中国组织工程研究 ›› 2023, Vol. 27 ›› Issue (28): 4554-4558.doi: 10.12307/2023.683

• 组织构建综述 tissue construction review • 上一篇    下一篇

运动损伤滑膜组织转录组数据分析及骨关节炎关键通路和特征基因

付东阁,何静子   

  1. 延安大学体育学院,陕西省延安市   716000
  • 收稿日期:2022-08-22 接受日期:2022-10-19 出版日期:2023-10-08 发布日期:2023-01-29
  • 通讯作者: 何静子,博士,延安大学体育学院,陕西省延安市 716000
  • 作者简介:付东阁,男,1989年生,山东省平度市人,汉族,2021年韩国又石大学毕业,博士,主要从事运动损伤骨关节炎药理学的研究。
  • 基金资助:
    延安大学博士科研启动基金(YDBK2022-20),项目负责人:付东阁

Key pathways and hub genes of osteoarthritis based on transcriptome data of sports injury synovial tissue

Fu Dongge, He Jingzi   

  1. Physical Culture Institute, Yanan University, Yanan 716000, Shaanxi Province, China
  • Received:2022-08-22 Accepted:2022-10-19 Online:2023-10-08 Published:2023-01-29
  • Contact: He Jingzi, PhD, Physical Culture Institute, Yanan University, Yanan 716000, Shaanxi Province, China
  • About author:Fu Dongge, PhD, Physical Culture Institute, Yanan University, Yanan 716000, Shaanxi Province, China
  • Supported by:
    Doctoral Research Startup Fund of Yanan University, No. YDBK2022-20 (to FDG)

摘要:

文题释义:

Cytoscape插件CytoHubba:Hub基因通常都是具有代表性的一些基因,Cytohubba是Cytoscape软件用于识别hub节点的插件,先用STRING网站构建PPI网络,当存在上百个基因的对应关系时,就需要再利用插件通过拓扑网络算法给每个基因赋值,排序发现其关键基因(hub gene)和子网络。cytoHubba根据nodes在网络中的属性进行排名。它提供了11种拓扑分析方法,包括Degrre,Edge Percolated component(EPC),Maximum neighborhood component(MNC),Density of Maximum Neighborhood Component(DNNC),Maximal Clique Centrality(MCC),six centralities(Botteleneck,EcCentricity,Closeness,Radiality,Betweenness,Stress),得分越高越关键。
GEO2R:是一个交互式web工具,针对 GEO 数据库中表达谱芯片进行进一步差异分析的工具,利用这个工具可以比较 GEO 系列数据中的两组或更多组样品,获得差异性表达基因。GEO2R是使用GEOquery和limma R包对原始提交者提供的处理过的数据表执行比较。GEOR2 分析工具同时可以获得火山图、平均差图、 UMAP图、韦恩图、表达密度图、P 值直方图、样本分位数图、平均方差趋势图。

背景:研究表明,骨关节炎与滑膜炎密不可分,因此基于滑膜组织探索骨关节炎发病机制具有重要的临床意义。
目的:基于生物信息学方法分析骨关节炎患者滑膜组织与正常人滑膜组织转录组数据,从滑膜角度探索骨关节炎的诊疗靶点,并为骨关节炎提供后续研究思路。
方法:从Gene Expression Omnibus (GEO) 数据库中筛选含有骨关节炎滑膜组织和健康滑膜组织的数据集,得到GSE55457和GSE55235数据集,2个数据集均包含有10个骨关节炎滑膜样本和健康者滑膜样本。用GEO2R在线工具分别对GSE55457和GSE55235数据集进行差异表达分析,取校正后P值(adj.P) < 0.05的基因并通过在线工具仙桃学术取2个数据集共同的上调和下调差异表达基因。并对差异基因进行GO功能注释和KEGG通路富集分析。利用STRING数据库对差异基因进行核心蛋白互作网络分析(PPI),并使用Cytoscape软件中的插件CytoHubba中的7种算法(BottleNeck,Clossness,Degree,DNNC,EPC,NNC和MCC)对STRING结果进行可视化,每种算法取分数最高的前10个基因,最后挑选7种算法的交集基因作为骨关节炎的关键基因。

