Microarray analysis reveals the potential molecular mechanism of Lp299v in stable coronary atherosclerotic disease

Zhenyang Fu; Xiaolei Song; Anna Shen; Tao Zhou

doi:10.1186/s13568-022-01466-y

Microarray analysis reveals the potential molecular mechanism of Lp299v in stable coronary atherosclerotic disease

AMB Express. 2022 Sep 24;12(1):125. doi: 10.1186/s13568-022-01466-y.

Authors

Zhenyang Fu¹, Xiaolei Song², Anna Shen¹, Tao Zhou³

Affiliations

¹ Department of Cardiology, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou, 510630, China.
² Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Guangzhou Medical University,Guangzhou Medical University, Guangzhou, China.
³ Department of Cardiology, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou, 510630, China. zhoutao6240@hotmail.com.

Abstract

A growing body of evidence has confirmed that inflammatory mechanisms are involved in the formation and treatment of coronary atherosclerotic disease (CAD). An increase in circulatory levels of inflammatory cytokines has been found in patients with CAD, while the molecular mechanisms of inflammation still remain elusive. This study was designed to identify differentially expressed genes (DEGs), and to explore the molecular mechanism and hub genes that are involved in the effects of Lactobacillus plantarum 299v (Lp299v) supplementation. Microarray dataset (GSE156357) was downloaded from the Gene Expression Omnibus (GEO) database. The DEGs were identified by the R software. Then, the Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses and construction of protein-protein interaction (PPI) network were performed by DAVID, STRING, and Cytoscape software. In daily alcohol user (DAU) group, 7,541 DEGs were identified, including 206 up-regulated and 7,335 down-regulated DEGs. In non-daily alcohol user (non-DAU) group, 2,799 DEGs were identified (2,491 up-regulated and 308 down-regulated DEGs). The GO enrichment analysis revealed that miosis was up-regulated and immune response was down-regulated. The KEGG enrichment analysis showed that Lp299v supplementation reduced the levels of chemotactic cytokines, and weakened immune response. Proteins of G protein-coupled receptor, inflammatory response, regulation of cell proliferation and apoptosis-related proteins were found in the PPI network. The hub genes were associated with G protein-coupled receptor, inflammatory response, and cell proliferation and apoptosis. The weighted gene co-expression network analysis (WGCNA) enriched the DEGs in 4 modules. This study indicated the expressions of chemokine receptors and regulation of immune response in the Lp299v supplementation. Meanwhile, it was supposed that chemokine receptors may have a cellular effect.

Keywords: Coronary atherosclerotic disease; G protein-coupled receptor; Immune response; Lactobacillus plantarum 299v; Microarray analysis.

Grants and funding

Grant No. 2018030310288/Natural Science Foundation of Guangdong Province