中国组织工程研究 ›› 2024, Vol. 28 ›› Issue (36): 5811-5816.doi: 10.12307/2024.698

• 植入物相关大数据分析 Implant related big data analysis • 上一篇    下一篇

m6A相关基因在激素性股骨头坏死中的生物信息学分析

令狐熙涛1,桂佳琦2,梁卓智2,瓦庆德1,黄  帅2   

  1. 1遵义医科大学第二附属医院骨外科,贵州省遵义市   563000;2广州医科大学附属第二医院骨科,广东省广州市   510260
  • 收稿日期:2023-10-23 接受日期:2023-12-04 出版日期:2024-12-28 发布日期:2024-02-27
  • 通讯作者: 黄帅,博士,副主任医师,副教授,博士生导师,广州医科大学附属第二医院骨科,广东省广州市 510260
  • 作者简介:令狐熙涛,男,1995年生,贵州省遵义市人,汉族,2021年遵义医科大学毕业,硕士,医师,主要从事骨软组织修复及骨转移瘤发病机制研究。
  • 基金资助:
    广州市科技计划项目(2023A03J0405),项目负责人:黄帅;贵州省科技计划项目(黔科合基础一ZK[2021]重点007),项目负责人:瓦庆德

Bioinformatics analysis of m6A-associated genes in steroid-induced osteonecrosis of the femoral head

Linghu Xitao1, Gui Jiaqi2, Liang Zhuozhi2, Wa Qingde1, Huang Shuai2   

  1. 1Department of Orthopedics, Second Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China; 2Department of Orthopedics, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, Guangdong Province, China
  • Received:2023-10-23 Accepted:2023-12-04 Online:2024-12-28 Published:2024-02-27
  • Contact: Huang Shuai, PhD, Associate chief physician, Associate professor, Doctoral supervisor, Department of Orthopedics, Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, Guangdong Province, China
  • About author:Linghu Xitao, Master, Physician, Department of Orthopedics, Second Affiliated Hospital of Zunyi Medical University, Zunyi 563000, Guizhou Province, China
  • Supported by:
    Guangzhou Science and Technology Planning Project, No. 2023A03J0405 (to HS); a Project of Guizhou Science and Technology Plan, No. Qian Kehe Foundation-ZK[2021] 007 (to WQD)

摘要:


文题释义:

激素性股骨头坏死:是一类因长期或过量服用激素类药物后导致骨质减少及股骨头塌陷的疾病,激素性股骨头坏死患者的临床表现主要为髋关节疼痛及功能障碍。
m6A:是指在N6-腺嘌呤位点上发生的甲基化修饰,在调控干细胞成骨分化、内皮细胞血管分化、成骨细胞与破骨细胞稳态中具有重要作用。


背景:m6A修饰与股骨头坏死的发生发展相关,但在激素性股骨头坏死中的作用尚不清楚。

目的:基于GEO数据库,采用生物信息学方法分析激素性股骨头坏死中表达差异的m6A基因及互作miRNAs,探寻其潜在发病机制。
方法:在GEO数据库中检索并下载与激素性股骨头坏死相关的mRNA表达谱数据集(GSE123568),通过R软件对数据集进行差异基因筛选及GO功能、KEGG通路富集分析。识别差异基因中的m6A差异表达基因(m6A-DEGs)并对其进行GO功能与KEGG通路富集分析,比较m6A-DEGs的表达量并分析它们之间的相关性。最后通过Cytoscape构建m6A-DEGs的PPI互作网络及筛选核心基因。使用TargetScan,miRTarBase和miRBD数据库预测m6A-DEGs相关的潜在miRNAs,同时使用ChIPBase及hTFtarget数据库预测7个核心基因潜在转录因子,然后分别构建m6A-miRNA与转录因子m6A调控网络。最后使用数据集GSE74089验证7个核心m6A-DEGs的表达水平。

