Cited by 685Tuberculosis Research and EpidemiologyImmune responses and vaccinationsImmune Response and Inflammation

Immune Control of Tuberculosis by IFN-γ-Inducible LRG-47

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MacMicking, John D., Taylor, Gregory A., McKinney, John D.·2003·Science

Abstract

Interferon-γ (IFN-γ) provides an essential component of immunity to tuberculosis by activating infected host macrophages to directly inhibit the replication of Mycobacterium tuberculosis ( Mtb ). IFN-γ–inducible nitric oxide synthase 2 (NOS2) is considered a principal effector mechanism, although other pathways may also exist. Here, we identify one member of a newly emerging 47-kilodalton (p47) guanosine triphosphatase family, LRG-47, that acts independently of NOS2 to protect against disease. Mice lacking LRG-47 failed to control Mtb replication, unlike those missing the related p47 guanosine triphosphatases IRG-47 or IGTP. Defective bacterial killing in IFN-γ–activated LRG-47 –/– macrophages was associated with impaired maturation of Mtb -containing phagosomes, vesicles that otherwise recruited LRG-47 in wild-type cells. Thus, LRG-47 may serve as a critical vacuolar trafficking component used to dispose of intracellular pathogens like Mtb .

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Crossref · 10.1126/science.1088063

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  • Upon stimulation with IFN-γ, macrophages activate GTPases responsible for the recruitment of NOX2 to the mycobacterial phagosome.

    “Upon stimulation with IFN-γ, macrophages activate GTPases, which are responsible for the recruitment of NOX2 to the mycobacterial phagosome (62, 63).”

    From Macrophage defense mechanisms against intracellular bacteria (2015) · cites this paper as [63]

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Authors
MacMicking, J. D., Taylor, G. A., & McKinney, J. D.
Affiliations
Duke University (US)
Corresponding author
MacMicking, John D.
Venue
Science
Published
2003-10-24
Volume
302
Issue
5645
Pages
654-659
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W1989883893
Cited by
685
References
31
Citations by year
2026: 11 · 2025: 15 · 2024: 16 · 2023: 21 · 2022: 15 · 2021: 27 · 2020: 23 · 2019: 26 · 2018: 27 · 2017: 21 · 2016: 21 · 2015: 34 · 2014: 31 · 2013: 44 · 2012: 44
FWCI
19.81
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion)
  • Infoscience (Ecole Polytechnique Fédérale de Lausanne) (submittedVersion, cc-by-nc-nd)
Funders
U.S. Public Health Service (R01 A1051702)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
tuberculosis, interferon-gamma, Mycobacterium tuberculosis, nitric oxide synthase 2, intracellular pathogen clearance, vacuolar trafficking, host immunity
MeSH terms
Animals, Cells, Cultured, Disease Susceptibility, Female, Hydrogen-Ion Concentration, Immunity, Innate, Interferon-gamma, Macrophage Activation, Macrophages, Male, Mice, Inbred C57BL, Mutation, Mycobacterium tuberculosis, Phagosomes, Tuberculosis, Signal Transduction, Macrophages, Alveolar, Nitric Oxide Synthase, GTP-Binding Proteins, Computational Biology, Reverse Transcriptase Polymerase Chain Reaction, Oligonucleotide Array Sequence Analysis, GTP Phosphohydrolases, Mice, Nitric Oxide Synthase Type II

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