TRAF1 is a TNF inducible regulator of NF-κB activation
TRAF1 is a TNF inducible regulator of NF-κB activation
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DOI:
10.1016/s0014-5793(99)01356-3
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发表时间:
1999-10-29
期刊:
影响因子:
3.5
通讯作者:
Beyaert, R
中科院分区:
文献类型:
--
作者:
Carpentier, I;Beyaert, R
Tumor necrosis factor receptor (TNFR)-associated factor TRAF1 nas first identified as a component of the TNFR2 signalling complex, Unlike the other members of the TRAF family, TRAF1 lacks the N-terminal ring finger motif and has a tissue specific expression, Here we demonstrate that expression of TRAF1 is induced by TNF and the protein kinase C (PKC) activator PMA, but not by interleukin-1 (IL-1), TNF-induced upregulation of TRAF1 could be prevented by pretreatment of the cells with the proteasome inhibitor MG-132, whereas the PKC inhibitor Ro31-8220,vas without effect. Interestingly, overexpression of TRAF1 in HEK293T completely prevented NF-kappa B activation induced bg TNF, IL-1, or overexpression of TRAF2 or TRAF6. These data suggest that inducible expression of TRAF1 may serve a negative regulatory function in NF-kappa B signalling pathways. (C) 1999 Federation of European Biochemical Societies.