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A prosurvival function for the p75 receptor death domain mediated via the caspase recruitment domain receptor-interacting protein 2.
Khursigara, G; Bertin, J; Yano, H; Moffett, H; DiStefano, P S; Chao, M V.
Afiliación
  • Khursigara G; Weill Medical College of Cornell University, New York, New York 10021, USA.
J Neurosci ; 21(16): 5854-63, 2001 Aug 15.
Article en En | MEDLINE | ID: mdl-11487608
ABSTRACT
In addition to promoting cell survival, neurotrophins also can elicit apoptosis in restricted cell types. Recent results indicate that nerve growth factor (NGF) can induce Schwann cell death via engagement of the p75 neurotrophin receptor. Here we describe a novel interaction between the p75 receptor and receptor-interacting protein 2, RIP2 (RICK/CARDIAK), that accounts for the ability of neurotrophins to choose between a survival-versus-death pathway. RIP2, an adaptor protein with a serine threonine kinase and a caspase recruitment domain (CARD), is highly expressed in dissociated Schwann cells and displays an endogenous association with p75. RIP2 binds to the death domain of p75 via its CARD domain in an NGF-dependent manner. The introduction of RIP2 into Schwann cells deficient in RIP2 conferred NGF-dependent nuclear transcription factor-kappaB (NF-kappaB) activity and decreased the cell death induced by NGF. Conversely, the expression of a dominant-negative version of RIP2 protein resulted in a loss of NGF-induced NF-kappaB induction and increased NGF-mediated cell death. These results indicate that adaptor proteins like RIP2 can provide a bifunctional switch for cell survival or cell death decisions mediated by the p75 neurotrophin receptor.
Asunto(s)

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Receptores de Factor de Crecimiento Nervioso / Proteínas Serina-Treonina Quinasas / Caspasas Tipo de estudio: Prognostic_studies Idioma: En Revista: J Neurosci Año: 2001 Tipo del documento: Article

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Receptores de Factor de Crecimiento Nervioso / Proteínas Serina-Treonina Quinasas / Caspasas Tipo de estudio: Prognostic_studies Idioma: En Revista: J Neurosci Año: 2001 Tipo del documento: Article