1
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Focaccio A, Rossi L, De Luca A. A spotlight on the role of copper in the epithelial to mesenchymal transition. Life Sci 2024; 354:122972. [PMID: 39142503 DOI: 10.1016/j.lfs.2024.122972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 07/29/2024] [Accepted: 08/10/2024] [Indexed: 08/16/2024]
Abstract
The complex process known as epithelial to mesenchymal transition (EMT) plays a fundamental role in several biological settings, encompassing embryonic development, wound healing, and pathological conditions such as cancer and fibrosis. In recent years, a bulk of research has brought to light the key role of copper, a trace element with essential functions in cellular metabolism, cancer initiation and progression. Indeed, copper, besides functioning as cofactor of enzymes required for essential cellular processes, such as energy production and oxidation reactions, has emerged as an allosteric regulator of kinases whose activity is required to fulfill cancer dissemination through the EMT. In this comprehensive review, we try to describe the intricate relationship between the transition metal copper and EMT, spanning from the earliest foundational studies to the latest advancements. Our aim is to shed light on the multifaceted roles undertaken by copper in EMT in cancer and to unveil the diverse mechanisms by which copper homeostasis exerts its influence over EMT regulators, signaling pathways, cell metabolic reprogramming and transcription factors ultimately contributing to the spread of cancer. Therefore, this review not only may contribute to a deeper comprehension of copper-mediated mechanisms in EMT but also supports the hypothesis that targeting copper may contribute to counteract the progression of EMT-associated pathologies.
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Affiliation(s)
- Antonio Focaccio
- PhD School in Cellular and Molecular Biology, Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Luisa Rossi
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy
| | - Anastasia De Luca
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy.
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2
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Wang W, Zhou Y, Li W, Quan C, Li Y. Claudins and hepatocellular carcinoma. Biomed Pharmacother 2024; 171:116109. [PMID: 38185042 DOI: 10.1016/j.biopha.2023.116109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/23/2023] [Accepted: 12/28/2023] [Indexed: 01/09/2024] Open
Abstract
Hepatocellular carcinoma (HCC) has a high incidence and dismal prognosis, making it a significant global health burden. To change this, the development of new therapeutic strategies is imminent. The claudin (CLDN) family, as key components of tight junctions (TJs), plays an important role in the initiation and development of cancer. Dysregulated expression of CLDNs leads to loss of intercellular adhesion and aberrant cell signaling, which are closely related to cancer cell invasion, migration, and epithelial-mesenchymal transition (EMT). CLDN1, CLDN3, CLDN4, CLDN5, CLDN6, CLDN7, CLDN9, CLDN10, CLDN11, CLDN14, and CLDN17 are aberrantly expressed in HCC, which drives the progression of the disease. Consequently, they have tremendous potential as prognostic indicators and therapeutic targets. This article summarizes the aberrant expression, molecular mechanisms, and clinical application studies of different subtypes of CLDNs in HCC, with a particular emphasis on CLDN1.
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Affiliation(s)
- Wentao Wang
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin 130021, China; The Second Norman Bethune College of Clinical Medicine, Jilin University, Changchun 130021, China
| | - Yi Zhou
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin 130021, China; The First Norman Bethune College of Clinical Medicine, Jilin University, Changchun 130021, China
| | - Wei Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin 130021, China
| | - Chengshi Quan
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin 130021, China
| | - Yanru Li
- The Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Sciences, Jilin University, 126 Xinmin Avenue, Changchun, Jilin 130021, China.
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3
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Tao D, Guan B, Li H, Zhou C. Expression patterns of claudins in cancer. Heliyon 2023; 9:e21338. [PMID: 37954388 PMCID: PMC10637965 DOI: 10.1016/j.heliyon.2023.e21338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 11/14/2023] Open
Abstract
Claudins are four-transmembrane proteins, which were found in tight junctions. They maintain cell barriers and regulate cell differentiation and proliferation. They are involved in maintaining cellular polarity and normal functions. Different claudins show different expression patterns. The expression level and localization of claudins are altered in various cancers. They promote or inhibit proliferation, invasion, and migration of cancer cells through multiple signaling pathways. Therefore, claudins may serve as diagnostic markers, novel therapeutic targets, and prognostic risk factors. The important roles of claudins in cancer aroused our great interest. In the present review, we provide a summary of insights into expression patterns of claudins in cancer, which is more comprehensive and provides new ideas for further research.
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Affiliation(s)
- Daoyu Tao
- Department of Pathology, The Second Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Bingxin Guan
- Department of Pathology, The Second Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Hui Li
- Department of Pathology, The Second Hospital of Shandong University, Jinan, 250012, Shandong, China
| | - Chengjun Zhou
- Department of Pathology, The Second Hospital of Shandong University, Jinan, 250012, Shandong, China
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4
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Zhu J, Jiang Q. Twist1‑mediated transcriptional activation of Claudin‑4 promotes cervical cancer cell migration and invasion. Oncol Lett 2023; 26:335. [PMID: 37427351 PMCID: PMC10326656 DOI: 10.3892/ol.2023.13921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2023] [Accepted: 05/25/2023] [Indexed: 07/11/2023] Open
Abstract
Claudin-4, a member of the claudin multigene family, participates in events associated with mesenchymal-like activity of cancerous cells. Claudin-4 expression is upregulated in cervical cancer tissue compared with that in adjoining non-neoplastic tissue. However, the mechanisms that regulate Claudin-4 expression in cervical cancer are poorly understood. Moreover, whether Claudin-4 contributes to the migration and invasion of cervical cancer cells remains unclear. By western blotting, reverse transcription-qPCR, bioinformatics analysis, dual-luciferase reporter assay, chromatin immunoprecipitation assay, wound healing assay and Transwell migration/invasion assay, the present study confirmed that Claudin-4 was a downstream target of Twist1, a helix-loop-helix transcriptional factor, the activity of which has a positive correlation with Claudin-4 expression. Mechanistically, Twist1 directly binds to Claudin-4 promoter, resulting in the transactivation of expression. The depletion of the Twist1-binding E-Box1 domain on Claudin-4 promoter via CRISPR-Cas9 knockout system downregulates Claudin-4 expression and suppresses the ability of cervical cancer cells to migrate and invade by elevating E-cadherin levels and lowering N-cadherin levels. Following activation by transforming growth factor-β, Twist1 induces Claudin-4 expression, thus enhancing migration and invasion of cervical cancer cells. In summary, the present data suggested that Claudin-4 was a direct downstream target of Twist1 and served a critical role in promoting Twist1-mediated cervical cancer cell migration and invasion.
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Affiliation(s)
- Jiaqi Zhu
- Department of Gynecology, Beilun People's Hospital, Beilun Branch of The First Affiliated Hospital, School of Medicine, Zhejiang University, Ningbo, Zhejiang 315826, P.R. China
| | - Qi Jiang
- Department of Obstetrics, Beilun People's Hospital, Beilun Branch of The First Affiliated Hospital, School of Medicine, Zhejiang University, Ningbo, Zhejiang 315826, P.R. China
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5
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Popescu TCT, Stepan AE, Florescu MM, Stepan MD, Simionescu CE. Immunoexpression of Claudins -3, -4 and -7 in prostate adenocarcinomas. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2023; 64:165-171. [PMID: 37518873 PMCID: PMC10520377 DOI: 10.47162/rjme.64.2.06] [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: 11/23/2022] [Accepted: 06/25/2023] [Indexed: 08/01/2023]
Abstract
Claudins are a family of essential tight junction proteins, abnormally expressed in human carcinomas. The studies that indicated the involvement of claudins in tumor biology and progression suggest the possibility of their utility as markers for diagnosis or prognosis, but also as possible targets for therapy. We investigated 50 prostate adenocarcinomas (PAs) for which we followed the expression of Claudins -3, -4 and -7 in relation to International Society of Urological Pathology (ISUP) grades. We observed the positivity for Claudin-3, Claudin-4, and Claudin-7 in 76%, 74% and 46% of cases. Analysis of the immunoexpression pattern revealed the cytoplasmic and nuclear translocation for Claudins -3 and -4, and only cytoplasmic for Claudin-7. For all claudins investigated, we noted a final staining score with significantly higher values or at the limit of statistical significance for PA belonging to ISUP groups 1-4. The internalization of Claudins -3, -4 and -7 expression, regardless of the degree of PA, indicates their involvement in prostate carcinogenesis. In addition, the similar immunoexpression patterns of the three investigated claudins and their positive linear correlation suggest a coordinated regulation and indicate the possibility of a targeted treatment strategy.
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Affiliation(s)
| | - Alex Emilian Stepan
- Department of Pathology, University of Medicine and Pharmacy of Craiova, Romania
| | | | - Mioara Desdemona Stepan
- Department of Infant Care–Pediatrics–Neonatology, University of Medicine and Pharmacy of Craiova, Romania
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6
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Nehme Z, Roehlen N, Dhawan P, Baumert TF. Tight Junction Protein Signaling and Cancer Biology. Cells 2023; 12:243. [PMID: 36672179 PMCID: PMC9857217 DOI: 10.3390/cells12020243] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 12/29/2022] [Accepted: 01/02/2023] [Indexed: 01/11/2023] Open
Abstract
Tight junctions (TJs) are intercellular protein complexes that preserve tissue homeostasis and integrity through the control of paracellular permeability and cell polarity. Recent findings have revealed the functional role of TJ proteins outside TJs and beyond their classical cellular functions as selective gatekeepers. This is illustrated by the dysregulation in TJ protein expression levels in response to external and intracellular stimuli, notably during tumorigenesis. A large body of knowledge has uncovered the well-established functional role of TJ proteins in cancer pathogenesis. Mechanistically, TJ proteins act as bidirectional signaling hubs that connect the extracellular compartment to the intracellular compartment. By modulating key signaling pathways, TJ proteins are crucial players in the regulation of cell proliferation, migration, and differentiation, all of which being essential cancer hallmarks crucial for tumor growth and metastasis. TJ proteins also promote the acquisition of stem cell phenotypes in cancer cells. These findings highlight their contribution to carcinogenesis and therapeutic resistance. Moreover, recent preclinical and clinical studies have used TJ proteins as therapeutic targets or prognostic markers. This review summarizes the functional role of TJ proteins in cancer biology and their impact for novel strategies to prevent and treat cancer.
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Affiliation(s)
- Zeina Nehme
- Université de Strasbourg, Inserm, Institut de Recherche sur les Maladies Virales et Hépatiques UMR_S1110, 67000 Strasbourg, France
| | - Natascha Roehlen
- Université de Strasbourg, Inserm, Institut de Recherche sur les Maladies Virales et Hépatiques UMR_S1110, 67000 Strasbourg, France
- Department of Medicine II (Gastroenterology, Hepatology, Endocrinology and Infectious Diseases), Freiburg University Medical Center, Faculty of Medicine, University of Freiburg, 79098 Freiburg, Germany
| | - Punita Dhawan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, 68198 NE, USA
- Buffet Cancer Center, University of Nebraska Medical Center, Omaha, 68105 NE, USA
- VA Nebraska-Western Iowa Health Care System, Omaha, 68105-1850 NE, USA
| | - Thomas F. Baumert
- Université de Strasbourg, Inserm, Institut de Recherche sur les Maladies Virales et Hépatiques UMR_S1110, 67000 Strasbourg, France
- Institut Hospitalo-Universitaire (IHU), Pôle Hépato-Digestif, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
- Institut Universitaire de France, 75006 Paris, France
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7
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Xu QR, Du XH, Huang TT, Zheng YC, Li YL, Huang DY, Dai HQ, Li EM, Fang WK. Role of Cell-Cell Junctions in Oesophageal Squamous Cell Carcinoma. Biomolecules 2022; 12:biom12101378. [PMID: 36291586 PMCID: PMC9599896 DOI: 10.3390/biom12101378] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 02/05/2023] Open
Abstract
Cell-cell junctions comprise various structures, including adherens junctions, tight junctions, desmosomes, and gap junctions. They link cells to each other in tissues and regulate tissue homeostasis in critical cellular processes. Recent advances in cell-cell junction research have led to critical discoveries. Cell-cell adhesion components are important for the invasion and metastasis of tumour cells, which are not only related to cell-cell adhesion changes, but they are also involved in critical molecular signal pathways. They are of great significance, especially given that relevant molecular mechanisms are being discovered, there are an increasing number of emerging biomarkers, targeted therapies are becoming a future therapeutic concern, and there is an increased number of therapeutic agents undergoing clinical trials. Oesophageal squamous cell carcinoma (ESCC), the most common histological subtype of oesophageal cancer, is one of the most common cancers to affect epithelial tissue. ESCC progression is accompanied by the abnormal expression or localisation of components at cell-cell junctions. This review will discuss the recent scientific developments related to the molecules at cell-cell junctions and their role in ESCC to offer valuable insights for readers, provide a global view of the relationships between position, construction, and function, and give a reference for future mechanistic studies, diagnoses, and therapeutic developments.
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Affiliation(s)
| | | | | | | | | | | | | | - En-Min Li
- Correspondence: (E.-M.L.); (W.-K.F.)
