中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (37): 5955-5960.doi: 10.3969/j.issn.2095-4344.2015.37.010

• 组织构建细胞学实验 cytology experiments in tissue construction • 上一篇    下一篇

膝骨性关节炎差异表达蛋白血清标记物筛选:iTRAQ技术的重要性

梁海波1,苏 伟1,罗世兴2,董桂甫2,龙光华2,覃育接2   

  1. 1广西医科大学第一附属医院,广西壮族自治区南宁市  530021; 2广西医科大学第九附属医院,广西壮族自治区北海市  536000
  • 出版日期:2015-09-10 发布日期:2015-09-10
  • 通讯作者: 罗世兴,博士,副教授,副主任医师,硕士生导师,广西医科大学第九附属医院,广西壮族自治区北海市 536000
  • 作者简介:梁海波,男,1987年生,广西壮族自治区桂林市人,汉族,广西医科大学在读硕士,主要从事创伤骨科、关节外科研究。
  • 基金资助:

    广西科技厅青年基金(2012GXNSFBA053124);国家自然科学基金(81460345)

iTRAQ technology is important to screen serum markers of differentially expressed proteins in knee osteoarthritis

Liang Hai-bo1, Su Wei1, Luo Shi-xing2, Dong Gui-fu2, Long Guang-hua2, Qin Yu-jie2   

  1. 1First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China; 2Ninth Affiliated Hospital of Guangxi Medical University, Beihai 536000, Guangxi Zhuang Autonomous Region, China
  • Online:2015-09-10 Published:2015-09-10
  • Contact: Luo Shi-xing, M.D., Associate professor, Associate chief physician, Master’s supervisor, Ninth Affiliated Hospital of Guangxi Medical University, Beihai 536000, Guangxi Zhuang Autonomous Region, China
  • About author:Liang Hai-bao, Studying for master’s degree, First Affiliated Hospital of Guangxi Medical University, Nanning 530021, Guangxi Zhuang Autonomous Region, China
  • Supported by:

    the Youth Fund of Guangxi Science and Technology Department, No. 2012GXNSFBA053124; the National Natural Science Foundation of China, No. 81460345

摘要:

背景:在临床上对于早期膝关节骨性关节炎尚缺乏有效的诊断方式。蛋白质组学是从整体的角度分析细胞的所有蛋白质组成、表达水平及修饰状态的学科,可以了解蛋白与蛋白间的相互作用及联系,从而揭示蛋白功能与细胞生命活动的规律。

目的:通过对骨性关节炎K/L分级的各阶段的血清样本进行ITRAQ定量蛋白组学分析检测,以发现骨性关节炎各个时期的的潜在分子标志物。

方法:收集膝关节骨性关节炎患者60例,参照Kellgren-Lawrence(K-L)分级标准,分为K-L 0、Ⅱ、Ⅳ级的亚组,每个亚组随机选取10例男性与10例女性。去除血清高丰度蛋白,进行稳定同位素116、117、118的iTRAQ标记、反相色谱柱分离、质谱检测及Swissport数据库检索;再利用生物信息学软件进行分析。

结果与结论:通过对不同样品的iTRAQ肽段实验标记、Q-star质谱鉴定和MASCOT搜库,共筛选出有意义差异蛋白169个,K-L 0级与K-L Ⅳ级差异蛋白153个;K-L 0级与K-L Ⅱ级差异蛋白153个;K-L Ⅱ级与K-L Ⅳ级差异蛋白145个。结果表明应用iTRAQ技术可筛选出与骨性关节炎发生发展的多个差异蛋白,提示iTRAQ技术对于骨性关节炎蛋白质组学血清生物标记物的研究有重要意义。

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

关键词: 组织构建, 骨组织工程, 骨性关节炎, iTRAQ, 血清生物标志物, 组织工程, 国家自然科学基金

Abstract:

BACKGROUND: There is lack of effective diagnostic methods for early knee osteoarthritis. Proteomics refers to the large-scale experimental analysis of proteomes from the overall level of intracellular protein compositioon, expression and modification, based on which, we can understand protein-protein interaction and relationship, thereby revealing protein functions and cell activity patterns.
OBJECTIVE: To apply the isobaric tags for relative and absolute quantitation (iTRAQ) to identify proteins differentially in serums of osteoarthritis Kellgren-Lawrence classification at each stage, and to find out potential molecular markers at each stage of osteoarthritis.
METHODS: Sixty patients with knee osteoarthritis were enrolled, and according to Kellgren-Lawrence (K-L) grading, they were subdivided into K-L 0, II and IV groups. There were 10 males and 10 females randomly selected in each group. Proteins differentially regulated in serums were identified by the stable isotopes 116, 117, 118 of the iTRAQ labeled, reversed-phase column separation, mass spectrometry and Swissport database search, after the serums were subjected to high abundance proteins depletion. Finally, we analyzed the proteins identified by using bioinformatics software.
RESULTS AND CONCLUSION: Totally 169 proteins were identified through iTRAQ peptides experiments of different sample tags, Q-star mass spectrum identification and MASCOT library search. 153 proteins were identified as K-L 0 to K-L IV, 153 proteins were identified as K-L 0 to K-L II, and 145 proteins were identified as K-L II to K-L IV. iTRAQ technology may help to identify novel serum markers for early diagnosis of knee osteoarthritis, indicating iTRAQ technology for proteomics serum biomarkers of osteoarthritis study has good application prospect.

中国组织工程研究杂志出版内容重点:组织构建;骨细胞;软骨细胞;细胞培养;成纤维细胞;血管内皮细胞;骨质疏松组织工程

Key words: Osteoarthritis, Proteomics, Adiponectin

中图分类号: