Lysine residues of interferon regulatory factor 7 affect the replication and transcription activator-mediated lytic replication of Kaposi's sarcoma-associated herpesvirus/human herpesvirus 8.

Lysine residues of interferon regulatory factor 7 affect the replication and transcription activator-mediated lytic replication of Kaposi's sarcoma-associated herpesvirus/human herpesvirus 8.
复制标题

干扰素调节因子 7 的赖氨酸残基影响卡波西肉瘤相关疱疹病毒/人疱疹病毒 8 的复制和转录激活剂介导的裂解性复制。

DOI:
10.1099/vir.0.021816-0
复制
发表时间:
2011-01
期刊:
The Journal of general virology
影响因子:
--
通讯作者:
Wang J
Wang J
中科院分区:
其他
文献类型:
--
作者:
Zhang T;Wang Y;Zhang L;Liu B;Xie J;Wood C;Wang J

文献摘要

参考文献

被引文献

相似文献

卡波西肉瘤相关疱疹病毒 (KSHV) 感染经历潜伏期和裂解期,该阶段由病毒复制和转录激活剂 (RTA) 控制。 KSHV 感染后,宿主通过干扰素调节因子 7 (IRF-7) 抑制 RTA 激活的裂解基因表达来做出反应,干扰素调节因子 7 (IRF-7) 是宿主先天免疫反应的关键调节因子。赖氨酸残基是 IRF-7 翻译后修饰的潜在位点,并且被认为对其活性至关重要。在本研究中,我们通过定点诱变分析了 15 个赖氨酸残基对 IRF-7 功能的影响。我们发现一些突变影响 IRF-7 激活干扰素 (IFN)-α1 和 IFN-β 启动子、抑制 RTA 介导的裂解基因表达以及抑制 KSHV 重新激活和裂解复制的能力。然而,其他突变仅影响这四种功能的一部分。这些发现表明IRF-7的赖氨酸残基在介导IFN合成和调节病毒裂解复制中发挥重要作用。
Kaposi's sarcoma-associated herpesvirus (KSHV) infection goes through latent and lytic phases, which are controlled by the viral replication and transcription activator (RTA). Upon KSHV infection, the host responds by suppressing RTA-activated lytic gene expression through interferon regulatory factor 7 (IRF-7), a key regulator of host innate immune response. Lysine residues are potential sites for post-translational modification of IRF-7, and were suggested to be critical for its activity. In this study, we analysed the 15 lysine residues for their effects on IRF-7 function by site-directed mutagenesis. We found that some mutations affect the ability of IRF-7 to activate interferon (IFN)-α1 and IFN-β promoters, to suppress RTA-mediated lytic gene expression and to repress KSHV reactivation and lytic replication. However, other mutations affect only a subset of these four functions. These findings demonstrate that the lysine residues of IRF-7 play important roles in mediating IFN synthesis and modulating viral lytic replication.
DOI: 10.1371/journal.ppat.1000493
发表时间: 2009-06
期刊: PLoS pathogens
影响因子: 6.7
作者:
Chang TH;Kubota T;Matsuoka M;Jones S;Bradfute SB;Bray M;Ozato K
通讯作者: Ozato K
DOI: 10.1128/jvi.74.13.6207-6212.2000
发表时间: 2000-07-01
影响因子: 5.4
作者:
Gradoville, L;Gerlach, J;Miller, G
通讯作者: Miller, G
DOI: 10.1128/mcb.20.23.8803-8814.2000
发表时间: 2000-12-01
影响因子: 5.3
作者:
Marié, I;Smith, E;Levy, DE
通讯作者: Levy, DE
DOI: 10.1128/jvi.79.9.5640-5652.2005
发表时间: 2005-05-01
影响因子: 5.4
作者:
Zhang, J;Wang, JZ;Zhang, LW
通讯作者: Zhang, LW
DOI: 10.1016/j.virol.2009.01.031
发表时间: 2009-04-10
期刊: VIROLOGY
影响因子: 3.7
作者:
Chen, Jiguo;Ye, Fengchun;Xie, Jianping;Kuhne, Kurt;Gao, Shou-Jiang
通讯作者: Gao, Shou-Jiang