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cAMP activates MAP kinase and Elk-1 through a B-Raf- and Rap1-dependent pathway

cAMP activates MAP kinase and Elk-1 through a B-Raf- and Rap1-dependent pathway CELL Vossler, M. R., Yao, H., York, R. D., Pan, M. G., Rim, C. S., Stork, P. J. 1997; 89 (1): 73-82

Abstract

Cyclic adenosine monophosphate (cAMP) has tissue-specific effects on growth, differentiation, and gene expression. We show here that cAMP can activate the transcription factor Elk-1 and induce neuronal differentiation of PC12 cells via its activation of the MAP kinase cascade. These cell type-specific actions of cAMP require the expression of the serine/threonine kinase B-Raf and activation of the small G protein Rap1. Rap1, activated by mutation or by the cAMP-dependent protein kinase PKA, is a selective activator of B-Raf and an inhibitor of Raf-1. Therefore, in B-Raf-expressing cells, the activation of Rap1 provides a mechanism for tissue-specific regulation of cell growth and differentiation via MAP kinase.

View details for DOI 10.1016/S0092-8674(00)80184-1

View details for Web of Science ID A1997WR68500011

View details for PubMedID 9094716