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8
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Candido S, Tomasello B, Lavoro A, Falzone L, Gattuso G, Russo A, Paratore S, McCubrey JA, Libra M. Bioinformatic analysis of the LCN2-SLC22A17-MMP9 network in cancer: The role of DNA methylation in the modulation of tumor microenvironment. Front Cell Dev Biol 2022; 10:945586. [PMID: 36211450 PMCID: PMC9532607 DOI: 10.3389/fcell.2022.945586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 08/24/2022] [Indexed: 11/13/2022] Open
Abstract
Several features of cancer cells such as proliferation, invasion, metastatic spreading, and drug resistance are affected by their interaction with several tumor microenvironment (TME) components, including neutrophil gelatinase-associated lipocalin (NGAL), solute carrier family 22 member 17 (SLC22A17), and matrix metallopeptidase 9 (MMP9). These molecules play a key role in tumor growth, invasion, and iron-dependent metabolism of cancer cells. However, the precise epigenetic mechanisms underlying the gene regulation of Lipocalin 2 (LCN2), SLC22A17, and MMP9 in cancer still remain unclear. To this purpose, computational analysis was performed on TCGA and GTEx datasets to evaluate the expression and DNA methylation status of LCN2, SLC22A17, and MMP9 genes in different tumor types. Correlation analysis between gene/isoforms expression and DNA methylation levels of LCN2, SLC22A17, and MMP9 was performed to investigate the role of DNA methylation in the modulation of these genes. Protein network analysis was carried out using reverse phase protein arrays (RPPA) data to identify protein-protein interactions of the LCN2-SLC22A17-MMP9 network. Furthermore, survival analysis was performed according to gene expression and DNA methylation levels. Our results demonstrated that LCN2 and MMP9 were mainly upregulated in most tumor types, whereas SLC22A17 was largely downregulated, representing a specific hallmark signature for all gastrointestinal tumors. Notably, the expression of LCN2, SLC22A17, and MMP9 genes was negatively affected by promoter methylation. Conversely, intragenic hypermethylation was associated with the overexpression of SLC22A17 and MMP9 genes. Protein network analysis highlighted the role of the LCN2-SLC22A17-MMP9 network in TME by the interaction with fibronectin 1 and claudin 7, especially in rectal tumors. Moreover, the impact of expression and methylation status of LCN2, SLC22A17, and MMP9 on overall survival and progression free interval was tumor type-dependent. Overall, our analyses provide a detailed overview of the expression and methylation status of LCN2, SLC22A17, and MMP9 in all TCGA tumors, indicating that the LCN2-SLC22A17-MMP9 network was strictly regulated by DNA methylation within TME. Our findings pave the way for the identification of novel DNA methylation hotspots with diagnostic and prognostic values and suitable for epi-drug targeting.
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Affiliation(s)
- Saverio Candido
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
- Research Center for Prevention, Diagnosis and Treatment of Cancer, University of Catania, Catania, Italy
| | - Barbara Tomasello
- Department of Drug and Health Sciences, University of Catania, Catania, Italy
| | - Alessandro Lavoro
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Luca Falzone
- Epidemiology Unit, IRCCS Istituto Nazionale Tumori “Fondazione G. Pascale”, Naples, Italy
| | - Giuseppe Gattuso
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Angela Russo
- Pathological Anatomy Unit, ARNAS Garibaldi Hospital, Catania, Italy
| | - Sabrina Paratore
- Pathological Anatomy Unit, ARNAS Garibaldi Hospital, Catania, Italy
| | - James A. McCubrey
- Department of Microbiology and Immunology, Brody School of Medicine, East Carolina University, Greenville, NC, United States
| | - Massimo Libra
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
- Research Center for Prevention, Diagnosis and Treatment of Cancer, University of Catania, Catania, Italy
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Schälter F, Frech M, Dürholz K, Lucas S, Sarter K, Lebon L, Esser-von Bieren J, Dubey LK, Voehringer D, Schett G, Harris NL, Zaiss MM. Acetate, a metabolic product of Heligmosomoides polygyrus, facilitates intestinal epithelial barrier breakdown in a FFAR2-dependent manner. Int J Parasitol 2022; 52:591-601. [PMID: 35671792 DOI: 10.1016/j.ijpara.2022.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/11/2022] [Accepted: 04/11/2022] [Indexed: 11/05/2022]
Abstract
Approximately 2 billion people worldwide and a significant part of the domestic livestock are infected with soil-transmitted helminths, of which many establish chronic infections causing substantial economic and welfare burdens. Beside intensive research on helminth-triggered mucosal and systemic immune responses, the local mechanism that enables infective larvae to cross the intestinal epithelial barrier and invade mucosal tissue remains poorly addressed. Here, we show that Heligmosomoides polygyrus infective L3s secrete acetate and that acetate potentially facilitates paracellular epithelial tissue invasion by changed epithelial tight junction claudin expression. In vitro, impedance-based real-time epithelial cell line barrier measurements together with ex vivo functional permeability assays in intestinal organoid cultures revealed that acetate decreased intercellular barrier function via the G-protein coupled free fatty acid receptor 2 (FFAR2, GPR43). In vivo validation experiments in FFAR2-/- mice showed lower H. polygyrus burdens, whereas oral acetate-treated C57BL/6 wild type mice showed higher burdens. These data suggest that locally secreted acetate - as a metabolic product of the energy metabolism of H. polygyrus L3s - provides a significant advantage to the parasite in crossing the intestinal epithelial barrier and invading mucosal tissues. This is the first and a rate-limiting step for helminths to establish chronic infections in their hosts and if modulated could have profound consequences for their life cycle.
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Affiliation(s)
- Fabian Schälter
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Michael Frech
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Kerstin Dürholz
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Sébastien Lucas
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Kerstin Sarter
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Luc Lebon
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland
| | - Julia Esser-von Bieren
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland; Center of Allergy and Environment, Technical University of Munich and Helmholtz Zentrum München, Munich, Germany
| | - Lalit K Dubey
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland; Centre of Microvascular Research, William Harvey Research Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London EC1M 6BQ, United Kingdom
| | - David Voehringer
- Department of Infection Biology, University Hospital Erlangen and Friedrich-Alexander University Erlangen-Nürnberg (FAU), Erlangen, Germany
| | - Georg Schett
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany
| | - Nicola L Harris
- Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland; Department of Immunology, Monash University, Clayton, Victoria, Australia
| | - Mario M Zaiss
- Department of Internal Medicine 3, Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU) and Universitätsklinikum Erlangen, Erlangen, Germany; Global Health Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland.
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10
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Liu H, Zhang Z, Zhou S, Liu X, Li G, Song B, Xu W. Claudin-1/4 as directly target gene of HIF-1α can feedback regulating HIF-1α by PI3K-AKT-mTOR and impact the proliferation of esophageal squamous cell though Rho GTPase and p-JNK pathway. Cancer Gene Ther 2022; 29:665-682. [PMID: 34276052 DOI: 10.1038/s41417-021-00328-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 02/25/2021] [Accepted: 03/23/2021] [Indexed: 02/06/2023]
Abstract
Immunohistochemical microarray comprising 80 patients with esophageal squamous cell carcinoma (ESCC) and discovered that the expression of CLDN1 and CLDN4 were significantly higher in cancer tissues compared to para-cancerous tissues. Furthermore, CLDN4 significantly affected the overall survival of cancer patients. When two ESCC cell lines (TE1, KYSE410) were exposed to hypoxia (0.1% O2), CLDN1/4 was shown to influence the occurrence and development of esophageal cancer. Compared with the control culture group, the cancer cells cultured under hypoxic conditions exhibited obvious changes in CLDN1 and CLDN4 expression at both the mRNA and protein levels. Through genetic intervention and Chip, we found that HIF-1α could directly regulate the expression of CLDN1 and CLDN4 in cancer cells. Hypoxia can affect the proliferation and apoptosis of cancer cells by regulating the PI3K-Akt-mTOR pathway. Molecular analysis further revealed that CLDN1 and CLDN4 can participate in the regulation process and had a feedback regulatory effect on HIF-1α expression in cancer cells. In vitro cellular experiments and vivo experiments in nude mice further revealed that changes in CLDN4 expression in cancer cells could affect the proliferation of cancer cells via regulation of Rho GTP and p-JNK pathway. Whether CLDN4 can be target for the treatment of ESCC needs further research.
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Affiliation(s)
- Hong Liu
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250022, P.R. China
| | - Zhancheng Zhang
- Department of Otolaryngology, The Fourth Hospital of Jinan, Jinan, Shandong, 250031, China
| | - Shenli Zhou
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250022, P.R. China
| | - Xianfang Liu
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250022, P.R. China
| | - Guodong Li
- Department of Otolaryngology, Shanxi Provincial People's Hospital Affiliated to Shanxi Medical University, Taiyuan, 038000, P.R. China
| | - Bing Song
- School of Dentistry, Cardiff University, Cardiff, CF14 4XY, UK.
| | - Wei Xu
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250022, P.R. China.
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11
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Li X, Yang W. IRF2-induced Claudin-7 suppresses cell proliferation, invasion and migration of oral squamous cell carcinoma. Exp Ther Med 2021; 23:7. [PMID: 34815759 PMCID: PMC8593875 DOI: 10.3892/etm.2021.10929] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 07/26/2021] [Indexed: 12/24/2022] Open
Abstract
Oral squamous cell carcinoma (OSCC) is a common type of malignant tumor worldwide. Claudin-7 (CLDN7) has been reported to exhibit low expression in tissues of patients with OSCC; however, the underlying mechanisms of CLDN7 remain to be elucidated. The present study aimed to investigate the effects of CLDN7 on the progression of OSCC and identify its potential regulatory mechanisms. CLDN7 and interferon regulatory factor-2 (IRF2) expression in several OSCC cell lines were detected using reverse transcription-quantitative PCR (RT-qPCR) and western blotting. Following CLDN7 overexpression, cell proliferation, invasion and migration were determined using a Cell Counting Kit-8, colony formation, Transwell and wound healing assays, respectively. The potential binding sites of IRF2 on the CLDN7 promoter were analyzed using the PROMO and JASPAR databases, which were verified via chromatin immunoprecipitation and RT-qPCR assays. The effects of IRF2 and CLDN7 on the biological functions of OSCC cells were examined by transfection with short hairpin RNA (shRNA) against CLDN7 (sh-CLDN7), or IRF2 and CLDN7 overexpression plasmids. The results revealed that CLDN7 and IRF2 expression were significantly downregulated in OSCC cell lines, and CLDN7 overexpression reduced the proliferation, invasion and migration of OSCC cells. Additionally, IRF2 was confirmed to combine with the CLDN7 promoter. CLDN7 silencing reversed the inhibitory effects of IRF2 overexpression on the proliferation, invasion and migration of OSCC cells. Taken together, these findings demonstrated that IRF2-induced CLDN7 upregulation suppressed the proliferation, invasion and migration of OSCC cells, suggesting the possibility of CLDN7 and IRF2 as novel targets for the treatment of OSCC.
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Affiliation(s)
- Xin Li
- Department of Endodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210018, P.R. China
| | - Weidong Yang
- Department of Endodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu 210018, P.R. China
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12
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Abstract
E-cadherin is the main component of epithelial adherens junctions (AJs), which play a crucial role in the maintenance of stable cell-cell adhesion and overall tissue integrity. Down-regulation of E-cadherin expression has been found in many carcinomas, and loss of E-cadherin is generally associated with poor prognosis in patients. During the last decade, however, numerous studies have shown that E-cadherin is essential for several aspects of cancer cell biology that contribute to cancer progression, most importantly, active cell migration. In this review, we summarize the available data about the input of E-cadherin in cancer progression, focusing on the latest advances in the research of the various roles E-cadherin-based AJs play in cancer cell dissemination. The review also touches upon the "cadherin switching" in cancer cells where N- or P-cadherin replace or are co-expressed with E-cadherin and its influence on the migratory properties of cancer cells.
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Affiliation(s)
- Svetlana N Rubtsova
- N.N. Blokhin National Medical Research Center of Oncology, Institute of Carcinogenesis, Moscow, Russia
| | - Irina Y Zhitnyak
- N.N. Blokhin National Medical Research Center of Oncology, Institute of Carcinogenesis, Moscow, Russia
| | - Natalya A Gloushankova
- N.N. Blokhin National Medical Research Center of Oncology, Institute of Carcinogenesis, Moscow, Russia
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13
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Kuwatsuka S, Koike Y, Kuwatsuka Y, Yamaoka T, Murota H. Claudin-7 in keratinocytes is downregulated by the inhibition of HMG-CoA reductase and is highly expressed in the stratum granulosum of the psoriatic epidermis. J Dermatol Sci 2021; 104:132-137. [PMID: 34763991 DOI: 10.1016/j.jdermsci.2021.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/24/2021] [Accepted: 10/07/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Cholesterol is de novo synthesized in the upper epidermis and plays an important role in maintaining the normality of skin. Studying the impact of the inhibition of cholesterol de novo synthesis in the epidermis may help understand how skin homeostasis is regulated. OBJECTIVE In this study, we created a gene expression profile to investigate the effect of hydroxymethylglutaryl-coenzyme A (HMG-CoA) reductase inhibitors on epidermal homeostasis. METHODS A microarray analysis was performed using normal keratinocytes with or without HMG-CoA reductase inhibitor (pitavastatin) treatment. Real-time PCR confirmed the reproducibility of genes with altered expression in keratinocytes treated with HMG-CoA reductase inhibitors. Among these genes, we focused on reduced expression of claudin 7 histologically confirmed by immunohistochemical staining, in situ hybridization, and immunoelectron microscopy. RESULTS Claudin-7 was highly expressed in the stratum granulosum of psoriatic lesions but was not expressed in the normal epidermis. Immunoelectron microscopy revealed that claudin-7 was localized in the keratohyalin granules of psoriatic lesions. CONCLUSION These results indicate that claudin-7 expression was regulated by HMG-CoA reductase in the epidermis and might play a pathogenic role in the keratohyalin granules found in the epidermal granular layer of psoriasis.
