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Accession IconGSE72351

Cells release subpopulations of exosomes with distinct molecular and functional properties

Organism Icon Mus musculus
Sample Icon 9 Downloadable Samples
Technology Badge Icon Affymetrix Mouse Gene 2.1 ST Array (mogene21st)

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Cells release nano-sized membrane vesicles that are involved in intercellular communication by transferring biological information between cells. It is generally accepted that cells release at least three types of these extracellular vesicles (EVs): apoptotic bodies, microvesicles and exosomes. Whilst exosomes are assumed to be a homogenous population of EVs, they have a wide range of putative functions. Therefore, we hypothesized that cells release subpopulations of exosomes with distinct molecular compositions and functional properties. Exosomes were isolated from conditioned medium by differential ultracentrifugation. Sucrose density gradient centrifugation of the resulting exosome pellet revealed the presence of two distinct subpopulations, one smaller, slow migrating population (HD-Exo), and one fast migrating, larger population (LD-Exo).
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