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Cell death regulation by Akt and Mdm2 Yoko Ogawara 1 , Yukiko Gotoh 1 1Institute of Molecular and Cellular Biosciences, University of Tokyo. Keyword: Akt , Mdm2 , p53 pp.119-124
Published Date 2004/2/10
DOI https://doi.org/10.11477/mf.1431100185
  • Abstract
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 The tumor suppressor p53 is activated in response to DNA damage, resulting in cell cycle arrest and apoptosis. These responses aim to prevent damaged cells from proliferating and passing mutations on to the next generations. Under normal cellular conditions, p53 is constantly degraded by Mdm2, an ubiquitin ligase for p53, and is therefore present at low levels. Our and other groups have recently shown that the serine threonine kinase Akt enhances the ubiquitination-promoting function of Mdm2 by phosphorylation, which results in reduction of p53 protein. Mdm2-mediated degradation of p53might contribute to the survival-promoting activity of Akt. We also discuss p53-independent targets of Mdm2.

(Received:October 16, 2003)


Copyright © 2004, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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