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Affiliation(s)
- Sayaka Kuwatsuka
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yuta Koike
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Yutaka Kuwatsuka
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | | | - Hiroyuki Murota
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
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14
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Kozieł MJ, Ziaja M, Piastowska-Ciesielska AW. Intestinal Barrier, Claudins and Mycotoxins. Toxins (Basel) 2021; 13:758. [PMID: 34822542 PMCID: PMC8622050 DOI: 10.3390/toxins13110758] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/20/2021] [Accepted: 10/22/2021] [Indexed: 02/08/2023] Open
Abstract
The intestinal barrier is the main barrier against all of the substances that enter the body. Proper functioning of this barrier guarantees maintained balance in the organism. Mycotoxins are toxic, secondary fungi metabolites, that have a negative impact both on human and animal health. It was postulated that various mycotoxins may affect homeostasis by disturbing the intestinal barrier. Claudins are proteins that are involved in creating tight junctions between epithelial cells. A growing body of evidence underlines their role in molecular response to mycotoxin-induced cytotoxicity. This review summarizes the information connected with claudins, their association with an intestinal barrier, physiological conditions in general, and with gastrointestinal cancers. Moreover, this review also includes information about the changes in claudin expression upon exposition to various mycotoxins.
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15
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Tavsan Z, Ayar Kayalı H. EpCAM-claudin-tetraspanin-modulated ovarian cancer progression and drug resistance. Cell Adh Migr 2021; 14:57-68. [PMID: 32091301 PMCID: PMC7757826 DOI: 10.1080/19336918.2020.1732761] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Alterations of cell adhesion are involved in cancer progression, but the mechanisms underlying the progression and cell adhesion have remained poorly understood. Focusing on the complex between EpCAM, claudins and tetraspanins, we described a sequence of events by which of the molecules associate each other in ovarian cancer. The interactions between molecules were evaluated by immunoprecipitations and then immunoblotting. To identify the effects of complex formation on the ovarian cancer progression, the different types of ovarian cancer cell lines were compared. In this study, we report the identification of the EpCAM-claudin-4 or -7-CD82 complex in the ovarian cancer progression and metastasis in vitro. Additionally, we demonstrated palmitoylation and intra- or extra-cellular regions are critically required for the complex formation. These results represent the first direct evidence for the link between the dynamism of cell adhesion molecules and ovarian cancer progression.
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Affiliation(s)
- Zehra Tavsan
- Chemistry Department, The Graduate School of Natural and Applied Science, Dokuz Eylül University, İzmir, Turkey.,Izmir Biomedicine and Genome Center, Izmir, Turkey
| | - Hülya Ayar Kayalı
- Izmir Biomedicine and Genome Center, Izmir, Turkey.,Chemistry Department, Science Faculty, Dokuz Eylül University, Izmir, Turkey.,International Biomedicine and Genome Institute, Dokuz Eylül University, Izmir, Turkey
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16
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González-Mariscal L, Miranda J, Gallego-Gutiérrez H, Cano-Cortina M, Amaya E. Relationship between apical junction proteins, gene expression and cancer. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183278. [PMID: 32240623 DOI: 10.1016/j.bbamem.2020.183278] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 01/09/2020] [Accepted: 03/06/2020] [Indexed: 12/11/2022]
Abstract
The apical junctional complex (AJC) is a cell-cell adhesion system present at the upper portion of the lateral membrane of epithelial cells integrated by the tight junction (TJ) and the adherens junction (AJ). This complex is crucial to initiate and stabilize cell-cell adhesion, to regulate the paracellular transit of ions and molecules and to maintain cell polarity. Moreover, we now consider the AJC as a hub of signal transduction that regulates cell-cell adhesion, gene transcription and cell proliferation and differentiation. The molecular components of the AJC are multiple and diverse and depending on the cellular context some of the proteins in this complex act as tumor suppressors or as promoters of cell transformation, migration and metastasis outgrowth. Here, we describe these new roles played by TJ and AJ proteins and their potential use in cancer diagnostics and as targets for therapeutic intervention.
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Affiliation(s)
- Lorenza González-Mariscal
- Department of Physiology, Biophysics and Neuroscience, Center of Research and Advanced Studies (Cinvestav), Mexico City, Mexico.
| | - Jael Miranda
- Department of Physiology, Biophysics and Neuroscience, Center of Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Helios Gallego-Gutiérrez
- Department of Physiology, Biophysics and Neuroscience, Center of Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Misael Cano-Cortina
- Department of Physiology, Biophysics and Neuroscience, Center of Research and Advanced Studies (Cinvestav), Mexico City, Mexico
| | - Elida Amaya
- Department of Physiology, Biophysics and Neuroscience, Center of Research and Advanced Studies (Cinvestav), Mexico City, Mexico
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17
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Identification of Key Genes and Prognostic Analysis between Chromophobe Renal Cell Carcinoma and Renal Oncocytoma by Bioinformatic Analysis. BIOMED RESEARCH INTERNATIONAL 2020; 2020:4030915. [PMID: 31998788 PMCID: PMC6977339 DOI: 10.1155/2020/4030915] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Accepted: 12/05/2019] [Indexed: 12/27/2022]
Abstract
The present techniques of clinical and histopathological diagnosis hardly distinguish chromophobe renal cell carcinoma (ChRCC) from renal oncocytoma (RO). To identify differentially expressed genes (DEGs) as effective biomarkers for diagnosis and prognosis of ChRCC and RO, three mRNA microarray datasets (GSE12090, GSE19982, and GSE8271) were downloaded from the GEO database. Functional enrichment analysis of DEGs was performed by DAVID. STRING and Cytoscape were applied to construct the protein-protein interaction (PPI) network and key modules of DEGs. Visualized plots were conducted by the R language. We downloaded clinical data from the TCGA database and the influence of key genes on the overall survival of ChRCC was performed by Kaplan–Meier and Cox analyses. Gene set enrichment analysis (GSEA) was utilized in exploring the function of key genes. A total of 79 DEGs were identified. Enrichment analyses revealed that the DEGs are closely related to tissue invasion and metastasis of cancer. Subsequently, 14 hub genes including ESRP1, AP1M2, CLDN4, and CLDN7 were detected. Kaplan–Meier analysis indicated that the low expression of CLDN7 and GNAS was related to the worse overall survival in patients with ChRCC. Univariate Cox analysis showed that CLDN7 might be a helpful biomarker for ChRCC prognosis. Subgroup analysis revealed that the expression of CLDN7 showed a downtrend with the development of the clinical stage, topography, and distant metastasis of ChRCC. GSEA analysis identified that cell adhesion molecules cams, B cell receptor signaling pathway, T cell receptor signaling pathway, RIG-I like receptor signaling pathway, Toll-like receptor signaling pathway, and apoptosis pathway were associated with the expression of CLDN7. In conclusion, ESRP1, AP1M2, CLDN4, PRSS8, and CLDN7 were found to distinguish ChRCC from RO. Besides, the low expression of CLDN7 was closely related to ChRCC progression and could serve as an independent risk factor for the overall survival in patients with ChRCC.
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18
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Ji H, Ding X, Zhang W, Zheng Y, Du H, Zheng Y, Song H, Li M, Jiang Y, Xie J, Wu M, Jiao P, Wang Z, Wu H, Zhong Y. Claudin-7 Inhibits Proliferation and Metastasis in Salivary Adenoid Cystic Carcinoma Through Wnt/β-Catenin Signaling. Cell Transplant 2020; 29:963689720943583. [PMID: 32749148 PMCID: PMC7563826 DOI: 10.1177/0963689720943583] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 06/14/2020] [Accepted: 06/25/2020] [Indexed: 12/23/2022] Open
Abstract
The aim of this study was to investigate claudin-7 (CLDN7) expression in salivary adenoid cystic carcinoma (SACC) and its function in SACC cells. We determined CLDN7 expression in SACC tumors via immunohistochemistry and western blotting and evaluated the association between CLDN7 expression and clinicopathologic variables. Besides this, we constructed a stably transfected CLDN7 knockdown SACC-LM cell line via RNAi and assessed its biological behavior changes (cell viability, migration, and invasion). The correlation between CLDN7 and epithelial-mesenchymal transition (EMT) was analyzed. Additionally, a subcutaneous tumor formation model was used to assess SACC-LM cells tumorigenicity after the CLDN7 knockdown. In the present study, we found the CLDN7 expression of tumor group was lower than that in normal salivary glands and was significantly correlated with lymph node metastasis, recurrence, and gender. CLDN7 knockdown could add the proliferation and metastasis ability of SACC by regulating EMT through Wnt/β-catenin signaling pathway. In addition, CLDN7 knockdown in SACC promoted tumor growth in nude mice. CLDN7 inhibits cell proliferation and metastasis by inactivating the Wnt/β-catenin signaling in SACC. Thus, CLDN7 expression might be a useful marker to identify the potential for progression in SACC.
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Affiliation(s)
- Huan Ji
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Both the authors are co-first authors
| | - Xu Ding
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Both the authors are co-first authors
| | - Wei Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Yang Zheng
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral Pathology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Hongming Du
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral Pathology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Yangyu Zheng
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral Pathology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Haiyang Song
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Meng Li
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Yue Jiang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral Pathology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Jiaxiang Xie
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral Pathology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Ming Wu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral Pathology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Pengfei Jiao
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Zeyu Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Heming Wu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral and Maxillofacial Surgery, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
| | - Yi Zhong
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
- Institute of Stomatology, Department of Oral Pathology, Nanjing Medical University, Nanjing, Jiangsu, People’s Republic of China
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19
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Karpathiou G, Stachowitz ML, Dumollard JM, Gavid M, Froudarakis M, Prades JM, Peoc'h M. Gene Expression Comparison Between the Primary Tumor and its Lymph Node Metastasis in Head and Neck Squamous Cell Carcinoma: A Pilot Study. Cancer Genomics Proteomics 2019; 16:155-161. [PMID: 31018946 DOI: 10.21873/cgp.20121] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/05/2019] [Accepted: 04/09/2019] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND/AIM In metastatic head and neck squamous cell carcinoma (HNSCC) the metastatic tumor does not always keep the same gene expression profile as the parental tumor, which may influence the course of the disease. The aim of this study was to compare the expression of genes implicated in HNSCC carcinogenesis between the primary tumor and the corresponding lymph node metastasis. MATERIALS AND METHODS Eighteen HNSCC, their corresponding node metastases and non-neoplastic tissues were studied by RT-qPCR for the expression of EGFR, VEGF, claudin7, maspin, survivin and SCCA. The levels of expression were correlated with histological characteristics and patients' prognosis. RESULTS All genes except for survivin displayed different expression in node metastasis compared to the primary tumor. The expression of EGFR, survivin, maspin, and claudin7 in node metastasis and SSCA in the primary tumor affected the prognosis. SCCA expression is associated with the expression of claudin7 and maspin. P16-positive tumors expressed low levels of VEGF and SCCA, while keratinizing tumors over-expressed VEGF. CONCLUSION Differential gene expression levels in node metastases compared to the primary tumor is linked to the prognosis of HNSCC patients. The histological/immunohisto-chemical characteristics of the tumor are associated with these genes expression changes.
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Affiliation(s)
- Georgia Karpathiou
- Department of Pathology, North Hospital, University Hospital of St-Etienne, Saint-Étienne, France
| | - Marie-Laurie Stachowitz
- Department of Pathology, North Hospital, University Hospital of St-Etienne, Saint-Étienne, France
| | - Jean Marc Dumollard
- Department of Pathology, North Hospital, University Hospital of St-Etienne, Saint-Étienne, France
| | - Marie Gavid
- Department of Head and Neck Surgery, North Hospital, University Hospital of St-Etienne, Saint-Étienne, France
| | - Marios Froudarakis
- Department of Pneumonology, North Hospital, University Hospital of St-Etienne, Saint-Étienne, France
| | - Jean Michel Prades
- Department of Head and Neck Surgery, North Hospital, University Hospital of St-Etienne, Saint-Étienne, France
| | - Michel Peoc'h
- Department of Pathology, North Hospital, University Hospital of St-Etienne, Saint-Étienne, France
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20
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Huang G, Cheng W, Xi F. Integrated genomic and methylation profile analysis to identify candidate tumor marker genes in patients with colorectal cancer. Oncol Lett 2019; 18:4503-4514. [PMID: 31611959 PMCID: PMC6781519 DOI: 10.3892/ol.2019.10799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 07/11/2019] [Indexed: 12/15/2022] Open
Abstract
Aberrant genomic expression and methylation serve important roles in cancer development. Integrated analysis of genetic and methylation profiles may identify potential tumor marker genes for colorectal cancer (CRC) prediction. In the current study, DNA methylation and mRNA expression profiles associated with CRC were downloaded from The Cancer Genome Atlas database. Differentially expressed mRNAs and methylated genes between tumor samples and adjacent healthy tissues were identified. Candidate tumor marker genes and prognostic clinical factors were screened according to univariable and multivariable Cox regression analysis. A total of 218 DEGs with aberrant methylation levels were screened from tumor samples. A risk prediction model was constructed based on identified genes and clinical factors. Randomization tests were used to evaluate the performance of the prediction model, including area under the curve (AUC) calculation and cross-validation. Cox regression analysis revealed that eight genes and six prognostic clinical factors were significantly associated with survival outcomes. Functional and pathway enrichment analysis revealed that the eight genes were mainly involved in ‘cell adhesion’, ‘fatty acid metabolism’ and ‘cytokine receptor interaction’ pathways. After combining six clinical factors with eight genes, the accuracy of risk prediction model has been increased intensively. The P-values representing the association between risk grouping and prognosis decreased from 0.009 to 0.001 and the AUC increased from 0.992 to 0.999, indicating that the comprehensive risk prediction model exhibited a good performance for disease prognosis prediction. The current study integrated genomic and methylation profiles and identified eight tumor marker genes in CRC. These candidate genes may improve the prediction accuracy of CRC prognosis.
