期刊
EXPERT OPINION ON THERAPEUTIC TARGETS
卷 11, 期 12, 页码 1623-1637出版社
TAYLOR & FRANCIS LTD
DOI: 10.1517/14728222.11.12.1623
关键词
ageing; cyclin-dependent kinase; cyclin-dependent kinase inhibitor; immortalization; p16(INK4a); p21(WAF1/CIP1/SDI1); p38(MAPK); p53; polycomb group; reactive oxygen species; retinoblastoma protein; senescence; senescence-associated heterochromatic foci; telomerase reverse transcriptase; telomere
Cellular senescence was originally described as a phenomenon observed in cultured human cells. Accumulating lines of evidence now indicate that the same processes also take place in vivo, suggesting important implications for tumor development. Telomere shortening is the most well-established cause of cellular senescence that can be induced by many other intrinsic and extrinsic factors. The retinoblastoma susceptibility gene product is a convergent target that is downstream of these factors. p53, p38MAPK and cyclin-dependent kinase inhibitors p16INK4a (p16) and p21CIP1 (p21) are key mediators. As most stresses that induce cellular senescence are also known causes of cancer, a common strategy might be applied to the development of cancer chemopreventive agents and anti-ageing drugs.
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