USP7/HAUSP stimulates repair of oxidative DNA lesions

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Abstract

USP7 is involved in the cellular stress response by regulating Mdm2 and p53 protein levels following severe DNA damage. In addition to this, USP7 may also play a role in chromatin remodelling by direct deubiquitylation of histones, as well as indirectly by regulating the cellular levels of E3 ubiquitin ligases involved in histone ubiquitylation. Here, we provide new evidence that USP7 modulated chromatin remodelling is important for base excision repair of oxidative lesions. We show that transient USP7 siRNA knockdown did not change the levels or activity of base excision repair enzymes, but significantly reduced chromatin DNA accessibility and consequently the rate of repair of oxidative lesions. © 2011 The Author(s).

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Khoronenkova, S. V., Dianova, I. I., Parsons, J. L., & Dianov, G. L. (2011). USP7/HAUSP stimulates repair of oxidative DNA lesions. Nucleic Acids Research, 39(7), 2604–2609. https://doi.org/10.1093/nar/gkq1210

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