A RIPK3-caspase 8 complex mediates atypical pro-IL-1β processing.
A RIPK3-caspase 8 complex mediates atypical pro-IL-1β processing.
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DOI:
10.4049/jimmunol.1402167
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发表时间:
2015-02-15
期刊:
影响因子:
--
通讯作者:
Chan FK
中科院分区:
文献类型:
--
作者:
Moriwaki K;Bertin J;Gough PJ;Chan FK
Caspase 8, the initiator caspase for death receptor induced apoptosis, functions as a negative regulator of receptor interacting protein kinase 3 (RIPK3), an essential factor for TNF-, TLR3- or TLR4-induced necroptosis. In certain situations, caspase 8 can also participate in pro-IL-1β processing. However, the biochemical complex that mediates caspase 8-mediated processing is not defined. Here, we show that RIPK3 is crucial for caspase 1- and caspase 8-mediated pro-IL-1β and pro-IL-18 processing in BMDCs in response to LPS stimulation. Caspase 8-mediated pro-IL-1β processing requires intact RIPK1, RIPK3, TRIF and FADD. In response to LPS, a complex that contains RIPK1, RIPK3, FADD and caspase 8 is formed. Surprisingly, RIPK3-specific kinase inhibitors strongly enhanced caspase 8 activation and pro-IL-1β processing in LPS-stimulated BMDCs. However, studies in BMDCs expressing the kinase inactive RIPK3-K51A mutant or RIPK1-K45A mutant showed that neither the kinase activity of RIPK1 nor RIPK3 is required for LPS-induced caspase 8 activation and IL-1β secretion. Hence, RIPK3 is an unexpected positive regulator of caspase 8 activity that promotes IL-1β maturation in BMDCs.
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影响因子:
16
作者:
Mandal P;Berger SB;Pillay S;Moriwaki K;Huang C;Guo H;Lich JD;Finger J;Kasparcova V;Votta B;Ouellette M;King BW;Wisnoski D;Lakdawala AS;DeMartino MP;Casillas LN;Haile PA;Sehon CA;Marquis RW;Upton J;Daley-Bauer LP;Roback L;Ramia N;Dovey CM;Carette JE;Chan FK;Bertin J;Gough PJ;Mocarski ES;Kaiser WJ
通讯作者:
Kaiser WJ
DOI:
10.4049/jimmunol.1400276
发表时间:
2014-09-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Ganesan S;Rathinam VAK;Bossaller L;Army K;Kaiser WJ;Mocarski ES;Dillon CP;Green DR;Mayadas TN;Levitz SM;Hise AG;Silverman N;Fitzgerald KA
通讯作者:
Fitzgerald KA
DOI:
10.1074/jbc.m114.557561
发表时间:
2014-06-06
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
England H;Summersgill HR;Edye ME;Rothwell NJ;Brough D
通讯作者:
Brough D
影响因子:
4.8
作者:
Kaiser, William J.;Sridharan, Haripriya;Mocarski, Edward S.
通讯作者:
Mocarski, Edward S.
影响因子:
32.4
作者:
Kang, Tae-Bong;Yang, Seung-Hoon;Wallach, David
通讯作者:
Wallach, David