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Oncogene-induced senescence is a DNA damage response triggered by DNA hyper-replication

Oncogene-induced senescence is a DNA damage response triggered by DNA hyper-replication Cancer is commonly thought of as uncontrolled cellular proliferation, but in the early stages of many cancers, oncogene expression is associated with cellular senescence. A possible explanation for this has now been found. Two groups report a link between oncogene-induced senescence and the DNA damage response. Activated oncogenes can cause aberrant DNA replication and thereby DNA damage that can lead to cell senescence. Cellular senescence was found previously to be a barrier to tumorigenesis in vivo, so oncogene-induced senescence may be an innate defence against cancer. But its effectiveness is often disabled by further mutations. Understanding the relationship between cell senescence and tumour formation may aid in the development of diagnostic and prognostic tools based on senescence markers. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nature Springer Journals

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References (31)

Publisher
Springer Journals
Copyright
Copyright © 2006 by Nature Publishing Group
Subject
Science, Humanities and Social Sciences, multidisciplinary; Science, Humanities and Social Sciences, multidisciplinary; Science, multidisciplinary
ISSN
0028-0836
eISSN
1476-4687
DOI
10.1038/nature05327
Publisher site
See Article on Publisher Site

Abstract

Cancer is commonly thought of as uncontrolled cellular proliferation, but in the early stages of many cancers, oncogene expression is associated with cellular senescence. A possible explanation for this has now been found. Two groups report a link between oncogene-induced senescence and the DNA damage response. Activated oncogenes can cause aberrant DNA replication and thereby DNA damage that can lead to cell senescence. Cellular senescence was found previously to be a barrier to tumorigenesis in vivo, so oncogene-induced senescence may be an innate defence against cancer. But its effectiveness is often disabled by further mutations. Understanding the relationship between cell senescence and tumour formation may aid in the development of diagnostic and prognostic tools based on senescence markers.

Journal

NatureSpringer Journals

Published: Nov 30, 2006

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