Zn2+inhibits PEDV replication by inducing autophagy through the Akt-mTOR pathway

文献类型： 外文期刊

第一作者： Wang, Caiying

作者： Wang, Caiying;Zhang, Yue;Liu, Guangliang;Wang, Caiying;Yang, Shanshan;Savelkoul, Huub F. J.;Jansen, Christine A.

作者机构：

关键词： Zinc; PEDV; Autophagy; VPS34; Akt-mTOR

期刊名称：VETERINARY MICROBIOLOGY （ 影响因子：2.7； 五年影响因子：2.9 ）

ISSN： 0378-1135

年卷期： 2025 年 301 卷

页码：

收录情况： SCI

摘要： Porcine epidemic diarrhea virus (PEDV) is a coronavirus that induces diarrhea in pigs, leading to severe economic losses in the global pig industry. Currently, effective antiviral treatments for porcine epidemic diarrhea (PED) are rarely available for clinical use. Zinc (Zn2+), an essential mineral, is known to reduce diarrhea in piglets transitioning from milk to solid feed by modulating immune system activity. In this study, the role of Zn2+ in regulating PEDV infection was investigated to explore its potential for reducing diarrhea. Our findings show that Zn2+ inhibits PEDV replication in Vero-E6 cells by inducing autophagy. Notably, we demonstrated that autophagy negatively regulates PEDV infection, as confirmed by the use of autophagy inhibitor (3-MA) and activator (RAPA). Further analysis revealed that PEDV infection activates the Akt-mTOR signaling pathway, while Zn2+ inhibits this pathway in Vero-E6 cells. Additionally, overexpression of Akt and Akt Ser473 plasmids in Vero-E6 cells highlights the role of Akt phosphorylation in the Zn2+ induced autophagy that inhibits PEDV replication. In summary, this study identifies a mechanism by which Zn2+ suppresses PEDV infection through the Akt-mTOR pathway by mediating autophagy. These findings provide valuable insights into the potential use of Zn2+ as an effective antiviral agent in vivo.

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