Identifying key genes associated with acute myocardial infarction

Area of Science:

• Genomics
• Molecular Biology
• Cardiovascular Research

Background:

• Acute myocardial infarction (AMI) is a critical cardiovascular condition.
• Identifying key genes in AMI pathogenesis is crucial for developing effective treatments.

Purpose of the Study:

• To identify key genes associated with acute myocardial infarction (AMI) using bioinformatics approaches.
• To elucidate the regulatory network involving transcription factors and microRNAs in AMI.

Main Methods:

• Reanalysis of public microarray datasets (GSE66360, GSE34198, GSE48060) from AMI patients and controls.
• Differential gene expression analysis and construction of a gene functional interaction (FI) network.
• Pathway enrichment analysis, identification of regulatory transcription factors and microRNAs, and RT-PCR validation.

Main Results:

• Identified 913 upregulated and 1060 downregulated differentially expressed genes (DEGs) in AMI.
• Constructed a FI network with 21 modules, revealing enriched pathways.
• Identified FOXO3 and MYBL2 as key transcription factors, and hsa-miR-21-5p and hsa-miR-30c-5p as key microRNAs involved in AMI regulation.

Conclusions:

• 41 DEGs, including SOCS3, VAPA, and COL5A2, are implicated in AMI pathogenesis.
• FOXO3, MYBL2, hsa-miR-21-5p, and hsa-miR-30c-5p may regulate the expression of these DEGs in AMI.
• This study provides insights into the molecular mechanisms underlying AMI.