Suppression effect of plant-derived berberine on cyprinid herpesvirus 2 proliferation and its pharmacokinetics in Crucian carp (Carassius auratus gibelio).

Suppression effect of plant-derived berberine on cyprinid herpesvirus 2 proliferation and its pharmacokinetics in Crucian carp (Carassius auratus gibelio). Antiviral Res. 2020 Dec 22;186:105000 Authors: Su M, Tang R, Wang H, Lu L Abstract Cyprinid herpesvirus 2 (CyHV-2), which infects silver crucian carp including goldfish (Carassius auratus auratus) and Crucian carp (Carassius auratus gibelio) with high mortality, is an emerging viral pathogen worldwide. Previous studies showed that berberine (BBR), a bioactive plant-derived alkaloid, demonstrated potential antiviral actions against many different viruses. Here, we assessed the effect of berberine hydrochloride (BBH) on the replication of CyHV-2 in vitro and in vivo. Cytotoxicity assay indicated that 5-25 μg/mL BBH was non-toxic to the RyuF-2 cells. In viral inhibition assays, real time PCR was employed to titrate the genomic copy number of progeny virus, real time RT-PCR was applied to monitor the transcriptional levels of viral genes, and Western blot analysis was performed to detect the synthetic levels of viral proteins. The results demonstrated that BBH systematically impedes the viral gene transcription and suppressed the replication of CyHV-2 in RyuF-2 cells. In animal challenge test, BBH was confirmed to protect Crucian carps from CyHV-2 infection in a dose-dependent manner, which was supported by suppressed viral replication levels, reduced viral pathogenesis and higher...
Source: Antiviral Research - Category: Virology Authors: Tags: Antiviral Res Source Type: research