中国组织工程研究 ›› 2020, Vol. 24 ›› Issue (31): 4948-4953.doi: 10.3969/j.issn.2095-4344.2107

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

基质细胞衍生因子1诱导骨关节炎软骨细胞的miRNA表达谱分析

王国梁,李彦林,向耀宇,贾  笛,李灿章,何  璐   

  1. 昆明医科大学第一附属医院,云南省昆明市  650031

  • 收稿日期:2019-10-28 修回日期:2019-10-31 接受日期:2019-12-19 出版日期:2020-11-08 发布日期:2020-09-03
  • 通讯作者: 李彦林,教授,昆明医科大学第一附属医院,云南省昆明市 650031
  • 作者简介:王国梁,男,1986年生,山西省介休市人,汉族,2012年昆明医科大学毕业,硕士,主要从事骨关节疾病的防治。
  • 基金资助:
    国家自然科学基金项目(81960409,81760403);云南省自然科学基金重点项目[2017FE467(-007)];云南省医学领军人才培养计划项目(L-201601)

MicroRNA expression profiles of chondrocytes in osteoarthritis induced by stromal cell derived factor 1 

Wang Guoliang, Li Yanlin, Xiang Yaoyu, Jia Di, Li Canzhang, He Lu   

  1. First Affiliated Hospital of Kunming Medical University, Kunming 650031, Yunnan Province, China

  • Received:2019-10-28 Revised:2019-10-31 Accepted:2019-12-19 Online:2020-11-08 Published:2020-09-03
  • Contact: Li Yanlin, Professor, First Affiliated Hospital of Kunming Medical University, Kunming 650031, Yunnan Province, China
  • About author:Wang Guoliang, Master, First Affiliated Hospital of Kunming Medical University, Kunming 650031, Yunnan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81960409 and 81760403 ; the Natural Science Foundation of Yunnan Province, No. 2017FE467(-007) ; Medical Leading Talents Training Program of Yunnan Province, No. L-201601

摘要:

文题释义:

miRNA测序:成熟的miRNA17-24 nt的单链非编码RNA分子,通过与mRNA相互作用影响目标mRNA的稳定性及翻译,最终诱导基因沉默,调控基因表达、细胞生长、发育等生物学过程。基于第2代测序技术的microRNA测序,可以一次性获得数百万条microRNA序列,能够快速鉴定出不同组织、不同发育阶段、不同疾病状态下已知和未知的microRNA及其表达差异,为研究microRNA对细胞进程的作用及其生物学影响提供了有力工具。

差异表达miRNA聚类分析:聚类分析用于判断差异基因在不同实验条件下的表达模式,可通过将表达模式相同或相近的基因聚集成类,从而识别未知基因的功能或已知基因的未知功能,同类基因可能具有相似的功能或共同参与同一代谢过程。对筛选出的差异表达miRNA做层次聚类分析,将具有相同或相似表达行为的miRNA进行聚类。

背景:骨关节炎是多因素介导的复杂疾病,发病机制尚待挖掘,随着基因层面的不断深入研究,非编码核糖核酸调控作用显现并得以研究。通过检测软骨细胞退变miRNA表达谱变化有助于更好地理解骨软骨细胞退变的分子机制,并为骨关节炎的诊断和治疗开辟新的途径。

目的:探讨基质细胞衍生因子1刺激骨关节炎软骨细胞后miRNA表达谱变化,为基因层面延缓关节软骨退变提供实验基础。  

方法:10例膝关节骨关节炎患者于全膝关节置换手术过程中截骨后残留的软骨组织进行软骨细胞培养,随机分为实验组与对照组,两组细胞培养基为含体积分数10%胎牛血清及青链霉素双抗的高糖DMEM培养基。实验组培养基中另外加入100 μg/L基质细胞衍生因子1,对照组不做任何处理。两组软骨细胞培养48 h后,进行下一步实验用于miRNA芯片筛选和实时定量PCR验证。软骨组织标本取材前皆告知患者并征得同意,该研究符合《医疗机构管理条例》相关要求,得昆明医科大学第一附属医院伦理委员会批准。

结果与结论:miRNA基因芯片初筛共有84miRNAs发生变化,其中70miRNAs上调,14miRNAs下调。通过基因芯片筛选差异变化的miRNA,对变化显著的7 miRNA(miR-146a-5pmiR-124-3pmiR-130a-3pmiR-185-5pmiR-221-3pmiR-126-3p)进行qRT-PCR实验验证,其中miR-146a-5pmiR-124-3pmiR-126-3pqRT-PCR结果与基因芯片结果一致。结果表明,基质细胞衍生因子1刺激骨关节炎软骨细胞后循环miRNA表达谱出现明显变化,miR-146a-5pmiR-124-3p miR-126-3p可能与基质细胞衍生因子1刺激骨关节炎SDF-1/CXCR4信号通路反应有关。

ORCID: 0000-0001-8032-6147(王国梁)

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: 骨关节炎, 软骨细胞,  SDF-1/CXCR4信号通路,  基质细胞衍生因子1,  miRNA芯片筛选

Abstract:

BACKGROUND: Osteoarthritis is a complex disease caused by many factors, but its pathogenesis is yet unknown. Intensive molecular genetic research has indicated that noncoding RNA may be a potential transcriptional regulatory factor in osteoarthritis development. Exploration on differentially expressed miRNAs between osteoarthritis and normal tissue gives the clue to understand the molecular mechanism of osteoarthritis, providing a new cue for the diagnosis and treatment of osteoarthritis.

OBJECTIVE: To discuss the changes of miRNA expression profile of chondrocytes stimulated by stromal cell derived factor 1 in osteoarthritis, and provide an experimental basis for delaying articular cartilage degeneration at the genetic level.

METHODS: Residual cartilage samples from 10 patients with knee osteoarthritis who underwent total knee replacement were collected for culture of chondrocytes. The cells were then randomized into two groups: experimental group was cultured in high-glucose DMEM medium containing 10% fetal bovine serum and penicillin with the addition of 100 μg/L stromal cell derived factor 1, and control group was cultured in the medium with no other induction. At 48 hours after cell culture, the miRNA expression profiles of chondrocytes were detected, and the results were verified by fluorescence quantitative RT-PCR. The study protocol was performed in accordance with the Regulations on the Administration of Medical Institutions. All study patients gave written informed consent before collection of cartilage tissue.

RESULTS AND CONCLUSION: After preliminary screening, 84 microRNAs were altered, of which 70 were up-regulated and 14 were down-regulated. Seven microRNAs with significant changes (miR-146a-5p, miR-124-3p, miR-130a-3p, miR-185-5p, miR-221-3p, miR-126-3p) were selected by gene chip for qRT-PPCR experiment, which indicated that the qRT-PCR results of miR-146a-5p, miR-124-3p and miR-126-3p were consistent with the results of gene chip. Therefore, induction with stromal cell derived factor 1 makes the expression profile of circulating miRNA change a lot. miR-146a-5p, miR-124-3p and miR-126-3p may be related to the stromal cell derived factor 1/CXCR4 signaling pathway by which stromal cell derived factor 1 can stimulate osteoarthritis.

Key words: osteoarthritis,  chondrocytes,  SDF-1/CXCR4 signaling pathway,  stromal cell derived factor 1,  microRNA expression profiles

中图分类号: