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首页> 外文期刊>The Journal of Immunology: Official Journal of the American Association of Immunologists >I{kappa}B Kinase 2/beta Deficiency Controls Expansion of Autoreactive T Cells and Suppresses Experimental Autoimmune Encephalomyelitis.
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I{kappa}B Kinase 2/beta Deficiency Controls Expansion of Autoreactive T Cells and Suppresses Experimental Autoimmune Encephalomyelitis.

机译:I {kappa} B激酶2 /β缺乏控制自身反应性T细胞的扩增并抑制实验性自身免疫性脑脊髓炎。

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摘要

The NF-kappaB family of transcription factors plays a pivotal role in T cell activation and survival during (auto) immune responses. IkappaB kinase 2/beta (IKK2) is part of the IkappaB kinase complex, a central component of the intracellular signaling pathway mediating NF-kappaB activation. We studied the role of IKK2 in autoantigen-specific T cell activation and induction of autoimmune disease using mice that lack this kinase specifically in T cells (IKK2(DeltaT cell) mice). We found highly impaired myelin-oligodendrocyte-glycoprotein (MOG)(35-55)-specific T cell activation in vitro and complete resistance to MOG(35-55)-induced experimental autoimmune encephalomyelitis (EAE) in IKK2(DeltaT cell) C57BL/6 mice in vivo. By contrast, transgenic expression of a pathogenic MOG(35-55)-specific TCR (2D2 TCR) rendered IKK2(DeltaT cell) mice susceptible to MOG(35-55)-induced EAE and restored in vitro MOG(35-55)-specific T cell responses, indicating an expansion defect in IKK2-deficient T cells. Treatment with the IKK2-inhibitory compound PS-1145 reduced MOG(35-55)-specific proliferation and cytokine production of 2D2 transgenic spleen cells in vitro and diminished clinical signs of EAE in vivo. Our data underscore the potential of therapeutic IKK inhibition in autoimmune diseases.
机译:NF-κB转录因子家族在(自动)免疫应答过程中在T细胞活化和存活中起关键作用。 IkappaB激酶2 / beta(IKK2)是IkappaB激酶复合体的一部分,IkappaB激酶复合体是介导NF-kappaB激活的细胞内信号传导途径的重要组成部分。我们研究了IKK2在自身抗原特异性T细胞活化和自身免疫性疾病的诱导中的作用,使用的小鼠在T细胞中缺乏这种激酶(IKK2(DeltaT cell)小鼠)。我们发现高度受损的髓磷脂少突胶质细胞糖蛋白(MOG)(35-55)特异性T细胞活化在体外,并且在IKK2(DeltaT细胞)C57BL /中完全抵抗MOG(35-55)诱导的实验性自身免疫性脑脊髓炎(EAE)。体内6只小鼠。相比之下,致病性MOG(35-55)特异性TCR(2D2 TCR)的转基因表达使IKK2(DeltaT细胞)小鼠易受MOG(35-55)诱导的EAE的影响,并在体外恢复了MOG(35-55)-特异性T细胞反应,表明IKK2缺陷T细胞存在扩增缺陷。用IKK2抑制性化合物PS-1145进行的治疗可降低2D2转基因脾细胞的MOG(35-55)特异性增殖和细胞因子的产生,并减少体内EAE的临床体征。我们的数据强调了自身免疫性疾病中治疗性IKK抑制的潜力。

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