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Crosstalk between chromatin state and DNA damage response in cellular senescence and cancer

Gabriele Sulli1, Raffaella Di Micco, Fabrizio d'Adda di Fagagna

  • 1IFOM Foundation-FIRC Institute of Molecular Oncology Foundation, Milan 20139, Italy.

Nature Reviews. Cancer
|September 7, 2012
PubMed

Insights

Chromatin status influences DNA damage response (DDR) pathways and lesion generation. DDR activation also alters chromatin, impacting cellular senescence and cancer development.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • Chromatin structure plays a critical role in regulating DNA accessibility and repair.
  • DNA damage response (DDR) pathways are activated upon DNA lesion detection.
  • Aberrant DDR signaling and chromatin alterations are hallmarks of cancer and cellular senescence.

Purpose of the Study:

  • To discuss the intricate relationship between chromatin modifications and DDR signaling.
  • To explore how this interplay contributes to oncogene-induced cellular senescence.
  • To examine the role of chromatin-DDR interactions in cancer development.

Main Methods:

  • This is an opinion article, synthesizing existing research and concepts.
  • Literature review and theoretical discussion.
  • Focus on the interplay between chromatin and DDR factors.

Main Results:

  • Chromatin status dictates the efficiency of DNA damage generation and DDR activation.
  • DDR signaling dynamically remodels chromatin at damage sites and genome-wide.
  • Profound chromatin changes accompany DDR engagement in senescence and cancer.

Conclusions:

  • The dynamic interplay between chromatin and DDR is fundamental to cellular homeostasis.
  • Understanding these interactions is crucial for deciphering mechanisms of senescence and cancer.
  • Targeting chromatin-DDR pathways may offer therapeutic strategies for cancer.

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