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Cited by 563

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Oxidative Damage Targets Complexes Containing DNA Methyltransferases, SIRT1, and Polycomb Members to Promoter CpG Islands

Open access
O'Hagan, Heather M., Wang, Wei, Sen, Subhojit, DeStefano Shields, Christina, Lee, Stella S., Zhang, Yang W., Clements, Eriko G., Cai, Yi, Van Neste, Leander, Easwaran, Hariharan, Casero, Robert A., Sears, Cynthia L., Baylin, Stephen B.·2011·Cancer Cell

Abstract

SUMMARY Cancer cells simultaneously harbor global losses and gains in DNA methylation. We demonstrate that inducing cellular oxidative stress by treatment with hydrogen peroxide, recruits DNA methyltransferase 1 (DNMT1) to damaged chromatin. DNMT1 becomes part of a complex(es) containing DNMT3B and members of Polycomb Repressive Complex 4. Hydrogen peroxide treatment causes translocalization of these proteins from non-GC-rich to GC-rich areas. Key components are similarly enriched at gene promoters in an in vivo colitis model. While high expression genes enriched for members of the complex have histone mark and nascent transcription changes, CpG island-containing low expression genes gain promoter DNA methylation. Thus, oxidative damage induces formation and localization of a silencing complex that may explain cancer-specific aberrant DNA methylation and transcriptional silencing.

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Metadata

Authors
O'Hagan, H. M., Wang, W., Sen, S., DeStefano Shields, C., Lee, S. S., Zhang, Y. W., Clements, E. G., Cai, Y., Van Neste, L., Easwaran, H., Casero, R. A., Sears, C. L., & Baylin, S. B.
Venue
Cancer Cell
Publisher
Elsevier BV
Published
2011-11
Volume
20
Issue
5
Pages
606-619
ISSN
1535-6108 (ISSN-L)
OpenAlex
W2168889003
Cited by
563
References
10
FWCI
12.34
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Oxidative Damage Targets Complexes Containing DNA Methyltransferases, SIRT1, and Polycomb Members to Promoter CpG Islands. https://app.cochat.ai/papers/10.1016/j.ccr.2011.09.012
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O'Hagan, H. M., Wang, W., Sen, S., DeStefano Shields, C., Lee, S. S., Zhang, Y. W., Clements, E. G., Cai, Y., Van Neste, L., Easwaran, H., Casero, R. A., Sears, C. L., & Baylin, S. B. (2011). Oxidative Damage Targets Complexes Containing DNA Methyltransferases, SIRT1, and Polycomb Members to Promoter CpG Islands. Cancer Cell. https://doi.org/10.1016/j.ccr.2011.09.012

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