Cited by 1,362DNA Repair MechanismsPARP inhibition in cancer therapyDNA and Nucleic Acid Chemistry

Human CtIP promotes DNA end resection

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Sartori, Alessandro A., Lukas, Claudia, Coates, Julia, Mistrik, Martin, Fu, Shuang, Bartek, Jiri, Baer, Richard, Lukas, Jiri +1 more·2007·Nature

Abstract

In the S and G2 phases of the cell cycle, DNA double-strand breaks (DSBs) are processed into single-stranded DNA, triggering ATR-dependent checkpoint signalling and DSB repair by homologous recombination. Previous work has implicated the MRE11 complex in such DSB-processing events. Here, we show that the human CtIP (RBBP8) protein confers resistance to DSB-inducing agents and is recruited to DSBs exclusively in the S and G2 cell-cycle phases. Moreover, we reveal that CtIP is required for DSB resection, and thereby for recruitment of replication protein A (RPA) and the protein kinase ATR to DSBs, and for the ensuing ATR activation. Furthermore, we establish that CtIP physically and functionally interacts with the MRE11 complex, and that both CtIP and MRE11 are required for efficient homologous recombination. Finally, we reveal that CtIP has sequence homology with Sae2, which is involved in MRE11-dependent DSB processing in yeast. These findings establish evolutionarily conserved roles for CtIP-like proteins in controlling DSB resection, checkpoint signalling and homologous recombination.

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Authors
Sartori, A. A., Lukas, C., Coates, J., Mistrik, M., Fu, S., Bartek, J., Baer, R., Lukas, J., & Jackson, S. P.
Affiliations
  • University of Cambridge (GB)
  • Danish Cancer Society (DK)
  • Columbia University (US)
Corresponding author
Jackson, Stephen P.
Venue
Nature
Published
2007-10-28
Volume
450
Issue
7169
Pages
509-514
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1979385111
Cited by
1,362
References
50
Citations by year
2026: 21 · 2025: 49 · 2024: 49 · 2023: 45 · 2022: 48 · 2021: 82 · 2020: 80 · 2019: 70 · 2018: 82 · 2017: 77 · 2016: 66 · 2015: 100 · 2014: 95 · 2013: 95 · 2012: 89
FWCI
30.84
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
  • Cancer Research UK (A5290)
  • National Cancer Institute (P01CA097403)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Health Sciences › Medicine › Oncology › PARP inhibition in cancer therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA and Nucleic Acid Chemistry
Keywords
CtIP, RBBP8, DNA end resection, DNA double-strand breaks, Mre11 complex, homologous recombination, replication protein A, Sae2, DNA repair, single-stranded DNA, nuclease activity
MeSH terms
MRE11 Homologue Protein, Carrier Proteins, DNA, DNA Repair, DNA-Binding Proteins, DNA, Single-Stranded, Endodeoxyribonucleases, Endonucleases, Humans, Nuclear Proteins, Recombination, Genetic, G2 Phase, S Phase, Conserved Sequence, Protein Serine-Threonine Kinases, Cell Cycle Proteins, Evolution, Molecular, Saccharomyces cerevisiae Proteins, Cell Line, Tumor, DNA Breaks, Double-Stranded, Ataxia Telangiectasia Mutated Proteins

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