SVF-derived extracellular vesicles carry characteristic miRNAs in lipedema

Eleni Priglinger, Karin Strohmeier, Moritz Weigl, Carolin Lindner, Daniela Auer, Mario Gimona, Martin Barsch, Jaroslaw Jacak, Heinz Redl, Johannes Grillari, Matthias Sandhofer, Matthias Hackl, Susanne Wolbank

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Lipedema is a chronic, progressive disease of adipose tissue with lack of consistent diagnostic criteria. The aim of this study was a thorough comparative characterization of extracellular microRNAs (miRNAs) from the stromal vascular fraction (SVF) of healthy and lipedema adipose tissue. For this, we analyzed 187 extracellular miRNAs in concentrated conditioned medium (cCM) and specifically in small extracellular vesicles (sEVs) enriched thereof by size exclusion chromatography. No significant difference in median particle size and concentration was observed between sEV fractions in healthy and lipedema. We found the majority of miRNAs located predominantly in cCM compared to sEV enriched fraction. Surprisingly, hierarchical clustering of the most variant miRNAs showed that only sEVmiRNA profiles – but not cCMmiRNAs – were impacted by lipedema. Seven sEVmiRNAs (miR–16-5p, miR-29a-3p, miR-24-3p, miR-454-p, miR–144-5p, miR-130a-3p, let-7c-5p) were differently regulated in lipedema and healthy individuals, whereas only one cCMmiRNA (miR-188-5p) was significantly downregulated in lipedema. Comparing SVF from healthy and lipedema patients, we identified sEVs as the lipedema relevant miRNA fraction. This study contributes to identify the potential role of SVF secreted miRNAs in lipedema.

Original languageEnglish
Article number7211
Pages (from-to)7211
JournalScientific Reports
Volume10
Issue number1
DOIs
Publication statusPublished - 29 Apr 2020

Keywords

  • Adipose Tissue/metabolism
  • Adolescent
  • Adult
  • Extracellular Vesicles/metabolism
  • Female
  • Humans
  • Lipedema/metabolism
  • Male
  • MicroRNAs/metabolism
  • Middle Aged

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