanism involving AKT-GSK-3β and ERK1/2 signaling pathways. PAB also suppressed the Ishikawa cell adhesion, invasion, migration, and colony formation ability by increasing the expression of E-cadherin, Ezrin, and Kiss-1, and decreasing the expression of matrix metalloproteinase-9 and vascular endothelial growth factor. Taken together, these data indicated that PAB can be expected to be a novel treatment agent for endometrial cancer therapy.
Collapse
|
12
|
Fadiel A, Choi SD, Park B, Kim TH, Buldo-Licciardi J, Ahmadi M, Arslan A, Mittal K, Naftolin F. Expression of Ezrin and Estrogen Receptors During Cervical Carcinogenesis. Reprod Sci 2016; 24:706-712. [PMID: 27688241 DOI: 10.1177/1933719116667222] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
RATIONALE Development of cervical squamous carcinoma (CXCA) is accompanied by changes in estrogen receptors (ERs, ERα and ERβ) and ezrin expression; however, reports have been conflicting. Using histologically documented staging of cervical biopsies, we determined ezrin and ER relationships during CXCA development. METHODS Immunoreactive (ir) ezrin, ir-ERα, and ir-ERβ were studied in normal epithelium, carcinoma in situ/cervical intraepithelial neoplasia (CIN) 1 to 3, and local invasion or metastatic CXCA. Results were compared using H scoring. Cultures of Caski metastatic CXCA cells were treated with estradiol and/or tamoxifen and studied for ER-driven ir-ezrin and the morphologic response. RESULTS Koilocytosis was present and indicated viral presence. The ezrin H score increased from CIN1 to CIN3, reaching significant differences from normal by CIN3 ( P = .004) and 2× normal in metastatic CXCA. Estrogen receptor α and ERβ H scores fell, reaching significance by CIN3 (ERα, P = .0001; ERβ, P = .024). During estradiol treatment, ezrin in Caski cells increased and localized to the periphery, in ruffles and processes. The selective ER modulator tamoxifen blocked the estradiol-induced changes. CONCLUSIONS During cervical carcinogenesis, the usual relationship between estrogen and ezrin induction is abridged. This is consistent with the effects of human papilloma virus viral proteins such as E6 and E7 that upregulate SIX1, a protein that induces ezrin. Cervical carcinogenesis is progressive but arrests at the preinvasive stage for varying lengths of time. These studies suggest that changes in ezrin may be associated with the development of the invasive phenotype and penetration of the basement membrane. They also raise the possibility that inhibiting ezrin expression could be a target for the prevention of invasive CXCA.
Collapse
Affiliation(s)
- Ahmed Fadiel
- 1 Department of Obstetrics and Gynecology, New York University Langone Medical Center, New York, NY, USA
| | - Seung Do Choi
- 1 Department of Obstetrics and Gynecology, New York University Langone Medical Center, New York, NY, USA.,2 Department of Obstetrics and Gynecology, Soonchunhyang University College of Medicine, Cheonan, Republic of Korea
| | - Bora Park
- 3 Department of Obstetrics and Gynecology, Soonchunhyang University College of Medicine, Seoul, Republic of Korea
| | - Tae-Hee Kim
- 4 Department of Obstetrics and Gynecology, Soonchunhyang University College of Medicine, Bucheon, Republic of Korea
| | - Julia Buldo-Licciardi
- 1 Department of Obstetrics and Gynecology, New York University Langone Medical Center, New York, NY, USA
| | - Mitra Ahmadi
- 1 Department of Obstetrics and Gynecology, New York University Langone Medical Center, New York, NY, USA
| | - Alan Arslan
- 1 Department of Obstetrics and Gynecology, New York University Langone Medical Center, New York, NY, USA
| | - Khushbakhat Mittal
- 1 Department of Obstetrics and Gynecology, New York University Langone Medical Center, New York, NY, USA
| | - Frederick Naftolin
- 1 Department of Obstetrics and Gynecology, New York University Langone Medical Center, New York, NY, USA
| |
Collapse
|
13
|
Ezrin Is Associated with Disease Progression in Ovarian Carcinoma. PLoS One 2016; 11:e0162502. [PMID: 27622508 PMCID: PMC5021292 DOI: 10.1371/journal.pone.0162502] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Accepted: 08/23/2016] [Indexed: 12/24/2022] Open
Abstract
Objective Ezrin and p130Cas are structural proteins with an important role in signaling pathways and have been shown to promote cancer dissemination. We previously reported on overexpression of both ezrin and p130Cas in breast carcinoma effusions compared to primary carcinomas. Since ovarian and breast carcinomas share the ability to disseminate by forming malignant effusions, we sought to study the role of these molecules in ovarian carcinoma (OC). Methods OC cell lines were cultured in two different 3-dimensional conditions, on alginate scaffolds and as spheroids, which served as models for solid tumor and malignant effusions, respectively. shRNA was used to reduce protein expression in the cells. The malignant potential was evaluated by chemo-invasion assay, branching capacity on Matrigel and rate of proliferation. Subsequently, clinical specimens of high-grade serous carcinoma effusions, ovarian tumors and solid metastases were analyzed for ezrin and p130Cas expression. Results Higher ezrin expression was found in cells composing the spheroids compared to their counterparts cultured on alginate scaffold and in clinical samples of malignant effusions compared to solid tumors. In addition, reduced Ezrin expression impaired the invasion ability and the branching capacity of OC cells to a greater extent than reduced p130Cas expression. However, ezrin and p130Cas expression in effusions was unrelated to clinical outcome. Conclusions The 3-dimensional cell cultures were found to mimic the different tumor sites and be applicable as a model. The in vitro results concur with the clinical specimen analysis, suggesting that in OC, the role of ezrin in disease progression is more pronounced than that of p130Cas.
Collapse
|
14
|
Predictive Markers for the Recurrence of Nonmuscle Invasive Bladder Cancer Treated with Intravesical Therapy. DISEASE MARKERS 2015; 2015:857416. [PMID: 26681820 PMCID: PMC4670878 DOI: 10.1155/2015/857416] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Accepted: 11/10/2015] [Indexed: 12/24/2022]
Abstract
High recurrence rate is one representative characteristic of bladder cancer. Intravesical therapy after transurethral resection is often performed in patients with nonmuscle invasive bladder cancer (NMIBC) to prevent recurrence. Bacillus Calmette-Guérin (BCG) and several anticancer/antibiotic agents, such as mitomycin C and epirubicin, are commonly used for this therapy. BCG treatment demonstrates strong anticancer effects. However, it is also characterized by a high frequency of adverse events. On the other hand, although intravesical therapies using other anticancer and antibiotic agents are relatively safe, their anticancer effects are lower than those obtained using BCG. Thus, the appropriate selection of agents for intravesical therapy is important to improve treatment outcomes and maintain the quality of life of patients with NMIBC. In this review, we discuss the predictive value of various histological and molecular markers for recurrence after intravesical therapy in patients with NMIBC.
Collapse
|
15
|
Expression of ezrin in oral squamous cell carcinoma: Prognostic impact and clinicopathological correlations. J Craniomaxillofac Surg 2015; 43:1899-905. [DOI: 10.1016/j.jcms.2015.08.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2015] [Revised: 08/09/2015] [Accepted: 08/13/2015] [Indexed: 11/20/2022] Open
|
16
|
Matysiak ZE, Ochędalski T, Piastowska-Ciesielska AW. The evaluation of involvement of angiotensin II, its receptors, and androgen receptor in endometrial cancer. Gynecol Endocrinol 2015; 31:1-6. [PMID: 25231075 DOI: 10.3109/09513590.2014.958991] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Endometrial cancer (EC) is the most common gynecological malignancy. Alterations of angiogenic factors including angiotensin (AngII) or VEGF are observed in EC. Expression of angiotensin receptor 1 (AT1) is correlated with EC. Moreover, the expression of VEGF is up-regulated by AngII. Androgens are involved in the pathogenesis of EC. Genetic variations in androgen receptor (AR) gene may increase EC risk. This review proved strong correlation among EC, AngII, its receptors and AR, where AT influence on AR and, as a result, induce the expression of genes related to carcinogenesis.