结果与结论:①从上述2个数据集中获得200个共同上调差异基因和124个共同下调差异基因。将得到的324个差异基因进行GO分析,结果表明差异基因主要与DNA结合转录因子结合、RNA聚合酶Ⅱ特异性DNA结合转录因子结合、poly(A) 结合、血小板源性生长因子受体结合、糖皮质激素受体结合等有关;而KEGG结果显示差异基因主要富集在MAPK 信号通路、胰岛素信号通路、破骨细胞分化、甲状旁腺激素的合成、分泌和作用等通路上。②PPI蛋白交互网络分析筛选得到2个骨关节炎关键基因,即热休克蛋白90αA类成员1(HSP90AA1)和细胞因子信号转导抑制因子3(SOCS3)。③结果说明,HSP90AA1和SOCS3在骨关节炎滑膜和健康者滑膜组织中差异表达,并可能成为骨关节炎的监测标志物和治疗靶点,这一发现为骨关节炎的分子机制研究提供了思路。 

https://orcid.org/0000-0002-4848-5495 (付东阁) 

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: 骨关节炎, 滑膜, 生物信息学, 差异表达基因, 关键基因, 治疗靶点

Abstract: BACKGROUND: Osteoarthritis is inseparable from synovitis, so it has important clinical significance to explore osteoarthritis pathogenesis based on synovial tissue. 
OBJECTIVE: To explore the diagnosis and therapeutic targets of osteoarthritis from the perspective of synovium through analyzing the transcriptome data of synovial tissues between patients with osteoarthritis and healthy controls based on bioinformatics methods, as well as to provide follow-up research ideas for osteoarthritis. 
METHODS: Datasets containing normal and osteoarthritis synovial tissues were screened from Gene Expression Omnibus (GEO) database. GSE55457 and GSE55235 were selected, both of which contained 10 synovial tissue samples of osteoarthritis and 10 synovial tissue samples of healthy controls. GEO2R was utilized to perform differential gene expression analysis of GSE55457 and GSE55235 datasets, and genes with adjusted P values (adj.P) < 0.05 were collected. The online tool Xiantao Academy was used to obtained common up-regulated and down-regulated differentially expressed genes in the two datasets. GO functional annotation and KEGG pathway enrichment analysis for differentially expressed genes were performed. The STRING database was used to perform protein-protein interaction analysis. The results were visualized in Cytoscape software through CytoHubba App by 7 algorithms (BottleNeck, Clossness, Degree, DNNC, EPC, NNC and MCC). The top 10 genes with the highest scores were picked out for each algorithm, and the intersected genes of 7 algorithms were selected as the hub genes of osteoarthritis. 
RESULTS AND CONCLUSION: 200 common up-regulated differential genes and 124 common down-regulated differential genes were gained from the above two datasets. The results of GO analysis for the 324 differential genes showed that these genes were mainly associated with the DNA-binding transcription factor binding, RNA polymerase II specific DNA-binding transcription factor binding, poly(A) binding, platelets-derived growth factor receptor binding, glucocorticoid receptor binding, etc. KEGG analysis showed that the differential genes were mainly enriched in MAPK signaling pathway, insulin signaling pathway, osteoclast differentiation as well as parathyroid hormone synthesis, secretion and action pathways. Protein-protein interaction network analysis screened two hub genes of osteoarthritis, namely heat shock protein 90α class A member 1 (HSP90AA1) and suppressors of cytokine signaling 3 (SOCS3). These findings confirm that HSP90AA1 and SOCS3 are differentially expressed in synovial tissue of patients with osteoarthritis and healthy subjects, and may serve as surveillance markers and therapeutic target, which provide sound ideas for further study of molecular mechanisms of osteoarthritis. 

Key words: osteoarthritis, synovial membrane, bioinformatics, differentially expressed gene, hub gene, therapeutic target

中图分类号: