PMID- 26998004 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1792-0981 (Print) IS - 1792-1015 (Electronic) IS - 1792-0981 (Linking) VI - 11 IP - 3 DP - 2016 Mar TI - Expression profile analysis based on DNA microarray for patients undergoing off-pump coronary artery bypass surgery. PG - 864-872 AB - Off-pump coronary artery bypass (OPCAB) surgery is the most effective treatment for coronary heart disease. The aim of this study was to explore the effects of OPCAB on the basis of the associated molecular mechanisms. GSE12486 expression profiles downloaded from the Gene Expression Omnibus database (GEO) were analyzed to identify the differentially expressed genes (DEGs). Principal component analysis (PCA) was conducted based on the expression profiles of DEGs. Function and pathway enrichment of upregulated DEGs was performed, followed by protein-protein interaction (PPI) network construction. Gene Set Enrichment Analysis (GSEA) was used for miRNA enrichment analysis based on expression profiles and prediction of their association with the disease. Cytoscape was applied to construct miRNA regulatory networks of DEGs. In total 64 DEGs were identified, including 63 upregulated and 1 downregulated gene. The first principal component in the PCA analysis was able to distinguish between pre- and post-OPCAB samples. Upregulated DEGs mainly enriched 20 Gene Ontology terms, such as chemokine activity, and 5 pathways including the chemokine signaling pathway. The constructed PPI network contained 234 edges and 55 nodes, and 10 upregulated hub nodes, including FBJ murine osteosarcoma viral oncogene homolog (FOS), were screened. A total of 36 miRNAs, including MIR-224 and MIR-7, were screened by GSEA enrichment analysis. A miRNA regulatory network including 176 edges and 97 nodes was constructed, showing the regulatory relationships between miRNAs and DEGs. For example, early growth response 2 (EGR2) was regulated by 8 miRNAs including MIR-150, MIR-142-3P, MIR-367 and MIR-224. The identified DEGs might play important roles in patients pre- and post-OPCAB surgery via the regulation of associated genes. FAU - Sun, Yunpeng AU - Sun Y AD - Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China. FAU - Gao, Yongsheng AU - Gao Y AD - Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China. FAU - Sun, Jingnan AU - Sun J AD - Cancer Center, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China. FAU - Liu, Xuguang AU - Liu X AD - Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China. FAU - Ma, Dashi AU - Ma D AD - Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China. FAU - Ma, Chunye AU - Ma C AD - Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China. FAU - Wang, Yong AU - Wang Y AD - Department of Cardiac Surgery, The First Hospital of Jilin University, Changchun, Jilin 130021, P.R. China. LA - eng PT - Journal Article DEP - 20160118 PL - Greece TA - Exp Ther Med JT - Experimental and therapeutic medicine JID - 101531947 PMC - PMC4774345 OTO - NOTNLM OT - miRNA regulatory network OT - off-pump coronary artery bypass OT - pathway analysis OT - protein-protein interaction network EDAT- 2016/03/22 06:00 MHDA- 2016/03/22 06:01 PMCR- 2016/01/18 CRDT- 2016/03/22 06:00 PHST- 2014/10/27 00:00 [received] PHST- 2015/12/03 00:00 [accepted] PHST- 2016/03/22 06:00 [entrez] PHST- 2016/03/22 06:00 [pubmed] PHST- 2016/03/22 06:01 [medline] PHST- 2016/01/18 00:00 [pmc-release] AID - ETM-0-0-3003 [pii] AID - 10.3892/etm.2016.3003 [doi] PST - ppublish SO - Exp Ther Med. 2016 Mar;11(3):864-872. doi: 10.3892/etm.2016.3003. Epub 2016 Jan 18.