Cited by 419Inflammasome and immune disordersCell death mechanisms and regulationImmune Response and Inflammation

Caspase-8 Blocks Kinase RIPK3-Mediated Activation of the NLRP3 Inflammasome

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Kang, Tae-Bong, Yang, Seung-Hoon, Toth, Beata, Kovalenko, Andrew, Wallach, David·2013·Immunity

Abstract

Caspase-8 deficiency in certain cells prompts chronic inflammation. One mechanism suggested to account for this inflammation is enhanced signaling for necrotic cell death, mediated by the protein kinases RIPK1 and RIPK3 that caspase-8 can cleave. We describe an activity of caspase-8 in dendritic cells that controls the initiation of inflammation in another way. Caspase-8 deficiency in these cells facilitated lipopolysaccharide-induced assembly and function of the NLRP3 inflammasome. This effect depended on the functions of RIPK1 and RIPK3, as well as of MLKL and PGAM5, two signaling proteins recently shown to contribute to RIPK3-mediated induction of necrosis. However, although enhancement of inflammasome assembly in the caspase-8-deficient cells shares proximal signaling events with the induction of necrosis, it occurred independently of cell death. These findings provide new insight into potentially pathological inflammatory processes to which RIPK1- and RIPK3-mediated signaling contributes.

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Crossref · 10.1016/j.immuni.2012.09.015

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  • Multiple components of molecular machinery for necroptosis-including ZBP1, RIPK3, MLKL, and TNFR1 (mainly via NF-κB)-impinge on control of inflammasome, a supramolecular platform for activation of CASP1 and consequent secretion of mature IL1B and IL18.

    “Importantly, multiple components of the molecular machinery for necroptosis—including ZBP1, RIPK3, MLKL, and TNFR1 (mainly via NF-κB)—impinge on the control of the so-called “inflammasome”, a supramolecular platform for the activation of CASP1 and consequent secretion of mature interleukin 1 beta (IL1B; best known as IL-1β) and IL18 [524–529].”

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Authors
Kang, T.-B., Yang, S.-H., Toth, B., Kovalenko, A., & Wallach, D.
Affiliations
  • Konkuk University (KR)
  • Weizmann Institute of Science (IL)
Corresponding author
Wallach, David
Venue
Immunity
Publisher
Elsevier BV
Published
2013-01
Volume
38
Issue
1
Pages
27-40
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2078252006
Cited by
419
References
55
Citations by year
2026: 8 · 2025: 20 · 2024: 21 · 2023: 16 · 2022: 32 · 2021: 24 · 2020: 33 · 2019: 28 · 2018: 36 · 2017: 30 · 2016: 38 · 2015: 40 · 2014: 58 · 2013: 35
FWCI
17.11
Type
journal article
Language
en
Open access
Locations
  • Immunity (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
Keywords
caspase-8, NLRP3 inflammasome, RIPK3, RIPK1, MLKL, PGAM5, dendritic cells, lipopolysaccharide, inflammasome assembly, necrosis, chronic inflammation
MeSH terms
NLR Family, Pyrin Domain-Containing 3 Protein, Animals, Carrier Proteins, Cells, Cultured, Dendritic Cells, Lipopolysaccharides, Signal Transduction, Transcriptional Activation, Gene Deletion, Mice, Caspase 8, Receptor-Interacting Protein Serine-Threonine Kinases, Interleukin-1beta, Inflammasomes

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