25 December 2019 : Clinical Research
Med Sci Monit 2019; 25:9949-9962
BACKGROUND: In an atherosclerotic artery wall, monocyte-derived macrophages are the principal mediators that respond to pathogens and inflammation. The present study aimed to investigate potential genetic changes in gene expression between normal tissue-resident macrophages and atherosclerotic macrophages in the human body.
MATERIAL AND METHODS: The expression profile data of GSE7074 acquired from the Gene Expression Omnibus (GEO) database, which includes the transcriptome of 4 types of macrophages, was downloaded. Diﬀerentially expressed genes (DEGs) were identified using R software, then we performed functional enrichment, protein‑protein interaction (PPI) network construction, key node and module analysis, and prediction of microRNAs (miRNAs)/transcription factors (TFs) targeting genes.
RESULTS: After data processing, 236 DEGs were identified, including 21 upregulated genes and 215 downregulated genes. The DEG set was enriched in 22 significant Gene Ontology (GO) terms and 25 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, and the PPI network constructed with these DEGs comprised 6 key nodes with degrees ≥8. Key nodes in the PPI network and simultaneously involved in the prime modules, including rhodopsin (RHO), coagulation factor V (F5), and bestrophin-1 (BEST1), are promising for the prediction of atherosclerotic plaque formation. Furthermore, in the miRNA/TF-target network, hsa-miR-3177-5p might be involved in the pathogenesis of atherosclerosis via regulating BEST1, and the transcription factor early growth response-1 (EGR1) was found to be a potential promoter in atherogenesis.
CONCLUSIONS: The identified key hub genes, predicted miRNAs/TFs, and underlying molecular mechanisms may be involved in atherogenesis, thus potentially contributing to the treatment and diagnosis of patients with atherosclerotic disease.
Keywords: atherosclerosis, Gene Expression Profiling, Macrophages, Protein Array Analysis, Computational Biology, data mining, Databases, Genetic, Gene Expression Regulation, Neoplastic, gene ontology, Gene Regulatory Networks, MicroRNAs, Oligonucleotide Array Sequence Analysis, Protein Interaction Maps, Software, Transcription Factors, transcriptome
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