Journal
TRENDS IN BIOCHEMICAL SCIENCES
Volume 39, Issue 6, Pages 268-276Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tibs.2014.04.004
Keywords
oncogene-induced senescence; p38; phosphoinositide 3-kinase; AKT
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Funding
- National Institutes of Health [CA106768, CA131231, CA172115]
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Oncogene-induced senescence (OIS) is a tumor-suppressing response that must be disrupted for cancer to develop. Mechanistic insights into OIS have begun to emerge. Activation of the p53/p21(WAF1) and/or p16(INK4A) tumor-suppressor pathways is essential for OIS. Moreover, the DNA damage response, chromatin remodeling, and senescence-associated secretory phenotype (SASP) are important for the initiation and maintenance of OIS. This review discusses recent advances in elucidating the mechanisms of OIS, focusing on the roles of the p38 mitogen-activated protein kinase (MAPK) and phosphoinositide 3-kinase (PI3K)/cellular homolog of murine thymoma virus AKT/mammalian target of rapamycin (mTOR) pathways. These studies indicate that OIS is mediated by an intricate signaling network. Further delineation of this network may lead to development of new cancer therapies targeting OIS.
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