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Assessment of DNA Double Strand Break Repair Activity Using High-throughput and Quantitative Luminescence-Based Reporter Assays
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The DNA-damage response: new molecular insights and new approaches to cancer therapy

Stephen P Jackson1

  • 1Department of Zoology, The Gurdon Institute, University of Cambridge, Cambridge, UK. s.jackson@gurdon.cam.ac.uk

Biochemical Society Transactions
|May 16, 2009
PubMed

Insights

Cells have a DNA-damage response (DDR) to repair DNA double-strand breaks (DSBs). This response is cell-cycle dependent, and understanding it offers new cancer treatment strategies.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • DNA is constantly exposed to damaging agents, threatening genetic integrity.
  • The DNA-damage response (DDR) is a critical cellular system for detecting and repairing DNA damage.
  • DNA double-strand breaks (DSBs) represent a particularly cytotoxic form of DNA damage.

Discussion:

  • Key protein players mediating cellular responses to DSBs have been identified.
  • The cellular response to DSBs is modulated by the cell cycle.
  • This cell-cycle dependency ensures the appropriate DSB repair system is utilized based on the cell's stage.

Key Insights:

  • Identification of crucial proteins involved in the DNA-damage response.
  • Discovery of cell-cycle-dependent regulation of DNA double-strand break repair pathways.
  • Understanding how cells prioritize specific repair mechanisms according to their cell-cycle stage.

Outlook:

  • Advances in understanding the DDR are paving the way for novel cancer therapies.
  • DDR-inhibitory drugs are emerging as promising therapeutic agents in clinical trials.
  • Targeting the DDR offers a potential strategy to enhance cancer treatment efficacy.

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