
High‐speed centrifugation induces aggregation of extracellular vesicles
Author(s) -
Linares Romain,
Tan Sisareuth,
Gounou Céline,
Arraud Nicolas,
Brisson Alain R.
Publication year - 2015
Publication title -
journal of extracellular vesicles
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.94
H-Index - 68
ISSN - 2001-3078
DOI - 10.3402/jev.v4.29509
Subject(s) - centrifugation , extracellular vesicles , flow cytometry , vesicle , extracellular , differential centrifugation , biophysics , microbiology and biotechnology , chemistry , microvesicles , cell , phenotype , nanoparticle tracking analysis , nanotechnology , biology , materials science , chromatography , biochemistry , membrane , microrna , gene
Plasma and other body fluids contain cell‐derived extracellular vesicles (EVs), which participate in physiopathological processes and have potential biomedical applications. In order to isolate, concentrate and purify EVs, high‐speed centrifugation is often used. We show here, using electron microscopy, receptor‐specific gold labelling and flow cytometry, that high‐speed centrifugation induces the formation of EV aggregates composed of a mixture of EVs of various phenotypes and morphologies. The presence of aggregates made of EVs of different phenotypes may lead to erroneous interpretation concerning the existence of EVs harbouring surface antigens from different cell origins.