The miRNA Plasma Signature in Response to Acute Aerobic Exercise and Endurance Training

Søren Nielsen, Thorbjörn Åkerström, Anders Rinnov, Christina Yfanti, Camilla Charlotte Schéele, Bente Klarlund Pedersen, Matthew James Laye

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Abstract

MiRNAs are potent intracellular posttranscriptional regulators and are also selectively secreted into the circulation in a cell-specific fashion. Global changes in miRNA expression in skeletal muscle in response to endurance exercise training have been reported. Therefore, our aim was to establish the miRNA signature in human plasma in response to acute exercise and chronic endurance training by utilizing a novel methodological approach. RNA was isolated from human plasma collected from young healthy men before and after an acute endurance exercise bout and following 12 weeks of endurance training. Global miRNA (742 miRNAs) measurements were performed as a screening to identify detectable miRNAs in plasma. Using customized qPCR panels we quantified the expression levels of miRNAs detected in the screening procedure (188 miRNAs). We demonstrate a dynamic regulation of circulating miRNA (ci-miRNA) levels following 0 hour (miR-106a, miR-221, miR-30b, miR-151-5p, let-7i, miR-146, miR-652 and miR-151-3p), 1 hour (miR-338-3p, miR-330-3p, miR-223, miR-139-5p and miR-143) and 3 hours (miR-1) after an acute exercise bout (P
Original languageEnglish
Article numbere87308
JournalP L o S One
Volume9
Issue number2
Number of pages8
ISSN1932-6203
DOIs
Publication statusPublished - 2014

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