Cited by 708NF-κB Signaling PathwaysUbiquitin and proteasome pathwaysCell death mechanisms and regulation

The E3 Ubiquitin Ligase Itch Couples JNK Activation to TNFα-induced Cell Death by Inducing c-FLIPL Turnover

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Chang, Lufen, Kamata, Hideaki, Solinas, Giovanni, Luo, Jun-Li, Maeda, Shin, Venuprasad, K., Liu, Yun-Cai, Karin, Michael·2006·Cell

Abstract

The proinflammatory cytokine tumor necrosis factor (TNF) alpha signals both cell survival and death. The biological outcome of TNFalpha treatment is determined by the balance between NF-kappaB and Jun kinase (JNK) signaling; NF-kappaB promotes survival, whereas JNK enhances cell death. Critically, identity of a JNK substrate that promotes TNFalpha-induced apoptosis has been outstanding. Here we show that TNFalpha-mediated JNK activation accelerates turnover of the NF-kappaB-induced antiapoptotic protein c-FLIP, an inhibitor of caspase-8. This is not due to direct c-FLIP phosphorylation but depends on JNK-mediated phosphorylation and activation of the E3 ubiquitin ligase Itch, which specifically ubiquitinates c-FLIP and induces its proteasomal degradation. JNK1 or Itch deficiency or treatment with a JNK inhibitor renders mice resistant in three distinct models of TNFalpha-induced acute liver failure, and cells from these mice do not display inducible c-FLIP(L) ubiquitination and degradation. Thus, JNK antagonizes NF-kappaB during TNFalpha signaling by promoting the proteasomal elimination of c-FLIP(L).

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Crossref · 10.1016/j.cell.2006.01.021

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  • JNK targets c-FLIP, an inhibitor of caspase-8/caspase-10 activation, for proteasomal degradation, thus allowing apoptosis to proceed.

    “JNK targets c-FLIP, an inhibitor for the activation of caspase-8/caspase-10, for proteasomal degradation, thus allowing apoptosis to proceed [105].”

    From CCN1/CYR61: the very model of a modern matricellular protein (2011) · cites this paper as [105]

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Authors
Chang, L., Kamata, H., Solinas, G., Luo, J.-L., Maeda, S., Venuprasad, K., Liu, Y.-C., & Karin, M.
Affiliations
  • City Of Hope National Medical Center (US)
  • University of California San Diego (US)
  • La Jolla Institute for Immunology (US)
Corresponding author
Karin, Michael
Venue
Cell
Publisher
Elsevier BV
Published
2006-02
Volume
124
Issue
3
Pages
601-613
ISSN
0092-8674 (ISSN-L)
OpenAlex
W1990752073
Cited by
706
References
42
Citations by year
2026: 7 · 2025: 10 · 2024: 15 · 2023: 20 · 2022: 18 · 2021: 23 · 2020: 21 · 2019: 22 · 2018: 16 · 2017: 23 · 2016: 25 · 2015: 34 · 2014: 33 · 2013: 45 · 2012: 56
FWCI
30.04
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › NF-κB Signaling Pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ubiquitin and proteasome pathways
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
Keywords
Itch E3 ubiquitin ligase, c-FLIP, JNK signaling, TNF-α, apoptosis, NF-κB, caspase-8, ubiquitination, proteasomal degradation, acute liver failure, JNK1, cell death
MeSH terms
Animals, Enzyme Activation, Female, Mice, Inbred C57BL, Mice, Mutant Strains, Models, Biological, Pregnancy, Tumor Necrosis Factor-alpha, Signal Transduction, Liver Failure, Acute, Apoptosis, Receptors, Tumor Necrosis Factor, Mice, Knockout, Hepatocytes, Ubiquitin-Protein Ligases, Receptors, Tumor Necrosis Factor, Type I, Intracellular Signaling Peptides and Proteins, JNK Mitogen-Activated Protein Kinases, Mice, Tumor Necrosis Factor Decoy Receptors, CASP8 and FADD-Like Apoptosis Regulating Protein

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