Inhibition of T-cell activation by PIK3IP1.

Inhibition of T-cell activation by PIK3IP1.
复制标题

DOI:
10.1002/eji.201141653
复制
发表时间:
2012-10
影响因子:
5.4
通讯作者:
Kane, Lawrence P.
Kane, Lawrence P.
中科院分区:
医学3区
文献类型:
--
作者:
DeFrances, Marie C.;Debelius, Daniel R.;Cheng, Jing;Kane, Lawrence P.

文献摘要

参考文献

被引文献

相似文献

PI-3激酶(PI3K)通路对T细胞的发育和激活至关重要。该途径的几个负调控因子已经被描述和表征:脂磷酸酶SHIP、PHLPP和PTEN,后者是肿瘤抑制因子。PIK3IP1是最近发现的一种跨膜蛋白,具有结合催化蛋白p110并阻止其被p85家族接头蛋白激活的能力。到目前为止,关于PIK3IP1在调节淋巴细胞发育或激活中的可能作用尚不清楚。在这里,我们首次证明了PIK3IP1在T细胞中表达。PIK3IP1在Jurkat或D10T细胞系中的异位表达抑制了NFAT/AP-1转录报告的激活。相反,在相同的细胞系中,siRNA介导的PIK3IP1的沉默适度地增加了Akt的磷酸化,T细胞的激活和IL-2的产生。这些结果表明,新的PI3K调节因子PIK3IP1对T细胞的激活具有抑制作用。
The PI-3 kinase (PI3K) pathway is critical for T-cell development and activation. Several negative regulators of this pathway have already been described and characterized: the lipid phosphatases SHIP, PHLPP and PTEN, the latter of which are tumor suppressors. PIK3IP1 is a recently described transmembrane protein that has the ability to bind the catalytic protein p110 and prevent its activation by the p85 family adaptor proteins. Thus far, nothing is known about the possible role of PIK3IP1 in the regulation of lymphocyte development or activation. Here, we show for the first time that PIK3IP1 is expressed in T cells. Ectopic expression of PIK3IP1 in Jurkat or D10 T cell lines inhibited activation of an NFAT/AP-1 transcriptional reporter. Conversely, siRNA-mediated silencing of PIK3IP1 in the same cell lines modestly augmented Akt phosphorylation, T-cell activation and production of IL-2. These results suggest that the novel PI3K regulator PIK3IP1 plays an inhibitory role in T-cell activation.
DOI: 10.1128/mcb.20.18.6945-6957.2000
发表时间: 2000-09-01
影响因子: 5.3
作者:
Shan, XC;Czar, MJ;Wange, RL
通讯作者: Wange, RL
DOI: 10.1016/j.bbapap.2007.10.003
发表时间: 2008-01-01
影响因子: 3.2
作者:
Marone, Romina;Cmijanovic, Vladimir;Wymann, Matthias P.
通讯作者: Wymann, Matthias P.
DOI: 10.1016/j.ccr.2009.06.006
发表时间: 2009-08-04
期刊: Cancer cell
影响因子: 50.3
作者:
Gewinner C;Wang ZC;Richardson A;Teruya-Feldstein J;Etemadmoghadam D;Bowtell D;Barretina J;Lin WM;Rameh L;Salmena L;Pandolfi PP;Cantley LC
通讯作者: Cantley LC
DOI: 10.1002/gcc.20843
发表时间: 2011-03-01
影响因子: 3.7
作者:
Gilbert, Duncan C.;McIntyre, Alan;Shipley, Janet
通讯作者: Shipley, Janet
DOI: 10.4049/jimmunol.172.9.5441
发表时间: 2004-05-01
影响因子: 4.4
作者:
Kane, LP;Mollenauer, MN;Weiss, A
通讯作者: Weiss, A