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The DOI matches its Crossref record; 7 of the 7 references it cites were found in a registry or an index.

PARP activation regulates the RNA-binding protein NONO in the DNA damage response to DNA double-strand breaks

Open access
Krietsch, Jana, Caron, Marie-Christine, Gagné, Jean-Philippe, Ethier, Chantal, Vignard, Julien, Vincent, Michel, Rouleau, Michèle, Hendzel, Michael J., Poirier, Guy G., Masson, Jean-Yves·2012·Nucleic Acids Research

Abstract

After the generation of DNA double-strand breaks (DSBs), poly(ADP-ribose) polymerase-1 (PARP-1) is one of the first proteins to be recruited and activated through its binding to the free DNA ends. Upon activation, PARP-1 uses NAD+ to generate large amounts of poly(ADP-ribose) (PAR), which facilitates the recruitment of DNA repair factors. Here, we identify the RNA-binding protein NONO, a partner protein of SFPQ, as a novel PAR-binding protein. The protein motif being primarily responsible for PAR-binding is the RNA recognition motif 1 (RRM1), which is also crucial for RNA-binding, highlighting a competition between RNA and PAR as they share the same binding site. Strikingly, the in vivo recruitment of NONO to DNA damage sites completely depends on PAR, generated by activated PARP-1. Furthermore, we show that upon PAR-dependent recruitment, NONO stimulates nonhomologous end joining (NHEJ) and represses homologous recombination (HR) in vivo. Our results therefore place NONO after PARP activation in the context of DNA DSB repair pathway decision. Understanding the mechanism of action of proteins that act in the same pathway as PARP-1 is crucial to shed more light onto the effect of interference on PAR-mediated pathways with PARP inhibitors, which have already reached phase III clinical trials but are until date poorly understood.

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Crossref · 10.1093/nar/gks798

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Metadata

Authors
Krietsch, J., Caron, M.-C., Gagné, J.-P., Ethier, C., Vignard, J., Vincent, M., Rouleau, M., Hendzel, M. J., Poirier, G. G., & Masson, J.-Y.
Venue
Nucleic Acids Research
Published
2012-08-30
Volume
40
Issue
20
Pages
10287-10301
ISSN
  • 0305-1048 (ISSN-L)
  • 1362-4962
OpenAlex
W2048465335
Cited by
163
References
7
FWCI
3.95
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: PARP activation regulates the RNA-binding protein NONO in the DNA damage response to DNA double-strand breaks. https://app.cochat.ai/papers/10.1093/nar/gks798
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Krietsch, J., Caron, M.-C., Gagné, J.-P., Ethier, C., Vignard, J., Vincent, M., Rouleau, M., Hendzel, M. J., Poirier, G. G., & Masson, J.-Y. (2012). PARP activation regulates the RNA-binding protein NONO in the DNA damage response to DNA double-strand breaks. Nucleic Acids Research. https://doi.org/10.1093/nar/gks798

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