香兰素下调cGAS/STING信号通路改善肝内胆汁淤积大鼠肝组织损伤OA北大核心CSTPCD
Vanillin down-regulates cGAS/STING signaling pathway to improve liver tissue injury in rats with intrahepatic cholestasis
目的 探讨香兰素调节环鸟苷酸腺苷酸合成酶(cyclic guanylate adenylate synthetase,cGAS)/干扰素基因刺激因子(stimulator of interferon gene,STING)信号通路对肝内胆汁淤积(intrahepatic cholestasis,IC)大鼠肝组织损伤的影响.方法 将SD大鼠随机分为正常组、IC组、香兰素组、cGAS过表达组、香兰素+cGAS过表达组,连续给药7 d.测定大鼠体质量、肝质量和肝质量/体质量比值;酶联免疫吸附法测定肝功能指标(ALT、AST、ALP、LDH),IC 指标(TBIL、TBA),肝纤维化指标(HA、LN、PCⅢ);HE、Masson染色分别观察肝脏病理学、纤维沉积变化,并计算胶原容积分数;蛋白印迹法检测肝组织cGAS/STING通路相关蛋白表达.结果 香兰素可改善IC大鼠肝脏病理、纤维化,升高体质量,降低肝脏质量、ALT、AST、ALP、LDH、TBIL、TBA、HA、LN、PCⅢ、胶原容积分数、cGAS、STING蛋白(P＜0.05);cGAS过表达可逆转香兰素对IC大鼠上述指标的影响(P＜0.05).结论 香兰素可能通过下调cGAS/STING信号通路,改善IC大鼠肝功能、IC、肝纤维化和肝组织损伤.
Aim To investigate the effect of vanillin on the regulation of cyclic guanylate adenylate synthetase(cGAS)/stimulator of interferon gene(STING)signa-ling pathway on hepatic tissue injury in rats with intra-hepatic cholestasis(IC).Methods SD rats were randomly divided into normal group,IC group,vanillin group,cGAS overexpression group,and vanillin+cGAS overexpression group,with continuous adminis-tration for seven days.The body weight,liver weight and liver to body weight ratio of rats were measured.Liver function(ALT,AST,ALP,LDH),IC(TBIL,TBA)and liver fibrosis(HA,LN,PC Ⅲ)index were determined by ELISA.Liver pathology and fibrosis were observed using HE and Masson staining,and col-lagen volume fraction was calculated.The expression of cGAS/STING pathway related proteins in liver tissue was detected by Western blot.Results Vanillin could improve liver pathology and fibrosis,increase body weight,and decrease liver weight,ALT,AST,ALP,LDH,TBIL,TBA,HA,LN,PC Ⅲ,collagen volume fraction,cGAS,STING protein in IC rats(P＜0.05).Overexpression of cGAS could reverse the effects of vanillin on the above indicators in IC rats(P＜0.05).Conclusions Vanillin may improve liver function,IC,liver fibrosis,and liver tissue damage in IC rats by downregulating the cGAS/STING signaling pathway.
姜宁;蒲兰香;黄峰;王艳;裴鑫;宋均亚;张恩胜
青岛大学附属山东省妇幼保健院儿科青岛大学附属山东省妇幼保健院药剂科武警山东省总队医院特色专业一科,山东济南 250014
香兰素环鸟苷酸腺苷酸合成酶干扰素基因刺激因子肝内胆汁淤积肝损伤肝纤维化
vanillincyclic guanylate adenylate syn-thetasestimulator of interferon geneintrahepatic cho-lestasisliver injuryliver fibrosis
《中国药理学通报》 2024 (009)
1695-1700 / 6
山东省医药卫生科技发展计划项目(No 2022WS119)
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