中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (24): 3795-3802.doi: 10.12307/2023.641

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

牛膝醇提物诱导兔骨髓间充质干细胞软骨分化的蛋白组学分析

马笃军1,2,朱厚均2,刘乐诗2, 彭力平1,赵  静2,廖州伟1   

  1. 1广州中医药大学第四临床医学院,广东省深圳市   518033;2广州中医药大学,广东省广州市   510006
  • 收稿日期:2022-03-28 接受日期:2022-08-23 出版日期:2023-08-28 发布日期:2023-01-18
  • 通讯作者: 马笃军,硕士,副主任医师,硕士研究生导师,广州中医药大学第四临床医学院,广东省深圳市 518033;广州中医药大学,广东省广州市 510006
  • 作者简介:马笃军,男,1985年生,湖南省郴州市人,汉族,2013年湖南中医药大学毕业,硕士,副主任医师,硕士研究生导师,主要从事中医药治疗骨关节疾患及干细胞修复软骨损伤的研究。
  • 基金资助:
    国家自然科学基金项目(81804124),项目负责人:马笃军

Proteomic analysis on cartilage differentiation of rabbit bone marrow mesenchymal stem cells induced by Achyranthes bidentata alcohol extract

Ma Dujun1, 2, Zhu Houjun2, Liu Leshi2, Peng Liping1, Zhao Jing2, Liao Zhouwei1   

  1. 1The Fourth Clinical Medical College of Guangzhou University of Chinese medicine, Shenzhen 518033, Guangdong Province, China; 2Guangzhou University of Chinese medicine, Guangzhou 510006, Guangdong Province, China
  • Received:2022-03-28 Accepted:2022-08-23 Online:2023-08-28 Published:2023-01-18
  • Contact: Ma Dujun, Master, Associate chief physician, Master’s supervisor, The Fourth Clinical Medical College of Guangzhou University of Chinese medicine, Shenzhen 518033, Guangdong Province, China; Guangzhou University of Chinese medicine, Guangzhou 510006, Guangdong Province, China
  • About author:Ma Dujun, Master, Associate chief physician, Master’s supervisor, The Fourth Clinical Medical College of Guangzhou University of Chinese medicine, Shenzhen 518033, Guangdong Province, China; Guangzhou University of Chinese medicine, Guangzhou 510006, Guangdong Province, China
  • Supported by:
    the National Natural Science Foundation of China, No. 81804124 (to MDJ)

摘要:

文题释义:

蛋白组学:是以蛋白质组为研究对象,研究细胞、组织或生物体蛋白质组成及其变化规律的科学,本质上指的是在大规模水平上研究蛋白质的特征,包括蛋白质的表达水平、翻译后的修饰、蛋白与蛋白相互作用等,由此获得在蛋白质水平上对疾病发生、细胞代谢等过程的整体而全面的认识。
骨髓间充质干细胞:也称为骨髓基质成纤维细胞,是一类起源于中胚层的成体干细胞,具有自我更新及多向分化潜能,可根据所处的微环境不同,进行细胞迁移、定植、增殖与分化,其中分化潜能属于目前的研究热点,常见分化为多种间质组织,如血管、脂肪、韧带、骨骼、软骨等。

背景:前期研究发现牛膝醇提物具有诱导骨髓间充质干细胞定向软骨细胞分化的作用,但具体作用蛋白靶点和网络机制不详。
目的:观察牛膝醇提物诱导兔骨髓间充质干细胞软骨分化的蛋白质组学分析及蛋白质相互作用网络构建。
方法:采用密度梯度离心联合细胞贴壁法分离培养新西兰大白兔骨髓间充质干细胞,取第3代细胞随机分成5组:空白组、对照组、牛膝醇提物低、中、高剂量组,连续成软骨诱导培养21 d后,用qRT-PCR检测Ⅱ型胶原mRNA表达及甲苯胺蓝染色鉴定软骨细胞形成,应用绝对定量同位素标记(iTRAQ)结合双向液相色谱-串联质谱(2DLC-MS/MS)技术对各组差异表达蛋白质进行鉴定,并对差异蛋白进行GO分析、KEGG分析及蛋白质网络相互作用分析。

