Curcumol inhibits EMCV replication by activating CH25H and inhibiting the formation of ROs

作者：Jiangang Zheng, Panpan Sun, Na Sun, Zhili Hao, Kuohai Fan, Wei Yin, Ajab Khan, Jianhua Guo, Xiaozhong Zheng, Hongquan Li · 发表于：BMC Veterinary Research · 年份：2022 · DOI：10.1186/s12917-022-03531-x · 被引用次数：3 · 研究领域：Viral Infections and Immunology Research、Animal Disease Management and Epidemiology、Animal Virus Infections Studies

Abstract Background Zedoary turmeric oil extracted from the roots of curcuma ( Curcuma aeruginosa Roxb.) is used for the treatment of myocarditis in China. EMCV infection causes abortion in pregnant sows and myocarditis in piglets. Our previous studies demonstrated that curcumol significantly increased the expression of IFN-β in EMCV infected HEK-293T cells. The present results showed that curcumol inhibits EMCV replication by interfering the host cell cholesterol homeostasis and reducing ROs production through activation of the JAK/STAT signaling pathway. Method This study was designed to explore whether curcumol can inhibit the replication of encephalomyocarditis viruses (EMCV) in cell culture. The expression level of JAK1, IRF9, STAT2, P-STAT2, CH25H, PI4KA and OSBP in EMCV-infected HEK-293T cells treated with curcumol, ribavirin or hydroxypropyl-β-CD (HPCD) were determined by Western blotting (WB). The cholesterol level in EMCV infected HEK-293T cells treated with curcumol and HPCD were detected using Amplex™ Red Cholesterol Assay Kit. The antiviral effects of curcumol and HPCD on EMCV were also quantitatively detected by real-time fluorescence quantitative PCR (q-PCR). The amount and morphology of ROs were observed by transmission electron microscopy (TEM). Results The results demonstrated that curcumol significantly ( P < 0.05) increased the expression of JAK1, IRF9, P-STAT2 and CH25H proteins, while that of STAT2, PI4KA and OSBP were remained unchanged. Compared wit...