Cited by 209Tuberculosis Research and EpidemiologyInflammasome and immune disordersImmune Response and Inflammation

Critical role for NLRP3 in necrotic death triggered by Mycobacterium tuberculosis

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Wong, Ka‐Wing, Jacobs Jr, William R.·2011·Cellular Microbiology

Abstract

Induction of necrotic death in macrophages is a primary virulence determinant of Mycobacterium tuberculosis. The ESX-1 secretion system and its substrate ESAT-6 are required for M. tuberculosis to induce necrosis, but host factors that mediate the ESAT-6-promoted necrosis remain unknown. Here we report that ESAT-6-promoted necrotic death in THP-1 human macrophages is dependent on the NLRP3 inflammasome, as shown by RNA interference and pharmacological inhibitions. Phagosomes containing ESAT-6-expressing M. tuberculosis recruit markers previously associated with damaged phagosomal membrane, such as galectin-3 and ubiquitinated protein aggregates. In addition, ESAT-6 promoted lysosomal permeabilization by M. tuberculosis. ESAT-6 mutants defective for ubiquitination were unable to trigger NLRP3 activation and necrotic death. Furthermore, Syk tyrosine kinase, recently implicated in NLRP3 activation during fungal and malarial infections, was necessary for mediating the ESAT-6-promoted necrosis and NLRP3 activation. Our results thus link phagosomal damage and Syk activity to NLRP3-mediated necrotic death triggered by M. tuberculosis ESAT-6 during infection.

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Crossref · 10.1111/j.1462-5822.2011.01625.x

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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
Wong, K., & Jacobs Jr, W. R.
Affiliations
Albert Einstein College of Medicine (US)
Venue
Cellular Microbiology
Publisher
Wiley
Published
2011-07-11
Volume
13
Issue
9
Pages
1371-1384
ISSN
  • 1462-5814 (ISSN-L)
  • 1462-5822
OpenAlex
W1552410459
Cited by
209
References
48
Citations by year
2026: 10 · 2025: 11 · 2024: 15 · 2023: 7 · 2022: 14 · 2021: 12 · 2020: 17 · 2019: 12 · 2018: 12 · 2017: 16 · 2016: 12 · 2015: 21 · 2014: 15 · 2013: 22 · 2012: 11
FWCI
10.84
Type
journal article
Language
en
Open access
Locations
  • Cellular Microbiology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (AI0-51519, AI26170)
  • Center for AIDS Research, University of Washington
  • National Institute of Allergy and Infectious Diseases (R01AI026170, AI-26170, R37AI026170)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
NLRP3 inflammasome, necrosis, Mycobacterium tuberculosis, ESAT-6, ESX-1 secretion system, macrophages, lysosomal membrane permeabilization, ubiquitination, Syk, galectin-3, THP-1 cells, host-pathogen interaction
MeSH terms
NLR Family, Pyrin Domain-Containing 3 Protein, Antigens, Bacterial, Bacterial Proteins, Carrier Proteins, Cell Line, Enzyme-Linked Immunosorbent Assay, Fluorescent Antibody Technique, Genetic Complementation Test, Humans, Macrophages, Mycobacterium tuberculosis, Necrosis, Phagocytosis, Phagosomes, RNA Interference

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