Ginkgolic acid inhibits the replication of pseudorabies virus in vitro and in vivo by suppressing the transcription of viral late genes.
Research in veterinary science(2023)
摘要
Pseudorabies virus (PRV) belongs to the species of alphaherpesvirus that can cause substantial economic losses to the world swine industry. Therefore, research on anti-PRV compounds is of great value. In this study, it was found that ginkgolic acid could efficiently inhibit the replication of PRV, and the IC50 and CC50 were 3.407 μM and 102.3 μM, respectively. Moreover, it was discovered that ginkgolic acid had no effect on the adsorption, entry, and release stages of the PRV replication cycle. Importantly, it was found that ginkgolic acid could significantly suppress the transcription of PRV late genes, while the transcription of viral immediate early and early genes was not affected. Finally, in vivo experiments showed that ginkgolic acid could significantly reduce the viral load of PRV in multiple tissues and increase 30% survival rate of mice upon the challenge of PRV. Taken together, a novel PRV replication inhibitor, ginkgolic acid, which worked through suppressing the transcription of the late genes, was found in this study. This study provides a potential therapy method for the infection of PRV.
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