Cited by 157Cell death mechanisms and regulationNF-κB Signaling PathwaysInflammasome and immune disorders

Protective Roles for Caspase-8 and cFLIP in Adult Homeostasis

Open access
Weinlich, Ricardo, Oberst, Andrew, Dillon, Christopher P., Janke, Laura J., Milasta, Sandra, Lukens, John R., Rodriguez, Diego A., Gurung, Prajwal +3 more·2013·Cell Reports

Abstract

Caspase-8 or cellular FLICE-like inhibitor protein (cFLIP) deficiency leads to embryonic lethality in mice due to defects in endothelial tissues. Caspase-8(-/-) and receptor-interacting protein kinase-3 (RIPK3)(-/-), but not cFLIP(-/-) and RIPK3(-/-), double-knockout animals develop normally, indicating that caspase-8 antagonizes the lethal effects of RIPK3 during development. Here, we show that the acute deletion of caspase-8 in the gut of adult mice induces enterocyte death, disruption of tissue homeostasis, and inflammation, resulting in sepsis and mortality. Likewise, acute deletion of caspase-8 in a focal region of the skin induces local keratinocyte death, tissue disruption, and inflammation. Strikingly, RIPK3 ablation rescues both phenotypes. However, acute loss of cFLIP in the skin produces a similar phenotype that is not rescued by RIPK3 ablation. TNF neutralization protects from either acute loss of caspase-8 or cFLIP. These results demonstrate that caspase-8-mediated suppression of RIPK3-induced death is required not only during development but also for adult homeostasis. Furthermore, RIPK3-dependent inflammation is dispensable for the skin phenotype.

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Crossref · 10.1016/j.celrep.2013.08.045

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  • Concurrent deletion of Ripk3 averts perturbations of cutaneous and intestinal homeostasis imposed by tissue-specific ablation of Fadd or Casp8.

    “Along similar lines, the concurrent deletion of Ripk3 averts perturbations of cutaneous and intestinal homeostasis imposed by the tissue-specific ablation of Fadd or Casp8 [483, 487, 488].”
  • Cflar−/− mice require concomitant knockout of Ripk3 and Fadd to develop into adulthood, underscoring inhibitory role of c-FLIP in both necroptosis and extrinsic apoptosis.

    “Of note, Cflar−/− mice require the concomitant knockout of Ripk3 and Fadd to develop into adulthood, which underscores the inhibitory role of c-FLIP in both necroptosis and extrinsic apoptosis reported above [483, 486].”

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Authors
Weinlich, R., Oberst, A., Dillon, C. P., Janke, L. J., Milasta, S., Lukens, J. R., Rodriguez, D. A., Gurung, P., Savage, C., Kanneganti, T. D., & Green, D. R.
Affiliations
  • St. Jude Children's Research Hospital (US)
  • University of Washington (US)
Corresponding author
Green, Douglas R.
Venue
Cell Reports
Publisher
Elsevier BV
Published
2013-10
Volume
5
Issue
2
Pages
340-348
ISSN
2211-1247 (ISSN-L)
OpenAlex
W1981860684
Cited by
157
References
43
Citations by year
2026: 5 · 2025: 6 · 2024: 8 · 2023: 12 · 2022: 6 · 2021: 8 · 2020: 7 · 2019: 12 · 2018: 18 · 2017: 12 · 2016: 25 · 2015: 22 · 2014: 15 · 2013: 1
FWCI
9.41
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Friedreich's Ataxia Research Alliance
  • American Lebanese Syrian Associated Charities
  • National Cancer Institute (R01CA169291, CA169291, P30CA021765)
  • National Institute of Allergy and Infectious Diseases (R01AI044828, AI47891, AI44828, R01AI047891, R37AI044828)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Inflammasome and immune disorders
Keywords
caspase-8, c-FLIP, RIPK3, necroptosis, keratinocyte death, tissue homeostasis, sepsis, skin inflammation, intestinal inflammation, TNF-α, embryonic lethality
MeSH terms
Animals, Homeostasis, Neutrophils, Skin, Tamoxifen, Tumor Necrosis Factor-alpha, Apoptosis, Mice, Knockout, Enterocytes, Mice, Caspase 8, Receptor-Interacting Protein Serine-Threonine Kinases, CASP8 and FADD-Like Apoptosis Regulating Protein

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