title: [Integrins, cell response to anti-tumor agents and chemoresistance].
abstract: Integrins are a family of heterodimeric transmembrane receptors that mediate cell-cell and cell-extracellular matrix adhesion. Integrin-mediated signaling is essential for the regulation of fundamental cellular functions, including proliferation and survival, and for tumor development. According to in vitro studies, integrin ligation by extracellular matrix proteins can modulate the cytotoxicity of anti-tumor agents, in a cell-type sensitive manner. Underlying molecular mechanisms are not well understood, but may be based on the interrelations between integrin signaling pathways and pathways that control cell cycle and apoptosis. On the other hand, alterations of integrin expression and/or function have been observed during the acquisition of chemoresistance in cells chronically exposed to cytotoxic agents. These data are in favor of a role of integrins in chemoresistance processes, and open new perspectives in the field of cancer therapy and prognosis.
authors.affiliation: Groupe régional d'études sur le cancer, EA 1772 de l'université de Caen, Laboratoire de cancérologie expérimentale, Centre de lutte contre le cancer François-Baclesse, route de Lion-sur-Mer, 14076 Caen Cedex 05, France.
authors.forename: Sylvie
authors.initials: S
authors.lastname: Maubant
authors.forename: Cathy
authors.initials: C
authors.lastname: Staedel
authors.forename: Pascal
authors.initials: P
authors.lastname: Gauduchon
mesh_terms: D000970:Antineoplastic Agents / Q000378:metabolism* / Q000494:pharmacology; D017209:Apoptosis / Q000187:drug effects / Q000502:physiology*; D002448:Cell Adhesion / Q000502:physiology; D002450:Cell Communication / Q000502:physiology; D002453:Cell Cycle / Q000502:physiology; D018432:Drug Resistance, Multiple; D019008:Drug Resistance, Neoplasm / Q000502:physiology*; D016326:Extracellular Matrix Proteins / Q000502:physiology*; D051417:Focal Adhesion Kinase 1; D051416:Focal Adhesion Protein-Tyrosine Kinases; D006801:Humans; D016023:Integrins / Q000502:physiology*; D009363:Neoplasm Proteins / Q000502:physiology*; D009369:Neoplasms / Q000188:drug therapy / Q000378:metabolism* / Q000473:pathology; D011505:Protein-Tyrosine Kinases / Q000378:metabolism; D019253:Proto-Oncogene Proteins c-bcl-2 / Q000378:metabolism; D015398:Signal Transduction; D016159:Tumor Suppressor Protein p53 / Q000502:physiology
chemical_list: D000970:Antineoplastic Agents; D016326:Extracellular Matrix Proteins; D016023:Integrins; D009363:Neoplasm Proteins; D019253:Proto-Oncogene Proteins c-bcl-2; D016159:Tumor Suppressor Protein p53; D011505:Protein-Tyrosine Kinases; D051417:Focal Adhesion Kinase 1; D051416:Focal Adhesion Protein-Tyrosine Kinases; C496050:PTK2 protein, human