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文章编号:1672-6987(2026)02-0044-08;DOI:10. 16351/j. 1672-6987. 2026. 02. 007
张 美,董可红,郭传龙* (青岛科技大学 化工学院,山东 青岛 266042)
摘 要:通过构建负载根皮素的纳米药物,研究其在四氯化碳(CCl4)诱导的急性肝损伤(ALI) 中的作用,并探索其通过调控 cGAS-STING 信号通路保护 ALI的作用机制。采用薄膜水化法 制备 HS15-根皮素纳米胶束(HS15-Phl),进行表征分析;构建 CCl4 诱导的小鼠 ALI 模型,进 行血清相关生化分析;通过 H&E 染色评价小鼠肝脏的病理变化;RT-qPCR 检测相关炎症因 子及氧化因子如 IL-6、IL-1β、TNF-α、SOD 的表达,检测 cGAS、STING、INF-γ 等 mRNA 水平 以及 mtDNA 水平。本研究所制备的 HS15-Phl 纳米胶束包封率高,粒径为 8. 40 nm,Zeta 电位 为−17. 62 mV。HS15-Phl 纳米胶束可保护 CCl4诱导的小鼠 ALI,并提高急性肝损伤小鼠肝 组织 SOD 的活性,显著降低肝组织中 TNF-α、IL-1β 和 IL-6 水平。作用机制研究结果显示, CCl4诱导的 ALI 小鼠肝组织中 mtDNA 释放增加,cGAS-STING 信号通路被激活,HS15-Ph1 纳米胶束可抑制 mtDNA 释放和 cGAS-STING 通路的活化。HS15-Phl 纳米胶束可能通过抑 制 cGAS-STING 通路保护 CCl4诱导的小鼠 ALI。
关键词:根皮素;急性肝损伤;四氯化碳;纳米胶束; cGAS-STING
中图分类号:TQ 207+. 2 文献标志码:A
引用格式:张美,董可红,郭传龙 . 根皮素纳米胶束对 CCl4诱导的急性肝损伤的保护作用及 机制研究[J]. 青岛科技大学学报(自然科学版),2026,47(2):44-51.
ZHANG Mei, DONG Kehong, GUO Chuanlong. Protective effect of phloretin-loaded nano⁃ micelles on CCl4-induced acute liver injury[J]. Journal of Qingdao University of Science and Technology(Natural Science Edition),2026,47(2):44-51.
Protective Effect of Phloretin-Loaded Nanomicelles on CCl4-Induced Acute Liver Injury
ZHANG Mei,DONG Kehong,GUO Chuanlong (College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract:To investigate the role of phloretin -loaded nanomedicine in carbon tetrachloride (CCl4)-induced acute liver injury (ALI) and explore its mechanism of action in protecting against ALI by regulating the cGAS-STING signaling pathway. HS15-phloretin nanomicelles (HS15-Phl) were constructed using a thin film hydration method and characterized. CCl4- induced mice model of ALI was established, and serum transaminase ALT and AST levels in mice were measured. Liver pathological changes were observed using H&E staining. The levels of inflammatory factors IL-6, IL-1β, TNF- α, oxidative stress factor SOD, cGAS, STING, INF- γ, and mtDNA levels in mice liver tissues were detected using RT-qPCR. Results HS15-Phl nanomicelles exhibited high encapsulation efficiency, with a particle size of 8. 40 nm and a Zeta potential of −17. 62 mV. In vivo results showed that HS15-Phl nanomicelles increased the activity of SOD in liver tissue of acute liver injury mice and significantly reduce TNF-α, IL-1β and IL-6 levels. The mechanism study showed that CCl4 induced increase in mtDNA release and activation of the cGAS-STING signaling pathway in the liver tissue of ALI mice. HS15-Ph1 nanomicelles inhibited mtDNA release and activation of the cGASSTING pathway. Phloretin-loaded nanomicelles enhanced the hepatoprotective effect of phloretin on CCl4-induced ALI in vivo, possibly through the inhibition of the mtDNA -cGAS-STING signaling pathway.
Key words:phloretin; acute liver injury; carbon tetrachloride; nanomicelles; cGAS-STING
收稿日期:2025-09-24
基金项目:山东省自然科学基金项目(ZR2020QH359).
作者简介:张 美(1992—),女,硕士研究生 . * 通信联系人 .