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Cited by 417

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Comparison of small extracellular vesicles isolated from plasma by ultracentrifugation or size‐exclusion chromatography: yield, purity and functional potential

Open access
Takov, Kaloyan, Yellon, Derek M., Davidson, Sean M.·2019·Journal of Extracellular Vesicles

Abstract

Interest in small extracellular vesicles (sEVs) as functional carriers of proteins and nucleic acids is growing continuously. There are large numbers of sEVs in the blood, but lack of standardised methods for sEV isolation greatly limits our ability to study them. In this report, we use rat plasma to systematically compare two commonly used techniques for isolation of sEVs: ultracentrifugation (UC‐sEVs) and size‐exclusion chromatography (SEC‐sEVs). SEC‐sEVs had higher particle number, protein content, particle/protein ratios and sEV marker signal than UC‐sEVs. However, SEC‐sEVs also contained greater amounts of APOB+ lipoproteins and large quantities of non‐sEV protein. sEV marker signal correlated very well with both particle number and protein content in UC‐sEVs but not in all of the SEC‐sEV fractions. Functionally, both UC‐sEVs and SEC‐sEVs isolates contained a variety of proangiogenic factors (with endothelin‐1 being the most abundant) and stimulated migration of endothelial cells. However, there was no evident correlation between the promigratory potential and the quantity of sEVs added, indicating that non‐vesicular co‐isolates may contribute to the promigratory effects. Overall, our findings suggest that UC provides plasma sEVs of lower yields, but markedly higher purity compared to SEC. Furthermore, we show that the functional activity of sEVs can depend on the isolation method used and does not solely reflect the sEV quantity. These findings are of importance when working with sEVs isolated from plasma‐ or serum‐containing conditioned medium.

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Metadata

Authors
Takov, K., Yellon, D. M., & Davidson, S. M.
Venue
Journal of Extracellular Vesicles
Publisher
Wiley
Published
2018-12-28
Volume
8
Issue
1
Pages
1560809-1560809
ISSN
2001-3078 (ISSN-L)
OpenAlex
W2908122377
Cited by
417
References
54
FWCI
11.69
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Comparison of small extracellular vesicles isolated from plasma by ultracentrifugation or size‐exclusion chromatography: yield, purity and functional potential. https://app.cochat.ai/papers/10.1080/20013078.2018.1560809
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Takov, K., Yellon, D. M., & Davidson, S. M. (2019). Comparison of small extracellular vesicles isolated from plasma by ultracentrifugation or size‐exclusion chromatography: yield, purity and functional potential. Journal of Extracellular Vesicles. https://doi.org/10.1080/20013078.2018.1560809

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.