Collapse
|
17
|
CHEN MIAOJUAN, GAO XUEJUAN, XU LINA, LIU TENGFEI, LIU XIAOHUI, LIU LANGXIA. Ezrin is required for epithelial-mesenchymal transition induced by TGF-β1 in A549 cells. Int J Oncol 2014; 45:1515-22. [PMID: 25051016 DOI: 10.3892/ijo.2014.2554] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Accepted: 07/02/2014] [Indexed: 11/05/2022] Open
|
18
|
Andersson G, Wennersten C, Gaber A, Boman K, Nodin B, Uhlén M, Segersten U, Malmström PU, Jirström K. Reduced expression of ezrin in urothelial bladder cancer signifies more advanced tumours and an impaired survival: validatory study of two independent patient cohorts. BMC Urol 2014; 14:36. [PMID: 24885195 PMCID: PMC4049499 DOI: 10.1186/1471-2490-14-36] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Accepted: 05/09/2014] [Indexed: 11/11/2022] Open
Abstract
Background Reduced membranous expression of the cytoskeleton-associated protein ezrin has previously been demonstrated to correlate with tumour progression and poor prognosis in patients with T1G3 urothelial cell carcinoma of the bladder treated with non-maintenance Bacillus Calmette-Guérin (n = 92), and the associations with adverse clinicopathological factors have been validated in another, unselected, cohort (n = 104). In the present study, we examined the prognostic significance of ezrin expression in urothelial bladder cancer in a total number of 442 tumours from two independent patient cohorts. Methods Immunohistochemical expression of ezrin was evaluated in tissue microarrays with tumours from one retrospective cohort of bladder cancer (n = 110; cohort I) and one population-based cohort (n = 342; cohort II). Classification regression tree analysis was applied for selection of prognostic cutoff. Kaplan-Meier analysis, log rank test and Cox regression proportional hazards’ modeling were used to evaluate the impact of ezrin on 5-year overall survival (OS), disease-specific survival (DSS) and progression-free survival (PFS). Results Ezrin expression could be evaluated in tumours from 100 and 342 cases, respectively. In both cohorts, reduced membranous ezrin expression was significantly associated with more advanced T-stage (p < 0.001), high grade tumours (p < 0.001), female sex (p = 0.040 and p = 0.013), and membranous expression of podocalyxin-like protein (p < 0.001 and p = 0.009). Moreover, reduced ezrin expression was associated with a significantly reduced 5-year OS in both cohorts (HR = 3.09 95% CI 1.71-5.58 and HR = 2.15(1.51-3.06), and with DSS in cohort II (HR = 2.77, 95% CI 1.78-4.31). This association also remained significant in adjusted analysis in Cohort I (HR1.99, 95% CI 1.05-3.77) but not in Cohort II. In pTa and pT1 tumours in cohort II, there was no significant association between ezrin expression and time to progression. Conclusions The results from this study validate previous findings of reduced membranous ezrin expression in urothelial bladder cancer being associated with unfavourable clinicopathological characteristics and an impaired survival. The utility of ezrin as a prognostic biomarker in transurethral resection specimens merits further investigation.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | - Karin Jirström
- Department of Clinical Sciences, Oncology and Pathology, Lund University, Skåne University Hospital, Lund 221 85, Sweden.
| |
Collapse
|
19
|
Zhou J, Feng Y, Tao K, Su Z, Yu X, Zheng J, Zhang L, Yang D. The expression and phosphorylation of ezrin and merlin in human pancreatic cancer. Int J Oncol 2014; 44:2059-67. [PMID: 24728215 DOI: 10.3892/ijo.2014.2381] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Accepted: 03/21/2014] [Indexed: 11/06/2022] Open
Abstract
Pancreatic carcinoma is the most common pancreatic malignancy and is associated with a very poor prognosis. Therefore, new prognostic factors and new treatment strategies are clearly needed. In this study, we retrospectively studied the levels of phosphorylated ezrin in 19 patients with pancreatic carcinoma by immunohistochemical analysis and determined the correlation between protein expression, clinicopathological characteristics and prognosis in pancreatic adenocarcinoma. We also characterized the phenotype of the overexpression of wild-type and phosphorylated ezrin and merlin in human pancreatic cancer cell lines. A significant correlation between the levels of phosphorylated ezrin 353 and ezrin 567 and the stage of pancreatic cancer was observed. Moreover, Kaplan-Meier analysis revealed that patients with high levels of phosphorylated ezrin had a significantly poorer survival rate (P<0.05). In addition, the overexpression of wild-type merlin or ezrin inhibited cell proliferation, migration and adhesion. However, the overexpression of T567D ezrin, a mutant that mimics permanent phosphorylation, promoted the proliferation, adhesion and migration of the pancreatic adenocarcinoma cell line SW1990. The overexpression of S518D merlin inhibited the growth of SW1990 and did not affect migration or adhesion. These results suggest that the phosphorylation of ezrin may contribute to the progression of pancreatic carcinoma and that the level of phosphorylated ezrin may serve as an adverse prognostic factor for pancreatic carcinoma.
Collapse
Affiliation(s)
- Jiahua Zhou
- Department of General Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, P.R. China
| | - Yongjiang Feng
- Department of General Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, P.R. China
| | - Ketao Tao
- Department of General Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, P.R. China
| | - Zhanhai Su
- Basic Medical Research Center, Qinghai University, Xining 810001, P.R. China
| | - Xiaojin Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Southeast University, Nanjing 210009, P.R. China
| | - Jie Zheng
- Department of Pathology, School of Medicine, Southeast University, Nanjing 210009, P.R. China
| | - Lihua Zhang
- Department of Surgical Pathology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, P.R. China
| | - Detong Yang
- Department of General Surgery, Zhongda Hospital, School of Medicine, Southeast University, Nanjing 210009, P.R. China
| |
Collapse
|
20
|
Kong J, Li Y, Liu S, Jin H, Shang Y, Quan C, Li Y, Lin Z. High expression of ezrin predicts poor prognosis in uterine cervical cancer. BMC Cancer 2013; 13:520. [PMID: 24182314 PMCID: PMC4228363 DOI: 10.1186/1471-2407-13-520] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 10/23/2013] [Indexed: 01/14/2023] Open
Abstract
Background Ezrin, a member of the ezrin/radixin/moesin (ERM) protein family, plays a pivotal role in tumor invasion and metastasis. This study is aimed to investigate the clinicopathological significance of upregulated ezrin protein expression in uterine cervical cancers. Methods Immunohistochemical staining of ezrin protein was performed on uterine cervical cancer specimens from 235 patients. For comparison, 239 cases of cervical intraepithelial neoplasia (CIN), 17 cases of cervical glandular intraepithelial neoplasia (CGIN) and 52 normal cervix samples were also included. qRT-PCR was performed on fresh tissues to detect ezrin mRNA expression levels. HPV infection statuses were genotyped by oligonucleotide microarray, and 10-year survival rates were calculated using the Kaplan-Meier method for 109 cervical cancer patients. Results Apical membranous distribution of ezrin protein was only observed in normal cervical glands, while perinuclear staining was only observed in cervical cancers. Strong cytoplasmic and diffuse localization of ezrin were frequently seen in the cervical cancers compared with the normal counterparts. Furthermore, this strongly positive ezrin expression was significantly higher in cervical cancers than in CIN, CGIN, and normal cervical epithelia. Ezrin overexpression was closely related with poor differentiation, late stage, and lymph node metastasis. Additionally, ezrin overexpression was associated with lower 10-year survival rate for patients with early stage cervical cancer, but not for patients with advanced stage. Conclusions Aberrant localization and overexpression of ezrin might be an independent effective biomarker for prognostic evaluation of cervical cancers.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Yulin Li
- Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules (Yanbian University), Ministry of Education, Yanji, China.
| | | |
Collapse
|
21
|
Increase in ezrin expression from benign to malignant breast tumours. Cell Oncol (Dordr) 2013; 36:485-91. [DOI: 10.1007/s13402-013-0153-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/18/2013] [Indexed: 10/26/2022] Open
|
22
|
Karabudak AA, Hafner J, Shetty V, Chen S, Secord AA, Morse MA, Philip R. Autoantibody biomarkers identified by proteomics methods distinguish ovarian cancer from non-ovarian cancer with various CA-125 levels. J Cancer Res Clin Oncol 2013; 139:1757-70. [PMID: 23999876 DOI: 10.1007/s00432-013-1501-6] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Accepted: 08/21/2013] [Indexed: 02/06/2023]
Abstract
PURPOSE CA-125 has been a valuable marker for detecting ovarian cancer, however, it is not sensitive enough to detect early-stage disease and not specific to ovarian cancer. The purpose of our study was to identify autoantibody markers that are specific to ovarian cancer regardless of CA-125 levels. METHODS Top-down and iTRAQ quantitative proteomics methods were used to identify high-frequency autoantibodies in ovarian cancer. Protein microarrays comprising the recombinant autoantigens were screened using serum samples from various stages of ovarian cancer with diverse levels of CA-125 as well as benign and healthy controls. ROC curve and dot blot analyses were performed to validate the sensitivity and specificity of the autoantibody markers. RESULTS The proteomics methodologies identified more than 60 potential high-frequency autoantibodies in ovarian cancer. Individual serum samples from ovarian cancer stages I-IV compared to control samples that were screened on a microarray containing native recombinant autoantigens revealed a panel of stage I high-frequency autoantibodies. Preliminary ROC curve and dot blot analyses performed with the ovarian cancer samples showed higher specificity and sensitivity as compared to CA-125. Three autoantibody markers exhibited higher specificity in various stages of ovarian cancer with low and normal CA-125 levels. CONCLUSIONS Proteomics technologies are suitable for the identification of protein biomarkers and also the identification of autoantibody biomarkers when combined with protein microarray screening. Using native recombinant autoantigen arrays to screen autoantibody markers, it is possible to identify markers with higher sensitivity and specificity than CA-125 that are relevant to early detection of ovarian cancer.
