实用肝脏病杂志 ›› 2022, Vol. 25 ›› Issue (4): 521-525.doi: 10.3969/j.issn.1672-5069.2022.04.017

• 非酒精性脂肪性肝病 • 上一篇    下一篇

非酒精性脂肪性肝病患者血浆外泌体差异蛋白分析*

张文彦, 刘芳, 刘梦露, 陈德喜, 张晶, 时红波, 于海滨   

  1. 100069 北京市 首都医科大学附属北京佑安医院国家临床药物试验机构(张文彦,刘梦露,于海滨);北京市肝病研究所(张文彦,刘芳,时红波,陈德喜);肝病三科(张晶);北京市肝炎和肝癌精准医学与转化工程技术研究中心(时红波,陈德喜)
  • 收稿日期:2021-10-20 出版日期:2022-07-10 发布日期:2022-07-14
  • 通讯作者: 于海滨,E-mail:dryuhaibin@ccmu.edu.cn
  • 作者简介:张文彦,女,33岁 硕士研究生。E-mail:zhangwenyan@ccmu.edu.cn
    共同第一作者:刘芳,女,36岁,副主任技师。E-mail:907423117@qq.com
  • 基金资助:
    *中国肝炎防治基金会王宝恩肝纤维化研究基金资助项目(编号:2020033);中国肝炎预防控制基金会基金资助项目(编号:TQGB20190050);北京市属医学科研院所公益发展改革试点项目(编号:京医研2019-6)

Plasma exosome differential proteins in patients with non-alcoholic fatty liver diseases

Zhang Wenyan, Liu Fang, Liu Menglu, et al   

  1. State Clinical Drug Trial Institution, You’an Hospital Affiliated to Capital Medical University, Beijing 100069, China
  • Received:2021-10-20 Online:2022-07-10 Published:2022-07-14

摘要: 目的 筛选非酒精性脂肪性肝病(NAFLD)患者血浆外泌体差异蛋白,分析其功能及其生物学过程,为NAFLD患者临床诊断提供参考依据。方法 2020年7月~10月我院诊治的NAFLD患者3例和健康体检者3例,采用串联质谱标签(TMT)标记定量蛋白质组学技术对血浆外泌体蛋白进行鉴定和定量分析,筛选差异蛋白并进行功能富集分析,了解其参与的生物学过程。结果 经外泌体蛋白质组学分析,共鉴定出蛋白质387种,以倍数上调>1.2倍或下调>1.2倍,且P<0.05为标准筛选出差异表达蛋白34种;健康人比,NAFLD患者上调蛋白25种,下调蛋白9种;生物信息学分析结果显示,这些蛋白主要参与了脂质的储存和代谢、免疫反应、纤维素形成等生物学过程,并与胰岛素抵抗、炎症反应、细胞损伤等信号通路密切相关。结论 采用TMT标记定量蛋白质组学技术筛选NAFLD患者差异蛋白可能为其诊治提供指引。

关键词: 非酒精性脂肪性肝病, 外泌体, 差异蛋白, 蛋白质组学

Abstract: Objective The aim of this study was to screen plasma exosome differential proteins in patients with non-alcoholic fatty liver diseases (NAFLD) and analyze their roles in biological processes. Methods Three patients with NAFLD and three healthy individuals were encountered in You'an Hospital, Capital Medical University between July and October 2020. The plasma exosome proteins were identified and quantitatively characterized by tandem mass tag (TMT) labeled quantitative proteomics. The differential proteins and their functional enrichment were screened, and the biological processes involved were analyzed. Results A total of 387 proteins were identified by exosome proteomic analysis, and out of them, 34 differentially expressed proteins were screened out according to the criteria of up-regulation > 1.2 folds or down-regulation > 1.2 folds and P<0.05; 25 up-regulation proteins and 9 down-regulation proteins were found in patients with NAFLD compared with healthy persons; the bioinformatics analysis showed that these proteins were mainly involved in lipid storage and metabolism, immune response, cellulose formation and other biological processes, and were closely related to insulin resistance, inflammatory response, cell damage and other signaling pathways. Conclusion The differential proteins screened by TMT marker quantitative proteomics might be used as serological markers for the study of NAFLD.

Key words: Nonalcoholic fatty liver disease, Exosome, Differential protein, Proteomics