cGAS-STING pathway in lung cancer and emerging therapeutic approaches

Anuva Joshi1, Enver Cagri Izgu2

  • 1Department of Chemistry and Chemical Biology, Rutgers University, New Brunswick, NJ 08854, USA.

Drug Discovery Today
|March 21, 2026
PubMed

Insights

Lung cancer often weakens the cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway, hindering immunity. Restoring STING activity presents a key therapeutic strategy to combat this aggressive cancer.

Area of Science:

  • Oncology
  • Immunology
  • Molecular Biology

Background:

  • Lung cancer is a leading cause of cancer mortality.
  • The cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway is crucial for immune response but is often suppressed in lung tumors.
  • This suppression aids cancer immune evasion, posing a clinical challenge and therapeutic target.

Purpose of the Study:

  • To analyze how different lung cancer subtypes affect the cGAS-STING pathway.
  • To evaluate novel therapeutic strategies targeting the cGAS-STING pathway in lung cancer.
  • To explore the potential of modulating STING activity for improved lung cancer treatment.

Main Methods:

  • Analysis of cGAS-STING pathway disruption across lung cancer subtypes.
  • Evaluation of emerging therapies including STING agonists.
  • Assessment of epigenetic reactivation, metabolic targeting, and combination regimens.

Main Results:

  • Lung cancer subtypes differentially disrupt the cGAS-STING pathway.
  • Various strategies show potential for restoring pathway activity.
  • Combination therapies including immunotherapy and radiotherapy are being investigated.

Conclusions:

  • Targeting the cGAS-STING pathway is a promising strategy for lung cancer.
  • Precision modulation of STING activity can reshape the tumor microenvironment.
  • This approach may overcome tumor progression and improve patient outcomes.

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