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A STING to inflammation and autoimmunity.

Vijay Kumar1,2

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The cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway recognizes cytosolic DNA, triggering innate immunity. Dysregulation of this pathway contributes to autoinflammation and autoimmune diseases, offering therapeutic targets.

Keywords:
STINGautoimmunityautoinflammationcGAMPcGASinflammationtype 1 IFNs

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Area of Science:

  • Immunology
  • Molecular Biology
  • Cell Biology

Background:

  • Intracellular pattern recognition receptors (PRRs) detect pathogen- and damage-associated molecular patterns.
  • Cyclic GMP-AMP synthase (cGAS) is a PRR that recognizes cytosolic dsDNA, initiating the cGAS-STING pathway.
  • This pathway is crucial for innate immunity but its overactivation can lead to autoinflammation and autoimmune diseases.

Purpose of the Study:

  • To review the cGAS-STING signaling pathway.
  • To elucidate the role of cGAS-STING in autoinflammation and autoimmune diseases.
  • To discuss therapeutic strategies targeting cGAS-STING signaling.

Main Methods:

  • Literature review of PRRs and cGAS-STING signaling.
  • Analysis of the role of cGAS-STING in disease pathogenesis.
  • Overview of negative regulators and therapeutic interventions.

Main Results:

  • cGAS recognizes dsDNA, producing cGAMP, which activates STING.
  • STING activation leads to type I IFN production and NF-κB activation.
  • The cGAS-STING pathway is implicated in various autoinflammatory and autoimmune conditions.

Conclusions:

  • The cGAS-STING pathway is a critical component of innate immunity against cytosolic dsDNA.
  • Aberrant cGAS-STING activation contributes to autoinflammatory and autoimmune diseases.
  • Targeting the cGAS-STING pathway presents a promising therapeutic avenue for these conditions.