EGR2 is a hub-gene in myocardial infarction and aggravates inflammation and apoptosis in hypoxia-induced cardiomyocytes

被引:10
作者
Bo, Zhixiang [1 ]
Huang, Shuwen [2 ]
Li, Li [1 ]
Chen, Lin [3 ]
Chen, Ping [4 ]
Luo, Xiaoyi [1 ]
Shi, Fang [1 ]
Zhu, Bing [1 ]
Shen, Lin [1 ]
机构
[1] Chongqing Med Univ, Affiliated Hosp 2, Dept Thorac & Cardiovasc Surg, 76 Linjiang Rd, Chongqing 400010, Peoples R China
[2] Fujian Univ Tradit Chinese Med, Res Base Tradit Chinese Med Syndrome, Fuzhou 350122, Peoples R China
[3] Wushan Cty Hosp Tradit Chinese Med, Dept Surg, Chongqing 400010, Peoples R China
[4] Fifth Peoples Hosp Chongqing, Dept Gastroenterol, Chongqing 400010, Peoples R China
关键词
Myocardial infarction (MI); Cardiomyocytes; Hub-gene; Hypoxia; EGR2; ISCHEMIA-REPERFUSION; NLRP3; INFLAMMASOME; INJURY; EXPRESSION; HEART; FOS;
D O I
10.1186/s12872-022-02814-3
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background Myocardial infarction (MI) is characterized by coronary artery occlusion, ischemia and hypoxia of myocardial cells, leading to irreversible myocardial damage. Therefore, it is urgent to explore the potential mechanism of myocardial injury during the MI process to develop effective therapies for myocardial cell rescue. Methods We downloaded the GSE71906 dataset from GEO DataSets, and the R software was used to identify the differentially expressed genes (DEGs) in mouse heart tissues of MI and sham controls. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment were performed to understand the significantly activated signaling pathways in MI. Protein-protein interaction (PPI) network was constructed to highlight the hub genes in DEGs. The Western Blot, qRT-PCR and TUNEL staining were used to explore the function of hub gene in hypoxia-induced cardiomyocytes in vitro. Results A total of 235 DEGs were identified in GSE71906 dataset. Functional enrichment analysis revealed that the upregulated genes were primarily associated with the inflammatory response and apoptosis. 20 hub genes were identified in PPI network, and the early growth response 2 (EGR2) was highlighted. In vitro. We confirmed the EGR2 was upregulated induced by hypoxia and revealed the upregulated EGR2 aggravates pro-inflammation and pro-apoptotic genes expression. In addition, EGR2 knockout mitigates hypoxia-induced inflammation and apoptosis in cardiomyocytes. Conclusion The present study identified the EGR2 was a hub gene in myocardial damage during MI process, the excessive EGR2 aggravates hypoxia-induced myocardial damage by accelerating inflammation and apoptosis in vitro. Therefore, targeting EGR2 offers a potential pharmacological strategy for myocardial cell rescue in MI.
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页数:11
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