Authors:
ARJ Young, M Narita, M Ferreira, K Kirschner, M Sadaie, JFJ Darot, S Tavaré, S Arakawa, S Shimizu, FM Watt, M Narita
Journal name: 
Genes Dev
Citation info: 
23(7):798-803
Abstract: 
As a stress response, senescence is a dynamic process involving multiple effector mechanisms whose combination determines the phenotypic quality. Here we identify autophagy as a new effector mechanism of senescence. Autophagy is activated during senescence and its activation is correlated with negative feedback in the PI3K-mammalian target of rapamycin (mTOR) pathway. A subset of autophagy-related genes are up-regulated during senescence: Overexpression of one of those genes, ULK3, induces autophagy and senescence. Furthermore, inhibition of autophagy delays the senescence phenotype, including senescence-associated secretion. Our data suggest that autophagy, and its consequent protein turnover, mediate the acquisition of the senescence phenotype.
DOI: 
http://doi.org/10.1101/gad.519709
Research group: 
Narita Group, Tavaré Group, Watt Group
E-pub date: 
01 Apr 2009