法医学杂志 ›› 2022, Vol. 38 ›› Issue (3): 343-349.DOI: 10.12116/j.issn.1004-5619.2021.410505

• 论著 • 上一篇    下一篇

小鼠急性心肌梗死后不同时间点的基因表达谱

李昊1(), 贾孝2(), 白雅琴1, 吴鹏1, 郭华林3, 贠克明1, 高彩荣1(), 郭相杰1()   

  1. 1.山西医科大学法医学院,山西 晋中 030600
    2.证据科学教育部重点实验室(中国政法大学),北京 100088
    3.内蒙古医科大学,内蒙古 呼和浩特 010110
  • 收稿日期:2021-05-25 发布日期:2022-06-25 出版日期:2022-06-28
  • 通讯作者: 高彩荣,郭相杰
  • 作者简介:高彩荣,女,博士,博士研究生导师,主要从事猝死相关的法医病理学研究;E-mail:gaocairong5175@163.com
    郭相杰,男,博士,硕士研究生导师,副教授,主要从事疑难复杂死因的法医病理学鉴定研究;E-mail:258187101@qq.com
    李昊(1995—),男,硕士研究生,主要从事猝死相关法医病理学研究;E-mail:442501844@qq.com
    贾孝(1994—),女,硕士研究生,主要从事法医临床学研究;E-mail:794001305@qq.com第一联系人:李昊和贾孝为共同第一作者
  • 基金资助:
    国家自然科学基金资助项目(81971790);山西省基础研究计划资助项目(20210302123314)

Gene Expression Profiles at Different Time Points after Acute Myocardial Infarction in Mice

Hao LI1(), Xiao JIA2(), Ya-qin BAI1, Peng WU1, Hua-lin GUO3, Ke-ming YUN1, Cai-rong GAO1(), Xiang-jie GUO1()   

  1. 1.School of Forensic Medicine, Shanxi Medical University, Jinzhong 030600, Shanxi Province, China
    2.Key Laboratory of Evidence Science, Ministry of Education, China University of Political Science and Law, Beijing 100088, China
    3.Inner Mongolia Medical University, Hohhot 010110, Inner Mongolia, China
  • Received:2021-05-25 Online:2022-06-25 Published:2022-06-28
  • Contact: Cai-rong GAO,Xiang-jie GUO

摘要:

目的 探寻急性心肌梗死(acute myocardial infarction,AMI)小鼠心肌组织mRNA的差异表达及时序性变化规律。 方法 从基因表达综合数据库中下载小鼠AMI相关数据集GSE4648,筛选数据集中AMI实验组和假手术对照组术后0.25、1、4、12、24、48 h 6个时间点左心室心肌组织样本各6个,空白对照组左心室心肌组织样本数据6个,共78个样本数据进行分析。使用R软件包中的Bioconductor package limma分析差异表达基因,使用clusterProfiler进行功能通路富集分析,使用STRING数据库及Cytoscape软件构建蛋白质-蛋白质相互作用关系(protein-protein interaction,PPI)网络、Degree拓扑算法确定关键基因,最后使用Mfuzz进行时序性聚类分析。 结果 共1 320个差异表达基因与AMI发生发展有关。功能富集结果包括细胞分解代谢过程、炎症反应的调控、肌肉系统及脉管系统发育、细胞黏附等,信号通路主要富集于丝裂原活化蛋白激酶信号通路。AMI关键基因包括MYL7、TSC22D2、HSPA1A、BTG2、NR4A1、RYR2,在AMI发生后0.25~48 h出现不同程度的上调或下调。 结论 AMI中差异表达基因的功能信号通路及关键基因的时序性表达可能为AMI的法医学鉴定提供参考。

关键词: 法医病理学, 生物信息学, 急性心肌梗死, 差异表达基因, 时序性表达, 小鼠

Abstract:

Objective To explore the mRNA differential expressions and the sequential change pattern in acute myocardial infarction (AMI) mice. Methods The AMI mice relevant dataset GSE4648 was downloaded from Gene Expression Omnibus (GEO). In the dataset, 6 left ventricular myocardial tissue samples were selected at 0.25, 1, 4, 12, 24 and 48 h after operation in AMI group and sham control group, and 6 left ventricular myocardial tissue samples were selected in blank control group, a total of 78 samples were analyzed. Differentially expressed genes (DEGs) were analyzed by R/Bioconductor package limma, functional pathway enrichment analysis was performed by clusterProfiler, protein-protein interaction (PPI) network was constructed by STRING database and Cytoscape software, the key genes were identified by Degree topological algorithm, cluster sequential changes on DEGs were analyzed by Mfuzz. Results A total of 1 320 DEGs were associated with the development of AMI. Functional enrichment results included cellular catabolic process, regulation of inflammatory response, development of muscle system and vasculature system, cell adhesion and signaling pathways mainly enriched in mitogen-activated protein kinase (MAPK) signaling pathway. The key genes of AMI included MYL7TSC22D2HSPA1ABTG2NR4A1RYR2 were up-regulated or down-regulated at 0.25-48 h after the occurrence of AMI. Conclusion The functional signaling pathway of DEGs and the sequential expression of key genes in AMI may provide a reference for the forensic identification of AMI.

Key words: forensic pathology, bioinformatics, acute myocardial infarction, differentially expressed genes, sequential expression, mice

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