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Site Specific Lysine Acetylation of Histones for Nucleosome Reconstitution using Genetic Code Expansion in Escherichia coli
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Published on: December 26, 2020

Molecular mechanisms regulating cGAS/STING activation in health and disease

Min-Guk Cho1, Rachel Lee1,2, Jaycee Johnson1,2

  • 1Lineberger Comprehensive Cancer Center.

The Journal of Clinical Investigation
|July 1, 2026
PubMed

Insights

The cyclic GMP-AMP synthase/stimulator of interferon genes (cGAS/STING) pathway senses DNA to trigger immune responses. Precise regulation, not just activation or inhibition, is key to controlling inflammation and improving cancer therapy.

Area of Science:

  • Immunology
  • Molecular Biology
  • Cellular Signaling

Background:

  • The cGAS/STING pathway is crucial for sensing cytosolic DNA and initiating innate immune responses against pathogens and cellular damage.
  • Dysregulated cGAS/STING activation is linked to chronic inflammation, autoimmunity, and immune dysfunction, potentially promoting cancer growth.
  • Maintaining immune homeostasis requires strict control over cGAS/STING activity to balance defense and prevent self-damage.

Purpose of the Study:

  • To review and synthesize emerging principles governing cGAS/STING signaling regulation.
  • To explore how disruptions in regulatory mechanisms contribute to immune imbalance and disease pathogenesis.
  • To highlight the potential of restoring cGAS/STING regulation for therapeutic benefit in cancer and inflammatory diseases.

Main Methods:

  • Literature review and synthesis of current research on cGAS/STING pathway regulation.
  • Analysis of signaling control points: initiation, amplification, and termination.
  • Examination of the role of regulatory disruptions in disease contexts, including cancer.

Main Results:

  • cGAS/STING signaling is tightly regulated at multiple steps to maintain cellular homeostasis.
  • Pathological rewiring or dysregulation of these controls can lead to chronic inflammation, immunosuppression, and tissue damage.
  • Aberrant cGAS/STING activity is implicated in tumor progression and resistance to therapies.

Conclusions:

  • Restoring appropriate cGAS/STING pathway regulation, rather than simple modulation, is crucial for reestablishing immune homeostasis.
  • Understanding cGAS/STING as a dynamic regulatory circuit offers new therapeutic strategies for cancer and inflammatory conditions.
  • Targeting regulatory mechanisms holds promise for improving treatment outcomes and managing immune-related diseases.

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