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Sensing the Breaks: Cytosolic Chromatin in Senescence and Cancer

Raffaella Di Micco1

  • 1San Raffaele Telethon Institute for Gene Therapy, via Olgettina 60, 20132 Milan, Italy.

Trends in Molecular Medicine
|November 15, 2017
PubMed

Insights

Cellular senescence and cancer treatments trigger immune responses. Innate DNA sensing pathways recognize cytosolic chromatin, linking senescence and anti-tumor immunity.

Area of Science:

  • Immunology
  • Cell Biology
  • Oncology

Background:

  • Cellular senescence is a growth arrest state involving DNA damage response (DDR) and the senescence-associated secretory phenotype (SASP).
  • SASP signals recruit immune cells for senescence clearance, while chemotherapy also induces anti-tumor immunity via interferon pathways.

Purpose of the Study:

  • To investigate the role of innate DNA sensing pathways in recognizing cytosolic chromatin in senescence and cancer.

Main Methods:

  • Analysis of DNA damage response pathways.
  • Investigation of senescence-associated secretory phenotype (SASP) signaling.
  • Study of cytosolic chromatin recognition by innate immune sensors.

Main Results:

  • Cellular senescence and chemotherapy-induced cancer responses share common immune activation mechanisms.
  • Innate DNA sensing pathways are implicated in recognizing cytosolic chromatin in both senescence and cancer contexts.

Conclusions:

  • The innate DNA sensing pathway plays a crucial role in identifying cytosolic chromatin, bridging the understanding of senescence and anti-tumor immunity.

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