Collapse
|
23
|
Risinger JI, Allard J, Chandran U, Day R, Chandramouli GVR, Miller C, Zahn C, Oliver J, Litzi T, Marcus C, Dubil E, Byrd K, Cassablanca Y, Becich M, Berchuck A, Darcy KM, Hamilton CA, Conrads TP, Maxwell GL. Gene expression analysis of early stage endometrial cancers reveals unique transcripts associated with grade and histology but not depth of invasion. Front Oncol 2013; 3:139. [PMID: 23785665 PMCID: PMC3683664 DOI: 10.3389/fonc.2013.00139] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 05/14/2013] [Indexed: 12/17/2022] Open
Abstract
Endometrial cancer is the most common gynecologic malignancy in the United States but it remains poorly understood at the molecular level. This investigation was conducted to specifically assess whether gene expression changes underlie the clinical and pathologic factors traditionally used for determining treatment regimens in women with stage I endometrial cancer. These include the effect of tumor grade, depth of myometrial invasion and histotype. We utilized oligonucleotide microarrays to assess the transcript expression profile in epithelial glandular cells laser microdissected from 79 endometrioid and 12 serous stage I endometrial cancers with a heterogeneous distribution of grade and depth of myometrial invasion, along with 12 normal post-menopausal endometrial samples. Unsupervised multidimensional scaling analyses revealed that serous and endometrioid stage I cancers have similar transcript expression patterns when compared to normal controls where 900 transcripts were identified to be differentially expressed by at least fourfold (univariate t-test, p < 0.001) between the cancers and normal endometrium. This analysis also identified transcript expression differences between serous and endometrioid cancers and tumor grade, but no apparent differences were identified as a function of depth of myometrial invasion. Four genes were validated by quantitative PCR on an independent set of cancer and normal endometrium samples. These findings indicate that unique gene expression profiles are associated with histologic type and grade, but not myometrial invasion among early stage endometrial cancers. These data provide a comprehensive perspective on the molecular alterations associated with stage I endometrial cancer, particularly those subtypes that have the worst prognosis.
Collapse
Affiliation(s)
- John I Risinger
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University , Grand Rapids, MI , USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
24
|
Zhong ZQ, Song MM, He Y, Cheng S, Yuan HS. Knockdown of Ezrin by RNA interference reverses malignant behavior of human pancreatic cancer cells in vitro. Asian Pac J Cancer Prev 2013; 13:3781-9. [PMID: 23098471 DOI: 10.7314/apjcp.2012.13.8.3781] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Pancreatic cancer is one of the most aggressive tumors with a dismal prognosis. The membrane cytoskeletal crosslinker Ezrin participates in several functions including cell proliferation, adhesion, motility and survival. There is increasing evidence that Ezrin is overexpressed in vast majority of malignant tumors and regulates tumor progression. However, its roles in pancreatic cancer remain elusive. METHODS Three pairs of specific Ezrin siRNAs were designed and synthetized and screened to determine the most efficient one for construction of a hairpin RNA plasmid targeting Ezrin. After transfection into the Panc-1 pancreatic cancer cell line, real-time quantitative PCR and Western blotting were performed to examine the expression of mRNA and protein. The MTT method was applied to examine the proliferation and the drug sensibility to Gemcitabine. Flow cytometry was used to assess the cycle and apoptosis, while capacity for invasion was determined with transwell chambers. Furthermore, we detected phosphorylated-Erk1/2 protein and phosphorylated-Akt protein by Western blotting. RESULTS Real-time quantitative PCR and Western blotting revealed that Ezrin expression was notably down-regulated at both mRNA and protein levels by RNA interference (P< 0.01). Proliferation was inhibited and drug resistance to gemcitabine was improved (P< 0.05). Flow cytometry showed that the proportion of cells in the G1/G0 phase increased (P< 0.01), and in G2/M and S phases decreased (P< 0.05), with no apparent differences in apoptosis (P> 0.05). The capacity for invasion was markedly reduced (P< 0.01). In addition, down-regulating Ezrin expression had no effect on phosphorylated-Akt protein (P>0.05), but could decrease the level of phosphorylated-Erk1/2 protein (P< 0.05). CONCLUSIONS RNA interference of Ezrin could inhibit its expression in the pancreatic cancer cells line Panc-1, leading to a potent suppression of malignant behavior in vitro. Assessment of potential as a target for pancreatic cancer treatment is clearly warranted.
Collapse
Affiliation(s)
- Zhi-Qiang Zhong
- Department of General Surgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | | | | | | | | |
Collapse
|
25
|
Chen QY, Xu W, Jiao DM, Wu LJ, Song J, Yan J, Shi JG. Silence of ezrin modifies migration and actin cytoskeleton rearrangements and enhances chemosensitivity of lung cancer cells in vitro. Mol Cell Biochem 2013; 377:207-18. [PMID: 23435957 DOI: 10.1007/s11010-013-1586-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 02/08/2013] [Indexed: 01/27/2023]
Abstract
Ezrin, primarily acts as a linker between the plasma membrane and the cytoskeleton, is involved in many cellular functions, including regulation of actin cytoskeleton, control of cell shape, adhesion, motility, and modulation of signaling pathways. Although ezrin is now recognized as a key component in tumor metastasis, its roles and the underlying mechanisms remain unclear. In the present study, we chose highly metastatic human lung carcinoma 95D cells, which highly express the ezrin proteins, as a model to examine the functional roles of ezrin in tumor suppression. An ezrin-silenced 95D cell line was established using lentivirus-mediated short hairpin RNA method. CCK-8 assay and soft agar assay analysis showed that downregulation of ezrin significantly suppressed the tumorigenicity and proliferation of 95D cells in vitro. cell migration and invasion studies showed that ezrin-specific deficiency in the cells caused the substantial reduction of the cell migration and invasion. In parallel, it also induced rearrangements of the actin cytoskeleton. Flow cytometry assay showed that changes in the ezrin protein level significantly affected the cell cycle distribution and eventual apoptosis. Furthermore, further studies showed that ezrin regulated the expression level of E-cadherin and CD44, which are key molecules involved in cell growth, migration, and invasion. Meanwhile, the suppression of ezrin expression also sensitized cells to antitumor drugs. Altogether, our results demonstrated that ezrin played an important role in the tumorigenicity and metastasis of lung cancer cells, which will benefit the development of therapeutic strategy for lung cancer.
Collapse
Affiliation(s)
- Qing-Yong Chen
- Department of Respiratory Disease, The 117th Hospital of PLA, Hang Zhou, People's Republic of China.
| | | | | | | | | | | | | |
Collapse
|
26
|
Mechanisms underlying cancer progression caused by ezrin overexpression in tongue squamous cell carcinoma. PLoS One 2013; 8:e54881. [PMID: 23357878 PMCID: PMC3554659 DOI: 10.1371/journal.pone.0054881] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 12/17/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Ezrin is a member of the ezrin, radixin, and moesin family that provides a functional link between the plasma membrane and the cortical actin cytoskeleton. A correlation between ezrin overexpression and aggressive cancer behavior has been recently reported in various tumor types. However, its roles in the mechanisms underlying progression of tongue squamous cell carcinoma (SCC) are unclear. METHOD We used human tongue SCC and noncancerous tissue microarrays to immunohistochemically analyze the ezrin expression level and its relationship with proliferative activity. The human tongue SCC cell line HSC-3 was used to determine the effects of ezrin RNA interference (RNAi) on cancer cells during MTT; wound healing and invasion assays; immunofluorescence of the actin cytoskeleton; and western blotting of E-cadherin, N-cadherin, β-catenin, and the active and total RhoA/Rac1/cdc42. RESULTS Ezrin was overexpressed in 46.4% of the tumors examined in human tongue SCC tissue microarrays. Ezrin expression was correlated with the Ki-67 index. Ezrin depletion by RNAi in the HSC-3 cells significantly reduced cell proliferation, migration, and invasiveness and disturbed actin reorganization during podia formation. Its effects on RhoA/Rac1/cdc42 expression were not significant, whereas it enhanced E-cadherin and β-catenin expression and decreased N-cadherin expression. CONCLUSIONS Ezrin is often overexpressed in primary tongue SCCs and may have an important role in their growth, migration, and invasiveness possibly via its relationship with the E-cadherin/β-catenin complex and the cadherin switch. Thus, ezrin could be a therapeutic target in tongue SCC.
Collapse
|
27
|
The ezrin metastatic phenotype is associated with the initiation of protein translation. Neoplasia 2012; 14:297-310. [PMID: 22577345 DOI: 10.1593/neo.11518] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2011] [Revised: 03/13/2012] [Accepted: 03/16/2012] [Indexed: 12/14/2022] Open
Abstract
We previously associated the cytoskeleton linker protein, Ezrin, with the metastatic phenotype of pediatric sarcomas, including osteosarcoma and rhabdomyosarcoma. These studies have suggested that Ezrin contributes to the survival of cancer cells after their arrival at secondary metastatic locations. To better understand this role in metastasis, we undertook two noncandidate analyses of Ezrin function including a microarray subtraction of high-and low-Ezrin-expressing cells and a proteomic approach to identify proteins that bound the N-terminus of Ezrin in tumor lysates. Functional analyses of these data led to a novel and unifying hypothesis that Ezrin contributes to the efficiency of metastasis through regulation of protein translation. In support of this hypothesis, we found Ezrin to be part of the ribonucleoprotein complex to facilitate the expression of complex messenger RNA in cells and to bind with poly A binding protein 1 (PABP1; PABPC1). The relevance of these findings was supported by our identification of Ezrin and components of the translational machinery in pseudopodia of highly metastatic cells during the process of cell invasion. Finally, two small molecule inhibitors recently shown to inhibit the Ezrin metastatic phenotype disrupted the Ezrin/PABP1 association. Taken together, these results provide a novel mechanistic basis by which Ezrin may contribute to metastasis.
