Antiviral and Virucidal Activities of Camptothecin on Fowl Adenovirus Serotype 4 by Blocking Virus Replication
文献类型： 外文期刊
作者： Yin, Dongdong 1 ; Yin, Lei 1 ; Wang, Jieru 1 ; Shen, Xuehuai 1 ; Dai, Yin 1 ; Zhao, Ruihong 1 ; Hu, Xiaomiao 1 ; Hou, Hongyan 1 ; Zhang, Danjun 1 ; Wang, Guijun 2 ; Qi, Kezong 2 ; Pan, Xiaocheng 1 ;
作者机构： 1.Anhui Acad Agr Sci, Inst Anim Husb & Vet Sci, Livestock & Poultry Epidem Dis Res Ctr Anhui Prov, Anhui Prov Key Lab Livestock & Poultry Prod Safety, Hefei, Peoples R China
2.Anhui Agr Univ, Coll Anim Sci & Technol, Anhui Prov Key Lab Vet Pathobiol & Dis Control, Hefei, Peoples R China
关键词： fowl adenovirus serotype 4; camptothecin; antiviral activity; virus replication; hepatitis-hydropericardium syndrome
期刊名称：FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY （ 影响因子：6.073； 五年影响因子：6.34 ）
ISSN： 2235-2988
年卷期： 2022 年 12 卷
页码：
收录情况： SCI
摘要： Fowl adenovirus serotype 4 (FAdV-4) caused hepatitis-hydropericardium syndrome in poultry and caused huge economic losses to the poultry industry. At present, antiviral drugs have not been reported to be effective against this virus, and new treatment methods are urgently needed to treat FAdV-4. Camptothecin has been shown to have antiviral activity against various viruses; however, whether it can inhibit FAdV-4 infection remains unclear. This study aimed to explore the anti-FAdV-4 effects and mechanisms of camptothecin in vitro and in vivo. Several camptothecin treatments were used to study the antiviral activity of camptothecin on FAdV-4-infected Leghorn male hepatocellular (LMH) cells. The FAdV-4 titers of mock and camptothecin-treated infected cell cultures were determined using tissue culture infective dose assay, and the FAdV-4 copy number was determined using quantitative real-time polymerase chain reaction. In addition, the therapeutic effect of camptothecin on FAdV-4-infected chickens was also evaluated. The results showed that camptothecin significantly reduced the viral replication in LMH cells in a dose-dependent manner, resulting in a reduction in viral titer, viral copy number, and viral Hexon protein expression. Camptothecin was also found to have a significant inhibitory effect on the viral replication step. Finally, camptothecin showed anti-FAdV-4 efficacy in the chicken infection model, and the survival rate was improved. This study was novel in proving that camptothecin had a protective effect against FAdV-4, indicating its potential as an antiviral drug against FAdV-4 infection.
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