Activation of MAP kinase by the LHRH receptor through a dual mechanism involving protein kinase C and a pertussis toxin-sensitive G protein.

Abstract:

:The LHRH receptor in alpha T3-1 gonadotrope cells was shown to bring about a marked and sustained activation of MAP kinase. This response was prevented by protein kinase C inhibition or down-regulation and could be partially mimicked by phorbol ester. Additional evidence for inhibition of this response by pertussis toxin and partial mimicry by mastoparan (in a pertussis toxin-sensitive manner) provides the first evidence for Gi/Go-mediated signal transduction by the LHRH receptor. This dual mechanism of MAP kinase activation appears to be exceptional amongst the G protein-linked receptors that have been investigated.

journal_name

Mol Cell Endocrinol

authors

Sim PJ,Wolbers WB,Mitchell R

doi

10.1016/0303-7207(95)03616-f

subject

Has Abstract

pub_date

1995-08-11 00:00:00

pages

257-63

issue

2

eissn

0303-7207

issn

1872-8057

pii

030372079503616F

journal_volume

112

pub_type

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