1. Transcriptional Profiling of Cardiac Cells Links Age-Dependent Changes in Acetyl-CoA Signaling to Chromatin Modifications
- Author
-
Michael Behanan, Mohsin Khan, Justin Kurian, Sadia Mohsin, and Veronica Bohl
- Subjects
0301 basic medicine ,030204 cardiovascular system & hematology ,chromatin remodeling ,Histones ,0302 clinical medicine ,Cluster Analysis ,Gene Regulatory Networks ,Myocytes, Cardiac ,Biology (General) ,Spectroscopy ,Regulation of gene expression ,biology ,acetyl-CoA ,Stem Cells ,cardiac stem cells ,RNA sequencing ,General Medicine ,bioinformatics ,Chromatin ,Computer Science Applications ,Cell biology ,Chemistry ,Histone ,Signal transduction ,Signal Transduction ,QH301-705.5 ,Catalysis ,Chromatin remodeling ,Article ,Inorganic Chemistry ,03 medical and health sciences ,Acetyl Coenzyme A ,Humans ,Epigenetics ,Physical and Theoretical Chemistry ,QD1-999 ,Molecular Biology ,epigenetics ,Gene Expression Profiling ,Organic Chemistry ,Computational Biology ,Epigenome ,Chromatin Assembly and Disassembly ,030104 developmental biology ,Gene Expression Regulation ,Acetylation ,biology.protein ,Transcriptome ,Protein Processing, Post-Translational ,metabolism - Abstract
Metabolism has emerged as a regulator of core stem cell properties such as proliferation, survival, self-renewal, and multilineage potential. Metabolites serve as secondary messengers, fine-tuning signaling pathways in response to microenvironment alterations. Studies show a role for central metabolite acetyl-CoA in the regulation of chromatin state through changes in histone acetylation. Nevertheless, metabolic regulators of chromatin remodeling in cardiac cells in response to increasing biological age remains unknown. Previously, we identified novel cardiac-derived stem-like cells (CTSCs) that exhibit increased functional properties in the neonatal heart (nCTSC). These cells are linked to a unique metabolism which is altered with CTSC aging (aCTSC). Here, we present an in-depth, RNA-sequencing-based (RNA-Seq) bioinformatic with cluster analysis that details a distinct epigenome present in nCTSCs but not in aCTSCs. Gene Ontology (GO) and pathway enrichment reveal biological processes, including metabolism, gene regulation enriched in nCTSCs, and STRING analysis that identifies a network of genes related to acetyl-CoA that can potentially influence chromatin remodeling. Additional validation by Western blot and qRT-PCR shows increased acetyl-CoA signaling and histone acetylation in nCTSCs compared to aCTSCs. In conclusion, our data reveal that the link between metabolism and histone acetylation in cardiac cells is altered with the aging of the cardiac tissue.
- Published
- 2021