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Chemotherapy induced DNA damage response: convergence of drugs and pathways

Derek Woods1, John J Turchi

  • 1Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA.

Cancer Biology & Therapy
|February 6, 2013
PubMed

Insights

Chemotherapy drugs damage cancer cell DNA, triggering a complex DNA damage response (DDR). This response involves DNA repair, cell cycle arrest, and can lead to cell survival or death.

Area of Science:

  • Molecular Biology
  • Cancer Research
  • Cellular Biology

Background:

  • Chemotherapeutics are crucial in cancer treatment, primarily by inducing DNA damage in rapidly dividing cancer cells.
  • The cellular response to DNA damage, known as the DNA damage response (DDR), involves intricate signaling pathways.
  • Diverse DNA lesions trigger varied DDR pathways, yet converge on common outcomes.

Purpose of the Study:

  • To review chemotherapy-induced DNA lesions.
  • To highlight recent advancements in understanding the DNA damage response (DDR).
  • To elucidate the DNA repair pathways activated by DDR and their cellular consequences.

Main Methods:

  • Literature review focusing on chemotherapy-induced DNA damage.
  • Analysis of signaling pathways involved in the DNA damage response (DDR).
  • Examination of DNA repair mechanisms and cellular outcomes.

Main Results:

  • Chemotherapy induces a range of DNA lesions, activating specific DDR pathways.
  • DDR activation leads to DNA repair, translation suppression, and cell cycle arrest.
  • These pathways ultimately determine cell fate, resulting in either survival or apoptosis.

Conclusions:

  • Understanding the DDR is critical for optimizing chemotherapy efficacy.
  • Targeting DDR pathways presents a promising strategy for novel cancer therapies.
  • The cellular consequences of DDR highlight the complexity of cancer treatment response.
Keywords:
ATMATRDNA damageDNA-PKPIKKchemotherapycisplatinsignaling

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