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Affiliation(s)
- Guojun Huang
- Department of Oncology, Pidu District People's Hospital, Chengdu, Sichuan 611730, P.R. China
| | - Wang Cheng
- Department of General Surgery, Pidu District People's Hospital, Chengdu, Sichuan 611730, P.R. China
| | - Fu Xi
- Department of Oncology, Pidu District People's Hospital, Chengdu, Sichuan 611730, P.R. China
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21
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Masterson JC, Biette KA, Hammer JA, Nguyen N, Capocelli KE, Saeedi BJ, Harris RF, Fernando SD, Hosford LB, Kelly CJ, Campbell EL, Ehrentraut SF, Ahmed FN, Nakagawa H, Lee JJ, McNamee EN, Glover LE, Colgan SP, Furuta GT. Epithelial HIF-1α/claudin-1 axis regulates barrier dysfunction in eosinophilic esophagitis. J Clin Invest 2019; 129:3224-3235. [PMID: 31264974 PMCID: PMC6668670 DOI: 10.1172/jci126744] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 05/16/2019] [Indexed: 12/19/2022] Open
Abstract
Epithelial barrier dysfunction is a significant factor in many allergic diseases, including eosinophilic esophagitis (EoE). Infiltrating leukocytes and tissue adaptations increase metabolic demands and decrease oxygen availability at barrier surfaces. Understanding of how these processes impact barrier is limited, particularly in allergy. Here, we identified a regulatory axis whereby the oxygen-sensing transcription factor HIF-1α orchestrated epithelial barrier integrity, selectively controlling tight junction CLDN1 (claudin-1). Prolonged experimental hypoxia or HIF1A knockdown suppressed HIF-1α-dependent claudin-1 expression and epithelial barrier function, as documented in 3D organotypic epithelial cultures. L2-IL5OXA mice with EoE-relevant allergic inflammation displayed localized eosinophil oxygen metabolism, tissue hypoxia, and impaired claudin-1 barrier via repression of HIF-1α/claudin-1 signaling, which was restored by transgenic expression of esophageal epithelial-targeted stabilized HIF-1α. EoE patient biopsy analysis identified a repressed HIF-1α/claudin-1 axis, which was restored via pharmacologic HIF-1α stabilization ex vivo. Collectively, these studies reveal HIF-1α's critical role in maintaining barrier and highlight the HIF-1α/claudin-1 axis as a potential therapeutic target for EoE.
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Affiliation(s)
- Joanne C. Masterson
- Allergy, Inflammation and Remodeling Research Laboratory, Human Health Research Institute, Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Kathryn A. Biette
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Juliet A. Hammer
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Nathalie Nguyen
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Kelley E. Capocelli
- Department of Pathology, Children’s Hospital Colorado, Aurora, Colorado, USA
| | - Bejan J. Saeedi
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Rachel F. Harris
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Shahan D. Fernando
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Lindsay B. Hosford
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Caleb J. Kelly
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Eric L. Campbell
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Stefan F. Ehrentraut
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Faria N. Ahmed
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
| | - Hiroshi Nakagawa
- Division of Gastroenterology, Department of Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, USA
| | | | - Eóin N. McNamee
- Allergy, Inflammation and Remodeling Research Laboratory, Human Health Research Institute, Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Louise E. Glover
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Sean P. Colgan
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
| | - Glenn T. Furuta
- Gastrointestinal Eosinophilic Diseases Program, Department of Pediatrics, University of Colorado School of Medicine; Digestive Health Institute, Children’s Hospital Colorado; Aurora, Colorado, USA
- Mucosal Inflammation Program, Department of Medicine, University of Colorado, Aurora, Colorado, USA
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22
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Bhat AA, Uppada S, Achkar IW, Hashem S, Yadav SK, Shanmugakonar M, Al-Naemi HA, Haris M, Uddin S. Tight Junction Proteins and Signaling Pathways in Cancer and Inflammation: A Functional Crosstalk. Front Physiol 2019; 9:1942. [PMID: 30728783 PMCID: PMC6351700 DOI: 10.3389/fphys.2018.01942] [Citation(s) in RCA: 239] [Impact Index Per Article: 47.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 12/22/2018] [Indexed: 12/14/2022] Open
Abstract
The ability of epithelial cells to organize through cell–cell adhesion into a functioning epithelium serves the purpose of a tight epithelial protective barrier. Contacts between adjacent cells are made up of tight junctions (TJ), adherens junctions (AJ), and desmosomes with unique cellular functions and a complex molecular composition. These proteins mediate firm mechanical stability, serves as a gatekeeper for the paracellular pathway, and helps in preserving tissue homeostasis. TJ proteins are involved in maintaining cell polarity, in establishing organ-specific apical domains and also in recruiting signaling proteins involved in the regulation of various important cellular functions including proliferation, differentiation, and migration. As a vital component of the epithelial barrier, TJs are under a constant threat from proinflammatory mediators, pathogenic viruses and bacteria, aiding inflammation and the development of disease. Inflammatory bowel disease (IBD) patients reveal loss of TJ barrier function, increased levels of proinflammatory cytokines, and immune dysregulation; yet, the relationship between these events is partly understood. Although TJ barrier defects are inadequate to cause experimental IBD, mucosal immune activation is changed in response to augmented epithelial permeability. Thus, the current studies suggest that altered barrier function may predispose or increase disease progression and therapies targeted to specifically restore the barrier function may provide a substitute or supplement to immunologic-based therapies. This review provides a brief introduction about the TJs, AJs, structure and function of TJ proteins. The link between TJ proteins and key signaling pathways in cell proliferation, transformation, and metastasis is discussed thoroughly. We also discuss the compromised intestinal TJ integrity under inflammatory conditions, and the signaling mechanisms involved that bridge inflammation and cancer.
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Affiliation(s)
- Ajaz A Bhat
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar
| | - Srijayaprakash Uppada
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE, United States
| | - Iman W Achkar
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
| | - Sheema Hashem
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar
| | - Santosh K Yadav
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar
| | | | - Hamda A Al-Naemi
- Laboratory Animal Research Center, Qatar University, Doha, Qatar.,Department of Biological and Environmental Sciences, Qatar University, Doha, Qatar
| | - Mohammad Haris
- Division of Translational Medicine, Research Branch, Sidra Medicine, Doha, Qatar.,Laboratory Animal Research Center, Qatar University, Doha, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar
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23
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Xu C, Wang X, Li W, Wang K, Ding L. Expression and Clinical Significance of Claudin-7 in Patients With Colorectal Cancer. Technol Cancer Res Treat 2018. [PMCID: PMC6295773 DOI: 10.1177/1533033818817774] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Background and Objective: Claudin-7 is a component of tight junctions and plays important roles in maintaining cell polarity and tightly connecting the barriers between cells. Abnormal claudin-7 protein expression is closely related to tumor occurrence, development, and metastasis. This study aimed to investigate the correlation between claudin-7 expression and carcinogenesis or metastasis in colorectal cancer and the clinical significance of these relationships. Materials and Methods: In this study, enzyme linked immunosorbent assays (ELISA) were used to measure the claudin-7 levels in serum from patients with colorectal cancer. Immunohistochemical staining and Western blotting were used to measure claudin-7 expression in colorectal cancer tissues, paracancerous tissues, and metastatic tissues. Results: Serum claudin-7 levels were significantly lower in patients with colorectal cancer than in healthy controls. Immunohistochemistry indicated that claudin-7 expression was lower in colorectal cancer tissues than in normal colorectal tissues, and its expression level was positively correlated with the degree of colorectal cancer tissue differentiation. Claudin-7 expression levels were significantly reduced or undetectable in metastatic tissues compared to primary tumor tissues, but there were no significant differences in claudin-7 expression among different metastatic tissues. Conclusion: We confirmed that claudin-7 downregulation was associated with colorectal cancer and metastasis. Claudin-7 could be a tumor suppressor gene for colorectal cancer and may thus serve an early diagnostic marker and a novel therapeutic target.
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Affiliation(s)
- Chang Xu
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Xiaonan Wang
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
- Liangxiang Hospital, Fangshan District, Beijing, China
| | - Wenjing Li
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Kun Wang
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Lei Ding
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
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24
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Wang K, Xu C, Li W, Ding L. Emerging clinical significance of claudin-7 in colorectal cancer: a review. Cancer Manag Res 2018; 10:3741-3752. [PMID: 30288105 PMCID: PMC6159786 DOI: 10.2147/cmar.s175383] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Tight junctions (TJs) play an important role in maintaining cell polarity and regulating cell permeability. In recent years, many studies have shown that TJ proteins, especially claudin-7, are closely related to inflammation and the development of various malignant tumors. Claudin-7 plays a significant role in maintaining the physiological functions and pathological conditions of the TJ barrier. The dysregulation of claudin-7 plays a tumor suppressor role or conversely has carcinogenic effects in different target tissues or cells, but the exact underlying mechanism is still unclear. In this review, we will summarize the expression pattern of claudin-7 in tumors, focusing on the expression and regulation of claudin-7 in colorectal cancer and discussing the correlation between claudin-7 and invasion, metastasis and epithelial–mesenchymal transition (EMT) in colorectal cancer. The construction of Cldn7−/− mice and conventional claudin-7 knockout mouse models has helped determine the mechanisms by which claudin-7 promotes tumorigenesis. Elucidation of the expression and subcellular localization of claudin-7 under pathological conditions will help develop claudin-7 as a useful biomarker for detecting and diagnosing cancer, and thus may help combat the occurrence, development, and invasion of cancers.
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Affiliation(s)
- Kun Wang
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, People's Republic of China,
| | - Chang Xu
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, People's Republic of China,
| | - Wenjing Li
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, People's Republic of China,
| | - Lei Ding
- Department of Oncology, Beijing Shijitan Hospital, Capital Medical University, Beijing, 100038, People's Republic of China,
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25
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Constantinou C, Papadopoulos S, Karyda E, Alexopoulos A, Agnanti N, Batistatou A, Harisis H. Expression and Clinical Significance of Claudin-7, PDL-1, PTEN, c-Kit, c-Met, c-Myc, ALK, CK5/6, CK17, p53, EGFR, Ki67, p63 in Triple-negative Breast Cancer-A Single Centre Prospective Observational Study. ACTA ACUST UNITED AC 2018; 32:303-311. [PMID: 29475913 DOI: 10.21873/invivo.11238] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 01/14/2018] [Accepted: 01/22/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND/AIM To explore the relationship between p53, p63, c-kit, Ki67, cMet, claudin7, CK5/6, CK17, AR, PTEN, EGFR, ALK, PDL-1 and c-MYC expression with the clinicopathological features of triple- negative breast cancer. MATERIALS AND METHODS Immunohistochemistry was performed in 84 triple-negative breast cancer samples. RESULTS A statistically significant relationship between tumour grade and claudin-7 (p=0.004) and between protein p53 and positive lymph nodes (p=0.015) was found. High expression of claudin-7 (OR=65.8, 95%CI=4.35-995.19, p-value=0.003) and low expression of c-kit (OR=0.14, 95%CI=0.025-0.793, p-value=0.026) and protein p63 (OR=0.18 95%CI=0.035-0.978, p-value=0.047) was associated with higher tumour grade. Higher AR expression (OR=13.44, 95%CI=1.28-141.56, p-value=0.031) and lower expression of CK5/6 cytokeratins was found in patients with positive lymphovascular invasion (LVI) (OR=0.072, 95%CI=0.007-0.732, p-value=0.026). Only the cell proliferation index (Ki67) has been proven to be statistically significant for disease-free survival (p-value=0.0378), and overall survival (p-value=0.0186). CONCLUSION High expression of claudin-7 and low expression of c-kit and protein p63 are associated with higher tumour grade. AR and CK5/6 expression seem to be important in LVI.