Collapse
|
28
|
Ji Z, Shi X, Liu X, Shi Y, Zhou Q, Liu X, Li L, Ji X, Gao Y, Qi Y, Kang Q. The membrane-cytoskeletal protein 4.1N is involved in the process of cell adhesion, migration and invasion of breast cancer cells. Exp Ther Med 2012; 4:736-740. [PMID: 23170136 PMCID: PMC3501401 DOI: 10.3892/etm.2012.653] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Accepted: 07/11/2012] [Indexed: 11/06/2022] Open
Abstract
Protein 4.1N belongs to the protein 4.1 superfamily that links transmembrane proteins to the actin cytoskeleton. Recent evidence has shown that protein 4.1 is important in tumor suppression. However, the functions of 4.1N in the metastasis of breast cancer are largely unknown. In the present study, MCF-7, T-47D and MDA-MB-231 breast cancer cell lines with various metastatic abilities were employed. Protein 4.1N was found to be expressed in poorly metastatic MCF-7 and middle metastatic T-47D cell lines, and was predominantly associated with cell-cell junctions. However, no 4.1N expression was detected in the highly metastatic MDA-MB-231 cells. Moreover, re-expression of 4.1N in MDA-MB-231 cells inhibited cell adhesion, migration and invasion. The results suggest that protein 4.1N is a negative regulator of cell metastasis in breast cancer.
Collapse
Affiliation(s)
- Zhenyu Ji
- Department of Bioengineering, Zhengzhou University, Zhengzhou 450001; ; Henan Academy of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
29
|
Li Q, Gao H, Xu H, Wang X, Pan Y, Hao F, Qiu X, Stoecker M, Wang E, Wang E. Expression of ezrin correlates with malignant phenotype of lung cancer, and in vitro knockdown of ezrin reverses the aggressive biological behavior of lung cancer cells. Tumour Biol 2012; 33:1493-504. [PMID: 22528947 DOI: 10.1007/s13277-012-0400-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Accepted: 04/03/2012] [Indexed: 02/02/2023] Open
Abstract
Ezrin, one of the ezrin-radixin-moesin proteins, is involved in the formation of cell membrane processes such as lamellipodia and filopodia and acts as a membrane-cytoskeleton linker. Its aberrant expression correlates with development and progression of several human cancers. However, the expression of ezrin and its role in lung cancer are currently unknown. In this study, we performed ezrin small interfering RNA transfection in two lung cancer cell lines and examined the effects on malignant phenotypes in cancer cells by using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, wound healing, and chamber transwell assays. Ezrin knockdown significantly reduced the proliferation, migration, and invasion of lung cancer cells in vitro. To address the possible mechanisms, we evaluated the expression of adhesion molecules E-cadherin and β-catenin by Western blot and reverse transcriptase-polymerase chain reaction analyses. The results demonstrated that downregulation of ezrin reduced β-catenin and increased E-cadherin at the protein level but had no effects on their mRNA levels, suggesting posttranscriptional regulation of these two adhesion molecules. Immunofluorescence assays revealed that ezrin knockdown restored membranous expression of E-cadherin and decreased cytoplasmic β-catenin in lung cancer cells. In addition, ezrin expression was immunohistochemically evaluated on 135 normal and 183 lung cancer tissues. The expression of ezrin was significantly higher in cancer samples than paired autologous normal lung tissues. In normal bronchial epithelium, ezrin was mainly localized on the apical membrane, while in lung cancers and metastatic foci, ezrin was primarily distributed in cytoplasm. Among lung cancer tissues, expression of ezrin was higher in the invasive front of primary lesions and the highest in lymphatic metastasis. Statistical analysis demonstrated that ezrin expression correlated significantly with lymphatic metastasis and advanced TNM stage. Our data suggest that ezrin may play a crucial role in governing the biological behavior of lung cancer.
Collapse
Affiliation(s)
- Qingchang Li
- Department of Pathology, The First Affiliated Hospital and College of Basic Medical Sciences, China Medical University, Shenyang, 110001, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Fadiel A, Chen Z, Ulukus E, Ohtani K, Hatami M, Naftolin F. Ezrin Overexpression by Transformed Human Ovarian Surface Epithelial Cells, Ovarian Cleft Cells, and Serous Ovarian Adenocarcinoma Cells. Reprod Sci 2012; 19:797-805. [DOI: 10.1177/1933719111433884] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Ahmed Fadiel
- Department of Obstetrics and Gynecology, New York University, New York City, NY, USA
- Departments of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, CT, USA
| | - Zhaocong Chen
- Departments of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, CT, USA
- Current Address: Department of Molecular Biology, Tongji University Medical School, Wuhan, China
| | - Emine Ulukus
- Pathology, Yale University School of Medicine, New Haven, CT, USA
- Current Address: Department of Pathology, Eylul University, School of Medicine, Inciralti, Izmir, 35340, Turkey
| | - Kaori Ohtani
- Departments of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, CT, USA
- Current Address: Department of Obstetrics and Gynecology, Nihon University School of Medicine, Oyaguchi-kamimachi, Itabashi, Tokyo, Japan
| | - Mehrangiz Hatami
- Department of Obstetrics and Gynecology, New York University, New York City, NY, USA
| | - Frederick Naftolin
- Department of Obstetrics and Gynecology, New York University, New York City, NY, USA
- Departments of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, CT, USA
| |
Collapse
|
31
|
Arslan AA, Silvera D, Arju R, Giashuddin S, Belitskaya-Levy I, Formenti SC, Schneider RJ. Atypical ezrin localization as a marker of locally advanced breast cancer. Breast Cancer Res Treat 2012; 134:981-8. [PMID: 22415480 DOI: 10.1007/s10549-012-2017-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Accepted: 03/02/2012] [Indexed: 11/24/2022]
Abstract
Locally advanced breast cancer (LABC) was initially characterized as a large primary tumor (≥5 cm), associated with or without skin or chest-wall involvement, fixed axillary lymph nodes, or disease spread to the ipsilateral internal mammary or supraclavicular nodes. Since 2002, LABC has been reclassified to include smaller stage IIB tumors (2 to <5 cm) with lymph node involvement, or stages IIIA-IIIB (≥5 cm) with or without nodal involvement. Despite the rather common presentation of LABC, it remains a poorly understood and highly variable clinical presentation of breast cancer that is a challenge to treatment. Here, we characterized a panel of breast tumors of known stage, grade, and key clinical-pathological parameters for the expression of the protein ezrin, which is involved in promoting signaling of the PI3K-Akt-mTOR pathway in response to extracellular and tumor micro-environmental signals, and is involved in breast cancer invasion and metastasis. We show that ezrin, which resides primarily in the apical membrane in normal breast epithelium, relocalizes primarily to the cytoplasm in >80 % of traditional (T3) invasive ductal LABC tumors (≥5 cm). Cytoplasmic ezrin is very strongly associated with a single characteristic in breast cancer-large tumor size. In contrast, in large non-malignant fibroadenomas, ezrin staining was similar to that of normal breast epithelium. Small (T1, 1 cm) invasive ductal carcinomas displayed largely apical membrane and perinuclear ezrin localization with weak cytoplasmic staining. Cytoplasmic ezrin localization was also associated with positive lymph node status, but no other clinical-pathological features, including hormone receptor status, histological or nuclear grade of tumor cell. The cytoplasmic relocalization of ezrin may therefore represent a novel marker for large malignant tumor size, reflecting the unique biology of LABC.
