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Cited by 239

The DOI matches its Crossref record; 8 of the 8 references it cites were found in a registry or an index.

Ataxia telangiectasia mutated activation by transcription‐ and topoisomerase I‐induced DNA double‐strand breaks

Open access
Sordet, Olivier, Redon, Christophe E, Guirouilh‐Barbat, Josée, Smith, Susan, Solier, Stéphanie, Douarre, Céline, Conti, Chiara, Nakamura, Asako J, Das, Benu B, Nicolas, Estelle, Kohn, Kurt W, Bonner, William M, Pommier, Yves·2009·EMBO reports

Abstract

Ataxia telangiectasia mutated (ATM), the deficiency of which causes a severe neurodegenerative disease, is a crucial mediator for the DNA damage response (DDR). As neurons have high rates of transcription that require topoisomerase I (TOP1), we investigated whether TOP1 cleavage complexes (TOP1cc)—which are potent transcription‐blocking lesions—also produce transcription‐dependent DNA double‐strand breaks (DSBs) with ATM activation. We show the induction of DSBs and DDR activation in post‐mitotic primary neurons and lymphocytes treated with camptothecin, with the induction of nuclear DDR foci containing activated ATM, γ‐H2AX (phosphorylated histone H2AX), activated CHK2 (checkpoint kinase 2), MDC1 (mediator of DNA damage checkpoint 1) and 53BP1 (p53 binding protein 1). The DSB–ATM–DDR pathway was suppressed by inhibiting transcription and γ‐H2AX signals were reduced by RNase H1 transfection, which removes transcription‐mediated R‐loops. Thus, we propose that Top1cc produce transcription arrests with R‐loop formation and generate DSBs that activate ATM in post‐mitotic cells.

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Metadata

Authors
Sordet, O., Redon, C. E., Guirouilh‐Barbat, J., Smith, S., Solier, S., Douarre, C., Conti, C., Nakamura, A. J., Das, B. B., Nicolas, E., Kohn, K. W., Bonner, W. M., & Pommier, Y.
Venue
EMBO reports
Published
2009-06-26
Volume
10
Issue
8
Pages
887-893
ISSN
  • 1469-221X (ISSN-L)
  • 1469-3178
OpenAlex
W2148229099
Cited by
239
References
8
FWCI
5.04
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Ataxia telangiectasia mutated activation by transcription‐ and topoisomerase I‐induced DNA double‐strand breaks. https://app.cochat.ai/papers/10.1038/embor.2009.97
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Sordet, O., Redon, C. E., Guirouilh‐Barbat, J., Smith, S., Solier, S., Douarre, C., Conti, C., Nakamura, A. J., Das, B. B., Nicolas, E., Kohn, K. W., Bonner, W. M., & Pommier, Y. (2009). Ataxia telangiectasia mutated activation by transcription‐ and topoisomerase I‐induced DNA double‐strand breaks. EMBO reports. https://doi.org/10.1038/embor.2009.97

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