STAT1 is essential for the inhibition of hepatitis C virus replication by interferon-λ but not by interferon-α.

STAT1 is essential for the inhibition of hepatitis C virus replication by interferon-λ but not by interferon-α.
复制标题

DOI:
10.1038/srep38336
复制
发表时间:
2016-12-08
期刊:
影响因子:
4.6
通讯作者:
Sada K
Sada K
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Yamauchi S;Takeuchi K;Chihara K;Honjoh C;Kato Y;Yoshiki H;Hotta H;Sada K

文献摘要

参考文献

被引文献

相似文献

干扰素-α(IFN-α)和IFN-λ是结构上不同的细胞因子,其结合不同的受体,但通过Janus激酶(JAK)-信号转导子和转录激活子(STAT)途径诱导相似基因组的表达。IFN-α和IFN-λ信号传导之间的差异仍然知之甚少。在这里,使用CRISPR/Cas9系统,我们研究了STAT 1和STAT 2在IFN-α和IFN-λ抑制丙型肝炎病毒(HCV)复制中的作用。在HCV感染的Huh-7.5人肝癌细胞中,IFN-α治疗增加了IFN刺激基因(ISG)如双链RNA激活蛋白激酶(PKR)的表达,并降低了病毒RNA和蛋白水平。这些反应仅通过STAT 1的敲除而部分减弱,但通过STAT 2的敲除而消除。相反,IFN-λ对HCV复制的抑制作用可通过敲除STAT 1或STAT 2而消除。基因芯片分析表明,IFN-α而不是IFN-λ可以诱导STAT 1敲除细胞中大多数ISGs的表达。这些结果表明,IFN-α可以通过依赖于STAT 2但不依赖于STAT 1的途径抑制HCV复制,而IFN-λ诱导ISG表达并仅通过STAT 1和STAT 2依赖的途径抑制HCV复制。
Interferon-α (IFN-α) and IFN-λ are structurally distinct cytokines that bind to different receptors, but induce expression of similar sets of genes through Janus kinase (JAK)-signal transducers and activators of transcription (STAT) pathways. The difference between IFN-α and IFN-λ signaling remains poorly understood. Here, using the CRISPR/Cas9 system, we examine the role of STAT1 and STAT2 in the inhibition of hepatitis C virus (HCV) replication by IFN-α and IFN-λ. Treatment with IFN-α increases expression of IFN-stimulated genes (ISGs) such as double-stranded RNA-activated protein kinase (PKR) and decreases viral RNA and protein levels in HCV-infected Huh-7.5 human hepatoma cells. These responses are only partially attenuated by knockout of STAT1 but are abolished by knockout of STAT2. In contrast, the inhibition of HCV replication by IFN-λ is abolished by knockout of STAT1 or STAT2. Microarray analysis reveals that IFN-α but not IFN-λ can induce expression of the majority of ISGs in STAT1 knockout cells. These findings suggest that IFN-α can inhibit HCV replication through a STAT2-dependent but STAT1-independent pathway, whereas IFN-λ induces ISG expression and inhibits HCV replication exclusively through a STAT1- and STAT2-dependent pathway.
DOI: 10.1038/nrmicro3098
发表时间: 2013-10
期刊: Nature reviews. Microbiology
影响因子: --
作者:
通讯作者: --
DOI: 10.1074/jbc.m212972200
发表时间: 2003-04-11
影响因子: 4.8
作者:
Kraus, TA;Lau, JF;Horvath, CM
通讯作者: Horvath, CM
DOI: 10.1016/j.virol.2015.08.001
发表时间: 2015-11
期刊: Virology
影响因子: 3.7
作者:
George CX;Samuel CE
通讯作者: Samuel CE
DOI: 10.1038/emboj.2013.232
发表时间: 2013-11-27
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
Hamming, Ole J.;Terczynska-Dyla, Ewa;Vieyres, Gabrielle;Dijkman, Ronald;Jorgensen, Sanne E.;Akhtar, Hashaam;Siupka, Piotr;Pietschmann, Thomas;Thiel, Volker;Hartmann, Rune
通讯作者: Hartmann, Rune
DOI: 10.1038/nature04193
发表时间: 2005-10-20
期刊: NATURE
影响因子: 64.8
作者:
Meylan, E;Curran, J;Tschopp, R
通讯作者: Tschopp, R