Collapse
Affiliation(s)
- Alan A Arslan
- Department of Obstetrics and Gynecology, New York University School of Medicine, New York, NY 10016, USA
| | | | | | | | | | | | | |
Collapse
|
32
|
Mhawech-Fauceglia P, Wang D, Lele S, Frederick PJ, Pejovic T, Liu S. Claudin7 and moesin in endometrial Adenocarcinoma; a retrospective study of 265 patients. BMC Res Notes 2012; 5:65. [PMID: 22272721 PMCID: PMC3280166 DOI: 10.1186/1756-0500-5-65] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 01/24/2012] [Indexed: 01/06/2023] Open
Abstract
Background Metastasis is the main cause of death in cancer and is a multistep process. Moesin (MSN), a member of the ezrin-rdixin-moesin family and Claudin7 (CLDN7), a tight junction protein, both play a role in tumor cell metastasis. Previously, we found an over-expression of MSN and under-expression of CLDN7 at the mRNA level in uterine serous carcinoma in comparison to uterine endometrioid adenocarcinoma. The purpose of this study is to determine the protein expression of MSN and CLDN7 in endometrial cancer (EC) and to evaluate their prognostic value. Two hundred sixty-five patients with EC were retrieved from the archives. MSN and CLDN7 immunostaining were performed on the tissue paraffin sections. The expression of each antibody was reported and then correlated with clinicopathological prognostic factors including age, tumor grade, tumor stage, lympho-vascular involvement, depth of myometrial invasion, overall survival (OS), disease free survival (DFS) and death of disease (DOD). Results MSN and CLDN were expressed in 46% and 52% of overall cases. We observed an association between MSN+ staining and tumor grade, and serous and clear cell carcinoma subtypes (p < 0.001 each). There was an association between CLDN7+ staining and low tumor grade and endometrioid adenocarcinoma subtype (p < 0.001 and 0.001 respectively). However, no association between MSN and CLDN7 expression and outcome including OS, DOD, and DFS was found. Conclusion A significant prognostic value of MSN and CLDN7 in predicting disease outcomes in patients with EC was not demonstrated. Nevertheless, the high percentage of EC cases with MSN and CLDN7 immunoexpression, and their association with tumor grade and subtypes, suggests that these proteins might play a role in tumorigenesis of endometrial adenocarcinomas. Future studies are needed to shed light on their mechanistic properties in EC cells.
Collapse
|
33
|
Xie JJ, Zhang FR, Tao LH, Lü Z, Xu XE, Jian-Shen, Xu LY, Li EM. Expression of ezrin in human embryonic, fetal, and normal adult tissues. J Histochem Cytochem 2011; 59:1001-8. [PMID: 21832146 DOI: 10.1369/0022155411418661] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Ezrin, which cross-links the cytoskeleton and plasma membrane, was involved in a wide variety of cellular processes. Here, to investigate the distribution of ezrin, tissue microarray technology was employed to perform immunohistochemical experiments on human embryos, fetuses at 4 to 22 weeks' gestation, and adult tissue specimens. Results showed that ezrin was widely expressed in the gastrointestinal tract throughout the human developmental stages studied. At 6 to 8 weeks' gestation, ezrin was found in epithelial cells, and this staining pattern was particularly pronounced in the brush border of mature absorptive cells lining the villus in later developmental stages and adult tissues. Throughout neural development, ezrin was only expressed in the neural tube at 4 weeks' gestation. Ezrin was also detected in the cortex and medulla of the adrenal gland at 8 to 12 weeks' gestation, whereas its immunoreactivity was increased from the zona glomerulosa through the zona reticularis and was essentially undetectable in the adrenal medulla of adult tissues. Significant expression of ezrin was seen throughout development in the kidney, spleen, lymph nodes, and cells of stratified squamous epithelia. However, ezrin was undetectable in lung, liver, heart, and blood vessels. These results demonstrated that the expression pattern of ezrin was highly time specific and tissue specific.
Collapse
Affiliation(s)
- Jian-Jun Xie
- Department of Biochemistry and Molecular Biology, Medical College of Shantou University, Shantou, Guangdong Province, P.R. China
| | | | | | | | | | | | | | | |
Collapse
|
34
|
Patara M, Santos EMM, Coudry RDA, Soares FA, Ferreira FO, Rossi BM. Ezrin expression as a prognostic marker in colorectal adenocarcinoma. Pathol Oncol Res 2011; 17:827-33. [PMID: 21465252 DOI: 10.1007/s12253-011-9389-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Accepted: 03/09/2011] [Indexed: 12/13/2022]
Abstract
Ezrin protein acts in the regulation of cytoskeletal and directly influences survival and tumor progression; there is an increase in its expression in metastatic cells and tissues in several types of cancer including colorectal cancer. 250 Patients with colorectal cancer submitted to surgery from 1995 to 2002. Protein expression was carried through by Tissue Micro Array immunohistochemical tests of paraffined neoplasic tissues and associated with clinical variables. Differentiation degree, lymph node invasion, metastasis at diagnosis, and palliative surgery were associated to a higher expression of the protein and survival. Higher expression of the Ezrin correlates with tumor aggressiveness and worse prognosis for colorectal cancer.
Collapse
Affiliation(s)
- Marcelo Patara
- CNPq-PIBIC, College of Medical Sciences Santa Casa de São Paulo, Rua Professor Antonio Prudente, 211, 01509-010, Sao Paulo, SP, Brazil.
| | | | | | | | | | | |
Collapse
|
35
|
Gene expression profiles in stage I uterine serous carcinoma in comparison to grade 3 and grade 1 stage I endometrioid adenocarcinoma. PLoS One 2011; 6:e18066. [PMID: 21448288 PMCID: PMC3063241 DOI: 10.1371/journal.pone.0018066] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Accepted: 02/19/2011] [Indexed: 01/21/2023] Open
Abstract
Background Endometrial cancer is the most common gynecologic malignancy in the developed countries. Clinical studies have shown that early stage uterine serous carcinoma (USC) has outcomes similar to early stage high grade endometrioid adenocarcinoma (EAC-G3) than to early stage low grade endometrioid adenocarcinoma (EAC-G1). However, little is known about the origin of these different clinical outcomes. This study applied the whole genome expression profiling to explore the expression difference of stage I USC (n = 11) relative to stage I EAC-G3 (n = 11) and stage I EAC-G1 (n = 11), respectively. Methodology/Principal Finding We found that the expression difference between USC and EAC-G3, as measured by the number of differentially expressed genes (DEGs), is consistently less than that found between USC and EAC-G1. Pathway enrichment analyses suggested that DEGs specific to USC vs. EAC-G3 are enriched for genes involved in signaling transduction, while DEGs specific to USC vs. EAC-G1 are enriched for genes involved in cell cycle. Gene expression differences for selected DEGs are confirmed by quantitative RT-PCR with a high validation rate. Conclusion This data, although preliminary, indicates that stage I USC is genetically similar to stage I EAC-G3 compared to stage I EAC-G1. DEGs identified from this study might provide an insight in to the potential mechanisms that influence the clinical outcome differences between endometrial cancer subtypes. They might also have potential prognostic and therapeutic impacts on patients diagnosed with uterine cancer.
Collapse
|
36
|
Nowak D, Mazur AJ, Popow-Woźniak A, Radwańska A, Mannherz HG, Malicka-Błaszkiewicz M. Subcellular distribution and expression of cofilin and ezrin in human colon adenocarcinoma cell lines with different metastatic potential. Eur J Histochem 2010; 54:e14. [PMID: 20558337 PMCID: PMC3167302 DOI: 10.4081/ejh.2010.e14] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2009] [Revised: 01/29/2010] [Accepted: 02/01/2010] [Indexed: 01/04/2023] Open
Abstract
The dynamic reorganization of the actin cytoskeleton is regulated by a number of actin binding proteins (ABPs). Four human colon adenocarcinoma cell lines - parental and three selected sublines, which differ in motility and metastatic potential, were used to investigate the expression level and subcellular localization of selected ABPs. Our interest was focused on cofilin and ezrin. These proteins are essential for cell migration and adhesion. The data received for the three more motile adenocarcinoma sublines (EB3, 3LNLN, 5W) were compared with those obtained for the parental LS180 adenocarcinoma cells and fibroblastic NRK cells. Quantitative densitometric analysis and confocal fluorescence microscopy were used to examine the expression levels and subcellular distribution of the selected ABPs. Our data show distinct increase in the level of cofilin in adenocarcinoma cells accompanied by the reduction of inactive phosphorylated form of cofilin. In more motile cells, cofilin was accumulated at cellular periphery in co-localization with actin filaments. Furthemore, we indicated translocation of ezrin towards the cell periphery within more motile cells in comparison with NRK and parental adenocarcinoma cells. In summary, our data indicate the correlation between migration ability of selected human colon adenocarcinoma sublines and subcellular distribution as well as the level of cofilin and ezrin. Therefore these proteins might be essential for the higher migratory activity of invasive tumor cells.
