Herpes Simplex Virus 1 Serine/Threonine Kinase US3 Hyperphosphorylates IRF3 and Inhibits Beta Interferon Production
Herpes Simplex Virus 1 Serine/Threonine Kinase US3 Hyperphosphorylates IRF3 and Inhibits Beta Interferon Production
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单纯疱疹病毒 1 丝氨酸/苏氨酸激酶 US3 过度磷酸化 IRF3 并抑制 β 干扰素产生
DOI:
10.1128/jvi.02355-13
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发表时间:
2013-09
影响因子:
5.4
通讯作者:
Zheng Chunfu
中科院分区:
文献类型:
--
作者:
Wang Shuai;Wang Kezhen;Lin Rongtuan;Zheng Chunfu
ABSTRACT Viral infection initiates a series of signaling cascades that lead to the transcription of interferons (IFNs), finally inducing interferon-stimulated genes (ISGs) to eliminate viruses. Viruses have evolved a variety of strategies to modulate host IFN-mediated immune responses. Herpes simplex virus 1 (HSV-1) US3, a Ser/Thr kinase conserved in alphaherpesviruses, was previously reported to counteract host innate immunity; however, the molecular mechanism is elusive. In this study, we report that US3 blocks IFN-β production by hyperphosphorylating IFN regulatory factor 3 (IRF3). Ectopic expression of US3 protein significantly inhibited Sendai virus (SeV)-mediated activation of IFN-β and IFN-stimulated response element (ISRE) promoters and the transcription of IFN-β, ISG54, and ISG56. US3 was also shown to block SeV-induced dimerization and nuclear translocation of IRF3. The kinase activity was indispensable for its inhibitory function, as kinase-dead (KD) US3 mutants K220M and D305A could not inhibit IFN-β production. Furthermore, US3 interacted with and hyperphosphorylated IRF3 at Ser175 to prevent IRF3 activation. Finally, the US3 KD mutant viruses were constructed and denoted K220M or D305A HSV-1, respectively. Cells and mice infected with both mutant viruses produced remarkably larger amounts of IFN-β than those infected with wild-type HSV-1. For the first time, these findings provide convincing evidence that US3 hyperphosphorylates IRF3, blocks the production of IFN-β, and subverts host innate immunity.
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影响因子:
4.8
作者:
Peri P;Mattila RK;Kantola H;Broberg E;Karttunen HS;Waris M;Vuorinen T;Hukkanen V
通讯作者:
Hukkanen V
影响因子:
5.4
作者:
Xing Junji;Ni Liwen;Wang Shuai;Wang Kezhen;Lin Rongtuan;Zheng Chunfu
通讯作者:
Zheng Chunfu
影响因子:
3.7
作者:
Vandevenne P;Lebrun M;El Mjiyad N;Ote I;Di Valentin E;Habraken Y;Dortu E;Piette J;Sadzot-Delvaux C
通讯作者:
Sadzot-Delvaux C
影响因子:
5.4
作者:
Elgadi, MM;Hayes, CE;Smiley, JR
通讯作者:
Smiley, JR
影响因子:
64.8
作者:
Alexopoulou, L;Holt, AC;Flavell, RA
通讯作者:
Flavell, RA