title: Dissecting the diverse functions of the metastasis suppressor CD82/KAI1.
abstract: The recent identification of metastasis suppressor genes, the products of which inhibit metastasis but not primary tumor growth, distinguishes oncogenic transformation and tumor suppression from a hallmark of malignancy, the ability of cancer cells to invade sites distant from the primary tumor. The metastasis suppressor CD82/KAI1 is a member of the tetraspanin superfamily of glycoproteins. CD82 suppresses metastasis by multiple mechanisms including inhibition of cell motility and invasion, promotion of cell polarity as well as induction of senescence and apoptosis in response to extracellular stimuli. A common feature of these diverse effects is CD82 regulation of membrane organization as well as protein trafficking and interactions, which affects cellular signaling and intercellular communication.
authors.affiliation: Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Cancer Institute, Frederick, MD 21702, United States. tsaiyien@mail.nih.gov
authors.forename: Yien Che
authors.initials: YC
authors.lastname: Tsai
authors.forename: Allan M
authors.initials: AM
authors.lastname: Weissman
mesh_terms: D000818:Animals; D017209:Apoptosis; D002450:Cell Communication; D002462:Cell Membrane / Q000235:genetics / Q000378:metabolism / Q000473:pathology; D002465:Cell Movement; D016764:Cell Polarity; D016922:Cellular Senescence; D006801:Humans; D051861:Kangai-1 Protein / Q000235:genetics / Q000378:metabolism*; D009361:Neoplasm Invasiveness; D009362:Neoplasm Metastasis; D021381:Protein Transport; D015398:Signal Transduction
chemical_list: C497688:CD82 protein, human; D051861:Kangai-1 Protein