Collapse
Affiliation(s)
- D Nowak
- Dept. of Cell Pathology, Faculty of Biotechnology, University of Wroclaw, Poland.
| | | | | | | | | | | |
Collapse
|
37
|
Ling ZQ, Mukaisho KI, Yamamoto H, Chen KH, Asano S, Araki Y, Sugihara H, Mao WM, Hattori T. Initiation of malignancy by duodenal contents reflux and the role of ezrin in developing esophageal squamous cell carcinoma. Cancer Sci 2010; 101:624-30. [PMID: 20128822 PMCID: PMC11159458 DOI: 10.1111/j.1349-7006.2009.01470.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Gastroesophageal reflux has recently been implicated as a causative factor in upper aerodigestive tract carcinogenesis. Esophageal squamous cell carcinomas (ESCCs) have developed in duodenal-content reflux animals without any known carcinogen present. We established a cell line, designated ESCC-DR, from a thoracic metastatic tumor in a reflux animal. To gain insight into the genomic alterations associated with duodenal content reflux-induced carcinogenesis, we first performed comparative genomic hybridization using an Agilent rat 244K array in ESCC-DR and identified many chromosomal gains and losses. Of the many genes identified, we detected an interesting ezrin amplicon that has been recently reported in human ESCC. Ezrin, which cross-links the cytoskeleton and plasma membrane, is involved in the growth and metastatic potential of cancer cells. Overexpression of ezrin protein in ESCC-DR was confirmed by Western blotting. We also compared ezrin protein expression levels and patterns in hyperplastic, dysplastic, ESCC, and metastatic sites developed in two distinct reflux models using immunohistochemistry. Immunohistochemical staining of ezrin revealed overexpression in the nucleus, and the cytoplasm as well as plasma membrane of ESCC cells. Phosphorylated ERM (ezrin, radixin, moesin) was expressed at the leading edge, or invasive front, of larger metastatic sites. Taken together, duodenal reflux has a great potential for initiating malignancy, and thus likely plays a role in development of ESCC. Ezrin probably influences the growth and invasiveness of ESCC cells, and phosphorylation is only required in metastatic behavior of tumor cells at the leading edge and invasive front.
Collapse
Affiliation(s)
- Zhi-Qiang Ling
- Department of Pathology, Shiga University of Medical Science, Shiga, Japan
| | | | | | | | | | | | | | | | | |
Collapse
|
38
|
Wei YC, Li CF, Yu SC, Chou FF, Fang FM, Eng HL, Uen YH, Tian YF, Wu JM, Li SH, Huang WW, Li WM, Huang HY. Ezrin overexpression in gastrointestinal stromal tumors: an independent adverse prognosticator associated with the non-gastric location. Mod Pathol 2009; 22:1351-1360. [PMID: 19648886 DOI: 10.1038/modpathol.2009.107] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ezrin, a member of the ezrin-radixin-moesin family, acts as a link between the cell membrane and actin cytoskeleton to integrate cell adhesion-mediated signaling. It implicates tumor progression, metastatic dissemination, and adverse outcomes in several cancer types, including pediatric and adult sarcomas. Although ezrin upregulation was shown by cDNA expression profiling, no study has systematically evaluated the significance of ezrin expression in a large cohort of gastrointestinal stromal tumors (GISTs). Ezrin immunostaining was carried out on tissue microarrays of primary GISTs and assessable in 347 cases, 188 of which were successfully evaluated for mutation variants of KIT and PDGFRA receptor tyrosine kinase (RTK) genes by sequencing with or without screening by denatured high-performance liquid chromatography. These GISTs with known RTK genotypes were dichotomized into two prognostically different groups. The endogenous expression and phosphorylation of ezrin in GIST cell lines were analyzed by western blotting. By immunohistochemistry, ezrin overexpression was present in 66% of GISTs and significantly associated with the non-gastric location (P=0.002) and decreased disease-free survival (P=0.032, univariately). However, it was not related to the National Institute of Health (NIH) risk category, Ki-67 labeling index, RTK genotypes, and other variables. In multivariate analyses, ezrin overexpression remained independently predictive of adverse outcome (P=0.008, risk ratio=2.363), together with Ki-67 labeling index >5% (P<0.001, risk ratio=3.581), high-risk category (P<0.001, risk ratio=2.156), and the non-gastric location (P=0.029, risk ratio=1.899). Despite the variation in the ezrin expression level, phosphorylated ezrin at threonine(567) was only detectable in GIST882 and GIST48 cells, but not in colonic smooth muscle cells. In conclusion, ezrin is frequently overexpressed in GISTs, especially those arising from the non-gastric sites. Given that its impact is independent of the NIH risk category, cell proliferation, and tumor location, ezrin immunoreactivity represents a valuable prognostic adjunct of GISTs, suggesting a causative role in conferring an aggressive phenotype.
Collapse
Affiliation(s)
- Yu-Ching Wei
- Department of Pathology, Chang Gung Memorial Hospital-Kaohsiung Medical Center, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
39
|
Abiatari I, Esposito I, Oliveira TD, Felix K, Xin H, Penzel R, Giese T, Friess H, Kleeff J. Moesin-dependent cytoskeleton remodelling is associated with an anaplastic phenotype of pancreatic cancer. J Cell Mol Med 2009; 14:1166-79. [PMID: 19432821 PMCID: PMC3822753 DOI: 10.1111/j.1582-4934.2009.00772.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Cell motility is controlled by the dynamic cytoskeleton and its related proteins, such as members of the ezrin/radixin/moesin (ERM) family, which act as signalling molecules inducing cytoskeleton remodelling. Although ERM proteins have been identified as important factors in various malignancies, functional redundancy between these proteins has hindered the dissection of their individual contribution. The aim of the present study was to analyse the functional role of moesin in pancreatic malignancies. Cancer cells of different malignant lesions of human and transgenic mice pancreata were evaluated by immunohistochemistry. For functional analysis, cell growth, adhesion and invasion assays were carried out after transient and stable knock-down of moesin expression in pancreatic cancer cells. In vivo tumourigenicity was determined using orthotopic and metastatic mouse tumour models. We now show that moesin knock-down increases migration, invasion and metastasis and influences extracellular matrix organization of pancreatic cancer. Moesin-regulated migratory activities of pancreatic cancer cells were in part promoted through cellular translocation of β-catenin, and re-distribution and organization of the cytoskeleton. Analysis of human and different transgenic mouse pancreatic cancers demonstrated that moesin is a phenotypic marker for anaplastic carcinoma, suggesting that this ERM protein plays a specific role in pancreatic carcinogenesis.
Collapse
Affiliation(s)
- Ivane Abiatari
- Department of General Surgery, Technische Universität München, Ismaningerstrasse 22, 81675 Munich, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Ren L, Hong SH, Cassavaugh J, Osborne T, Chou AJ, Kim SY, Gorlick R, Hewitt SM, Khanna C. The actin-cytoskeleton linker protein ezrin is regulated during osteosarcoma metastasis by PKC. Oncogene 2009; 28:792-802. [PMID: 19060919 PMCID: PMC7213760 DOI: 10.1038/onc.2008.437] [Citation(s) in RCA: 107] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Revised: 10/03/2008] [Accepted: 11/01/2008] [Indexed: 11/08/2022]
Abstract
Ezrin is a member of the ERM (ezrin, radixin, moesin) protein family and links F-actin to the cell membrane following phosphorylation. Ezrin has been associated with tumor progression and metastasis in several cancers including the pediatric solid tumors, osteosarcoma and rhabdomyosarcoma. In this study, we were surprised to find that ezrin was not constitutively phosphorylated but rather was dynamically regulated during metastatic progression in osteosarcoma. Metastatic osteosarcoma cells expressed phosphorylated ERM early after their arrival in the lung, and then late in progression, only at the invasive front of larger metastatic lesions. To pursue mechanisms for this regulation, we found that inhibitors of PKC (protein kinase C) blocked phosphorylation of ezrin, and that ezrin coimmunoprecipitated in cells with PKCalpha, PKCiota and PKCgamma. Furthermore, phosphorylated forms of ezrin and PKC had identical expression patterns at the invasive front of pulmonary metastatic lesions in murine and human patient samples. Finally, we showed that the promigratory effects of PKC were linked to ezrin phosphorylation. These data are the first to suggest a dynamic regulation of ezrin phosphorylation during metastasis and to connect the PKC family members with this regulation.
Collapse
Affiliation(s)
- L Ren
- Tumor and Metastasis Biology Section, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - SH Hong
- Tumor and Metastasis Biology Section, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - J Cassavaugh
- Tumor and Metastasis Biology Section, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - T Osborne
- Tumor and Metastasis Biology Section, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - AJ Chou
- Department of Pediatrics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA
| | - SY Kim
- Tumor and Metastasis Biology Section, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - R Gorlick
- Department of Pediatrics, Albert Einstein College of Medicine, The Children’s Hospital at Montefiore, Bronx, NY, USA
| | - SM Hewitt
- Tissue Array Research Program, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - C Khanna
- Tumor and Metastasis Biology Section, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| |
Collapse
|
41
|
Cytoskeletal protein 4.1R negatively regulates T-cell activation by inhibiting the phosphorylation of LAT. Blood 2009; 113:6128-37. [PMID: 19190245 DOI: 10.1182/blood-2008-10-182329] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Protein 4.1R (4.1R) was first identified in red cells where it plays an important role in maintaining mechanical stability of red cell membrane. 4.1R has also been shown to be expressed in T cells, but its function has been unclear. In the present study, we use 4.1R-deficient mice to explore the role of 4.1R in T cells. We show that 4.1R is recruited to the immunologic synapse after T cell-antigen receptor (TCR) stimulation. We show further that CD4+ T cells of 4.1R-/- mice are hyperactivated and that they displayed hyperproliferation and increased production of interleukin-2 (IL-2) and interferon gamma (IFNgamma). The hyperactivation results from enhanced phosphorylation of LAT and its downstream signaling molecule ERK. The 4.1R exerts its effect by binding directly to LAT, and thereby inhibiting its phosphorylation by ZAP-70. Moreover, mice deficient in 4.1R display an elevated humoral response to immunization with T cell-dependent antigen. Thus, we have defined a hitherto unrecognized role for 4.1R in negatively regulating T-cell activation by modulating intracellular signal transduction.
