Nature Immunology:MST4磷酸化TRAF6抑制免疫应答新机制

2015-02-05 佚名 生物谷

              近日,来自中国科学院上海生化细胞所的周兆才研究组在著名国际生物学顶尖期刊Nature  Immunology刊登了他们的一项最新研究成果,他们首次发现生发中心激酶MST4能够直接磷酸化TRAF6,抑制免疫应答反应。该

             

近日,来自中国科学院上海生化细胞所的周兆才研究组在著名国际生物学顶尖期刊Nature  Immunology刊登了他们的一项最新研究成果,他们首次发现生发中心激酶MST4能够直接磷酸化TRAF6,抑制免疫应答反应。该研究对治疗因过度炎症反应造成的机体损伤具有重要借鉴意义。
 
周兆才研究员指出,机体需要对免疫系统进行严格控制以避免出现过度炎症,保证宿主免受不必要损伤。他们首次发现生发中心激酶MST4能够动态应答细菌感染,并且扮演炎症负调控因子的角色,MST4能够直接作用于接头分子TRAF6并对其进行磷酸化,阻止其出现寡聚化以及泛素化作用。研究人员在TRAF6-/-胚胎成纤维细胞中过表达TRAF6的突变体,使得TRAF6的463和486位氨基酸不能被磷酸化,发现MST4不能抑制脂多糖诱导的细胞因子合成。在败血性休克模型中,MST4敲低表达的小鼠出现炎症加重,生存率降低的表型,同时发现TRAF6+/-小鼠能够缓和这种不利影响。我们的研究结果
 
综上所述,该文章揭示了调控TRAF6的重要分子机制并且着重强调了MST4在抑制过度免疫应答方面的重要作用。这项研究对治疗因炎症过度造成的机体损伤具有重要意义。

原始出处

Jiao S1, Zhang Z1, Li C1, Huang M1, Shi Z1, Wang Y1, Song X1, Liu H1, Li C1, Chen M1, Wang W1, Zhao Y1, Jiang Z2, Wang H1, Wong CC1, Wang C1, Zhou Z3.The kinase MST4 limits inflammatory responses through direct phosphorylation of the adaptor TRAF6.Nat Immunol. 2015 Feb 2

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    2015-09-13 bsmagic9140
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    2015-11-01 liye789132251
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    2015-02-16 Johnny1989

    已阅

    0

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    2015-02-16 Johnny1989

    0

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    2015-02-16 windmilL1989

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