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- W1984225002 abstract "DNA damage recognition subunits such as DDB2 and XPC protect the human skin from ultraviolet (UV) light-induced genome instability and cancer, as demonstrated by the devastating inherited syndrome xeroderma pigmentosum. Here we show that the beneficial DNA repair response triggered by these two genome caretakers critically depends on a dynamic spatiotemporal regulation of their homeostasis. The prolonged retention of DDB2 and XPC in chromatin, because of a failure to readily remove both recognition subunits by the ubiquitin-dependent p97/VCP/Cdc48 segregase complex, leads to impaired DNA excision repair of UV lesions. Surprisingly, the ensuing chromosomal aberrations in p97-deficient cells are alleviated by a concomitant downregulation of DDB2 or XPC. Also, genome instability resulting from an excess of DDB2 persisting in UV-irradiated cells is prevented by concurrent p97 overexpression. Our findings demonstrate that DNA damage sensors and repair initiators acquire unexpected genotoxic properties if not controlled by timely extraction from chromatin." @default.
- W1984225002 created "2016-06-24" @default.
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- W1984225002 date "2014-04-28" @default.
- W1984225002 modified "2023-10-10" @default.
- W1984225002 title "Chromatin retention of DNA damage sensors DDB2 and XPC through loss of p97 segregase causes genotoxicity" @default.
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- W1984225002 doi "https://doi.org/10.1038/ncomms4695" @default.
- W1984225002 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4007632" @default.
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