University of Massachusetts Medical School Faculty Publications

Title

Nitric oxide controls the immunopathology of tuberculosis by inhibiting NLRP3 inflammasome-dependent processing of IL-1beta

UMMS Affiliation

Department of Medicine, Division of Infectious Diseases and Immunology; Department of Medicine, Division of Pulmonary and Critical Care Medicine; Department of Microbiology and Physiological Systems

Publication Date

1-2013

Document Type

Article

Subjects

Animals; Carrier Proteins; Cells, Cultured; Humans; Immunity, Innate; Inflammasomes; Interferon-gamma; Interleukin-1beta; Mice; Mice, Inbred C57BL; Mice, Knockout; Mycobacterium tuberculosis; Nitric Oxide; Protein Modification, Translational; Protein Multimerization; Signal Transduction; Tuberculosis

Disciplines

Bacterial Infections and Mycoses | Immunology and Infectious Disease | Immunopathology

Abstract

Interleukin 1 (IL-1) is an important mediator of innate immunity but can also promote inflammatory tissue damage. During chronic infections such as tuberculosis, the beneficial antimicrobial role of IL-1 must be balanced with the need to prevent immunopathology. By exogenously controlling the replication of Mycobacterium tuberculosis in vivo, we obviated the requirement for antimicrobial immunity and discovered that both IL-1 production and infection-induced immunopathology were suppressed by lymphocyte-derived interferon-gamma (IFN-gamma). This effect was mediated by nitric oxide (NO), which we found specifically inhibited assembly of the NLRP3 inflammasome via thiol nitrosylation. Our data indicate that the NO produced as a result of adaptive immunity is indispensable in modulating the destructive innate inflammatory responses elicited during persistent infections.

Rights and Permissions

Citation: Nat Immunol. 2013 Jan;14(1):52-60. doi: 10.1038/ni.2474. Epub 2012 Nov 18. Link to article on publisher's site

Related Resources

Link to Article in PubMed

Journal/Book/Conference Title

Nature immunology

PubMed ID

23160153