Fiche publication
Date publication
février 2004
Auteurs
Membres identifiés du Cancéropôle Est :
Dr WASYLYK Bohdan
Tous les auteurs :
Nakade K, Zheng H, Ganguli G, Buchwalter G, Gross C, Wasylyk B
Lien Pubmed
Résumé
The tumor suppressor function of p53 is linked to its ability to repress gene expression, but the mechanisms of specific gene repression are poorly understood. We report that wild-type p53 inhibits an effector of the Ras oncogene/mitogen-activated protein (MAP) kinase pathway, the transcription factor Net. Tumor-associated mutant p53s are less efficient inhibitors. p53 inhibits by preventing phosphorylation of Net by MAP kinases. Loss of p53 in vivo leads to increased Net phosphorylation in response to wound healing and UV irradiation of skin. Our results show that p53 can repress specific gene expression by inhibiting Net, a factor implicated in cell cycle entry.
Référence
Mol Cell Biol. 2004 Feb;24(3):1132-42.
