The death domain kinase RIP1 links the immunoregulatory CD40 receptor to apoptotic signaling in carcinomas.
The death domain kinase RIP1 links the immunoregulatory CD40 receptor to apoptotic signaling in carcinomas.
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DOI:
10.1083/jcb.201003087
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发表时间:
2011-02-07
期刊:
影响因子:
--
通讯作者:
Eliopoulos AG
中科院分区:
文献类型:
--
作者:
Knox PG;Davies CC;Ioannou M;Eliopoulos AG
RIP1 is a component of a TRAF2 complex, required for caspase-8 activation and tumor cell killing in response to ligand binding of CD40. CD40, a tumor necrosis factor (TNF) receptor family member, is widely recognized for its prominent role in the antitumor immune response. The immunostimulatory effects of CD40 ligation on malignant cells can be switched to apoptosis upon disruption of survival signals transduced by the binding of the adaptor protein TRAF6 to CD40. Apoptosis induction requires a TRAF2-interacting CD40 motif but is initiated within a cytosolic death-inducing signaling complex after mobilization of receptor-bound TRAF2 to the cytoplasm. We demonstrate that receptor-interacting protein 1 (RIP1) is an integral component of this complex and is required for CD40 ligand-induced caspase-8 activation and tumor cell killing. Degradation of the RIP1 K63 ubiquitin ligases cIAP1/2 amplifies the CD40-mediated cytotoxic effect, whereas inhibition of CYLD, a RIP1 K63 deubiquitinating enzyme, reduces it. This two-step mechanism of apoptosis induction expands our appreciation of commonalities in apoptosis regulatory pathways across the TNF receptor superfamily and provides a telling example of how TNF family receptors usurp alternative programs to fulfill distinct cellular functions.
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影响因子:
7.7
作者:
Devin, A;Lin, Y;Liu, ZG
通讯作者:
Liu, ZG
DOI:
10.1083/jcb.200904158
发表时间:
2009-12-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
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通讯作者:
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通讯作者:
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影响因子:
4.8
作者:
Davies, CC;Bem, D;Eliopoulos, AG
通讯作者:
Eliopoulos, AG
影响因子:
64.5
作者:
Cho YS;Challa S;Moquin D;Genga R;Ray TD;Guildford M;Chan FK
通讯作者:
Chan FK