Collapse
|
42
|
Osawa H, Smith CA, Ra YS, Kongkham P, Rutka JT. The role of the membrane cytoskeleton cross-linker ezrin in medulloblastoma cells. Neuro Oncol 2008; 11:381-93. [PMID: 19088174 DOI: 10.1215/15228517-2008-110] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Medulloblastoma is a highly malignant brain tumor that occurs predominantly in children. The molecular pathogenesis of medulloblastoma is under investigation. Previously, we used complementary DNA microarray analysis to compare patterns of gene expression in medulloblastoma samples versus normal cerebellum. The cytoskeletal protein ezrin was found to be overexpressed in medulloblastoma compared with normal cerebellum, an observation that was further validated by immunohistochemistry and real-time PCR analysis. To assess the role of ezrin in medulloblastoma, we studied ezrin's role in medulloblastoma migration, invasion, and adhesion. Western blotting and immunofluorescence showed high expression of ezrin in four medulloblastoma cell lines, and ezrin was primarily localized to filopodia. Ezrin-specific small interfering RNA suppressed the formation of filopodia and in vitro migration, invasion, and adhesion. We also used a stably transfected medulloblastoma cell line to study the effect of ezrin overexpression. We showed that high expression of ezrin promotes filopodia formation and in vitro invasion. Finally, athymic mice implanted with ezrin-overexpressing DAOY medullo-blastoma cell clones in the cerebellum showed shortened survival compared with controls. These findings suggest that, in addition to other cytoskeletal proteins, ezrin plays an important role in medulloblastoma adhesion, migration, and invasion.
Collapse
Affiliation(s)
- Hirokatsu Osawa
- Division of Neurosurgery, The Hospital for Sick Children, Toronto, ONM5G 1X8, Canada
| | | | | | | | | |
Collapse
|
43
|
Palou J, Algaba F, Vera I, Rodriguez O, Villavicencio H, Sanchez-Carbayo M. Protein expression patterns of ezrin are predictors of progression in T1G3 bladder tumours treated with nonmaintenance bacillus Calmette-Guérin. Eur Urol 2008; 56:829-36. [PMID: 18926620 DOI: 10.1016/j.eururo.2008.09.062] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2008] [Accepted: 09/30/2008] [Indexed: 11/25/2022]
Abstract
BACKGROUND Bacillus Calmette-Guérin (BCG) is a standard treatment for reducing tumour recurrence and delaying progression of high-risk, non-muscle-invasive bladder tumours. However, it is not clear yet which patients are more likely to be responders to BCG. OBJECTIVE To evaluate the role of ezrin expression in bladder cancer (BCa) progression in T1G3 bladder tumours treated with BCG. DESIGN, SETTING, AND PARTICIPANTS Ezrin protein expression patterns were analysed on tumour specimens belonging to 92 patients with T1G3 non-muscle-invasive BCa undergoing nonmaintenance BCG treatment. Re-resection was not performed. The median follow-up was 90.5 mo (range: 3.0-173.0). A specific tissue array was created containing three representative cores of each of the tumour specimens belonging to these patients. MEASUREMENTS Ezrin protein expression patterns were assessed by immunohistochemistry on this tissue array. Proliferation rates were assessed by means of Ki67 staining. Recurrence, progression into muscle-invasive tumours, and disease-specific overall survival (OS) rates were analysed using univariate and multivariate tests. RESULTS AND LIMITATIONS Among the 92 patients analysed, 40 recurred (43.5%), 17 progressed (18.5%), and 14 died of the disease (15.2%). Log-rank survival analyses revealed that an ezrin membrane expression <20% was significantly associated with increased progression (p=0.009) and shorter disease-specific OS (p=0.006). Multivariate analyses showed that ezrin was an independent prognostic marker of progression (p=0.031) and disease-specific survival (p=0.035). Interestingly, the low ezrin membrane expression correlated with high proliferation rates (p=0.033). CONCLUSIONS Immunohistochemistry analyses revealed that the membrane expression of ezrin is associated with the clinical outcome of patients with T1G3 tumours undergoing BCG treatment. Protein expression patterns of ezrin were associated with tumour progression in T1G3 disease. The differential expression of ezrin distinguished patients responding to BCG from those who may require a more aggressive therapeutic approach.
Collapse
|
44
|
Elzagheid A, Korkeila E, Bendardaf R, Buhmeida A, Heikkilä S, Vaheri A, Syrjänen K, Pyrhönen S, Carpén O. Intense cytoplasmic ezrin immunoreactivity predicts poor survival in colorectal cancer. Hum Pathol 2008; 39:1737-43. [PMID: 18701134 DOI: 10.1016/j.humpath.2008.04.020] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2008] [Revised: 03/15/2008] [Accepted: 04/01/2008] [Indexed: 11/18/2022]
Abstract
Ezrin is a membrane-cytoskeleton anchor, which, in experimental models, regulates tumor cell invasion and metastatic ability. We carried out immunohistochemical analysis of ezrin in 74 advanced colorectal cancer patients and correlated it to clinicopathologic variables and disease outcome. In contrast to the predominantly membraneous immunoreactivity of normal colorectal epithelium, ezrin expression in the colorectal cells was typically cytoplasmic. Altogether, 16.2% (12/74) of the tumors showed negative/weak ezrin staining, 35.1% (26/74) had moderate staining, and 48.6% (36/74) had intense staining. The expression was more intense in colon than in rectal carcinomas (P = .003). Increased ezrin expression was associated with adverse outcome, that is, shorter disease-specific survival; 48.3 months and 36.6 months for negative-weak versus intense expression (P = .041) as well as shorter survival with metastases at 36 months (P = .030); the metastases(36) rates in ezrin(neg/weak), ezrin(moderate), ezrin(intense) are 58.3%, 25.0%, and 18.4%, respectively. In univariate survival analysis, dichotomized (negative/weak versus moderate/strong) ezrin expression significantly predicted both the 5-year disease specific survival (P = .035) and 5-year metastases (P = .018) but lost this predictive power in multivariate (Cox) analysis. High ezrin expression was also related to high E-cadherin (cytoplasmic) expression, DNA aneuploidy, and high thymidylate synthase expression (P = .046, P = .042, P = .046, respectively). These results suggest that ezrin may play a role in colorectal cancer progression and that ezrin expression might provide clinically valuable information in predicting the biological behavior of colorectal cancer.
Collapse
Affiliation(s)
- Adam Elzagheid
- Department of Oncology and Radiotherapy, Turku University Hospital, FIN-20521 Turku, Finland.
| | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Li Q, Wu M, Wang H, Xu G, Zhu T, Zhang Y, Liu P, Song A, Gang C, Han Z, Zhou J, Meng L, Lu Y, Wang S, Ma D. Ezrin silencing by small hairpin RNA reverses metastatic behaviors of human breast cancer cells. Cancer Lett 2007; 261:55-63. [PMID: 18155831 DOI: 10.1016/j.canlet.2007.11.018] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2007] [Revised: 11/02/2007] [Accepted: 11/05/2007] [Indexed: 01/06/2023]
Abstract
Ezrin primarily acts as a linker between the plasma membrane and the cytoskeleton and is a key component in tumor metastasis. In the present study, RNA interference (RNAi) using ezrin small hairpin RNAs (ezrin shRNAs) was used to define the roles of ezrin in the regulation of malignant behaviors of human breast cancer. The highly metastatic human breast cancer cell MDA-MB-231, in which ezrin mRNA and protein levels are the highest, was selected as a cell model in vitro. In addition, we also found that ezrin expression was up-regulated and its immuno-staining trans-located from cell membrane to cytoplasm, whereas E-cadherin expression decreased and showed the same cell distribution as ezrin in lymphatic metastases of human breast carcinomas. After repression of ezrin by more than 85% of G3PDH and 75% of beta-actin in mRNA and protein levels was maintained in the stable expressing ezrin shRNAs MDA-MB-231 cell clones, the abilities of cell motility and invasiveness were obviously inhibited with a 4-fold and 2-fold, respectively, and the altered cell polarity was observed. Western blot analyses further revealed that the silencing of ezrin induced an increased E-cadherin expression and a decreased phosphorylation of beta-catenin by inhibiting phosphorylation levels of c-src. These data indicate that ezrin overexpression positively correlated with metastatic potentials of human breast cancer cells, especially lymphatic system metastasis. Decreased ezrin expression by shRNA reversed metastatic behaviors of human breast cancer cells by inducing c-src-mediated E-cadherin expression, suggesting that ezrin may have potential values in assessing lymphatic metastasis of human breast cancers.
Collapse
Affiliation(s)
- Qiong Li
- Cancer Biology Research Center, Tongji Hospital, Huazhong University of Science and Technology, 1095 Jiefang Anv, Wuhan, Hubei 430030, PR China
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
46
|
Bal N, Yildirim S, Nursal TZ, Bolat F, Kayaselcuk F. Association of ezrin expression in intestinal and diffuse gastric carcinoma with clinicopathological parameters and tumor type. World J Gastroenterol 2007; 13:3726-9. [PMID: 17659733 PMCID: PMC4250645 DOI: 10.3748/wjg.v13.i27.3726] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the correlation between ezrin expression and types of gastric carcinoma and clinico-pathological variables.
