Cited by 206Inflammasome and immune disordersImmune Response and InflammationCell death mechanisms and regulation

Intracellular Interleukin-1 Receptor 2 Binding Prevents Cleavage and Activity of Interleukin-1α, Controlling Necrosis-Induced Sterile Inflammation

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Zheng, Yue, Humphry, Melanie, Maguire, Janet J., Bennett, Martin R., Clarke, Murray C.H.·2013·Immunity

Abstract

Necrosis can induce profound inflammation or be clinically silent. However, the mechanisms underlying such tissue specificity are unknown. Interleukin-1α (IL-1α) is a key danger signal released upon necrosis that exerts effects on both innate and adaptive immunity and is considered to be constitutively active. In contrast, we have shown that necrosis-induced IL-1α activity is tightly controlled in a cell type-specific manner. Most cell types examined expressed a cytosolic IL-1 receptor 2 (IL-1R2) whose binding to pro-IL-1α inhibited its cytokine activity. In cell types exhibiting a silent necrotic phenotype, IL-1R2 remained associated with pro-IL-1α. Cell types possessing inflammatory necrotic phenotypes either lacked IL-1R2 or had activated caspase-1 before necrosis, which degraded and dissociated IL-1R2 from pro-IL-1α. Full IL-1α activity required cleavage by calpain after necrosis, which increased its affinity for IL-1 receptor 1. Thus, we report a cell type-dependent process that fundamentally governs IL-1α activity postnecrosis and the mechanism allowing conditional release of this blockade.

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Crossref · 10.1016/j.immuni.2013.01.008

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  • Necrotic VSMCs potently drive inflammation via IL1α due to a lack of IL-1R2 that normally binds and inhibits IL-1α.

    “Indeed, necrotic VSMCs potently drive inflammation via IL1α due to a lack of IL-1R2 that normally binds and inhibits IL-1α 133,189 .”

    From Vascular smooth muscle cells in atherosclerosis (2019) · cites this paper as [189]

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Authors
Zheng, Y., Humphry, M., Maguire, J. J., Bennett, M. R., & Clarke, M. C. H.
Affiliations
University of Cambridge (GB)
Corresponding author
Clarke, Murray C.H.
Venue
Immunity
Publisher
Elsevier BV
Published
2013-02
Volume
38
Issue
2
Pages
285-295
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2038182824
Cited by
205
References
54
Citations by year
2026: 6 · 2025: 10 · 2024: 15 · 2023: 11 · 2022: 18 · 2021: 15 · 2020: 6 · 2019: 14 · 2018: 15 · 2017: 17 · 2016: 18 · 2015: 20 · 2014: 18 · 2013: 22
FWCI
11.65
Type
journal article
Language
en
Open access
Locations
  • Immunity (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Apollo (University of Cambridge) (submittedVersion, cc-by-nc-nd)
  • Apollo (University of Cambridge) (submittedVersion, cc-by)
  • Apollo (cc-by)
Funders
  • National Institute for Health and Care Research
  • British Heart Foundation (RG/08/009/25841, PG/06/024/20354, FS/13/3/30038, RG04/001, FS/09/005/26845)
  • NIHR Cambridge Biomedical Research Centre
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • 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
interleukin-1 alpha, interleukin-1 receptor 2, sterile inflammation, necrosis, caspase-1, calpain, IL-1 receptor 1, damage-associated molecular patterns
MeSH terms
Animals, Calpain, Cell Line, Gene Expression Regulation, Humans, Inflammation, Necrosis, Organ Specificity, Protein Binding, Protein Precursors, Signal Transduction, Caspase 1, Mice, Receptors, Interleukin-1 Type II, Interleukin-1alpha, Proteolysis

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