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Nat Cell Biol. 2009 Oct;11(10):1261-7. doi: 10.1038/ncb1971. Epub 2009 Sep 6.

Ageing-related chromatin defects through loss of the NURD complex.

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1
National Cancer Institute, NIH, Bethesda, MD 20892, USA.

Abstract

Physiological and premature ageing are characterized by multiple defects in chromatin structure and accumulation of persistent DNA damage. Here we identify the NURD chromatin remodelling complex as a key modulator of these ageing-associated chromatin defects. We demonstrate loss of several NURD components during premature and normal ageing and we find an ageing-associated reduction in HDAC1 activity. Silencing of individual NURD subunits recapitulated chromatin defects associated with ageing and we provide evidence that structural chromatin defects precede DNA damage accumulation. These results outline a molecular mechanism for chromatin defects during ageing.

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PMID:
19734887
PMCID:
PMC2779731
DOI:
10.1038/ncb1971
[Indexed for MEDLINE]
Free PMC Article

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