Biomolecules (Dec 2023)

Do Media Extracellular Vesicles and Extracellular Vesicles Bound to the Extracellular Matrix Represent Distinct Types of Vesicles?

  • Saida Mebarek,
  • Rene Buchet,
  • Slawomir Pikula,
  • Agnieszka Strzelecka-Kiliszek,
  • Leyre Brizuela,
  • Giada Corti,
  • Federica Collacchi,
  • Genevieve Anghieri,
  • Andrea Magrini,
  • Pietro Ciancaglini,
  • Jose Luis Millan,
  • Owen Davies,
  • Massimo Bottini

DOI
https://doi.org/10.3390/biom14010042
Journal volume & issue
Vol. 14, no. 1
p. 42

Abstract

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Mineralization-competent cells, including hypertrophic chondrocytes, mature osteoblasts, and osteogenic-differentiated smooth muscle cells secrete media extracellular vesicles (media vesicles) and extracellular vesicles bound to the extracellular matrix (matrix vesicles). Media vesicles are purified directly from the extracellular medium. On the other hand, matrix vesicles are purified after discarding the extracellular medium and subjecting the cells embedded in the extracellular matrix or bone or cartilage tissues to an enzymatic treatment. Several pieces of experimental evidence indicated that matrix vesicles and media vesicles isolated from the same types of mineralizing cells have distinct lipid and protein composition as well as functions. These findings support the view that matrix vesicles and media vesicles released by mineralizing cells have different functions in mineralized tissues due to their location, which is anchored to the extracellular matrix versus free-floating.

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