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Affiliation(s)
- Chloe Constantinou
- Breast Unit, Royal Free Hospital, London, U.K. .,Breast Unit, Hygeia Hospital, Athens, Greece
| | | | | | | | - Niki Agnanti
- Medical School, University of Ioannina, Ioannina, Greece
| | | | - Haris Harisis
- Medical School, University of Ioannina, Ioannina, Greece
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26
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Tomono T, Machida T, Kamioka H, Shibasaki Y, Yano K, Ogihara T. Entinostat reverses P-glycoprotein activation in snail-overexpressing adenocarcinoma HCC827 cells. PLoS One 2018; 13:e0200015. [PMID: 29979729 PMCID: PMC6034804 DOI: 10.1371/journal.pone.0200015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/18/2018] [Indexed: 12/16/2022] Open
Abstract
Epithelial-to-mesenchymal transition (EMT) in cancer cells facilitates tumor progression by promoting invasion and metastasis. Snail is a transcriptional factor that induces EMT, while P-glycoprotein (P-gp) is an efflux transporter involved in anticancer drug resistance, and P-gp efflux activity is stimulated in Snail-overexpressing lung cancer cells with EMT characteristics. Since the histone deacetylase (HDAC) inhibitor entinostat (Ent) reverses EMT features, our aim in this study was to determine whether Ent also suppresses P-gp activation in Snail-induced cells. First, we confirmed that Ent treatment reduced migration activity, downregulated E-cadherin and upregulated vimentin at the mRNA level in Snail-overexpressing cells, thus inhibiting EMT. Efflux and uptake assays using rhodamine123 (Rho123), a fluorescent P-gp substrate, showed that Ent also inhibited Snail-induced activation of P-gp. Moreover, P-gp activity was more strongly inhibited by Ent in Snail-overexpressing cells than in Mock cells. When we evaluated the uptakes of Rho123 by LLC-PK1 cells and P-gp-overexpressing LLC-GA5COL150 cells, Rho123 accumulation in LLC-GA5COL150 cells was significantly decreased compared with that in LLC-PK1 cells. Coincubation with Ent had no effect on Rho123 accumulation in either of the cell lines. Thus, Ent appears to be an inhibitor, but not a substrate, of P-gp at low concentration. Our results suggest that Ent treatment might suppress not only Snail-induced cancer malignant alteration, but also P-gp-mediated multidrug resistance.
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Affiliation(s)
- Takumi Tomono
- Laboratory of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Takasaki University of Health and Welfare, Takasaki-shi, Gunma, Japan
| | - Tatsuya Machida
- Laboratory of Biopharmaceutics, Faculty of Pharmacy, Takasaki University of Health and Welfare, Takasaki-shi, Gunma, Japan
| | - Hiroki Kamioka
- Laboratory of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Takasaki University of Health and Welfare, Takasaki-shi, Gunma, Japan
| | - Yumi Shibasaki
- Laboratory of Biopharmaceutics, Faculty of Pharmacy, Takasaki University of Health and Welfare, Takasaki-shi, Gunma, Japan
| | - Kentaro Yano
- Laboratory of Biopharmaceutics, Faculty of Pharmacy, Takasaki University of Health and Welfare, Takasaki-shi, Gunma, Japan
| | - Takuo Ogihara
- Laboratory of Clinical Pharmacokinetics, Graduate School of Pharmaceutical Sciences, Takasaki University of Health and Welfare, Takasaki-shi, Gunma, Japan
- Laboratory of Biopharmaceutics, Faculty of Pharmacy, Takasaki University of Health and Welfare, Takasaki-shi, Gunma, Japan
- * E-mail:
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27
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Zhu S, Liu J, Min L, Sun X, Guo Q, Li H, Zhang Z, Zhao Y, Gu J, Zhang S. Cadherin Expression Shift Could Well Distinguish Esophageal Squamous Cell Carcinoma from Non- Cancerous Esophageal Tissues. Oncol Res Treat 2018; 41:380-385. [PMID: 29734166 DOI: 10.1159/000487267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Accepted: 01/30/2018] [Indexed: 11/19/2022]
Abstract
BACKGROUND Biomarkers for esophageal squamous cell carcinoma (ESCC) identification with high sensitivity are not well established. Since abnormal expression of cadherins has been widely reported in cancer, we explored its feasibility as an ESCC biomarker. METHODS Expression of E-cadherin and N-cadherin were detected in 150 esophageal tissues by immunohistochemistry. Staining strength and percentage in different subcellular structures of each specimen were evaluated by 2 independent pathologists. A logistic regression-based classifier derived from E-cadherin and N-cadherin staining was generated. RESULTS E-cadherin exhibited decreased membrane expression in ESCC, while N-cadherin exhibited decreased expression in the nucleus but elevated expression in the cytoplasm. Both E-cadherin and N-cadherin could distinguish ESCC tissues from non-cancerous tissues (area under the curve (AUC) = 0.748, 0.801, respectively). E-cadherin and N-cadherin staining scores could be merged into a cadherin (CDH) logistic index, which showed better discrimination (AUC = 0.909) than E-cadherin or N-cadherin alone. Further investigation indicated that the CDH logistic index was significantly correlated with tumor size and differentiation in ESCC. CONCLUSION Both E-cadherin and N-cadherin had a strong expression shift in ESCC compared with non-cancerous tissues. The CDH logistic index, a parameter integrating the expression data of both cadherins, could be used as a marker with high sensitivity and specificity in the identification of ESCC.
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28
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Barbhuiya MA, Kashyap MK, Puttamallesh VN, Kumar RV, Wu X, Pandey A, Gowda H. Identification of spleen tyrosine kinase as a potential therapeutic target for esophageal squamous cell carcinoma using reverse phase protein arrays. Oncotarget 2018; 9:18422-18434. [PMID: 29719615 PMCID: PMC5915082 DOI: 10.18632/oncotarget.24853] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 03/06/2018] [Indexed: 02/07/2023] Open
Abstract
The vast majority of esophageal cancers in China, India and Iran are esophageal squamous cell carcinomas (ESCC). A timely diagnosis provides surgical removal as the main therapeutic option for patients with ESCC. Currently, there are no targeted therapies available for ESCC. We carried out reverse phase protein array-based protein expression profiling of seven ESCC-derivedcell lines and a non-neoplastic esophageal epithelial cell line (Het-1A) to identify differentially expressed proteins in ESCC. SYK non-receptortyrosine kinase was overexpressed in six out of seven ESCC cell lines that were used in the study. We evaluated the role of SYK in ESCC using the pharmacological inhibitor entospletinib (GS-9973) and siRNA-based knock down studies. Entospletinib is a selective inhibitor of SYK, which is currently being evaluated in phase II clinical trials for hematological malignancies. Using in vivo subcutaneous tumor xenografts in mice, we demonstrate that treatment with entospletinib significantly inhibits tumor growth. Further clinical studies are needed to prove the efficacy of entospletinib as a targeted therapeutic agent for treating ESCC.
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Affiliation(s)
- Mustafa A. Barbhuiya
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Sidney Kimmel Comprehensive Cancer Centre, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Manoj K. Kashyap
- School of Life and Allied Health Sciences, Glocal University, Saharanpur, India
| | - Vinuth N. Puttamallesh
- Institute of Bioinformatics, International Technology Park, Bangalore, India
- Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India
| | - Rekha Vijay Kumar
- Department of Pathology, Kidwai Memorial Institute of Oncology, Bangalore, India
| | - Xinyan Wu
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Akhilesh Pandey
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Sidney Kimmel Comprehensive Cancer Centre, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Institute of Bioinformatics, International Technology Park, Bangalore, India
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Harsha Gowda
- Institute of Bioinformatics, International Technology Park, Bangalore, India
- Manipal Academy of Higher Education (MAHE), Manipal, India
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29
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Barbhuiya MA, Kashyap MK, Puttamallesh VN, Kumar RV, Wu X, Pandey A, Gowda H. Identification of spleen tyrosine kinase as a potential therapeutic target for esophageal squamous cell carcinoma using reverse phase protein arrays. Oncotarget 2018. [PMID: 29719615 DOI: 10.18632/oncotarget.24853,] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The vast majority of esophageal cancers in China, India and Iran are esophageal squamous cell carcinomas (ESCC). A timely diagnosis provides surgical removal as the main therapeutic option for patients with ESCC. Currently, there are no targeted therapies available for ESCC. We carried out reverse phase protein array-based protein expression profiling of seven ESCC-derivedcell lines and a non-neoplastic esophageal epithelial cell line (Het-1A) to identify differentially expressed proteins in ESCC. SYK non-receptortyrosine kinase was overexpressed in six out of seven ESCC cell lines that were used in the study. We evaluated the role of SYK in ESCC using the pharmacological inhibitor entospletinib (GS-9973) and siRNA-based knock down studies. Entospletinib is a selective inhibitor of SYK, which is currently being evaluated in phase II clinical trials for hematological malignancies. Using in vivo subcutaneous tumor xenografts in mice, we demonstrate that treatment with entospletinib significantly inhibits tumor growth. Further clinical studies are needed to prove the efficacy of entospletinib as a targeted therapeutic agent for treating ESCC.
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Affiliation(s)
- Mustafa A Barbhuiya
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Sidney Kimmel Comprehensive Cancer Centre, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Manoj K Kashyap
- School of Life and Allied Health Sciences, Glocal University, Saharanpur, India
| | - Vinuth N Puttamallesh
- Institute of Bioinformatics, International Technology Park, Bangalore, India.,Amrita School of Biotechnology, Amrita Vishwa Vidyapeetham, Kollam, India
| | - Rekha Vijay Kumar
- Department of Pathology, Kidwai Memorial Institute of Oncology, Bangalore, India
| | - Xinyan Wu
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Akhilesh Pandey
- McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Sidney Kimmel Comprehensive Cancer Centre, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Institute of Bioinformatics, International Technology Park, Bangalore, India.,Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Manipal Academy of Higher Education (MAHE), Manipal, India
| | - Harsha Gowda
- Institute of Bioinformatics, International Technology Park, Bangalore, India.,Manipal Academy of Higher Education (MAHE), Manipal, India
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30
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Epi/perineural and Schwann Cells as Well as Perineural Sheath Integrity are Affected Following 2,4-D Exposure. Neurotox Res 2017; 32:624-638. [PMID: 28699141 DOI: 10.1007/s12640-017-9777-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Revised: 06/24/2017] [Accepted: 06/28/2017] [Indexed: 01/18/2023]
Abstract
2,4-dicholorophenoxy acetic acid (2,4-D) is a worldwide-known hormone herbicide. However, there are increasing concerns about its exposure and risks of developing pathological conditions for the peripheral nervous system. The aim of this study was to investigate the mechanism(s) involved in the toxicity of 2,4-D on peripheral nerve's cellular components. The epi/perineural and Schwann cells and a total of three cell lines were treated with 2,4-D. The viability of cells at different doses of 2,4-D was measured by MTT assay. The cell cycle analyses, cumulative cell counting, fluorescent staining, antioxidant and caspase enzymes activity were examined on epi/perineural and Schwann cells. The epi/perineural cells were assessed as having biological macromolecular changes. Some tight junction-related genes and proteins were also tested on explants of 2,4-D treated epi/perineural tissue. The viability of 2,4-D treated cells was reduced in a dose-dependent manner. Reduced growth rate and G1 cell cycle arrest were verified in 2,4-D treated epi/perineural and Schwann cells. The use of staining methods (acridine orange/ethidium bromide and DAPI) and caspase 3/7 activity assay along with malondialdehyde, glutathione peroxidase, and superoxide dismutase activity assays indicated the apoptotic and oxidant effects of 2,4-D on epi/perineural and Schwann cells. Data obtained from FTIR revealed changes in epi/perineural proteins and cell membrane lipids. Additionally, claudin-1, occludin, and ZO-1 gene/protein expression profiles were significantly reduced in 2,4-D-treated epi/perineural pieces. Our data indicated that oxidative stress, apoptosis of epi/perineural and Schwann cell and impaired blood-nerve barrier may have contributed to nerve damage following 2,4-D exposure.
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31
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Piontek A, Witte C, May Rose H, Eichner M, Protze J, Krause G, Piontek J, Schröder L. A cCPE-based xenon biosensor for magnetic resonance imaging of claudin-expressing cells. Ann N Y Acad Sci 2017. [PMID: 28636798 DOI: 10.1111/nyas.13363] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The majority of malignant tumors originate from epithelial cells, and many of them are characterized by an overexpression of claudins (Cldns) and their mislocalization out of tight junctions. We utilized the C-terminal claudin-binding domain of Clostridium perfringens enterotoxin (cCPE), with its high affinity to specific members of the claudin family, as the targeting unit for a claudin-sensitive cancer biosensor. To overcome the poor sensitivity of conventional relaxivity-based magnetic resonance imaging (MRI) contrast agents, we utilized the superior sensitivity of xenon Hyper-CEST biosensors. We labeled cCPE for both xenon MRI and fluorescence detection. As one readout module, we employed a cryptophane (CrA) monoacid and, as the second, a fluorescein molecule. Both were conjugated separately to a biotin molecule via a polyethyleneglycol chemical spacer and later via avidin linked to GST-cCPE. Nontransfected HEK293 cells and HEK293 cells stably expressing Cldn4-FLAG were incubated with the cCPE-based biosensor. Fluorescence-based flow cytometry and xenon MRI demonstrated binding of the biosensor specifically to Cldn4-expressing cells. This study provides proof of concept for the use of cCPE as a carrier for diagnostic contrast agents, a novel approach for potential detection of Cldn3/-4-overexpressing tumors for noninvasive early cancer detection.
