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Targeted therapy for cancer using PARP inhibitors

Christopher J Lord1, Alan Ashworth

  • 1The Breakthrough Breast Cancer Research Centre, The Institute of Cancer Research, Fulham Road, London, UK. Chris.Lord@icr.ac.uk

Current Opinion in Pharmacology
|July 23, 2008
PubMed

Insights

Poly (ADP-ribose) Polymerase (PARP) inhibitors show promise as cancer treatments, particularly for BRCA-mutated cancers, by exploiting synthetic lethality. Further research is needed to optimize their specificity and potency for clinical use.

Area of Science:

  • Oncology
  • Molecular Biology
  • Genetics

Background:

  • Poly (ADP-ribose) Polymerase (PARP) enzymes are crucial for DNA repair.
  • Small molecule PARP inhibitors are developed as chemotherapy sensitizers.
  • PARP inhibition demonstrates selectivity for cancers with BRCA1/BRCA2 deficiencies.

Purpose of the Study:

  • To explore the potential of PARP inhibitors in treating BRCA-mutated cancers.
  • To investigate the synthetic lethal approach for cancer therapy.
  • To address unanswered questions regarding PARP inhibitor specificity and potency.

Main Methods:

  • Review of established roles of PARP in DNA repair.
  • Analysis of studies demonstrating PARP inhibitor selectivity for BRCA deficiency.
  • Examination of emerging mechanisms of cellular resistance to PARP inhibitors.

Main Results:

  • PARP inhibitors show potential as a targeted therapy for BRCA-mutated cancers.
  • This represents a clinically relevant application of synthetic lethality.
  • Understanding resistance mechanisms is key to optimizing clinical application.

Conclusions:

  • PARP inhibitors offer a promising synthetic lethal strategy for BRCA-mutated cancers.
  • Further research is required to define optimal PARP inhibitor specificity and potency.
  • Investigating resistance mechanisms will guide effective clinical use of PARP inhibitors.

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