Senescence and immortalization: role of telomeres and telomerase.

  title={Senescence and immortalization: role of telomeres and telomerase.},
  author={J. Shay and W. Wright},
  volume={26 5},
  • J. Shay, W. Wright
  • Published 2005
  • Biology, Medicine
  • Carcinogenesis
  • Telomere dynamics are a critical component of both aging and cancer. Telomeres progressively shorten in almost all dividing cells and most human cells do not express or maintain sufficient telomerase activity to fully maintain telomeres. There is accumulating evidence that when only a few telomeres are short, they form end-associations, leading to a DNA damage signal resulting in replicative senescence (a cellular growth arrest, also called the M1 stage). In the absence of cell-cycle checkpoint… CONTINUE READING
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