The modulation of hepatitis C virus 1a replication by PKR is dependent on NF-kB mediated interferon beta response in Huh7.5.1 cells.

The modulation of hepatitis C virus 1a replication by PKR is dependent on NF-kB mediated interferon beta response in Huh7.5.1 cells.
复制标题

DOI:
10.1016/j.virol.2013.01.015
复制
发表时间:
2013-03-30
期刊:
影响因子:
3.7
通讯作者:
Wang RY
Wang RY
中科院分区:
医学3区
文献类型:
--
作者:
Zhang L;Alter HJ;Wang H;Jia S;Wang E;Marincola FM;Shih JW;Wang RY

文献摘要

参考文献

被引文献

相似文献

蛋白激酶R(PKR)是双链RNA的感受器,在宿主对病毒感染的应答中起重要作用。丙型肝炎基因型2a病毒(HCV 2a)已显示诱导PKR活化以抑制抗病毒干扰素刺激基因(ISG)的翻译,这表明PKR抑制剂可与干扰素α和利巴韦林联合用于治疗慢性HCV感染患者。然而,在本研究中,我们发现使用siRNA PKR、shRNA PKR或PKR抑制剂抑制PKR可增强HCV 1a复制,并使Huh 7.5.1细胞对HCV 1a感染更敏感。此外,PKR沉默抑制了Huh7.5.1细胞和HCV 1a持续感染的Huh7.5.1细胞中NF-κ B活化和NF-κ B介导的STAT 1磷酸化(2 HDD 4)。这些作用伴随着干扰素β反应的降低,从而增强了Huh7.5.1细胞中HCV 1a的复制。我们的结论是,宿主细胞可以采用PKR激活,以限制HCV 1a复制,通过调节NF-κ B的表达。
Protein kinase R (PKR), a sensor of double-stranded RNA, plays an important role in the host response to viral infection. Hepatitis C genotype 2a virus (HCV 2a) has been shown to induce PKR activation to suppress the translation of antiviral interferon stimulated genes (ISGs), suggesting that PKR inhibitor can be beneficial for treating chronically HCV-infected patients in conjunction with interferon alpha and ribavirin. However, in this study, we found that PKR inhibition using siRNA PKR, shRNA PKR or PKR inhibitor enhanced HCV 1a replication and rendered Huh7.5.1 cells more susceptible to HCV1a infection. Additionally, PKR silencing suppressed NF-kB activation and NF-kB mediated STAT1 phosphorylation in Huh7.5.1 cells and HCV1a persistently-infected Huh7.5.1 cells (2HDD4). These effects were accompanied by a reduction of interferon beta response and thereby enhanced HCV1a replication in Huh7.5.1 cells. We conclude that host cells can employ PKR activation to restrict HCV1a replication through regulation of NF-kB expression.
DOI: 10.1006/bbrc.2001.4606
发表时间: 2001-03-30
影响因子: 3.1
作者:
Iwamura, T;Yoneyama, M;Fujita, T
通讯作者: Fujita, T
DOI: 10.1016/j.cellsig.2006.07.002
发表时间: 2007-02-01
影响因子: 4.8
作者:
Hassan, Mohamed;Selimovic, Denis;Abdel-Kader, Ola
通讯作者: Abdel-Kader, Ola
DOI: 10.1002/glia.20450
发表时间: 2007-02-01
期刊: GLIA
影响因子: 6.2
作者:
Carpentier, Pamela A.;Williams, Bryan R.;Miller, Stephen D.
通讯作者: Miller, Stephen D.
DOI: 10.1016/s0168-1702(02)00046-1
发表时间: 2002-07-01
期刊: VIRUS RESEARCH
影响因子: 5
作者:
Ray, RB;Steele, R;Ray, R
通讯作者: Ray, R
DOI: 10.1089/jir.2005.25.152
发表时间: 2005-03-01
影响因子: 2.3
作者:
Giménez-Barcons, M;Wang, CF;Gale, M
通讯作者: Gale, M