Cited by 191PARP inhibition in cancer therapyBRCA gene mutations in cancerDNA Repair Mechanisms

Synthetic lethality of PARP inhibition in cancers lacking BRCA1 and BRCA2 mutations

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Dedes, Konstantin J., Wilkerson, Paul M., Wetterskog, Daniel, Weigelt, Britta, Ashworth, Alan, Reis-Filho, Jorge S.·2011·Cell Cycle

Abstract

Utilizing the concept of synthetic lethality has provided new opportunities for the development of targeted therapies, by allowing the targeting of loss of function genetic aberrations. In cancer cells with BRCA1 or BRCA2 loss of function, which harbor deficiency of DNA repair by homologous recombination, inhibition of PARP1 enzymatic activity leads to an accumulation of single strand breaks that are converted to double strand breaks but cannot be repaired by homologous recombination. Inhibition of PARP has therefore been advanced as a novel targeted therapy for cancers harboring BRCA1/2 mutations. Preclinical and preliminary clinical evidence, however, suggests a potentially broader scope for PARP inhibitors. Loss of function of various proteins involved in double strand break repair other than BRCA1/2 has been suggested to be synthetically lethal with PARP inhibition. Inactivation of these genes has been reported in a subset of human cancers and might therefore constitute predictive biomarkers for PARP inhibition. Here we discuss the evidence that the clinical use of PARP inhibition may be broader than targeting of cancers in BRCA1/2 germ-line mutation carriers.

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  • Tumors with defects in homologous recombination repair are responsive to PARP inhibitors, functioning in a synthetic lethal manner to inhibit repair of single strand breaks via base excision repair.

    “Tumors with defects in HRR are responsive to poly adenosine diphosphate-ribose polymerase inhibitors (PARPis), functioning in a synthetic lethal manner to inhibit repair of single strand breaks via the base excision repair pathway (Dedes et al., 2011).”

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Authors
Dedes, K. J., Wilkerson, P. M., Wetterskog, D., Weigelt, B., Ashworth, A., & Reis-Filho, J. S.
Affiliations
Institute of Cancer Research (GB)
Corresponding author
Reis-Filho, Jorge S.
Venue
Cell Cycle
Published
2011-04-15
Volume
10
Issue
8
Pages
1192-1199
ISSN
  • 1538-4101 (ISSN-L)
  • 1551-4005
OpenAlex
W1975307022
Cited by
191
References
97
Citations by year
2026: 10 · 2025: 8 · 2024: 12 · 2023: 17 · 2022: 12 · 2021: 8 · 2020: 10 · 2019: 13 · 2018: 8 · 2017: 14 · 2016: 12 · 2015: 11 · 2014: 18 · 2013: 12 · 2012: 19
FWCI
8.80
Type
journal article
Language
en
Open access
Locations
  • Cell Cycle (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
  • National Science Foundation
  • Breast Cancer Research Foundation
  • Wellcome Trust
  • Cancer Research UK
  • Breast Cancer Campaign
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
  • Stand Up To Cancer
Topics
  • Health Sciences › Medicine › Oncology › PARP inhibition in cancer therapy
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › BRCA gene mutations in cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
Keywords
synthetic lethality, PARP inhibitors, BRCA1, BRCA2, homologous recombination deficiency, DNA double-strand break repair, targeted cancer therapy, predictive biomarkers, loss-of-function mutations
MeSH terms
Poly(ADP-ribose) Polymerase Inhibitors, Animals, Antineoplastic Agents, Clinical Trials as Topic, Disease Models, Animal, DNA Repair, Enzyme Inhibitors, Epistasis, Genetic, Female, Humans, Male, Neoplasms, Poly(ADP-ribose) Polymerases, Recombination, Genetic, Gene Expression, Germ-Line Mutation, Mice, Knockout, DNA Methylation, BRCA1 Protein, BRCA2 Protein, Mice, Molecular Targeted Therapy

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