食品科学 ›› 2023, Vol. 44 ›› Issue (5): 136-142.doi: 10.7506/spkx1002-6630-20220316-174

• 营养卫生 • 上一篇    

壳寡糖对过氧化氢诱导肝细胞损伤的改善作用及机制

刘朋,侯智兴,茅洪维,李恒,龚劲松,蒋敏,许泓瑜,许正宏,史劲松   

  1. (1.糖化学与生物技术教育部重点实验室,江南大学生命科学与健康工程学院,江苏 无锡 214122;2.上海市农业科学院食用菌研究所,上海 201403;3.江南大学生物工程学院,江苏 无锡 214122;4.粮食发酵与食品生物制造国家工程研究中心,江苏 无锡 214122)
  • 发布日期:2023-03-23
  • 基金资助:
    宁夏回族自治区重点研发计划项目(2020BFH02011);江苏省高校优秀中青年教师和校长境外研修计划项目

Ameliorative Effect and Mechanism of Chitooligosaccharides on Hydrogen Peroxide-Induced Injury in Hepatic Cells

LIU Peng, HOU Zhixing, MAO Hongwei, LI Heng, GONG Jinsong, JIANG Min, XU Hongyu, XU Zhenghong, SHI Jinsong   

  1. (1. Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Life Sciences and Health Engineering, Jiangnan University, Wuxi 214122, China; 2. Institute of Edible Fungi, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China; 3. School of Biotechnology, Jiangnan University, Wuxi 214122, China; 4. National Engineering Research Center for Cereal Fermentation and Food Biomanufacturing, Wuxi 214122, China)
  • Published:2023-03-23

摘要: 目的:评估壳寡糖(chitooligosaccharides,COS)对过氧化氢(H2O2)诱导肝细胞损伤的改善作用。方法:通过H2O2建立L-02细胞氧化应激损伤模型,对活性氧(reactive oxygen species,ROS)、线粒体膜电位以及IL-6、TNF-α等病程相关基因水平进行分析。结果:COS可改善H2O2损伤L-02细胞的增殖活力、抑制线粒体膜电位下降和ROS水平升高(P<0.05)。单细胞纳米生化分析结果显示,COS处理可以平衡H2O2损伤L-02细胞的ROS水平波动幅度。另外,COS改善了炎症(IL-6、TNF-α)、凋亡(Caspase 3、Caspase 9、Bax、Bcl-2)及氧化应激(Nrf2、HO-1)相关基因转录水平,表现出抗凋亡和抗氧化应激的作用。结论:COS对H2O2损伤的L-02细胞具有保护作用,本实验可为COS的应用开发提供理论参考。

关键词: 壳寡糖;氧化应激;肝细胞;细胞凋亡;单细胞纳米生化分析

Abstract: The ameliorative effect of chitooligosaccharides (COS) on hydrogen peroxide (H2O2)-induced injury in hepatic cells was evaluated. An oxidative stress injury model was established by stimulating L-02 cells with H2O2, and the level of reactive oxygen species (ROS), mitochondrial membrane potential and related genes (IL-6 and TNF-α) were analyzed. The results showed that COS could improve the proliferation activity, and suppress the decrease in mitochondrial membrane potential and the increase in ROS level in H2O2-injured L-02 cells (P < 0.05). Single cell nano biochemical analysis showed that COS treatment balanced the fluctuation of ROS level in the cells. In addition, COS improved the transcription levels of genes related to inflammation (IL-6 and TNF-α), apoptosis (Caspase 3, Caspase 9, Bax and Bcl-2) and oxidative stress (Nrf2 and HO-1), thereby antagonizing apoptosis and oxidative stress. Conclusively, COS possess protective effects on H2O2-induced injury in L-02 cells, which lays a theoretical foundation for the application and development of COS.

Key words: chitooligosaccharides; oxidative stress; hepatic cells; apoptosis; single cell nano biochemical analysis

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