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2015 ; 5
(ä): 14664
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Extracellular vesicles are rapidly purified from human plasma by PRotein Organic
Solvent PRecipitation (PROSPR)
#MMPMID26419333
Gallart-Palau X
; Serra A
; Wong AS
; Sandin S
; Lai MK
; Chen CP
; Kon OL
; Sze SK
Sci Rep
2015[Sep]; 5
(ä): 14664
PMID26419333
show ga
Extracellular vesicles (EVs) such as exosomes and microvesicles mediate
intercellular communication and regulate a diverse range of crucial biological
processes. Host cells that are damaged, infected or transformed release
biomarker-containing EVs into the peripheral circulation, where they can be
readily accessed for use in diagnostic or prognostic testing. However, current
methods of EV isolation from blood plasma are complex and often require
relatively large sample volumes, hence are inefficient for widespread use in
clinical settings. Here, we report a novel and inexpensive method of rapidly
isolating EVs from small volumes of human blood plasma by PRotein Organic Solvent
PRecipitation (PROSPR). PROSPR encompasses a rapid three-step protocol to remove
soluble proteins from plasma via precipitation in cold acetone, leaving the
lipid-encapsulated EVs behind in suspension. This generates higher purity EVs
that can then be obtained from filtration or classical ultracentrifugation
methods. We foresee that PROSPR-based purification of EVs will significantly
accelerate the discovery of new disease biomarkers and the characterization of
EVs with potential for clinical applications.