结果与结论:①qRT-PCR结果显示牛膝醇提物高剂量组较其他组Ⅱ型胶原mRNA表达明显增高(P < 0.05),牛膝醇提物高剂量组甲苯胺蓝染色阳性,蛋白组学分析共鉴定到1 354个差异蛋白点,上调蛋白633个,下调蛋白721个。②根据qRT-PCR结果对空白组、牛膝醇提物高剂量组、对照组3组差异表达蛋白进行生物信息分析。GO分析发现这些差异表达蛋白参与代谢、细胞分化、细胞周期与凋亡、炎症反应、免疫调控、氧化应激、磷酸化、泛素化、癌相关等;KEGG分析获得与骨关节病最相关的10个典型信号通路:白细胞介素17信号通路,Toll样受体信号通路,Wnt信号通路,PI3K-Akt信号通路,mTOR 信号通路,Jak-STAT信号通路,NF-kappa B信号通路,MAPK信号通路,AMPK信号通路,HIF-1信号通路;根据组间差异蛋白,使用Cytoscape3.6.0软件成功构建蛋白互作网络图。③结果表明,牛膝醇提物可以通过调控氧化、细胞周期与凋亡、细胞结构改变、细胞分化、代谢及炎症损伤等环节诱导兔骨髓间充质干细胞成软骨分化,具有多靶点、多中心的网络调控作用,其具体作用机制有待进一步研究。

https://orcid.org/0000-0002-8050-2849 (马笃军) 

中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

关键词: 牛膝醇提物, 蛋白组学, 骨髓间充质干细胞, 软骨分化, iTRAQ技术

Abstract: BACKGROUND: Preliminary studies have found that Achyranthes bidentata alcohol extract can induce the directional chondrocyte differentiation of bone marrow mesenchymal stem cells, but the specific protein targets and network mechanisms are unknown.  
OBJECTIVE: To observe the proteomic analysis of cartilage differentiation of rabbit bone marrow mesenchymal stem cells induced by Achyranthes bidentata alcohol extract and the construction of protein interaction network.
METHODS: Bone marrow mesenchymal stem cells of New Zealand white rabbits were isolated and cultured by density gradient centrifugation combined with bone marrow adherent method. Passage 3 cells were randomly divided into five groups: blank group, control group, low-dose Achyranthes bidentata alcohol extract group, medium-dose Achyranthes bidentata alcohol extract group, and high-dose Achyranthes bidentata alcohol extract group. After continuous induction and culture for 21 days, qRT-PCR was used to detect the expression of type II collagen mRNA and toluidine blue staining was used to identify the formation of chondrocytes. The differentially expressed proteins of different groups were identified by absolute quantitative isotope labeling (iTRAQ) combined with two-way liquid chromatography tandem mass spectrometry, and the differentially expressed proteins were analyzed by GO analysis, KEGG analysis and protein interaction network analysis.  
RESULTS AND CONCLUSION: (1) The qRT-PCR results showed that the expression of type II collagen mRNA in the high-dose Achyranthes bidentata alcohol extract group was significantly higher than that in other groups (P < 0.05), and toluidine blue staining displayed positive reaction in the high-dose Achyranthes bidentata alcohol extract group. A total of 1 354 differential protein spots were identified by proteomic analysis, including 633 up-regulated proteins and 721 down-regulated proteins. (2) According to the results of qRT-PCR, the differentially expressed proteins of blank group, high-dose Achyranthes bidentata alcohol extract group and control group were analyzed. Go analysis showed that these differentially expressed proteins were involved in metabolism, cell differentiation, cell cycle and apoptosis, inflammatory response, immune regulation, oxidative stress, phosphorylation, ubiquitination, cancer and so on. KEGG analysis obtained 10 typical signal pathways most related to osteoarthritis: interleukin-17 signaling pathway, Toll like receptor signaling pathway, Wnt signaling pathway, PI3K-Akt signaling pathway, mTOR signaling pathway, JAK-STAT signaling pathway, NF-kappa B signaling pathway, MAPK signaling pathway, AMPK signaling pathway, and HIF-1 signaling pathway. According to the protein difference between groups, Cytoscape 3.6.0 software was used to successfully construct protein interaction network diagram. (3) These results suggest that Achyranthes bidentata alcohol extract can induce chondrogenic differentiation of rabbit bone marrow mesenchymal stem cells by regulating oxidation, cell cycle and apoptosis, changes in cell structure, cell differentiation, metabolism and inflammatory injury. It has multi-target and multi-center network regulation, and its specific mechanism needs to be further studied.

Key words: Achyranthes bidentata alcohol extract, proteomics, bone marrow mesenchymal stem cell, cartilage differentiation, iTRAQ technology

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