Cyclophilin J limits inflammation through the blockage of ubiquitin chain sensing.

Cyclophilin J limits inflammation through the blockage of ubiquitin chain sensing.
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亲环蛋白 J 通过阻断泛素链传感来限制炎症

DOI:
10.1038/s41467-018-06756-3
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发表时间:
2018-10-22
影响因子:
16.6
通讯作者:
Chen S
Chen S
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Sheng C;Yao C;Wang Z;Chen H;Zhao Y;Xu D;Huang H;Huang W;Chen S

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维持先天免疫稳态对个体健康很重要。Np14锌指(NZF)结构域介导的泛素链传感被报道在核因子-κ B(NF-κ B)信号通路中起作用,但其调节机制仍然不清楚。在这里,我们表明,亲环素J(CYPJ),肽脯氨酰异构酶家族的成员,是由炎症引起的。CYPJ与转化生长因子-β激活激酶1结合蛋白2和3的NZF结构域以及线性泛素链组装复合物的组分相互作用以阻断泛素链的结合并负性调节NF-κ B信号传导。Cypj缺乏的小鼠易受脂多糖和热灭活单核细胞增生李斯特菌诱导的败血症和葡聚糖硫酸钠诱导的结肠炎的影响。这些发现证实了CYPJ是NF-κ B信号通路的负反馈调节因子,并为理解先天免疫的稳态提供了见解。核因子-κ B(NF-κ B)信号转导受泛素调节以维持免疫稳态。在这里,作者表明肽基脯氨酰异构酶CYPJ阻断TAB 2/3或LUBAC泛素链传感并抑制NF-κ B活化,CYPJ缺乏导致对炎症刺激的易感性。
Maintaining innate immune homeostasis is important for individual health. Npl4 zinc finger (NZF) domain-mediated ubiquitin chain sensing is reported to function in the nuclear factor-kappa B (NF-κB) signal pathway, but the regulatory mechanism remains elusive. Here we show that cyclophilin J (CYPJ), a member of the peptidylprolyl isomerase family, is induced by inflammation. CYPJ interacts with the NZF domain of transform growth factor-β activated kinase 1 binding protein 2 and 3 as well as components of the linear ubiquitin chain assembly complex to block the binding of ubiquitin-chain and negatively regulates NF-κB signaling. Mice with Cypj deficiency are susceptible to lipopolysaccharide and heat-killed Listeria monocytogenes-induced sepsis and dextran sulfate sodium-induced colitis. These findings identify CYPJ as a negative feedback regulator of the NF-κB signaling pathway, and provide insights for understanding the homeostasis of innate immunity. Nuclear factor-kappa B (NF-κB) signaling is regulated by ubiquitin to maintain immune homeostasis. Here the authors show that a peptidylprolyl isomerase, CYPJ, blocks TAB2/3 or LUBAC ubiquitin chain sensing and suppress NF-κB activation, with CYPJ-deficiency leading to susceptibility to inflammatory stimuli.
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