IMR Press / FBL / Volume 16 / Issue 2 / DOI: 10.2741/3717

Frontiers in Bioscience-Landmark (FBL) is published by IMR Press from Volume 26 Issue 5 (2021). Previous articles were published by another publisher on a subscription basis, and they are hosted by IMR Press on imrpress.com as a courtesy and upon agreement with Frontiers in Bioscience.

Open Access Article
Micromanagement of the mitochondrial apoptotic pathway by p53
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1 Department of Pharmacology and Simmons Cancer Institute, Southern Illinois University School of Medicine, Springfield, Illinois 62794, USA
2 Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa 50011
Academic Editor:Kounosuke Watabe
Front. Biosci. (Landmark Ed) 2011, 16(2), 749–758; https://doi.org/10.2741/3717
Published: 1 January 2011
(This article belongs to the Special Issue Pathogenesis of tumor progression in breast and prostate cancer)
Abstract

It is now well established that p53 is the primary arbiter of stress-response and the principal barrier to neoplastic processes at the cellular level. Perhaps the most potent weapon in p53's tumor suppressive arsenal is apoptosis, enacted as a last resort when all other remedies are exhausted. Initially, the mechanism was thought to be simply activation or repression of Bcl-2 family members by p53. More recently, evidence of a more rapid pathway emerged whereby p53 physically interacts with Bcl-2 family members to tip the balance toward apoptosis. This review details the multiple levels of regulation of mitochondrially-directed apoptosis by p53, including recent findings of how p53 translocation is regulated.

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