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Affiliation(s)
- Anna Piontek
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Structural Bioinformatics and Protein Design, Berlin, Germany
| | - Christopher Witte
- Leibniz-Institut für Molekulare Pharmakologie (FMP), Molecular Imaging, Berlin, Germany
| | - Honor May Rose
- Leibniz-Institut für Molekulare Pharmakologie (FMP), Molecular Imaging, Berlin, Germany
| | - Miriam Eichner
- Institute of Clinical Physiology Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Jonas Protze
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Structural Bioinformatics and Protein Design, Berlin, Germany
| | - Gerd Krause
- Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Structural Bioinformatics and Protein Design, Berlin, Germany
| | - Jörg Piontek
- Institute of Clinical Physiology Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Leif Schröder
- Leibniz-Institut für Molekulare Pharmakologie (FMP), Molecular Imaging, Berlin, Germany
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32
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Hahn-Strömberg V, Askari S, Ahmad A, Befekadu R, Nilsson TK. Expression of claudin 1, claudin 4, and claudin 7 in colorectal cancer and its relation with CLDN DNA methylation patterns. Tumour Biol 2017; 39:1010428317697569. [DOI: 10.1177/1010428317697569] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Altered claudin expression has been described in colon, prostatic, ovarian, and breast carcinoma. However, the role of epigenetic modifications in these genes and their role in colorectal cancer is unknown. We aimed our study to investigate whether claudin protein expression and methylation of CLDN can influence the tumorigenesis of colorectal cancer. A total of 31 patients diagnosed with colorectal carcinoma was used in this study. Immunohistochemical staining was used to study protein expression in both tumor and the adjacent nonneoplastic mucosa of claudin 1, 4, and 7. To detect the DNA methylation pattern of CLDN1, 4, and 7, genomic DNA was extracted from both the tumor and the adjacent nonneoplastic mucosa. Methylation analysis was carried out using bisulfite pyrosequencing. Cell membrane staining intensity of all claudins was found significantly lower in colorectal cancer tissues when compared to paired normal mucosa (p ≤ 0.001). For claudin 4, the percentage of cells staining positively was also significantly reduced (p = 0.04). In normal mucosa, cytoplasm showed no staining for claudins in any patient, whereas in paired colorectal cancer tissues, significant cytoplasmic staining appeared both for claudin 1 (p = 0.04) and claudin 4 (p = 0.01). Tumor samples were significantly hypomethylated in CLDN1 (p < 0.05). In conclusion, our results show that CLDN1 is significantly hypomethylated in tumor samples and that the membrane staining intensity for claudin 1, 4, and 7 is significantly lower in colorectal cancer tissues than in adjacent nonneoplastic tissue. Colorectal cancer cells showed dystopic cytoplasmic location of claudins.
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Affiliation(s)
| | - Shlear Askari
- Department of Clinical Research, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Abrar Ahmad
- Department of Clinical Research, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Rahel Befekadu
- Department of Clinical Research, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
- Department of Laboratory Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Torbjörn K Nilsson
- Division of Clinical Chemistry, Department of Medical Biosciences, Umeå University, Umeå, Sweden
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33
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Singh AB, Uppada SB, Dhawan P. Claudin proteins, outside-in signaling, and carcinogenesis. Pflugers Arch 2017; 469:69-75. [PMID: 27988840 PMCID: PMC6166644 DOI: 10.1007/s00424-016-1919-1] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 11/27/2016] [Indexed: 12/14/2022]
Abstract
Environment affects an individual's development and disease risk which then suggest that the environmental cues must have ways of reaching to the cellular nuclei to orchestrate desired genetic changes. Polarized and differentiated epithelial cells join together by cell-cell adhesions to create a protective sheet which separates body's internal milieu from its environment, albeit in highly regulated manner. Among these cell-cell adhesions, a key role of tight junction, the apical cell-cell adhesion, in maintaining epithelial cell polarity and differentiation is well recognized. Moreover, significant changes in expression and cellular distribution of claudin proteins, integral component of the tight junction, characterize pathophysiological changes including neoplastic growth and progression. Studies have further confirmed existence of complex claudin-based interactomes and demonstrated that changes in such protein partnering can influence barrier integrity and communication between a cell and its environment to produce undesired outcome. Cell signaling is the process by which cells respond to their environment to make dynamic decisions to live, grow and proliferate, or die. Thus, pivotal role of the deregulated tight junction structure/function in influencing cellular signaling cascades to alter cellular phenotype can be envisaged, however, is not well understood. Needless to mention that advanced knowledge in this area can help improve therapeutic considerations and preventive measures. Here, we discuss potential role of the tight junction in the regulation of "outside-in" signaling to regulate cancer growth, with specific focus upon the claudin family of proteins.
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Affiliation(s)
- Amar B Singh
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA
- Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA
- VA Nebraska-Western Iowa Health Care System, Omaha, NE, USA
| | | | - Punita Dhawan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE, 68198-5870, USA.
- Buffet Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
- VA Nebraska-Western Iowa Health Care System, Omaha, NE, USA.
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Xu Y, Qiu M, Chen Y, Wang J, Xia W, Mao Q, Yang L, Li M, Jiang F, Xu L, Yin R. Long noncoding RNA, tissue differentiation-inducing nonprotein coding RNA is upregulated and promotes development of esophageal squamous cell carcinoma. Dis Esophagus 2016; 29:950-958. [PMID: 26833746 DOI: 10.1111/dote.12436] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Esophageal squamous cell carcinoma (ESCC) is one of the major causes of cancer death worldwide, especially in Eastern Asia. Due to the poor prognosis, it is necessary to further dissect the underlying mechanisms and explore therapeutic targets of ESCC. Recently, studies show that long noncoding RNAs (lncRNAs) have critical roles in diverse biological processes, including tumorigenesis. Increasing evidence indicates that some lncRNAs are widely involved in the development and progression of ESCC, such as HOTAIR, SPRY4-IT1 and POU3F3. An emerging lncRNA, tissue differentiation-inducing nonprotein coding RNA (TINCR), has been studied in human cutaneous squamous cell carcinoma and has critical biological function, but its role in ESCC remains unknown. Here, we evaluated the expression profile of TINCR and its biological function in ESCC. In a cohort of 56 patients, TINCR was significantly overexpressed in ESCC tissues compared with paired adjacent normal tissues. Further, in vitro silencing TINCR via small interfering RNA (siRNA) inhibited the proliferation, migration and invasion of ESCC cells. Meantime, siRNA treatment induced apoptosis and blocked the progression of cell cycle. Taken together, our study suggests that TINCR promotes proliferation, migration and invasion of ESCC cells, acting as a potential oncogene of ESCC.
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Affiliation(s)
- Y Xu
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China.,The First Clinical College of Nanjing Medical University, Nanjing, China
| | - M Qiu
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China.,The Fourth Clinical College of Nanjing Medical University, Nanjing, China
| | - Y Chen
- Department of Thoracic Surgery, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, China
| | - J Wang
- Department of Scientific Research, Nanjing Medical University, Affiliated Cancer Hospital, Cancer Institute of Jiangsu Province, Nanjing, China
| | - W Xia
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China.,The Fourth Clinical College of Nanjing Medical University, Nanjing, China
| | - Q Mao
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China.,The Fourth Clinical College of Nanjing Medical University, Nanjing, China
| | - L Yang
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China.,Department of General Surgery, Nanjing Medical University Affiliated Cancer Hospital, Cancer Institute of Jiangsu Province, Nanjing, China
| | - M Li
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China
| | - F Jiang
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China
| | - L Xu
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China
| | - R Yin
- Department of Thoracic Surgery, Nanjing Medical University Affiliated Cancer Hospital, Jiangsu Key Laboratory of Molecular and Translational Cancer Research, Cancer Institute of Jiangsu Province, Nanjing, China
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Osanai M, Takasawa A, Murata M, Sawada N. Claudins in cancer: bench to bedside. Pflugers Arch 2016; 469:55-67. [PMID: 27624415 DOI: 10.1007/s00424-016-1877-7] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 08/31/2016] [Accepted: 09/06/2016] [Indexed: 02/07/2023]
Abstract
The claudin family, in mammals, encoded by at least 27 members of a single ancestral gene, CLDN, is the main constituent as integral membrane proteins of tight junctions. It has been shown that the expression levels of claudins are often decreased or that their expressions are absent in human neoplasias. These findings are consistent with the well-accepted concept that carcinogenesis is accompanied by the disruption or loss of functional tight junctions. In contrast, accumulating data have showed elevated or aberrant expression of claudins in various cancers, indicating specific roles of claudins in tumorigenesis. Importantly, dysregulated claudins play an oncogenic role or conversely have a tumor-suppressive effect depending on target tissues or cell types, and thus, they contribute to tumor development and progression. Although tight junctions are intercellular structures in epithelial cells, specific roles of claudins in cancer are supported by the evidence that TJs are not simple static constituents for establishing cell adhesion structures but are also cell signaling components that have functions in receiving environmental cues and transmitting signals inside cells. Since the expression profile of claudins is associated with patients' outcome and prognosis in several cancer types, an understanding of the expression pattern and subcellular localization of claudins in various pathologies will lead to the establishment of claudins as useful biomarkers for the detection and diagnosis of cancers.
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Affiliation(s)
- Makoto Osanai
- Department of Pathology, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo, 060-8556, Japan.
| | - Akira Takasawa
- Department of Pathology, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Masaki Murata
- Department of Pathology, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo, 060-8556, Japan
| | - Norimasa Sawada
- Department of Pathology, Sapporo Medical University School of Medicine, South-1, West-17, Chuo-ku, Sapporo, 060-8556, Japan
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Kuo KT, Chen CL, Chou TY, Yeh CT, Lee WH, Wang LS. Nm23H1 mediates tumor invasion in esophageal squamous cell carcinoma by regulation of CLDN1 through the AKT signaling. Oncogenesis 2016; 5:e239. [PMID: 27376780 PMCID: PMC4972901 DOI: 10.1038/oncsis.2016.46] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 04/28/2016] [Accepted: 05/16/2016] [Indexed: 12/15/2022] Open
Abstract
Esophageal cancer is a lethal malignancy worldwide. Previously, low expression of metastasis suppressor Nm23H1 and tight junction (TJ) protein claudin-1 (CLDN1) have been known to correlate with poor prognosis in esophageal squamous cell carcinoma (ESCC). However, the molecular interaction between them has not been clarified. In the present study, we first examined the expression of Nm23H1 and CLDN1 in 74 surgical ESCC samples by immunohistochemistry (IHC) to verify their clinicopathologic significance. The biologic effects of Nm23H1 gene silencing or overexpression in ESCC cell lines were then studied by migration and invasion studies, and its regulation on CLDN1 expression was also investigated by western blot analysis. Moreover, the expression of Nm23H1 and CLDN1 at the same invasion front of ESCC tumors was verified by immunofluorescence. The results showed a significantly positive correlation between the expression of Nm23H1 and CLDN1 (γ=0.296, P=0.011) in surgical specimens, especially for the 34 tumors with lymph-node metastasis (γ=0.455, P=0.007). In ESCC cell lines, silencing of Nm23H1 expression markedly enhanced cell invasiveness, accompanied by increased Akt phosphorylation and decreased CLDN1 expression. Conversely, Nm23H1-expressed transfectants exhibited reduced invasiveness, decreased Akt phosphorylation and correspondingly increased CLDN1 expression. Regain of CLDN1 expression in ESCC cells significantly suppressed invasiveness, but did not influence the Akt phosphorylation. Moreover, treating Nm23H1-depleted cells with the AKT inhibitor MK2206 recovered CLDN1 expression, and diminished the invasiveness of ESCC cells. Finally, decreased expressions of both CLDN1 and E-cadherin were observed at the invasive front of the Nm23H1-negative tumors. Overall, our current study documented that reduced Nm23H1 expression activates the AKT signaling pathway, results in diminished CLDN1 expression and potentiates invasiveness of ESCC cells. Enhancement of Nm23H1 expression, inhibition of the AKT signaling pathway, or combined, might be a potential treatment strategy in selective ESCC patients.
