Traditional Chinese medicine bufalin inhibits infectious hematopoietic necrosis virus infection in vitro and in vivo
文献类型： 外文期刊
作者： Zhao, Jing-Zhuang 1 ; Xu, Li-Ming 1 ; Li, Lin-Fang 1 ; Ren, Guang-Ming 1 ; Shao, Yi-Zhi 1 ; Liu, Qi 1 ; Lu, Tong-Yan 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Heilongjiang River Fisheries Res Inst, Harbin, Peoples R China
2.Dept Aquat Anim Dis & Control, Key Lab Aquat Anim Dis & Immune Technol Heilongjia, Harbin, Peoples R China
关键词： infectious hematopoietic necrosis virus; rainbow trout; bufalin; traditional Chinese medicine; antiviral drugs
期刊名称：MICROBIOLOGY SPECTRUM （ 影响因子：3.7； 五年影响因子：5.9 ）
ISSN： 2165-0497
年卷期： 2024 年 12 卷 3 期
页码：
收录情况： SCI
摘要： Infectious hematopoietic necrosis virus (IHNV) causes infectious hematopoietic necrosis and severe economic losses to salmon and trout aquaculture worldwide. Currently, the only commercial vaccine against IHNV is a DNA vaccine with some biosafety concerns. Hence, more effective vaccines and antiviral drugs are needed to prevent IHNV infection. In this study, 1,483 compounds were screened from a traditional Chinese medicine monomer library, and bufalin showed potential antiviral activity against IHNV. The 50% cytotoxic concentration of bufalin was >20 mu M, and the 50% inhibitory concentration was 0.1223 mu M against IHNV. Bufalin showed the inhibition of diverse IHNV strains in vitro, which confirmed that it had an inhibitory effect against all IHNV strains, rather than random activity against a single strain. The bufalin-mediated block of IHNV infection occurred at the viral attachment and RNA replication stages, but not internalization. Bufalin also inhibited IHNV infection in vivo and significantly increased the survival of rainbow trout compared with the mock drug-treated group, and this was confirmed by in vivo viral load monitoring. Our data showed that the anti-IHNV activity of bufalin was proportional to extracellular Na+ concentration and inversely proportional to extracellular K+ concentration, and bufalin may inhibit IHNV infection by targeting Na+/K+-ATPase. The in vitro and in vivo studies showed that bufalin significantly inhibited IHNV infection and may be a promising candidate drug against the disease in rainbow trout.
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