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Multiple facets of p53 in senescence induction and maintenance
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Journal Article
Multiple facets of p53 in senescence induction and maintenance
2016
Overview
Cellular senescence is a state of durable cell cycle arrest with metabolic activities distinct from those of the proliferative state. Since senescence was originally reported to be induced by various genotoxic stressors, such as telomere erosion and oncogenic signaling, it has been proposed to play a pivotal role in aging‐related changes and as an antitumorigenic barrier in vivo. However, the mechanisms underlying its induction and maintenance remain entirely elusive. We have recently found that abrupt activation of p53 at G2 results in a cell skipping mitosis and subsequently undergoing senescence. Surprisingly, we have also found that downregulation of p53 by SCFFbxo22 is crucial for the induction of a senescence‐associated phenotype. In this review, we provide an overview of recent advances in understanding the mechanisms underlying the timing and magnitude of activation of p53 during senescence. We provide an overview of recent advances in understanding the mechanisms underlying the timing and magnitude of activation of p53 during senescence.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc
