Mechanical overload-induced muscle-derived extracellular vesicles promote adipose tissue lipolysisShow others and affiliations
2021 (English)In: The FASEB Journal, ISSN 0892-6638, E-ISSN 1530-6860, Vol. 35, no 6, article id e21644Article in journal (Refereed) Published
Abstract [en]
How regular physical activity is able to improve health remains poorly understood. The release of factors from skeletal muscle following exercise has been proposed as a possible mechanism mediating such systemic benefits. We describe a mechanism wherein skeletal muscle, in response to a hypertrophic stimulus induced by mechanical overload (MOV), released extracellular vesicles (EVs) containing muscle-specific miR-1 that were preferentially taken up by epidydimal white adipose tissue (eWAT). In eWAT, miR-1 promoted adrenergic signaling and lipolysis by targeting Tfap2 alpha, a known repressor of Adr beta 3 expression. Inhibiting EV release prevented the MOV-induced increase in eWAT miR-1 abundance and expression of lipolytic genes. Resistance exercise decreased skeletal muscle miR-1 expression with a concomitant increase in plasma EV miR-1 abundance, suggesting a similar mechanism may be operative in humans. Altogether, these findings demonstrate that skeletal muscle promotes metabolic adaptations in adipose tissue in response to MOV via EV-mediated delivery of miR-1.
Place, publisher, year, edition, pages
WILEY , 2021. Vol. 35, no 6, article id e21644
Keywords [en]
adipose tissue; extracellular vesicles; lipolysis; microRNAs; skeletal muscle
National Category
Physiology
Identifiers
URN: urn:nbn:se:liu:diva-176460DOI: 10.1096/fj.202100242RISI: 000655695900010PubMedID: 34033143OAI: oai:DiVA.org:liu-176460DiVA, id: diva2:1566311
Note
Funding Agencies|National Institute of Diabetes and Digestive and Kidney DiseasesUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USANIH National Institute of Diabetes & Digestive & Kidney Diseases (NIDDK) [R01DK119619]; Futurum-the Academy for Health and Care, Region Jonkoping County; Swedish Research Council for Sports Science
2021-06-152021-06-152021-06-15