Journal
FEBS LETTERS
Volume 484, Issue 3, Pages 189-193Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0014-5793(00)02153-0
Keywords
cyclic AMP; forskolin; immediate early gene; mitogen-activated protein kinase phosphatase; pituitary adenylyl cyclase-activating polypeptide; PC12 cell
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Stimulation of pheochromocytoma PC12 cells by cAMP-elevating agents caused the induction of the immediate early gene 3CH134, which encodes MAP kinase phosphatase-1 (MKP-1). Forskolin was as potent as serum in stimulating MKP-1 gene expression, whereas dibutyryl-cAMP and neuropeptide PACAP were less effective, Induction of the MKP-1 gene was accompanied by neo-synthesis of MKP-1 protein. MAP kinase activation was not involved in the caMP-induced MKP-1 gene expression, The MAP kinase inactivation, that would result from MKP-1 induction in response to increased intracellular cAMP level, contributes to explain how hormones or neurotransmitters signaling through cAMP influence cell growth and differentiation. (C) 2000 Federation of European Biochemical Societies. Published by Elsevier Science B.V. All rights reserved.
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