Cited by 6,683PARP inhibition in cancer therapyDNA Repair MechanismsBRCA gene mutations in cancer

Targeting the DNA repair defect in BRCA mutant cells as a therapeutic strategy

Farmer, Hannah, McCabe, Nuala, Lord, Christopher J., Tutt, Andrew N. J., Johnson, Damian A., Richardson, Tobias B., Santarosa, Manuela, Dillon, Krystyna J. +6 more·2005·Nature

Abstract

BRCA1 and BRCA2 are important for DNA double-strand break repair by homologous recombination, and mutations in these genes predispose to breast and other cancers. Poly(ADP-ribose) polymerase (PARP) is an enzyme involved in base excision repair, a key pathway in the repair of DNA single-strand breaks. We show here that BRCA1 or BRCA2 dysfunction unexpectedly and profoundly sensitizes cells to the inhibition of PARP enzymatic activity, resulting in chromosomal instability, cell cycle arrest and subsequent apoptosis. This seems to be because the inhibition of PARP leads to the persistence of DNA lesions normally repaired by homologous recombination. These results illustrate how different pathways cooperate to repair damage, and suggest that the targeted inhibition of particular DNA repair pathways may allow the design of specific and less toxic therapies for cancer.

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Crossref · 10.1038/nature03445

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  • BRCA-mutated cancer cells are selectively sensitive to agents that require homologous recombination repair, such as PARP1 inhibitors.

    “Thus, BRCA-mutated cancer cells are selectively sensitive to agents that require repair of double-strand breaks by homologous recombination, such as PARP1 inhibitors [5–7].”

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Authors
Farmer, H., McCabe, N., Lord, C. J., Tutt, A. N. J., Johnson, D. A., Richardson, T. B., Santarosa, M., Dillon, K. J., Hickson, I., Knights, C., Martin, N. M. B., Jackson, S. P., Smith, G. C. M., & Ashworth, A.
Affiliations
  • Cancer Research UK (GB)
  • Institute of Cancer Research (GB)
  • Guy's Hospital (GB)
  • University of Cambridge (GB)
Corresponding author
  • Smith, Graeme C. M.
  • Ashworth, Alan
Venue
Nature
Published
2005-04
Volume
434
Issue
7035
Pages
917-921
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W1973268287
Cited by
6,683
References
24
Citations by year
2026: 271 · 2025: 346 · 2024: 356 · 2023: 454 · 2022: 443 · 2021: 502 · 2020: 460 · 2019: 382 · 2018: 381 · 2017: 353 · 2016: 358 · 2015: 315 · 2014: 312 · 2013: 292 · 2012: 262
FWCI
68.30
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Research Portal (King's College London) (submittedVersion)
Funders
  • Cancer Research UK
  • National Cancer Institute (F31CA260794)
Topics
  • Health Sciences › Medicine › Oncology › PARP inhibition in cancer therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
Keywords
BRCA1, BRCA2, PARP inhibitors, homologous recombination, base excision repair, synthetic lethality, breast cancer, DNA double-strand break repair, chromosomal instability, cell cycle arrest, apoptosis, targeted cancer therapy
MeSH terms
Poly(ADP-ribose) Polymerase Inhibitors, Animals, Antineoplastic Agents, Cell Survival, DNA Damage, DNA Repair, Mice, Nude, Models, Biological, Mutation, Neoplasms, Poly(ADP-ribose) Polymerases, Substrate Specificity, Apoptosis, Genes, BRCA1, Xenograft Model Antitumor Assays, Genes, BRCA2, Mice

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