Essential role for the prolyl isomerase Pin1 in Toll-like receptor signaling and type I interferon-mediated immunity.

Essential role for the prolyl isomerase Pin1 in Toll-like receptor signaling and type I interferon-mediated immunity.
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DOI:
10.1038/ni.2069
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发表时间:
2011-07-10
期刊:
影响因子:
30.5
通讯作者:
Lu, Kun Ping
Lu, Kun Ping
中科院分区:
医学1区
文献类型:
--
作者:
Tun-Kyi, Adrian;Finn, Greg;Greenwood, Alex;Nowak, Michael;Lee, Tae Ho;Asara, John M.;Tsokos, George C.;Fitzgerald, Kate;Israel, Elliot;Li, Xiaoxia;Exley, Mark;Nicholson, Linda K.;Lu, Kun Ping

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Toll样受体(TLRs)形成对微生物的先天免疫和获得性免疫。IRAK1酶从TLRs传递信号,但其激活和调节机制尚不清楚。我们发现TLR7和TLR9激活了异构酶Pin1,然后异构酶Pin1与IRAK1结合,导致IRAK1激活,并促进其从受体复合体中释放出来,激活转录因子IRF7,诱导I型干扰素。因此,Pin1基因缺失的细胞和小鼠无法启动TLR介导的、干扰素依赖的先天和获得性免疫反应。鉴于异常的IRAK1激活和I型干扰素在各种免疫疾病中的关键作用,通过抑制Pin1来控制IRAK1的激活可能是一种有用的治疗方法。
Toll-like receptors (TLRs) shape innate and adaptive immunity to microorganisms. The enzyme IRAK1 transduces signals from TLRs, but its activation and regulation mechanisms remain unknown. We show that TLR7 and TLR9 activated the isomerase Pin1, which then bound to IRAK1, resulting in IRAK1 activation and facilitating its release from the receptor complex to activate the transcription factor IRF7 and induce type I interferons. Consequently, Pin1-null cells and mice failed to mount TLR-mediated, interferon-dependent innate and adaptive immune responses. Given the critical role of aberrant IRAK1 activation and type I interferons in various immune diseases, controlling IRAK1 activation via Pin1 inhibition may represent a useful therapeutic approach.
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