AUTHOR=Yang Chuanxi , Zhang Jing , Wu Tingting , Zhao Kun , Wu Xiaoguang , Shi Jing , Sun Wei , Kong Xiangqing 

TITLE=Multi-Omics Analysis to Examine Gene Expression and Metabolites From Multisite Adipose-Derived Mesenchymal Stem Cells

JOURNAL=Frontiers in Genetics

VOLUME=12

YEAR=2021

URL=https://www.frontiersin.org/journals/genetics/articles/10.3389/fgene.2021.627347

DOI=10.3389/fgene.2021.627347

ISSN=1664-8021

ABSTRACT=<p>This study aimed at exploring the gene expression and metabolites among multisite adipose-derived mesenchymal stem cells (ASCs) and investigate the metabolic pathway using a multi-omics analysis. Subcutaneous adipose-derived mesenchymal stem cells (SASCs), perirenal adipose-derived mesenchymal stem cells (PASCs), and epididymal adipose-derived mesenchymal stem cells (EASCs) were isolated from Sprague Dawley rats. RNA and metabolites were extracted and sequenced using transcriptomics and metabolomics analyses, respectively. There were 720 differentially expressed genes (DEGs) in EASCs and 688 DEGs in PASCs compared with SASCs; there were 166 unique DEGs in EASCs, 134 unique DEGs in PASCs, and 554 common DEGs between EASCs and PASCs. Furthermore, there were 226 differential metabolites in EASCs, 255 differential metabolites in PASCs, 83 unique differential metabolites in EASCs, 112 unique differential metabolites in PASCs, and 143 common differential metabolites between EASCs and PASCs. The transcriptomics and metabolomics analyses identified four hub genes, one in EASCs and three in PASCs. There are functional differences among multisite ASCs that may be related to the hub genes <italic>Atac2</italic>, <italic>Rrm1</italic>, <italic>Rrm2</italic>, and <italic>Gla</italic>. The relevant signaling pathways are the Ras signaling pathway, HIF-1 signaling pathway, and the p53 signaling pathway. In conclusion, compared with SASCs, our multi-omics analysis identified that EASCs with higher <italic>Acat2</italic> expression may be more correlated to fat metabolism and insulin resistance, while PASCs with abnormal expression of <italic>Rrm1/2</italic> and <italic>Gla</italic> may be more correlated with some malignant tumors and cardiac-cerebral vascular disease.</p>