Guizhou University of Traditional Chinese Medicine, Graduate School, Guiyang 550025, China.
Department of Clinical medical laboratory, Department of Gastroenterology, the Second Affiliated Hospital of Guizhou University of Traditional Chinese Medicine, Guiyang 550003, China.
J Tradit Chin Med. 2024 Apr;44(2):277-288. doi: 10.19852/j.cnki.jtcm.20231018.001.
OBJECTIVE: To analyze the effect and molecular mechanism of Gehua Jiejiu Dizhi decoction (, GJDD) on alcoholic fatty live disease (AFLD) by using proteomic methods. METHODS: The male C57BL/6J mouse were randomly divided into four groups: control group, model group, GJDD group and resveratrol group. After the AFLD model was successfully prepared by intragastric administration of alcohol once on the basis of the Lieber-DeCarli classical method, the GJDD group and resveratrol group were intragastrically administered with GJDD (4900 mg/kg) and resveratrol (400 mg/kg) respectively, once a day for 9 d. The fat deposition of liver tissue was observed and evaluated by oil red O (ORO) staining. 4DLabel-free quantitative proteome method was used to determine and quantify the protein expression in liver tissue of each experimental group. The differentially expressed proteins were screened according to protein expression differential multiples, and then analyzed by Gene ontology classification and Kyoto Encyclopedia of Genes and Genomes pathway enrichment. Finally, expression validation of the differentially co-expressed proteins from control group, model group and GJDD group were verified by targeted proteomics quantification techniques. RESULTS: In semiquantitative analyses of ORO, all kinds of steatosis (ToS, MaS, and MiS) were evaluated higher in AFLD mice compared to those in GJDD or resveratrol-treated mice. 4DLabel-free proteomics analysis results showed that a total of 4513 proteins were identified, of which 3763 proteins were quantified and 946 differentially expressed proteins were screened. Compared with the control group, 145 proteins were up-regulated and 148 proteins were down-regulated in the liver tissue of model group. In addition, compared with the model group, 92 proteins were up-regulated and 135 proteins were down-regulated in the liver tissue of the GJDD group. 15 differentially co-expressed proteins were found between every two groups (model group control group, GJDD group vs model group and GJDD group control group), which were involved in many biological processes. Among them, 11 differentially co-expressed key proteins (Aox3, H1-5, Fabp5, Ces3a, Nudt7, Serpinb1a, Fkbp11, Rpl22l1, Keg1, Acss2 and Slco1a1) were further identified by targeted proteomic quantitative technology and their expression patterns were consistent with the results of 4D label-free proteomic analysis. CONCLUSIONS: Our study provided proteomics-based evidence that GJDD alleviated AFLD by modulating liver protein expression, likely through the modulation of lipid metabolism, bile acid metabolism and with exertion of antioxidant stress.
目的:采用蛋白质组学方法分析膈下逐瘀汤对酒精性脂肪肝(AFLD)的作用及分子机制。
方法:雄性 C57BL/6J 小鼠随机分为 4 组:对照组、模型组、膈下逐瘀汤组和白藜芦醇组。在 Lieber-DeCarli 经典方法的基础上,通过灌胃一次性给予酒精成功制备 AFLD 模型后,膈下逐瘀汤组和白藜芦醇组分别灌胃膈下逐瘀汤(4900mg/kg)和白藜芦醇(400mg/kg),每天 1 次,共 9d。通过油红 O(ORO)染色观察和评价肝组织的脂肪沉积。采用 4DLabel-free 无标记定量蛋白质组学方法测定并定量各组实验动物肝组织中的蛋白质表达。根据蛋白质表达差异倍数筛选差异表达蛋白,然后进行基因本体分类和京都基因与基因组百科全书通路富集分析。最后,通过靶向蛋白质组学定量技术验证对照组、模型组和膈下逐瘀汤组差异共表达蛋白的表达验证。
结果:在 ORO 的半定量分析中,与膈下逐瘀汤或白藜芦醇治疗组相比,AFLD 小鼠的各种脂肪变性(ToS、MaS 和 MiS)评分均较高。4DLabel-free 蛋白质组学分析结果表明,共鉴定出 4513 种蛋白质,其中 3763 种蛋白质被定量,筛选出 946 种差异表达蛋白。与对照组相比,模型组肝组织中有 145 种蛋白上调,148 种蛋白下调。此外,与模型组相比,膈下逐瘀汤组肝组织中有 92 种蛋白上调,135 种蛋白下调。在每组两两之间(模型组与对照组、膈下逐瘀汤组与模型组和膈下逐瘀汤组与对照组)共发现 15 种差异共表达蛋白,这些蛋白参与了许多生物学过程。其中,11 种差异共表达关键蛋白(Aox3、H1-5、Fabp5、Ces3a、Nudt7、Serpinb1a、Fkbp11、Rpl22l1、Keg1、Acss2 和 Slco1a1)通过靶向蛋白质组学定量技术进一步鉴定,其表达模式与 4D 无标记蛋白质组学分析结果一致。
结论:本研究提供了基于蛋白质组学的证据,表明膈下逐瘀汤通过调节肝脏蛋白表达缓解 AFLD,可能通过调节脂质代谢、胆汁酸代谢和发挥抗氧化应激作用。
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