首页|积雪草苷通过调节钙信号稳态缓解肝纤维化

积雪草苷通过调节钙信号稳态缓解肝纤维化

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肝纤维化是慢性肝病向肝硬化和肝细胞癌进展的重要过程.然而,目前尚未有临床批准的特效药物用于治疗肝纤维化.该研究旨在探究积雪草苷的抗肝纤维化作用,并阐明其作用机制.活化的肝星状细胞在肝纤维化的发生和发展过程中起着关键作用.在体外实验中,积雪草苷可显著抑制人肝星状细胞系LX-2的活化、增殖和迁移;之后对积雪草苷处理前后的肝星状细胞进行转录组测序揭示其作用机制,结果提示积雪草苷的抗纤维化作用依赖于钙信号通路;进一步的实验证实积雪草苷诱导胞质钙下调同时促进线粒体钙超载.此外,积雪草苷还可促进细胞凋亡、抑制炎症和降低活性氧水平.最后,在四氯化碳诱导的肝纤维化模型中,积雪草苷可显著缓解肝胶原沉积和钙通路异常,并抑制肝纤维化的发展.综上所述,积雪草苷通过介导钙信号通路改善肝纤维化进程,该研究为临床治疗肝纤维化疾病提供了有前景的候选化合物.
Asiaticoside Alleviates Liver Fibrosis by Regulating Calcium Signaling Homeostasis
Liver fibrosis is a vital determinant in the development of chronic liver diseases towards liver cirrhosis and hepatocellular carcinoma.However,there are currently no approved specific agents for effectively halting liver fibrosis.Therefore,the aim of this study was to investigate the potential role of Asiaticoside in com-bating liver fibrosis and to elucidate the underlying mechanisms.In vitro experiments showed that Asiaticoside markedly inhibited the human LX-2 cells viability and migration,which are known to be participate in fibrosis de-velopment.RNA-sequencing was performed on HSCs following Asiaticoside administration,which revealed that the antifibrotic effects of Asiaticoside depend on calcium signaling pathways.Importantly,Asiaticoside induced cytosolic calcium down-regulation while mitochondrial calcium overload.In addition,Asiaticoside also promoted apoptosis,inhibited inflammation and reduced ROS(reactive oxygen species)levels.Asiaticoside significantly alle-viated both hepatic collagen deposition and calcium pathways abnormalities,and inhibited the development of liver fibrosis in the CC14(carbon tetrachloride)-induced mouse models.In summary,Asiaticoside ameliorated liver fibro-sis by calcium signaling pathways,which provides a promising candidate for the clinical treatment of liver fibrosis.

liver fibrosisasiaticosidecalcium signalingmitochondrial calcium overload

王磊杰、林啟浩、林佳杰、王佳雪、庄冬瑞、金园庭、闫志斌

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中国计量大学生命科学学院,杭州 310018

浙江理工大学生命科学与医药学院,浙江省家蚕生物反应器和生物医药重点实验室,杭州 310018

肝纤维化 积雪草苷 钙信号通路 线粒体钙超载

国家自然科学基金国家自然科学基金浙江省自然科学基金浙江省自然科学基金

8177017682204492LD22H310004LTGY24H030005

2024

中国细胞生物学学报
中国科学院上海生命科学研究院,生物化学与细胞生物学研究所,中国细胞生物学学会

中国细胞生物学学报

CSTPCD
影响因子:0.554
ISSN:1674-7666
年,卷(期):2024.46(6)
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