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Identification of Na+/K+-ATPase Inhibitor Bufalin as a Novel Pseudorabies Virus Infection Inhibitor In Vitro and In Vivo
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Identification of Na+/K+-ATPase Inhibitor Bufalin as a Novel Pseudorabies Virus Infection Inhibitor In Vitro and In Vivo
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Journal Article
Identification of Na+/K+-ATPase Inhibitor Bufalin as a Novel Pseudorabies Virus Infection Inhibitor In Vitro and In Vivo
2023
Overview
Pseudorabies virus (PRV), an alpha herpesvirus, induces significant economic losses to the swine industry and infects multiple kinds of animals. Therefore, it is of great importance to explore anti-PRV compounds. In this study, to explore the anti-PRV compounds, a library of natural compounds was screened through a cell-based ELISA assay, and it was discovered that bufalin, a Na+/K+-ATPase inhibitor, had a robust inhibitory effect on PRV replication. A time-of-addition experiment and temperature-shift assay showed that bufalin significantly inhibited the entry stage of PRV. NaCl- or KCl-treatment showed that NaCl could enhance the inhibitory effect of bufalin on PRV replication, whereas there was no significant effect under the treatment of KCl. Meanwhile, it was also found that bufalin possessed antiviral activity against other alpha herpesviruses, including human herpes simplex virus type 1 (HSV-1) and chicken Marek’s disease virus (MDV). Finally, it was found that bufalin could decrease the viral load in multiple tissues, and reduce the morbidity and mortality in PRV-challenged BALB/c mice. Overall, our findings demonstrated that bufalin has the potential to be developed as an anti-PRV compound.
Publisher
MDPI AG,MDPI
Subject
