Cited by 645interferon and immune responsesTuberculosis Research and EpidemiologyImmune Response and Inflammation

The Cytosolic Sensor cGAS Detects Mycobacterium tuberculosis DNA to Induce Type I Interferons and Activate Autophagy

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Watson, Robert O., Bell, Samantha L., MacDuff, Donna A., Kimmey, Jacqueline M., Diner, Elie J., Olivas, Joanna, Vance, Russell E., Stallings, Christina L. +2 more·2015·Cell Host & Microbe

Abstract

Type I interferons (IFNs) are critical mediators of antiviral defense, but their elicitation by bacterial pathogens can be detrimental to hosts. Many intracellular bacterial pathogens, including Mycobacterium tuberculosis, induce type I IFNs following phagosomal membrane perturbations. Cytosolic M. tuberculosis DNA has been implicated as a trigger for IFN production, but the mechanisms remain obscure. We report that the cytosolic DNA sensor, cyclic GMP-AMP synthase (cGAS), is required for activating IFN production via the STING/TBK1/IRF3 pathway during M. tuberculosis and L. pneumophila infection of macrophages, whereas L. monocytogenes short-circuits this pathway by producing the STING agonist, c-di-AMP. Upon sensing cytosolic DNA, cGAS also activates cell-intrinsic antibacterial defenses, promoting autophagic targeting of M. tuberculosis. Importantly, we show that cGAS binds M. tuberculosis DNA during infection, providing direct evidence that this unique host-pathogen interaction occurs in vivo. These data uncover a mechanism by which IFN is likely elicited during active human infections.

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Crossref · 10.1016/j.chom.2015.05.004

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  • This phagosome-to-cytosol transition process has consequences for the host cell, such as induction of the cGAS/STING/TBK1/IRF-3/type I interferon signalling axis and NLRP3 inflammasome activation.

    “an important cell biological process that has numerous consequences for the host cell, such as induc-tion of the cGAS/STING/TBK1/IRF-3/type I interferon signalling axis and NLRP3 inflammasome activation (69)(70)(71)(72)(73)(74)(75).”

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Authors
Watson, R. O., Bell, S. L., MacDuff, D. A., Kimmey, J. M., Diner, E. J., Olivas, J., Vance, R. E., Stallings, C. L., Virgin, H. W., & Cox, J. S.
Affiliations
  • University of California, San Francisco (US)
  • Washington University in St. Louis (US)
  • University of California, Berkeley (US)
  • Howard Hughes Medical Institute (US)
Corresponding author
Cox, Jeffery S.
Venue
Cell Host & Microbe
Publisher
Elsevier BV
Published
2015-06
Volume
17
Issue
6
Pages
811-819
ISSN
1931-3128 (ISSN-L)
OpenAlex
W1667606852
Cited by
645
References
44
Citations by year
2026: 50 · 2025: 41 · 2024: 54 · 2023: 53 · 2022: 60 · 2021: 66 · 2020: 67 · 2019: 54 · 2018: 59 · 2017: 70 · 2016: 54 · 2015: 17
FWCI
32.82
Type
journal article
Language
en
Open access
Locations
  • Cell Host & Microbe (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Science Foundation
  • Howard Hughes Medical Institute
  • Arnold and Mabel Beckman Foundation
  • Damon Runyon Cancer Research Foundation
  • University of Pennsylvania
  • National Institutes of Health
  • University of California, San Francisco
  • National Institute of General Medical Sciences (GM: 007067, T32GM007067, T32GM008568)
  • National Institute of Allergy and Infectious Diseases (U19AI109725, P01AI063302)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
cGAS, Mycobacterium tuberculosis, type I interferon, STING, TBK1, IRF3, autophagy, cytosolic DNA sensing, Listeria monocytogenes, c-di-AMP, macrophages, host-pathogen interaction, intracellular bacterial infection, innate immunity
MeSH terms
Cyclic Guanosine Monophosphate-Adenosine Monophosphate Synthase, Animals, Antigens, Bacterial, Autophagy, Bacterial Proteins, Cytosol, DNA, Bacterial, Female, Interferon Type I, Male, Mice, Inbred C57BL, Mice, Mutant Strains, Mycobacterium tuberculosis, Nucleotidyltransferases, Tuberculosis, Legionella pneumophila, Host-Pathogen Interactions

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