METHODS: We examined ezrin protein expression in 75 gastric carcinoma (53 intestinal types of adenocarcinoma, 22 diffuse types of carcinoma) tissues by immunohistochemistry. The results were compared with clinicopathological parameters such as tumor type, grade of tumor, clinical stage, presence of metastatic lymph node, and depth of invasion.
RESULTS: Ezrin immunostaining was positive in 43 cases (81.1%) of intestinal type and in 9 (40.9%) cases of diffuse type adenocarcinomas (P < 0.001). In gastric carcinomas, the expression of ezrin protein correlated with the status of H pylori and survival. There was no correlation between expression of ezrin with TNM stage and histological grade of gastric carcinomas (P > 0.05).
CONCLUSION: The low expression of ezrin implicates the loss of adhesion in diffuse carcinomas. Furthermore, overexpression of ezrin in carcinomas with H pylori infection may be a genuine specific pathway in which H pylori may cause/initiate gastric carcinoma.
Collapse
Affiliation(s)
- Nebil Bal
- Baskent University, Adana Research and Medical Center, Pathology Department, Yuregir, Adana 01250, Turkey
| | | | | | | | | |
Collapse
|
47
|
Abal M, Llauradó M, Doll A, Monge M, Colas E, González M, Rigau M, Alazzouzi H, Demajo S, Castellví J, García A, Ramón y Cajal S, Xercavins J, Vázquez-Levin MH, Alameda F, Gil-Moreno A, Reventos J. Molecular determinants of invasion in endometrial cancer. Clin Transl Oncol 2007; 9:272-7. [PMID: 17525037 DOI: 10.1007/s12094-007-0054-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Endometrial carcinoma is the most common gynaecological malignancy in the western world and the most frequent among infiltrating tumours of the female genital tract. Despite the characterisation of molecular events associated with the development of endometrial carcinoma, those associated with the early steps of infiltration and invasion in endometrial cancer are less known. Deep myometrial invasion correlates with more undifferentiated tumours, lymph-vascular invasion, node affectation and decreased global survival. In this review we present an overview of the molecular pathology of myometrial infiltration that defines the initial steps of invasion in endometrial cancer. Down-regulation of E-cadherin as a main player of epithelial to mesenchymal transition, as well as modifications on other molecules involved in cell-cell contacts, render cells with a migratory phenotype. In addition, altered signalling pathways and transcription factors associate with myometrial invasion, histologic grade and metastasis.
Collapse
Affiliation(s)
- M Abal
- Biomedical Research Unit, Research Institute Vall d'Hebron University Hospital, Barcelona, Spain.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
48
|
Mallikarjuna K, Pushparaj V, Biswas J, Krishnakumar S. Expression of epidermal growth factor receptor, ezrin, hepatocyte growth factor, and c-Met in uveal melanoma: an immunohistochemical study. Curr Eye Res 2007; 32:281-90. [PMID: 17453948 DOI: 10.1080/02713680601161220] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The immunoreactivity of epidermal growth factor receptor (EGFR) ezrin, hepatocyte growth factor receptor (HGF), and c-Met was studied in 60 uveal melanomas and was correlated with clinicopathologic parameters. Metastases were diagnosed in the patients with uveal melanoma between 5 years and 8 years (median, 6.5 years) after enucleation. Using Kaplan-Meier statistical analysis, we found a significant association between high c-Met expression and death due to uveal melanoma (p < 0.03). EGFR was expressed in 18 of 60 (30%) tumors; ezrin was expressed in 30 of 60 (50%) tumors. Tumors with liver metastasis (n = 6) showed higher expression of c-Met (p = 0.0009) compared with the tumors with no extension/extrascleral extension without liver metastasis (groups A-45 and B-9). HGF was negative in all the six tumors that had liver metastasis. Further studies are required to understand the possible mechanism of ligand-independent c-Met activation in patients with uveal melanoma.
Collapse
Affiliation(s)
- Kandalam Mallikarjuna
- Department of Ocular Pathology, Medical and Vision Research Foundation, Sankara Nethralaya, Chennai, India
| | | | | | | |
Collapse
|
49
|
Peng S, Fan S, Li X, Wang L, Liu H, Zhou M, Wang L, Shen S, Li G. The expression of ezrin in NPC and its interaction with NGX6, a novel candidate suppressor. Cancer Sci 2007; 98:341-9. [PMID: 17270023 PMCID: PMC11158500 DOI: 10.1111/j.1349-7006.2007.00410.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Ezrin, the linker between membrane protein and cytoskeleton, plays an important role in the cellular morphology, cytoskeleton reorganization, adhesion, invasion and metastasis. In this study, ezrin was found to express in high levels either in nasopharyngeal carcinoma tissues or in nasopharyngeal carcinoma 5-8F cells and the knockdown of ezrin expression in the 5-8F cells by RNA interferance could reduce invasive ability, suggesting that ezrin is involved in the progression and invasion of nasopharyngeal carcinoma. Nasopharyngeal carcinoma-associated gene 6 is a novel candidate suppressor gene of tumor metastasis, which was originally cloned in nasopharyngeal carcinoma high-frequency heterozygosity loss region 9p21-22 and is down-regulated in nasopharyngeal carcinoma. In the present study, we hypothesize that nasopharyngeal carcinoma-associated gene 6 plays an inhibitory role in the migration and invasion of nasopharyngeal carcinoma cells via modulating the function of ezrin. Firstly, different mutants of NGX6 were constructed and transfected into nasopharyngeal carcinoma 5-8F cells. The invasion and migration of 5-8F cells overexpressing nasopharyngeal carcinoma-associated gene 6 or mutants were measured. The results showed that enhanced expression of nasopharyngeal carcinoma-associated gene 6 could reduce invasive and migratory abilities of 5-8F cells, and the cytoplasmic domain was essential for nasopharyngeal carcinoma-associated gene 6 to modulate cell migration and invasion. Further experiment results showed that nasopharyngeal carcinoma-associated gene 6 protein was associated with ezrin by its cytoplasm region, and it could down-regulate the expression level of ezrin. These results demonstrated that nasopharyngeal carcinoma-associated gene 6 was probably involved in the modulation of invasive and adhesive ability of nasopharyngeal carcinoma cells by down-regulating the expression level of ezrin.
Collapse
Affiliation(s)
- Shuping Peng
- Cancer Research Institute, Xiang-Ya Shool of Medicine, Central South University, Hunan, 410078, China
| | | | | | | | | | | | | | | | | |
Collapse
|
50
|
Zhang Y, Hu MY, Wu WZ, Wang ZJ, Zhou K, Zha XL, Liu KD. The membrane-cytoskeleton organizer ezrin is necessary for hepatocellular carcinoma cell growth and invasiveness. J Cancer Res Clin Oncol 2006; 132:685-97. [PMID: 16786358 DOI: 10.1007/s00432-006-0117-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2005] [Accepted: 04/25/2006] [Indexed: 11/25/2022]
Abstract
PURPOSE The change of cell mobility is one of the preconditions of tumor metastasis. Cell skeleton alteration and rearrangement of F-actin was closely related to cell mobility. Ezrin is a membrane-cytoskeleton organizer that can mediate the rearrangement and the function of F-actin. In this paper, we investigated the effect of ezrin on hepatocellular carcinoma cell growth and invasiveness. METHODS Hepatocellular carcinoma cell lines such as MHCC-1, MHCC97-H, SF7721, SMMC7721, Hep3B, and HepG2 were chosen in this study. We first examined the expression and the distribution of ezrin and F-actin in these cell lines using immunofluorescence, RT-PCR, and the western blot. Next we used small interfering RNA (siRNA) to down-regulate ezrin expression in MHCC-1, MHCC97-H, SF7721, and HepG2 to investigate the role of ezrin in tumor cell growth and invasiveness. RESULTS Our preliminary results showed that the expression of ezrin and gamma-actin in MHCC-1, MHCC97-H, and SF7721 with higher metastatic potential were obviously up-regulated than those in SMMC7721, Hep3B, and HepG2 with lower potential. No different expression of beta-actin was found in the above tumor cell lines. The outcome of RNAi indicated that decreasing ezrin expression can notably inhibit the proliferation of the four hepatocellular carcinoma cell lines (p < 0.01, n = 10). The proportion of cells in G2-M phase also decreased after RNAi. The number of pseudopods decreased as well after RNAi treatment (p < 0.01, n = 5). The mobility and invasiveness of cancer cells decreased with decreasing ezrin expression tested by transwell assay (p < 0.01, n = 8). CONCLUSION Ezrin plays an important role in the process of hepatocellular carcinoma cell proliferation, migration, and invasiveness.
Collapse
Affiliation(s)
- Yan Zhang
- Experimental Center of Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | | | | | | | | | | | | |
Collapse
|