驼乳对小鼠急性酒精性肝损伤的干预作用
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(1.内蒙古农业大学乳品生物技术与工程教育部重点实验室 呼和浩特 010018;2.内蒙古骆驼研究院 内蒙古阿拉善 750306)

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国家重点研发计划项目(2020YFE0203300);高层次人才引进科研启动项目(NDYB2018-48)


The Intervention of Camel Milk on Acute Alcoholic Liver Injury in Mice
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(1.Key Laboratory of Dairy Biotechnology and Bioengineering, Ministry of Education,Inner Mongolia Agriculture University, Hohhot 010018;2.Camel Research Institute of Inner Mongolia, Alashan 750306, Inner Mongolia)

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    摘要:

    目的:探讨驼乳缓解小鼠急性酒精性肝损伤的作用机制。方法:将ICR小鼠随机分为正常组(NC)、模型组(ET)、驼乳组(CM)和驼乳干预组(ET+CM),通过测定肝组织(AST和ALT)和血清指标(TNF-α、IL-10、1L-6和IL-1β)来反映驼乳对肝脏的保护作用;基于转录组学探讨驼乳发挥保肝、护肝作用的机理。结果:与ET组相比,驼乳干预降低了酒精诱导的AST、ALT、TNF-α、1L-6和IL-1β水平,增加了IL-10水平。对4组小鼠肝组织进行转录组测序,在ET组和ET+CM组中共检出1 426个差异表达基因(其中673个为上调基因,753个为下调基因)。功能注释和富集分析结果显示,差异表达基因主要显著富集在MAPK、Toll-like和NF-κB信号3条炎症通路。对CD14、TLR5、TLR9等6个代表性差异基因进行实时荧光定量PCR测定。结果显示,与模型组相比,驼乳干预后能显著降低CD14、IL-1β、IL-6、TLR5和TLR9表达量,显著升高IL-10的表达量,与转录组测序结果一致,验证了测序数据的准确性。研究结果为解析驼乳对酒精性肝损伤的分子机制奠定了良好的基础。

    Abstract:

    Objective: To explore the molecular mechanism of camel milk to relieve acute alcoholic liver injury in mice. Methods: ICR mice were randomly divided into normal group (NC), model group (ET), camel milk group (CM) and camel milk intervention group (ET+CM), and measured liver tissue (AST and ALT) and serum indexes (TNF-α, IL-10, 1L-6 and IL-1β) to reflect the protective effect of camel milk on the liver; and based on transcriptomics research methods to explore the mechanism of camel milk to protect the liver. Results: Compared with the ET group, camel milk intervention reduced the alcohol-induced AST, ALT, TNF-α, 1L-6 and IL-1β levels, and at the same time increased IL-10 levels. Furthermore, transcriptome sequencing was performed on four groups of mouse liver tissues. The results showed that a total of 1426 differentially expressed genes were detected in the ET group and the ET+CM group (673 were up-regulated genes and 753 were down-regulated genes), and then combined with gene function and enrichment analysis, it was found that the differentially expressed genes were mainly significantly enriched In the three inflammatory pathways of MAPK, Toll-like and NF-κB signaling. Six representative differential genes, including CD14, TLR5 and TLR9, were determined by real-time fluorescence quantitative PCR. The results showed that compared with the model group, the expression levels of CD14, IL-1β, IL-6, TLR5 and TLR9 were significantly decreased after camel milk intervention, and the expression levels of IL-10 were significantly increased, which was consistent with the transcriptomic sequencing results, and verified the accuracy of sequencing data. The results laid a good foundation for the analysis of the molecular mechanism of camel milk on alcoholic liver injury.

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其布勒,吉日木图,明亮.驼乳对小鼠急性酒精性肝损伤的干预作用[J].中国食品学报,2023,23(6):147-158

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  • 收稿日期:2022-06-07
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  • 在线发布日期: 2023-08-17
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