Journal
VIROLOGY JOURNAL
Volume 12, Issue -, Pages -Publisher
BIOMED CENTRAL LTD
DOI: 10.1186/s12985-015-0433-y
Keywords
HSV-1; hZAP; UL41; Immune evasion
Categories
Funding
- National Natural Science Foundation of China [81371795, 81571974]
- Innovative Research Team in Soochow University (PCSIRT, IRT) [1075]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Background: The zinc finger antiviral protein (ZAP) is a host restriction factor that inhibits the replication of various viruses by degradation of certain viral mRNA. However, previous study demonstrated that ectopic expression of rat ZAP did not suppress the replication of herpes simplex virus type 1 (HSV-1), an archetypal member of the alphaherpesvirus subfamily, and the molecular mechanism underneath is still illusive. Results: Human ZAP (hZAP) does not suppress the replication of herpes simplex virus 1, and HSV-1 UL41 protein was identified as an antagonist of hZAP by degrading its mRNA. Infection of wild-type (WT), but not UL41-null mutant (R2621) virus, diminished the accumulation of hZAP to abrogate its antiviral activity. Moreover, ectopic expression of hZAP inhibited the replication of R2621 but not WT HSV-1. Conclusion: HSV-1 UL41 was shown for the first time to evade the antiviral function of hZAP via its RNase activity.
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