结合网络药理学从JAK2/STAT3信号通路探讨麻杏甘石汤抗流感病毒的效应机制

Effect mechanism of Ma Xing Gan Shi Decoction against influenza virus from JAK2/STAT3 signaling pathway by combining network pharmacology

目的结合网络药理学探索JAK2/STAT3信号通路在A型流感病毒感染所致肺组织损伤中的影响,并探讨麻杏甘石汤对该通路的干预作用。方法通过网络药理学方法筛选麻杏甘石汤作用于流感病毒的潜在靶点所富集的信号通路;以BLAB/c小鼠为研究对象,用A型流感病毒进行滴鼻感染,设置正常对照组、模型对照组、奥司他韦组、抗病毒颗粒组和麻杏甘石汤组,给予相应药物3、7 d后,处理动物。常规法检测小鼠体质量并计算肺指数,观察肺组织病理变化,RT-PCR法检测肺组织中JAK2、STAT3、IL^(-1)β、IL-4 mRNA表达水平,Western blot法或ELISA法检测肺组织中JAK2、STAT3、IL^(-1)β和IL-4的蛋白的表达水平;利用AutoDock Vina软件对STAT3与靶点化合物进行分子对接。结果麻杏甘石汤主要活性成分与流感病毒有110个交集靶点,富集于170条信号通路;麻杏甘石汤治疗组小鼠体质量增加,肺组织病理损伤减轻,肺指数下调,肺组织中JAK2、STAT3、IL-1βmRNA和蛋白的表达水平下调,IL-4 mRNA和蛋白的表达水平上调;STAT3与麻杏甘石汤中活性化合物甘草查尔酮A有较好的结合活性。结论麻杏甘石汤能有效地减轻肺部病理变化、调节免疫平衡,其可能的作用机制是通过抑制JAK2/STAT3信号通路的激活而缓解A型流感病毒感染所致的肺损伤。

Aim To explore the effect of JAK2/STAT3 signaling pathway on lung tissue injury induced by influenza A virus in combination with network pharmacology and to further explore the intervention effect of Ma Xing Gan Shi Decoction.Methods Network pharmacological method was used to screen the signal pathway enriched by Ma Xing Gan Shi Decoction on the potential target of influenza virus.BLAB/c mice were intranasally infected with influenza A virus.The mice were divided into normal control group,model control group,oseltamivir group,antiviral granule group and Ma Xing Shigan decoction group.The animals were treated with corresponding drugs for 3 and 7 days.Body weight and lung index were detected by HE for observation of the pathological changes of lung tissues.Real-time PCR(RT-PCR)was used to detect the mRNA expression levels of JAK2,STAT3,IL^(-1)βand IL-4 in lung tissues.Western blot and ELISA were used to detect the protein expression levels of JAK2,STAT3,IL^(-1)βand IL-4 in lung tissues.AutoDock Vina software was used to conduct molecular docking between STAT3 and target compounds.Results The main active components of Ma Xing Gan Shi Decoction had 110 intersection targets with influenza virus and were enriched in 170 signaling pathways.Ma Xing Shigan decoction could up-regulate the body weight of mice infected with influenza A virus,improve the pathological injury of lung tissues,down-regulate the lung index and the expression levels of JAK2,STAT3,IL^(-1)βmRNA and protein in lung tissues,and up-regulate the expression levels of IL-4 mRNA and protein.STAT3 had better binding activity with glycyrrhiza chalcone A,an active compound in Ma Xing Gan Shi Decoction.Conclusions Ma Xing Gan Shi Decoction,as an effective compound prescription of traditional Chinese medicine against influenza virus,can effectively reduce pulmonary inflammation and regulate the balance of cytokines.The possible mechanism is to alleviate the lung injury caused by influenza A virus infection in mice by inhibiting the activation of JAK2/STAT3 signal pathway.