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Affiliation(s)
- K-T Kuo
- Division of Thoracic Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Division of Thoracic Surgery, Department of Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - C-L Chen
- Translational Research Laboratory, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - T-Y Chou
- Department of Pathology and Laboratory Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - C-T Yeh
- Translational Research Laboratory, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - W-H Lee
- Department of Pathology, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan
| | - L-S Wang
- Division of Thoracic Surgery, Department of Surgery, Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
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Phattarataratip E, Sappayatosok K. Expression of claudin-5, claudin-7 and occludin in oral squamous cell carcinoma and their clinico-pathological significance. J Clin Exp Dent 2016; 8:e299-306. [PMID: 27398181 PMCID: PMC4930640 DOI: 10.4317/jced.52801] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 02/10/2016] [Indexed: 01/20/2023] Open
Abstract
Background Claudin and occludin are the important tight junctions protein in human. The downregulation or upregulation of claudins and occludin might have a role in cancer development. The objective of this study was to investigate the expression of claudin-5, claudin-7 and occludin in oral squamous cell carcinoma (OSCC) and their relationships with the prognostically-related clinico-pathologic features. Material and Methods Standard indirect immunohistochemical technique using anti-claudin-5, anti-claudin-7 and anti-occludin was performed in formalin-fixed paraffin-embedded tissue sections of 66 OSCC samples from Faculty of Dentistry, Chulalongkorn University. The positive cases were divided into 2 groups, the low expression group (cases with less than 50% of positive cancer cells) and the high expression group for statistical analysis. Categorical analysis of the clinico-pathologic parameters together with univariate analysis using the Kaplan-Meier method and the log rank test were performed. Results There were 22 male and 23 female patients enrolled in this study, with a mean age of 65.82+12.10 years. The claudin-5 immunoreactivity was observed in 26.6% of cases. The positive immunoreactivity of claudin-7 is more noted (93.3%). Only 4 cases showed occludin immunoreactivity (8.9%) and all of them show positivity less than 25% of cancer cells. Only loss of claudin-7 expression was associated with the high pathologic grade, advanced TNM staging, large tumor size, the presence of microscopic perineural, vascular invasions and regional lymph node involvement. There is a tendency towards the association of the higher claudin-7 expression and a longer survival time (P=0.012). Conclusions The results showed expression of claudin-5, claudin-7 and low expression of occludin in OSCC. Only claudin-7 expression showed impact on clinic-pathological parameter of OSCC. Key words:Claudin, occludin, oral squamous cell carcinoma, tight junctions, oral cancer.
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Affiliation(s)
- Ekarat Phattarataratip
- DDS, PhD, Assistant Professor. Department of Oral Pathology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
| | - Kraisorn Sappayatosok
- DDS, PhD, Assistant Professor. Faculty of Dental Medicine, Rangsit University, Thailand
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38
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PARP1 enhances lung adenocarcinoma metastasis by novel mechanisms independent of DNA repair. Oncogene 2016; 35:4569-79. [DOI: 10.1038/onc.2016.3] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 12/28/2015] [Accepted: 12/29/2015] [Indexed: 12/31/2022]
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39
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Hassanzadeh G, Hosseini Quchani S, Sahraian MA, Abolhassani F, Sadighi Gilani MA, Dehghan Tarzjani M, Atoof F. Leukocyte Gene Expression and Plasma Concentration in Multiple Sclerosis: Alteration of Transforming Growth Factor-βs, Claudin-11, and Matrix Metalloproteinase-2. Cell Mol Neurobiol 2016; 36:865-872. [PMID: 26768647 DOI: 10.1007/s10571-015-0270-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Accepted: 09/07/2015] [Indexed: 01/31/2023]
Abstract
Multiple sclerosis is a neurodegenerative disease characterized by the present of leukocytes in the brain tissue and subsequently the formation of sclerotic plaques. Leukocytes penetration into the blood-brain barrier is related to several factors, such as, the conversion of leukocyte gene expression or plasma characteristics. In this frame, we explore alteration of matrix metalloproteinase-2 (MMP-2), transforming growth factor beta (TGF-β) family, and Claudin-11 (as a main myelin structural protein) in leukocytes and blood plasma of multiple sclerosis patients compared to the normal group. Blood samples were collected from thirteen men affected by MS and fifteen healthy men. Leukocyte gene expression was measured using real-time PCR and plasma parameters were examined by ELISA. The results of this study showed that the gene expression of Claudin-11 was significantly higher in MS group compared with normal. Interestingly, the MMP-2 pattern was similar to Claudin-11 and correlated positively with it. It was observed that, although the expressions of TGF-β1 and TGF-β2 are down-regulated in the leukocytes of subjects with MS, they showed higher levels of these cytokines in blood plasma. The plasma level of TGF-β3 in MS patients was higher than normal and correlated with Claudin-11 concentration. In conclusion, the aberrant pattern of Claudin-11, TGF-βs family, and MMP-2 expression in leukocytes of the MS patients was observed in this study. Moreover, the plasma levels of TGF-βs family increased in the MS group. The findings of this study provide clues for further investigations to assay MS pathogenesis.
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Affiliation(s)
- Gholamreza Hassanzadeh
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Avenue, 1417613151, Tehran, Iran
| | - Samaneh Hosseini Quchani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Avenue, 1417613151, Tehran, Iran.
| | - Mohammad Ali Sahraian
- Department of Neurology, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Farid Abolhassani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Avenue, 1417613151, Tehran, Iran
| | | | - Masoomeh Dehghan Tarzjani
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Poursina Avenue, 1417613151, Tehran, Iran
| | - Fatemeh Atoof
- Department of Epidemiology and Biostatistics, Kashan University of Medical Sciences, Kashanan, Iran
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40
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Li XM, Wang H, Zhu LL, Zhao RZ, Ji HL. Genes Regulating Epithelial Polarity Are Critical Suppressors of Esophageal Oncogenesis. J Cancer 2015; 6:694-700. [PMID: 26185530 PMCID: PMC4504104 DOI: 10.7150/jca.11709] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 05/05/2015] [Indexed: 02/06/2023] Open
Abstract
Esophageal cancer is an aggressive disease featured by early lymphatic and hematogenous dissemination, and is the sixth leading cause of cancer-related deaths worldwide. The proper formation of apicobasal polarity is essential for normal epithelium physiology and tissue homeostasis, while loss of polarity is a hallmark of cancer development including esophageal oncogenesis. In this review, we summarized the stages of esophageal cancer development associated with the loss or deregulation of epithelial cell apicobasal polarity. Loss of epithelial apicobasal polarity exerts an indispensable role in the initiation of esophageal oncogenesis, tumor progression, and the advancement of tumors from benign to malignant. In particular, we reviewed the involvement of several critical genes, including Lkb1, claudin-4, claudin-7, Par3, Lgl1, E-cadherin, and the Scnn1 gene family. Understanding the role of apicobasal regulators may lead to new paradigms for treatment of esophageal tumors, including improvement of prognostication, early diagnosis, and individually tailored therapeutic interventions in esophageal oncology.
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Affiliation(s)
- Xiu-Min Li
- 1. Center for Cancer Research, Xinxiang Medical University, Xinxiang Henan, 453003, China
| | - Hui Wang
- 2. Ontario Cancer Institute, Campbell Family Institute for Breast Cancer Research, University of Toronto, Toronto, Ontario, M5G 2M9, Canada
| | - Li-Li Zhu
- 1. Center for Cancer Research, Xinxiang Medical University, Xinxiang Henan, 453003, China
| | - Run-Zhen Zhao
- 3. Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler, Tyler, Texas, 75708, USA
| | - Hong-Long Ji
- 3. Department of Cellular and Molecular Biology, University of Texas Health Science Center at Tyler, Tyler, Texas, 75708, USA ; 4. Texas Lung Injury Institute, University of Texas Health Science Center at Tyler, Tyler, Texas, 75708, USA
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Lee E, Moon JW, Wang X, Kim C, Li S, Shin BK, Jung W, Kim HK, Kim HK, Lee JY. Genomic Copy Number Signatures Uncovered a Genetically Distinct Group from Adenocarcinoma and Squamous Cell Carcinoma in Non-Small Cell Lung Cancer. Hum Pathol 2015; 46:1111-20. [PMID: 26003479 DOI: 10.1016/j.humpath.2015.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 04/21/2015] [Accepted: 04/24/2015] [Indexed: 01/04/2023]
Abstract
Adenocarcinoma (AC) and squamous cell carcinoma (SCC) of non-small cell lung carcinoma (NSCLC) have different clinical presentations, morphologies, treatments, and prognoses. Recent studies suggested that fundamental genetic alterations related to carcinogenesis of each tumor type may be different. In this study, we investigated the genomic alterations of 47 primary NSCLC samples (22 ACs and 25 SCCs) as well as the corresponding normal tissue using array comparative genomic hybridization. Frequent copy number alterations (CNAs), which were identified in more than 68% of all of the cases, were evaluated in each subtype (SCC and AC), and a CNA signature was established. Among these CNAs, 37 genes from the SCCs and 15 genes from the ACs were located in a region of gain, and 4 genes from the SCCs and 13 genes from the ACs were located in a region of loss. The most frequent gain was located on 3q26-29 including the gene TP63 in SCCs and 7q11.23 and 7q36.3 in ACs. Moreover, we identified 3 genetically distinct groups (group I [16 SCC] with CNA signature of SCC; group II [7 SCC + 8 AC], which has a genetically distinctive CNA signature from SCC and AC; and group III [2 SCC + 14 AC] with CNA signature of AC) by gene clustering extracted from CNAs, which are associated with a prognosis. The present study contributed to the molecular characterization of AC and SCC of NSCLC and showed a subtype of tumor that has a unique genetic CNA signature. However, further study about the significance of these 3 distinct groups and their usefulness as a diagnostic marker of identified CNAs is necessary.
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Affiliation(s)
- Eunjung Lee
- Department of Pathology, College of Medicine, Korea University Guro Hospital, Seoul, 152-703 South Korea; Department of Pathology, College of Medicine, Korea University, Seoul, 136-705 South Korea
| | - Ji Wook Moon
- Department of Pathology, College of Medicine, Korea University, Seoul, 136-705 South Korea
| | - Xianfu Wang
- Department of Pediatrics, College of Medicine, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Chungyeul Kim
- Department of Pathology, College of Medicine, Korea University Guro Hospital, Seoul, 152-703 South Korea
| | - Shibo Li
- Department of Pediatrics, College of Medicine, The University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Bong Kyung Shin
- Department of Pathology, College of Medicine, Korea University Guro Hospital, Seoul, 152-703 South Korea; Department of Pathology, College of Medicine, Korea University, Seoul, 136-705 South Korea
| | - Wonkyung Jung
- Department of Pathology, College of Medicine, Korea University Guro Hospital, Seoul, 152-703 South Korea
| | - Hyun Koo Kim
- Department of Thoracic and Cardiovascular Surgery, College of Medicine, Korea University Guro Hospital, Seoul, 152-703 South Korea
| | - Han Kyeom Kim
- Department of Pathology, College of Medicine, Korea University Guro Hospital, Seoul, 152-703 South Korea; Department of Pathology, College of Medicine, Korea University, Seoul, 136-705 South Korea.
| | - Ji-Yun Lee
- Department of Pathology, College of Medicine, Korea University, Seoul, 136-705 South Korea.
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Cao C, Wang W, Ma C, Jiang P. Computational analysis identifies invasion-associated genes in pituitary adenomas. Mol Med Rep 2015; 12:1977-82. [PMID: 25824863 DOI: 10.3892/mmr.2015.3564] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Accepted: 03/04/2015] [Indexed: 11/05/2022] Open
Abstract
Pituitary adenomas are considered to be benign tumours. However, they can infiltrate surrounding tissues, which may cause a failure of complete removal during surgical resection. Thus far, no molecular biomarkers have been identified, which are able to reliably predict the behaviour of this type of tumour. In the present study, a list of differentially expressed genes in invasive pituitary adenomas was obtained using a computational bioinformatics analysis on the DNA microarray expression profiles. The gene expression datasets of a total of 16 samples were retrieved from the National Center for Biotechnology Information Gene Expression Omnibus database. The gene set enrichment analysis was later conducted on the significantly (FDR<0.05) differentially expressed genes. A total of 194 genes were identified as differentially expressed. The pathway impact analysis revealed that cell adhesion molecules may be vital in the progression of pituitary adenoma invasion. A total of six genes, claudin 7, contactin associated protein-like 2, integrin α6, junctional adhesion molecule 3, protein tyrosine phosphatase, receptor type C and cadherin-associated protein α1 were identified as molecular biomarkers for pituitary adenoma invasion. The present study identified six novel molecular biomarkers, which may be used for diagnostic or therapeutic purposes. However, further experimental investigations are required to validate the present findings.
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Affiliation(s)
- Changjun Cao
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Wei Wang
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Chao Ma
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
| | - Pucha Jiang
- Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, P.R. China
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Claudin-7 expression induces mesenchymal to epithelial transformation (MET) to inhibit colon tumorigenesis. Oncogene 2014; 34:4570-80. [PMID: 25500541 DOI: 10.1038/onc.2014.385] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 09/12/2014] [Accepted: 10/13/2014] [Indexed: 12/12/2022]
Abstract
In normal colon, claudin-7 is one of the highly expressed claudin proteins and its knockdown in mice results in altered epithelial cell homeostasis and neonatal death. Notably, dysregulation of the epithelial homeostasis potentiates oncogenic transformation and growth. However, the role of claudin-7 in the regulation of colon tumorigenesis remains poorly understood. Using a large colorectal cancer (CRC) patient database and mouse models of colon cancer, we found claudin-7 expression to be significantly downregulated in cancer samples. Most notably, forced claudin-7 expression in poorly differentiated and highly metastatic SW620 colon cancer cells induced epithelial characteristics and inhibited their growth in soft agar and tumor growth in vivo. By contrast, knockdown of claudin-7 in HT-29 or DLD-1 cells induced epithelial-to-mesenchymal transition (EMT), colony formation, xenograft-tumor growth in athymic mice and invasion. Importantly, a claudin-7 signature gene profile generated by overlapping the DEGs (differentially expressed genes in a high-throughput transcriptome analysis using claudin-7-manipulated cells) with human claudin-7 signature genes identified high-risk CRC patients. Furthermore, Rab25, a colon cancer suppressor and regulator of the polarized cell trafficking constituted one of the highly upregulated DEGs in claudin-7 overexpressing cells. Notably, silencing of Rab25 expression counteracted the effects of claudin-7 expression and not only increased proliferation and cell invasion but also increased the expression of p-Src and mitogen-activated protein kinase-extracellular signal-regulated kinase 1/2 that were suppressed upon claudin-7 overexpression. Of interest, CRC cell lines, which exhibited decreased claudin-7 expression, also exhibited promoter DNA hypermethylation, a modification associated with transcriptional silencing. Taken together, our data demonstrate a previously undescribed role of claudin-7 as a colon cancer suppressor and suggest that loss of claudin-7 potentiates EMT to promote colon cancer, in a manner dependent on Rab25.
