Cited by 228Extracellular vesicles in diseaseExercise and Physiological ResponsesMuscle Physiology and Disorders

Muscle releases alpha-sarcoglycan positive extracellular vesicles carrying miRNAs in the bloodstream

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Guescini, Michele, Canonico, Barbara, Lucertini, Francesco, Maggio, Serena, Annibalini, Giosué, Barbieri, Elena, Luchetti, Francesca, Papa, Stefano +1 more·2015·PLoS ONE

Abstract

In the past few years, skeletal muscle has emerged as an important secretory organ producing soluble factors, called myokines, that exert either autocrine, paracrine or endocrine effects. Moreover, recent studies have shown that muscle releases microRNAs into the bloodstream in response to physical exercise. These microRNAs affect target cells, such as hormones and cytokines. The mechanisms underlying microRNA secretion are poorly characterized at present. Here, we investigated whether muscle tissue releases extracellular vesicles (EVs), which carry microRNAs in the bloodstream under physiological conditions such as physical exercise. Using density gradient separation of plasma from sedentary and physically fit young men we found EVs positive for TSG101 and alpha-sarcoglycan (SGCA), and enriched for miR-206. Cytometric analysis showed that the SGCA+ EVs account for 1-5% of the total and that 60-65% of these EVs were also positive for the exosomal marker CD81. Furthermore, the SGCA-immuno captured sub-population of EVs exhibited higher levels of the miR-206/miR16 ratio compared to total plasma EVs. Finally, a significant positive correlation was found between the aerobic fitness and muscle-specific miRNAs and EV miR-133b and -181a-5p were significantly up-regulated after acute exercise. Thus, our study proposes EVs as a novel means of muscle communication potentially involved in muscle remodeling and homeostasis.

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Crossref · 10.1371/journal.pone.0125094

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Authors
Guescini, M., Canonico, B., Lucertini, F., Maggio, S., Annibalini, G., Barbieri, E., Luchetti, F., Papa, S., & Stocchi, V.
Affiliations
University of Urbino (IT)
Corresponding author
Guescini, Michele
Venue
PLoS ONE
Published
2015-05-08
Volume
10
Issue
5
Pages
e0125094
ISSN
1932-6203 (ISSN-L)
OpenAlex
W219060072
Cited by
228
References
62
Citations by year
2026: 19 · 2025: 31 · 2024: 26 · 2023: 27 · 2022: 33 · 2021: 24 · 2020: 22 · 2019: 18 · 2018: 11 · 2017: 11 · 2016: 5 · 2015: 1
FWCI
4.05
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
  • CINECA IRIS Institutional Research information system (University of Urbino) (submittedVersion, cc-by)
Funders
  • Regione Marche
  • Università degli Studi di Urbino Carlo Bo
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Extracellular vesicles in disease
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
extracellular vesicles, alpha-sarcoglycan, miR-206, microRNA secretion, myokines, skeletal muscle, physical activity, cardiorespiratory fitness, miR-133b, miR-181a-5p, TSG101, CD81, plasma vesicles, muscle remodeling, muscle homeostasis
MeSH terms
Extracellular Vesicles, Tsg101 Protein, Adult, Cell Communication, Centrifugation, Density Gradient, DNA-Binding Proteins, Gene Expression Regulation, Humans, Male, Transcription Factors, Signal Transduction, Exercise, Muscle, Skeletal, MicroRNAs, Sarcoglycans, Exosomes, Endosomal Sorting Complexes Required for Transport, Sedentary Behavior, Tetraspanin 28

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