结果与结论:①从数据集中共筛选出2 460个差异表达的基因,其中1 455个上调,1 005个下调。②从数据集中筛选出了14个m6A-DEGs,包括3个下调和11个上调基因,m6A-DEGs在激素性股骨头坏死中的表达具有显著差异(P < 0.05),Spearman分析表明它们之间具有一定相关性。③m6A-DEGs的GO和KEGG富集分析主要集中在骨髓细胞分化与发育、免疫受体与细胞因子受体活性、破骨细胞分化、AMPK与白细胞介素17信号通路。④m6A-DEGs前7个核心基因包括YTHDF3,YTHDF1,YTHDF2,ALKBH5,METTL3,HNRNPA2B1及HNRNPC,它们在miRTarBase,miRDB和TargetScan数据库中共有44个miRNA重叠,在ChIPBase及hTFtarget数据库中共有79个重叠转录因子。⑤在GSE74089数据集中有6个核心m6A-DEGs的表达水平与GSE123568数据集一致。⑥结果证实,根据生物信息学方法筛选的7个m6A-DEGs可能通过调控多个miRNA、转录因子和AMPK及白细胞介素17信号通路表达,进而影响激素性股骨头坏死中骨髓细胞分化发育与破骨细胞分化,为进一步深入研究激素性股骨头坏死的发病机制和靶向治疗提供了数据支持和研究方向。 

https://orcid.org/0000-0003-2588-5506 (令狐熙涛);https://orcid.org/0000-0001-8308-4710 (黄帅)

中国组织工程研究杂志出版内容重点:人工关节;骨植入物;脊柱;骨折;内固定;数字化骨科;组织工程

关键词: 激素性股骨头坏死, m6A甲基化, 微小RNA, 转录因子, 生物信息学, 差异基因, 基因调控网络, 核心基因

Abstract: BACKGROUND: m6A modification has been confirmed to play an important role in the occurrence and development of osteonecrosis of the femoral head; however, the role of m6A modification patterns in steroid-induced osteonecrosis of the femoral head remains unknown. 
OBJECTIVE: Bioinformatics analysis was performed based on the Gene Expression Omnibus (GEO) database to analyze the differential expression of the m6A gene in steroid-induced osteonecrosis of the femoral head, predict the downstream targeted miRNAs, and investigate the potential pathogenesis.
METHODS: Expressing profiles of mRNA data of steroid-induced osteonecrosis of the femoral head were downloaded from GEO database (GSE123568). Differentially expressed genes (DEGs), Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed using the R software. After obtaining these differentially methylated m6A genes (m6A-DEGs), we analyzed GO function and KEGG pathway enrichment and compared the correlation among the m6A-DEGs typing according to gene expression. The protein-protein interaction network and core gene subnetwork of m6A-DEGs were constructed using Cytoscape software. The m6A-DEGs-associated potential miRNAs were predicted using the TargetScan, miRTarBase, and miRBD databases. Simultaneously, ChIPBase and hTFtarget databases were used to predict potential transcription factors of seven core genes, then m6A-miRNA and transcription factor-m6A regulatory networks were constructed separately. Finally, the expression levels of the seven core m6A-DEGs were verified by using the GSE74089 dataset.
RESULTS AND CONCLUSION: (1) A total of 2 460 common DEGs were screened out from datasets, among which 1 455 genes were upregulated and 1 005 genes were downregulated. (2) A total of 14 m6A-DEGs were identified in the datasets. Among them, 11 m6A-DEGs were up-regulated and 3 m6A-DEGs were down-regulated. Differential gene expression was considered significant for m6A-DEGs in steroid-induced osteonecrosis of the femoral head (P < 0.05). Spearman correlation analysis showed a significant correlation between m6A-DEGs. (3) GO and KEGG enrichment analysis showed that m6A-DEGs were mainly enriched in myeloid cell differentiation and development, immune and cytokine receptor activity, osteoclast differentiation, AMPK signaling pathway and interleukin-17 signaling pathway. (4) The seven core genes of m6A-DEGs contained YTHDF3, YTHDF1, YTHDF2, ALKBH5, METTL3, HNRNPA2B1, and HNRNPC. A total of 44 miRNAs overlapping were detected in the miRTarBase, miRDB, and TargetScan databases. Totally 79 transcription factors overlapping were found in the ChIPBase and hTFtarget databases. (5) The expression levels of six core m6A-DEGs in the GSE74089 dataset were consistent with those in the GSE123568 dataset. (6) These findings confirm that the seven m6A-DEGs identified through bioinformatics techniques play a regulatory role in the expression of various miRNAs, transcription factors, AMPK, and interleukin-17 signaling pathways, and these genes have a significant impact on the differentiation and development of bone marrow cells as well as osteoclast differentiation in steroid-induced osteonecrosis of the femoral head. Consequently, these findings offer data support and establish a research direction for future investigations into the pathogenesis and targeted therapeutic strategies for steroid-induced osteonecrosis of the femoral head.

Key words: steroid-induced osteonecrosis of the femoral head, m6A methylation, microRNA, transcription factor, bioinformatics, differentially expressed gene, gene regulatory network, core gene

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