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- W2044332414 abstract "No AccessJournal of UrologyINVESTIGATIVE UROLOGY1 Sep 2000EXPRESSION OF E-, P-, N-CADHERINS AND CATENINS IN HUMAN BLADDER CARCINOMA CELL LINES AGNÉS MIALHE, GÉRALDINE LEVACHER, PIERRE CHAMPELOVIER, VÉRONIQUE MARTEL, MIREILLE SERRES, KAREN KNUDSEN, and DANIEL SEIGNEURIN AGNÉS MIALHEAGNÉS MIALHE More articles by this author , GÉRALDINE LEVACHERGÉRALDINE LEVACHER More articles by this author , PIERRE CHAMPELOVIERPIERRE CHAMPELOVIER More articles by this author , VÉRONIQUE MARTELVÉRONIQUE MARTEL More articles by this author , MIREILLE SERRESMIREILLE SERRES More articles by this author , KAREN KNUDSENKAREN KNUDSEN More articles by this author , and DANIEL SEIGNEURINDANIEL SEIGNEURIN More articles by this author View All Author Informationhttps://doi.org/10.1016/S0022-5347(05)67322-3AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: Cadherins are cell surface glycoproteins that mediate Ca2+-dependent, homophilic cell-cell adhesion. The classical cadherins, E-, P- and N-cadherins, are known to self-associate from their extracellular domain, while their cytoplasmic domain interacts with either β-catenin or plakoglobin (γ-catenin), which in turn is bound to α-catenin that links the complex to the actin cytoskeleton. The aim of the present study was to analyze the expression of E-, P- and N-cadherins and catenins in human bladder carcinoma cells. Materials and Methods: Five human bladder carcinoma cell lines, representing a variety of differentiation states, were grown in cell culture. We performed a cell aggregation assay, specific for biological cadherin activity. The expression of cadherins and catenins was analyzed by immunocytochemistry, Western blotting and RT-PCR. The interactions between cadherins and catenins were assessed by immunoprecipitation. Results: We observed a reduced E-cadherin expression in the poorly differentiated and invasive-tumor derived cells. Interestingly, immunofluorescence study reveals the persistent localization of catenins at intercellular contacts in two E-cadherin deficient cell lines (T24 and TCCSUP) which yet exhibit an epithelial-like morphology and a calcium-dependent adhesive capacity. This suggests that other cadherin(s) are expressed in these both cell lines. P-cadherin, another epithelial cadherin, is expressed only in E-cadherin positive cells. On the other hand, N-cadherin is present at cell-cell borders in the very anaplastic cell lines, T24 and TCCSUP, and is able to link β-catenin or plakoglobin. Conclusion: These results indicate that N-cadherin may participate in intercellular adhesion, while facilitating bladder tumorigenesis. References 1 : Cadherin cell adhesion receptors as a morphogenetic regulator. Science1991; 251: 1451. Crossref, Medline, Google Scholar 2 : The cadherins: cell-cell adhesion molecules controlling animal morphogenesis. Development1988; 102: 639. 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Google Scholar 33 : Differential localization of VE- and N-cadherins in human endothelial cells: VE-cadherin competes with N-cadherin for junctional localization. J Cell Biol1998; 140: 1475. Google Scholar 34 : A role for cadherins in cellular signaling and differentiation. J Cell Biochem1998; 31: 168. Google Scholar 35 : A role for the FGF receptor in the axonal growth response stimulated by cell adhesion molecules?. Cell Adhes Comm1996; 3: 441. Google Scholar 36 : N-cadherin promotes motility in human breast cancer cells regardless of their E-cadherin expression. J Cell Biol1999; 147: 631. Google Scholar From the Laboratory of Cell Migration and Tumoral Invasion, Research Group on Bladder Tumors, Albert Bonniot Institute, Joseph-Fourier University, the Department of Cytology, University Hospital of Grenoble, Grenoble, France, and UMR CNRS/UJF 5538, LEDAC, Albert Bonniot Institute, Joseph-Fourier University, Grenoble, France, INSERM U346, Department of Dermatology, E. Herriot Hospital, Lyon, France, and the Lankenau Medical Research Center, Wynnewood, Pennsylvania© 2000 by American Urological Association, Inc.FiguresReferencesRelatedDetails Volume 164Issue 3 Part 1September 2000Page: 826-835 Advertisement Copyright & Permissions© 2000 by American Urological Association, Inc.KeywordscateninsE-cadherinbladder cancerN-cadherinP-cadherinMetricsAuthor Information AGNÉS MIALHE More articles by this author GÉRALDINE LEVACHER More articles by this author PIERRE CHAMPELOVIER More articles by this author VÉRONIQUE MARTEL More articles by this author MIREILLE SERRES More articles by this author KAREN KNUDSEN More articles by this author DANIEL SEIGNEURIN More articles by this author Expand All Advertisement PDF downloadLoading ..." @default.
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