The interleukin-1 receptor-associated kinase M selectively inhibits the alternative, instead of the classical NFkappaB pathway.
The interleukin-1 receptor-associated kinase M selectively inhibits the alternative, instead of the classical NFkappaB pathway.
复制标题
DOI:
10.1159/000158541
复制
发表时间:
2009
影响因子:
5.3
通讯作者:
Li L
中科院分区:
文献类型:
--
作者:
Su J;Zhang T;Tyson J;Li L
The innate immunity signaling process is controlled by numerous positive and negative regulators. The interleukin-1 receptor-associated kinase M (IRAK-M) is one of the negative regulators that contribute to the attenuation of NFκB activation. The molecular mechanism involved, however, is poorly defined. In this report, we observed that IRAK-M selectively suppresses the NIK-IKKα-mediated alternative NFκB pathway. Deletion of IRAK-M led to NIK stabilization, favored the formation of the IKKα/IKKα homodimer instead of the IKKα/IKKβ heterodimer, and enhanced RelB nuclear distribution. In contrast, p65 nuclear localization and phosphorylation was not affected by IRAK-M deficiency. IRAK-M-deficient cells exhibited increased expression of selected cytokines such as IL-6 and GM-CSF, as well as quickened resynthesis of IκBα. The increased expression of IL-6 and GM-CSF was ablated when RelB expression was knocked down using specific siRNA. We also demonstrated that the observed inhibitory effect of IRAK-M was primarily limited to the TLR2 ligand, instead of TLR4. Taken together, our findings suggest that IRAK-M negatively regulates the alternative NFκB pathway in a ligand-specific manner.
登录
查看更多内容
影响因子:
3.1
作者:
Ishii, Ken J;Akira, Shizuo
通讯作者:
Akira, Shizuo
影响因子:
64.8
作者:
Oganesyan, G;Saha, SK;Cheng, GH
通讯作者:
Cheng, GH
影响因子:
3.1
作者:
Cuschieri, J;Bulmus, V;Maier, RV
通讯作者:
Maier, RV
DOI:
10.1126/stke.2003.171.re3
发表时间:
2003-02-25
期刊:
Science's STKE : signal transduction knowledge environment
影响因子:
--
作者:
Dunne, Aisling;O'Neill, Luke A J
通讯作者:
O'Neill, Luke A J
影响因子:
4.8
作者:
He, Jeannie Q.;Saha, Supriya K.;Cheng, Genhong
通讯作者:
Cheng, Genhong