Cited by 208Tuberculosis Research and EpidemiologyImmune responses and vaccinationsAutophagy in Disease and Therapy

Mycobacterium tuberculosis is protected from NADPH oxidase and LC3-associated phagocytosis by the LCP protein CpsA

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Köster, Stefan, Upadhyay, Sandeep, Chandra, Pallavi, Papavinasasundaram, Kadamba, Yang, Guozhe, Hassan, Amir, Grigsby, Steven J., Mittal, Ekansh +6 more·2017·Proceedings of the National Academy of Sciences

Abstract

Significance: Mycobacterium tuberculosis (Mtb), the causative agent of the disease tuberculosis, grows in macrophages, cells that normally kill bacteria. Recent work has defined a macrophage pathway called “LC3-associated phagocytosis” (LAP) that can eliminate other microbes. LAP is characterized by the recruitment of NADPH oxidase to phagosomes, followed by phagosomal association with LC3 and delivery of the bacteria to a degradative lysosome. Here, we show that LAP does not effectively clear Mtb. The ability of Mtb to inhibit LAP and therefore cause disease depends upon CpsA, a member of the LytR-CpsA-Psr (LCP) protein family, which has previously been implicated in cell-wall metabolism. We demonstrate that Mtb CpsA plays an unexpected role in antagonizing host innate immunity by inhibiting NADPH oxidase and LAP.

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Crossref · 10.1073/pnas.1707792114

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  • Mtb virulence factor CpsA actively inhibits Nox2 recruitment to phagosomes, preventing Nox2-derived ROS production and LAP killing.

    “Through its virulence factor CpsA, Mtb also actively inhibits Nox2 recruitment to phagosomes. By preventing Nox2-derived ROS production, Mtb effectively avoids being targeted and killed by LAP [241,256].”

    From Functions of ROS in Macrophages and Antimicrobial Immunity (2021) · cites this paper as [256]

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Authors
Köster, S., Upadhyay, S., Chandra, P., Papavinasasundaram, K., Yang, G., Hassan, A., Grigsby, S. J., Mittal, E., Park, H. S., Jones, V., Hsu, F.-F., Jackson, M., Sassetti, C. M., & Philips, J. A.
Affiliations
  • New York University (US)
  • Washington University in St. Louis (US)
  • University of Massachusetts Chan Medical School (US)
  • Colorado State University (US)
Corresponding author
Philips, Jennifer A.
Venue
Proceedings of the National Academy of Sciences
Published
2017-09-27
Volume
114
Issue
41
Pages
E8711-E8720
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2764322409
Cited by
208
References
69
Citations by year
2026: 21 · 2025: 25 · 2024: 22 · 2023: 22 · 2022: 25 · 2021: 26 · 2020: 27 · 2019: 19 · 2018: 16 · 2017: 4 · 2012: 1
FWCI
13.83
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • The Journal of the American Medical Association (JAMA) Network (American Medical Association) (submittedVersion)
Funders
  • HHS | NIH | National Institute of Allergy and Infectious Diseases (NIAID) (AI130454, AI064282, AI107774, AI119670)
  • Stony Wold-Herbert Fund (Stony Wold-Herbert Fund, Inc.) (N/A)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
Mycobacterium tuberculosis, cpsA, LC3-associated phagocytosis, NADPH oxidase, macrophages, phagosome, innate immune evasion, tuberculosis pathogenesis, host-pathogen interaction
MeSH terms
NADPH Oxidase 2, Animals, Autophagy, Bacterial Proteins, Female, Macrophages, Male, Mice, Inbred C57BL, Microtubule-Associated Proteins, Mycobacterium tuberculosis, Phagocytosis, Phagosomes, Tuberculosis, Mice, SCID, Reactive Oxygen Species, Mice, Knockout, Mice, Nitric Oxide Synthase Type II, Host-Pathogen Interactions

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