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Mechanical overload-induced muscle-derived extracellular vesicles promote adipose tissue lipolysis
Univ Nebraska, NE USA; Univ Kentucky, KY USA.
Univ Kentucky, KY USA; Univ Kentucky, KY USA.
Univ Nebraska, NE USA; Univ Kentucky, KY USA.
Univ Kentucky, KY USA; Univ Kentucky, KY USA.
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2021 (Engelska)Ingår i: The FASEB Journal, ISSN 0892-6638, E-ISSN 1530-6860, Vol. 35, nr 6, artikel-id e21644Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
WILEY , 2021. Vol. 35, nr 6, artikel-id e21644
Nyckelord [en]
adipose tissue; extracellular vesicles; lipolysis; microRNAs; skeletal muscle
Nationell ämneskategori
Fysiologi och anatomi
Identifikatorer
URN: urn:nbn:se:liu:diva-176460DOI: 10.1096/fj.202100242RISI: 000655695900010PubMedID: 34033143OAI: oai:DiVA.org:liu-176460DiVA, id: diva2:1566311
Anmärkning

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

Tillgänglig från: 2021-06-15 Skapad: 2021-06-15 Senast uppdaterad: 2025-02-10

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Alkner, Björn
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Avdelningen för kirurgi, ortopedi och onkologiMedicinska fakulteten
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