Sam68 modulates the promoter specificity of NF-κB and mediates expression of CD25 in activated T cells.
Sam68 modulates the promoter specificity of NF-κB and mediates expression of CD25 in activated T cells.
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DOI:
10.1038/ncomms2916
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发表时间:
2013
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
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CD25, the alpha chain of the interleukin-2 receptor, is expressed in activated T cells and plays a significant role in autoimmune disease and tumorigenesis; however, the mechanisms regulating transcription of CD25 remain elusive. Here we identify the Src-associated substrate during mitosis of 68kDa (Sam68) as a novel non-Rel component in the nuclear factor-kappaB (NF-κB) complex that confers CD25 transcription. Our results demonstrate that Sam68 plays an essential role in the induction and maintenance of CD25 in T cells. T cell receptor engagement triggers translocation of the inhibitor of NF-κB kinase alpha (IKKα) from the cytoplasm to the nucleus, where it phosphorylates Sam68, causing complex formation with NF-κB in the nucleus. These findings reveal the important roles of KH domain-containing components and their spatial interactions with IKKs in determining the binding targets of NF-κB complexes, thus shedding novel insights into the regulatory specificity of NF-κB.
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影响因子:
4.1
作者:
He JJ;Henao-Mejia J;Liu Y
通讯作者:
Liu Y
影响因子:
64.8
作者:
Lawrence, T;Bebien, M;Karin, M
通讯作者:
Karin, M
影响因子:
64.8
作者:
Matter, N;Herrlich, P;König, H
通讯作者:
König, H
DOI:
10.1073/pnas.93.8.3405
发表时间:
1996-04-16
影响因子:
11.1
作者:
Gerondakis, S;Strasser, A;Grumont, RJ
通讯作者:
Grumont, RJ
影响因子:
64.8
作者:
Anest, V;Hanson, JL;Baldwin, AS
通讯作者:
Baldwin, AS