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44
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Liu Z, Lu Y, He Z, Chen L, Lu Y. Expression analysis of the estrogen receptor target genes in renal cell carcinoma. Mol Med Rep 2014; 11:75-82. [PMID: 25351113 PMCID: PMC4237094 DOI: 10.3892/mmr.2014.2766] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Accepted: 07/04/2014] [Indexed: 02/05/2023] Open
Abstract
The aim of the present study was to investigate the differentially expressed genes (DEGs) and target genes of the estrogen receptor (ER) in renal cell carcinoma. The data (GSE12090) were downloaded from the gene expression omnibus database. Data underwent preprocessing using the affy package for Bioconductor software, then the DEGs were selected via the significance analysis of microarray algorithm within the siggenes package. Subsequently, the DEGs underwent functional and pathway enrichment analysis using Database for Annotation Visualization and Integrated Discovery software. Following data analysis, transcriptional regulatory networks between the DEGs and transcription factors were constructed. Finally, the ER target genes were subjected to gene ontology enrichment analysis. A total of 215 DEGs were identified between the chromophobe renal cell carcinoma samples and the oncocytoma samples, including 126 upregulated and 89 downregulated genes. Functional enrichment analysis indicated that 25% of the DEGs were significantly enriched in functions associated with the plasma membrane. Among those DEGs, 105 were regulated by the ER. Further regulatory network analysis indicated that the ER was mainly involved in the regulation of oncogenes and tumor suppressor genes, including protease serine 8, claudin 7 and Ras-related protein Rab-25. In the present study, the identified ER target genes were demonstrated to be closely associated with tumor development; this knowledge may improve the understanding of the ER regulatory mechanisms during tumor development and promote the discovery of predictive markers for renal cell carcinoma.
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Affiliation(s)
- Zhihong Liu
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - You Lu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Zonghai He
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Libo Chen
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Yiping Lu
- Department of Urology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Fan C, Miao Y, Zhang X, Liu D, Jiang G, Lin X, Han Q, Luan L, Xu Z, Wang E. Btbd7 contributes to reduced E-cadherin expression and predicts poor prognosis in non-small cell lung cancer. BMC Cancer 2014; 14:704. [PMID: 25253020 PMCID: PMC4189533 DOI: 10.1186/1471-2407-14-704] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Accepted: 09/16/2014] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Disorders of cell adhesion are critical steps in cancer progression in which varieties of markers including cadherins are involved in.Btbd7 was found to inhibit E-cadherin expression in MDCK cells and play important roles during branching morphogenesis of embryonic salivary glands and lungs. However its function in malignant tumors is largely unknown. The aim of this study is to investigate the clinicopathological significance and possible function of Btbd7 in non-small cell lung cancer. METHODS Immunohistochemistry and Western blotting were used to investigate Btbd7 expression in non-small cell lung cancer and lung tissues. The clinicopathological association and the overall survival was analyzed. In vitro experiments were performed using siRNA to investigate the function of Btbd7 in lung cancer cells. RESULTS Btbd7 expression was elevated in non-small cell lung cancer tissues compared to normal lung tissues. Increased Btbd7 expression was significantly associated with lymph node metastasis, reduced E-cadherin expression and patients' poor clinical outcome. Downregulation of Btbd7 expression in lung cancer cells by siRNA significantly inhibits cancer cell invasion and effectively restores E-cadherin expression in cancer cell membrane. CONCLUSIONS Btbd7 contributes to reduced expression of E-cadherin and may be a promising cancer marker in non-small cell lung cancer.
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Affiliation(s)
- Chuifeng Fan
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Yuan Miao
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Xiupeng Zhang
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Di Liu
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Guiyang Jiang
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Xuyong Lin
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Qiang Han
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Lan Luan
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Zhonghai Xu
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
| | - Enhua Wang
- />Department of Pathology, First Affiliated Hospital and College of Basic Medical Sciences of China Medical University, Shenyang, 110001 China
- />Institute of Pathology and Pathophysiology, China Medical University, Shenyang, 110001 China
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González-Mariscal L, Domínguez-Calderón A, Raya-Sandino A, Ortega-Olvera JM, Vargas-Sierra O, Martínez-Revollar G. Tight junctions and the regulation of gene expression. Semin Cell Dev Biol 2014; 36:213-23. [PMID: 25152334 DOI: 10.1016/j.semcdb.2014.08.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 07/23/2014] [Accepted: 08/13/2014] [Indexed: 01/21/2023]
Abstract
Tight junctions (TJ) regulate the paracellular passage of ions and molecules through the paracellular pathway and maintain plasma membrane polarity in epithelial and endothelial cells. Apart from these canonical functions, several proteins of the TJ have been found in recent years to regulate gene expression. This function is found in proteins that shuttle between the nucleus and TJs, and in integral TJ proteins. In this review, we will describe these proteins and their known mechanisms of gene regulation.
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Affiliation(s)
- Lorenza González-Mariscal
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, México, D.F., Mexico.
| | - Alaide Domínguez-Calderón
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, México, D.F., Mexico
| | - Arturo Raya-Sandino
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, México, D.F., Mexico
| | - José Mario Ortega-Olvera
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, México, D.F., Mexico
| | - Orlando Vargas-Sierra
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, México, D.F., Mexico
| | - Gabriela Martínez-Revollar
- Center for Research and Advanced Studies (Cinvestav), Department of Physiology, Biophysics and Neuroscience, México, D.F., Mexico
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Steinestel K, Eder S, Schrader AJ, Steinestel J. Clinical significance of epithelial-mesenchymal transition. Clin Transl Med 2014; 3:17. [PMID: 25050175 PMCID: PMC4094902 DOI: 10.1186/2001-1326-3-17] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 06/27/2014] [Indexed: 12/21/2022] Open
Abstract
The concept of epithelial-mesenchymal transition (EMT), a process where cells change their epithelial towards a mesenchymal phenotype, has gained overwhelming attention especially in the cancer research community. Thousands of scientific reports investigated changes in gene, mRNA and protein expression compatible with EMT and their possible correlation with tumor invasion, metastatic spread or patient prognosis; however, up to now, a proof of clinical significance of the concept is still missing. This review, with a main focus on the role of EMT in tumors, will summarize the basic molecular events underlying EMT including the signaling pathways capable of its induction as well as changes in EMT-associated protein expression and will very briefly touch the role of microRNAs in EMT. We then outline protein markers that are used most frequently for the assessment of EMT in research and diagnostic evaluation of tumor specimens and depict the link between EMT, a cancer stem cell (CSC) phenotype and resistance to conventional antineoplastic therapies. Furthermore, we evaluate a possible correlation between EMT marker expression and patient prognosis as well as current therapeutic concepts targeting the EMT process to slow down or prevent metastatic spread of malignant tumors.
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Affiliation(s)
- Konrad Steinestel
- Bundeswehr Institute of Radiobiology, Neuherbergstrasse 11, Munich 80937, Germany
- Institute of Pathology and Molecular Pathology, Bundeswehrkrankenhaus Ulm, Oberer Eselsberg 40, Ulm 89081, Germany
| | - Stefan Eder
- Bundeswehr Institute of Radiobiology, Neuherbergstrasse 11, Munich 80937, Germany
| | - Andres Jan Schrader
- Department of Urology, Ulm University Medical Center, Prittwitzstrasse 43, Ulm 89075, Germany
| | - Julie Steinestel
- Department of Urology, Ulm University Medical Center, Prittwitzstrasse 43, Ulm 89075, Germany
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Bongers G, Pacer ME, Geraldino TH, Chen L, He Z, Hashimoto D, Furtado GC, Ochando J, Kelley KA, Clemente JC, Merad M, van Bakel H, Lira SA. Interplay of host microbiota, genetic perturbations, and inflammation promotes local development of intestinal neoplasms in mice. ACTA ACUST UNITED AC 2014; 211:457-72. [PMID: 24590763 PMCID: PMC3949565 DOI: 10.1084/jem.20131587] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The preferential localization of some neoplasms, such as serrated polyps (SPs), in specific areas of the intestine suggests that nongenetic factors may be important for their development. To test this hypothesis, we took advantage of transgenic mice that expressed HB-EGF throughout the intestine but developed SPs only in the cecum. Here we show that a host-specific microbiome was associated with SPs and that alterations of the microbiota induced by antibiotic treatment or by embryo transfer rederivation markedly inhibited the formation of SPs in the cecum. Mechanistically, development of SPs was associated with a local decrease in epithelial barrier function, bacterial invasion, production of antimicrobials, and increased expression of several inflammatory factors such as IL-17, Cxcl2, Tnf-α, and IL-1. Increased numbers of neutrophils were found within the SPs, and their depletion significantly reduced polyp growth. Together these results indicate that nongenetic factors contribute to the development of SPs and suggest that the development of these intestinal neoplasms in the cecum is driven by the interplay between genetic changes in the host, an inflammatory response, and a host-specific microbiota.
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Morgan C, Jenkins SA, Kynaston HG, Doak SH. The role of adhesion molecules as biomarkers for the aggressive prostate cancer phenotype. PLoS One 2013; 8:e81666. [PMID: 24358122 PMCID: PMC3864842 DOI: 10.1371/journal.pone.0081666] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 10/17/2013] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Currently available methods for diagnosis and staging of prostate cancer lack the sensitivity to distinguish between patients with indolent prostate cancer and those requiring radical treatment. Alterations in key adherens (AJ) and tight junction (TJ) components have been hailed as potential biomarkers for prostate cancer progression but the majority of research has been carried out on individual molecules. OBJECTIVE To elucidate a panel of biomarkers that may help distinguish dormant prostate cancer from aggressive metastatic disease. METHODS We analysed the expression of 7 well known AJ and TJ components in cell lines derived from normal prostate epithelial tissue (PNT2), non-invasive (CAHPV-10) and invasive prostate cancer (LNCaP, DU145, PC-3) using gene expression, western blotting and immunofluorescence techniques. RESULTS Claudin 7, α -catenin and β-catenin protein expression were not significantly different between CAHPV-10 cells and PNT2 cells. However, in PC-3 cells, protein levels for claudin 7, α -catenin were significantly down regulated (-1.5 fold, p = <.001) or undetectable respectively. Immunofluoresence showed β-catenin localisation in PC-3 cells to be cytoplasmic as opposed to membraneous. CONCLUSION These results suggest aberrant Claudin 7, α - and β-catenin expression and/or localisation patterns may be putative markers for distinguishing localised prostate cancer from aggressive metastatic disease when used collectively.
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Affiliation(s)
- Claire Morgan
- Cancer Biomarkers Group, Institute of Life Science, College of Medicine, Swansea University, Swansea, United Kingdom
- * E-mail:
| | - Spencer A. Jenkins
- Department of Urology, University Hospital of Wales, Heath Park, Cardiff, United Kingdom
| | - Howard G. Kynaston
- Department of Urology, University Hospital of Wales, Heath Park, Cardiff, United Kingdom
| | - Shareen H. Doak
- Cancer Biomarkers Group, Institute of Life Science, College of Medicine, Swansea University, Swansea, United Kingdom
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Goldenring JR. A central role for vesicle trafficking in epithelial neoplasia: intracellular highways to carcinogenesis. Nat Rev Cancer 2013; 13:813-20. [PMID: 24108097 PMCID: PMC4011841 DOI: 10.1038/nrc3601] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Epithelial cell carcinogenesis involves the loss of cell polarity, alteration of polarized protein presentation, dynamic cell morphology changes, increased proliferation, and increased cell motility and invasion. Membrane vesicle trafficking underlies all of these processes. Specific membrane trafficking regulators, including RAB small GTPases, through the coordinated dynamics of intracellular trafficking along cytoskeletal pathways, determine the cell surface presentation of proteins and the overall function of both differentiated and neoplastic cells. Although mutations in vesicle trafficking proteins may not be direct drivers of transformation, components of the machinery of vesicle movement have crucial roles in the phenotypes of neoplastic cells. Therefore, the regulators of membrane vesicle trafficking decisions are essential mediators of the full range of cell physiologies that drive cancer cell biology, including initial loss of cell polarity, invasion and metastasis. Targeting of these fundamental intracellular processes may permit the manipulation of cancer cell behaviour.
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Affiliation(s)
- James R Goldenring
- Departments of Surgery and Cell and Developmental Biology, Epithelial Biology Center and the Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, Tennessee 37232, USA; and the Nashville Veternas Affairs Medical Center, Nashville, Tennessee 37212, USA
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