Type I interferon induces necroptosis in macrophages during infection with Salmonella enterica serovar Typhimurium
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Salmonella enterica serovar Typhimurium (S. Typhimurium) is a virulent pathogen that induces rapid host death. Here we observed that host survival after infection with S. Typhimurium was enhanced in the absence of type I interferon signaling, with improved survival of mice deficient in the receptor for type I interferons (Ifnar1(-/-) mice) that was attributed to macrophages. Although there was no impairment in cytokine expression or inflammasome activation in Ifnar1(-/-) macrophages, they were highly resistant to S. Typhimurium-induced cell death. Specific inhibition of the kinase RIP1 or knockdown of the gene encoding the kinase RIP3 prevented the death of wild-type macrophages, which indicated that necroptosis was a mechanism of cell death. Finally, RIP3-deficient macrophages, which cannot undergo necroptosis, had similarly less death and enhanced control of S. Typhimurium in vivo. Thus, we propose that S. Typhimurium induces the production of type I interferon, which drives necroptosis of macrophages and allows them to evade the immune response.
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IFNAR1 and IFNGR1 appear to have pro-necroptotic functions.
“In this context, IFN alpha and beta receptor subunit 1 (IFNAR1) and IFN gamma receptor 1 (IFNGR1) also appear to have pro-necroptotic functions [520–523].”
From Molecular mechanisms of cell death: recommendations of the nomenclature committee on cell death 2018. (2018) · cites this paper as [521]
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- Authors
- Robinson, N., McComb, S., Mulligan, R., Dudani, R., Krishnan, L., & Sad, S.
- Affiliations
- Institute for Biological Sciences (CA)
- University of Ottawa (CA)
- Corresponding author
- Sad, Subash
- Venue
- Nature Immunology
- Published
- 2012-08-26
- Volume
- 13
- Issue
- 10
- Pages
- 954-962
- ISSN
- 1529-2908 (ISSN-L)
- 1529-2916
- PMC
- PMC4005791
- OpenAlex
- W1995878762
- Cited by
- 438
- References
- 7
- Citations by year
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- FWCI
- 16.01
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Licence
- Locations
- Nature Immunology (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- NPARC (submittedVersion)
- Funders
- Canadian Institutes of Health Research (79412_1, 79412_2, 66538_1, 87055_1)
- Topics
- Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
- Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
- Keywords
- type I interferon, necroptosis, macrophages, Salmonella typhimurium, RIP1 kinase, IFNAR1, host cell death, bacterial dissemination, host survival
- MeSH terms
- Animals, Interferon Type I, Macrophage Activation, Macrophages, Mice, Inbred C57BL, Salmonella Infections, Animal, Salmonella typhimurium, Signal Transduction, Apoptosis, GTPase-Activating Proteins, Mice, Receptor-Interacting Protein Serine-Threonine Kinases, Receptor, Interferon alpha-beta, Immune Evasion, Inflammasomes
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