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TBK1 and IKKε prevent TNF-induced cell death by RIPK1 phosphorylation
E. Lafont, P. Draber, E. Rieser, M. Reichert, S. Kupka, D. de Miguel, H. Draberova, A. von Mässenhausen, A. Bhamra, S. Henderson, K. Wojdyla, A. Chalk, S. Surinova, A. Linkermann, H. Walczak,
Jazyk angličtina Země Anglie, Velká Británie
Typ dokumentu časopisecké články, Research Support, N.I.H., Extramural, práce podpořená grantem
Grantová podpora
Wellcome Trust - United Kingdom
NLK
ProQuest Central
od 2000-01-01 do Před 1 rokem
Health & Medicine (ProQuest)
od 2000-01-01 do Před 1 rokem
- MeSH
- buněčná smrt účinky léků MeSH
- buňky A549 MeSH
- fosforylace účinky léků MeSH
- HeLa buňky MeSH
- kinasa I-kappa B metabolismus MeSH
- kultivované buňky MeSH
- lidé MeSH
- myši knockoutované MeSH
- protein-serin-threoninkinasy metabolismus MeSH
- receptory TNF - typ I metabolismus MeSH
- serin-threoninkinasy interagující s receptory metabolismus MeSH
- signální transdukce účinky léků MeSH
- TNF-alfa farmakologie MeSH
- ubikvitinace účinky léků MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Research Support, N.I.H., Extramural MeSH
The linear-ubiquitin chain assembly complex (LUBAC) modulates signalling via various immune receptors. In tumour necrosis factor (TNF) signalling, linear (also known as M1) ubiquitin enables full gene activation and prevents cell death. However, the mechanisms underlying cell death prevention remain ill-defined. Here, we show that LUBAC activity enables TBK1 and IKKε recruitment to and activation at the TNF receptor 1 signalling complex (TNFR1-SC). While exerting only limited effects on TNF-induced gene activation, TBK1 and IKKε are essential to prevent TNF-induced cell death. Mechanistically, TBK1 and IKKε phosphorylate the kinase RIPK1 in the TNFR1-SC, thereby preventing RIPK1-dependent cell death. This activity is essential in vivo, as it prevents TNF-induced lethal shock. Strikingly, NEMO (also known as IKKγ), which mostly, but not exclusively, binds the TNFR1-SC via M1 ubiquitin, mediates the recruitment of the adaptors TANK and NAP1 (also known as AZI2). TANK is constitutively associated with both TBK1 and IKKε, while NAP1 is associated with TBK1. We discovered a previously unrecognized cell death checkpoint that is mediated by TBK1 and IKKε, and uncovered an essential survival function for NEMO, whereby it enables the recruitment and activation of these non-canonical IKKs to prevent TNF-induced cell death.
Bill Lyons Informatics Centre UCL Cancer Institute University College London London UK
Proteomics Research Core Facility UCL Cancer Institute University College London London UK
Citace poskytuje Crossref.org
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