AUTHOR=Xu Jing , Yang Yuejin 

TITLE=Integrated Gene Expression Profiling Analysis Reveals Potential Molecular Mechanisms and Candidate Biomarkers for Early Risk Stratification and Prediction of STEMI and Post-STEMI Heart Failure Patients

JOURNAL=Frontiers in Cardiovascular Medicine

VOLUME=8

YEAR=2021

URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2021.736497

DOI=10.3389/fcvm.2021.736497

ISSN=2297-055X

ABSTRACT=<p><bold>Objective:</bold> To explore the molecular mechanism and search for the candidate differentially expressed genes (DEGs) with the predictive and prognostic potentiality that is detectable in the whole blood of patients with ST-segment elevation (STEMI) and those with post-STEMI HF.</p><p><bold>Methods:</bold> In this study, we downloaded GSE60993, GSE61144, GSE66360, and GSE59867 datasets from the NCBI-GEO database. DEGs of the datasets were investigated using R. Gene ontology (GO) and pathway enrichment were performed <italic>via</italic> ClueGO, CluePedia, and DAVID database. A protein interaction network was constructed <italic>via</italic> STRING. Enriched hub genes were analyzed by Cytoscape software. The least absolute shrinkage and selection operator (LASSO) logistic regression algorithm and receiver operating characteristics analyses were performed to build machine learning models for predicting STEMI. Hub genes for further validated in patients with post-STEMI HF from GSE59867.</p><p><bold>Results:</bold> We identified 90 upregulated DEGs and nine downregulated DEGs convergence in the three datasets (|log<sub>2</sub>FC| ≥ 0.8 and adjusted <italic>p</italic> &lt; 0.05). They were mainly enriched in GO terms relating to cytokine secretion, pattern recognition receptors signaling pathway, and immune cells activation. A cluster of eight genes including <italic>ITGAM, CLEC4D, SLC2A3, BST1, MCEMP1, PLAUR, GPR97</italic>, and <italic>MMP25</italic> was found to be significant. A machine learning model built by <italic>SLC2A3, CLEC4D, GPR97, PLAUR</italic>, and <italic>BST1</italic> exerted great value for STEMI prediction. Besides, <italic>ITGAM</italic> and <italic>BST1</italic> might be candidate prognostic DEGs for post-STEMI HF.</p><p><bold>Conclusions:</bold> We reanalyzed the integrated transcriptomic signature of patients with STEMI showing predictive potentiality and revealed new insights and specific prospective DEGs for STEMI risk stratification and HF development.</p>