Title : Activation of the Ras-ERK pathway inhibits retinoic acid-induced stimulation of tissue transglutaminase expression in NIH3T3 cells.

Pub. Date : 2003 May 2

PMID : 12604597






4 Functional Relationships(s)
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1 Activation of the Ras-ERK pathway inhibits retinoic acid-induced stimulation of tissue transglutaminase expression in NIH3T3 cells. Tretinoin mitogen-activated protein kinase 1 Mus musculus
2 Activation of the Ras-ERK pathway by EGF was sufficient to elicit this effect, since continuous Ras signaling mimicked the actions of EGF and inhibited RA-induced TGase expression, whereas blocking ERK activity in these same cells restored the ability of RA to up-regulate TGase expression. Tretinoin mitogen-activated protein kinase 1 Mus musculus
3 Activation of the Ras-ERK pathway by EGF was sufficient to elicit this effect, since continuous Ras signaling mimicked the actions of EGF and inhibited RA-induced TGase expression, whereas blocking ERK activity in these same cells restored the ability of RA to up-regulate TGase expression. Tretinoin mitogen-activated protein kinase 1 Mus musculus
4 These findings demonstrate that TGase may serve as a survival factor and RA-induced TGase expression requires the activation of PI3K but is antagonized by the Ras-ERK pathway. Tretinoin mitogen-activated protein kinase 1 Mus musculus