Orchestrated regulation of energy supply and energy expenditure: Transcriptional coexpression of metabolism, ion homeostasis, and sarcomeric genes in mammalian myocardium

Heart Rhythm : the Official Journal of the Heart Rhythm Society
Andreas S BarthGordon F Tomaselli

Abstract

During the development of heart failure, the myocardium undergoes profound electrical remodeling, characterized by prolongation of action potential duration, changes in Ca(2+) homeostasis, and slowing of conduction. We tested the hypothesis that the electrical remodeling, indexed by the expression of ion channel and transporter genes, occurs in the context of a coordinated regulation of metabolism and signaling processes observed in heart failure. A meta-analysis of myocardial murine and human microarray data sets was performed. We identified transcripts that were coordinately expressed with 132 myocardial ion channel and transporter genes in 18 murine and human myocardial microarray data sets. The genes coexpressed with ion channels were subsequently grouped into Gene Ontology (GO) categories, revealing 4 major, mutually exclusive GO clusters: 55 ion channel and transporter genes were coexpressed with major bioenergetic pathways (oxidative phosphorylation, citric acid cycle, glycolysis, and fatty acid metabolism) and contractile processes (muscle contraction, sarcomere, and Z disc), while 36, 16, and 25 ion channel transcripts were associated with the GO clusters of signal transduction, transcription/translation, and a nonspec...Continue Reading

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Citations

Jan 29, 2016·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Matteo Vatta
Aug 9, 2017·Circulation. Arrhythmia and Electrophysiology·Shamone R Gore-PanterDavid R Van Wagoner
Oct 20, 2018·Frontiers in Physiology·Nathan C DenhamKatharine M Dibb
Jan 18, 2021·Pflügers Archiv : European journal of physiology·Julie H RennisonDavid R Van Wagoner

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