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- W2029973586 abstract "No AccessJournal of UrologyInvestigative Urology1 May 2011Toll-Like Receptors in Normal and Malignant Human Bladders Cherifa Ayari, Alain Bergeron, Hélène LaRue, Claire Ménard, and Yves Fradet Cherifa AyariCherifa Ayari More articles by this author , Alain BergeronAlain Bergeron More articles by this author , Hélène LaRueHélène LaRue More articles by this author , Claire MénardClaire Ménard More articles by this author , and Yves FradetYves Fradet More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2010.12.097AboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract Purpose: Toll-like receptors have a major role in the innate immune response. They are expressed by immune cells and some epithelial cells. To study the role of urothelial cells in the intrabladder innate immune response we analyzed toll-like receptor expression and functionality in normal and malignant urothelial cells. Materials and Methods: Toll-like receptor 1 to 10 mRNA expression was analyzed using reverse transcriptase-polymerase chain reaction in 4 primary cultures of normal urothelium and 15 bladder cancer cell lines. Immunohistochemistry was used to detect toll-like receptor expression in 11 normal urothelial samples and 26 bladder tumors. Proinflammatory cytokine secretion by toll-like receptor agonist or bacillus Calmette-Guérin treated cultured cells was assessed by enzyme-linked immunosorbent assay. Mitogen-activated protein kinase phosphorylation was analyzed by Western blot and nuclear factor-κB localization was assessed by confocal microscopy. Results: Expression of most toll-like receptor mRNA was detected in cultured normal or tumor urothelial cells. Expression of toll-like receptors 2 to 4, 5, 7 and 9 protein was detected in all normal urothelial samples and most nonmuscle invasive tumors, although its intensity was decreased in the latter. Expression was markedly decreased in muscle invasive tumors. Treatment with toll-like receptor 2 and 3 agonists showed the strongest inflammatory response in 2 primary cultures of normal urothelial cells and 3 bladder cancer cell lines. Toll-like receptor 2 and 3 functionality was confirmed by the nuclear translocation of nuclear factor-κB and the induction of phosphorylated c-Jun N-terminal kinase mitogen-activated protein-kinase. Conclusions: Toll-like receptors are expressed in normal urothelium and nonmuscle invasive bladder tumors. In cultured urothelial cells agonist inducible toll-like receptor 2 or constitutively expressed toll-like receptor 3 is functional. These data suggest the potential use of toll-like receptor agonists for antitumor immunotherapy of nonmuscle invasive tumors. 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Google Scholar Centre de Recherche en Cancérologie de l'Université Laval, Centre Hospitalier Universitaire de Québec-L'Hôtel-Dieu de Québec, Ville de Québec, Québec, Canada© 2011 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 185Issue 5May 2011Page: 1915-1921 Advertisement Copyright & Permissions© 2011 by American Urological Association Education and Research, Inc.Keywordsimmunotherapytoll-like receptorsurotheliumurinary bladder neoplasmsurinary bladderAcknowledgmentsDr. Bernard Têtu, Department of Pathology, Centre Hospitalier Universitaire de Québec, provided FFPE tumor tissue. The Quebec Transplant personnel coordinated the tissue donations.MetricsAuthor Information Cherifa Ayari More articles by this author Alain Bergeron More articles by this author Hélène LaRue More articles by this author Claire Ménard More articles by this author Yves Fradet More articles by this author Expand All Advertisement PDF downloadLoading ..." @default.
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