Open Access
Open access
Scientific Reports, volume 5, issue 1, publication number 17319

Isolation of exosomes by differential centrifugation: Theoretical analysis of a commonly used protocol

Publication typeJournal Article
Publication date2015-11-30
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor4.6
ISSN20452322
PubMed ID:  26616523
Multidisciplinary
Abstract

Exosomes, small (40–100 nm) extracellular membranous vesicles, attract enormous research interest because they are carriers of disease markers and a prospective delivery system for therapeutic agents. Differential centrifugation, the prevalent method of exosome isolation, frequently produces dissimilar and improper results because of the faulty practice of using a common centrifugation protocol with different rotors. Moreover, as recommended by suppliers, adjusting the centrifugation duration according to rotor K-factors does not work for “fixed-angle” rotors. For both types of rotors – “swinging bucket” and “fixed-angle” – we express the theoretically expected proportion of pelleted vesicles of a given size and the “cut-off” size of completely sedimented vesicles as dependent on the centrifugation force and duration and the sedimentation path-lengths. The proper centrifugation conditions can be selected using relatively simple theoretical estimates of the “cut-off” sizes of vesicles. Experimental verification on exosomes isolated from HT29 cell culture supernatant confirmed the main theoretical statements. Measured by the nanoparticle tracking analysis (NTA) technique, the concentration and size distribution of the vesicles after centrifugation agree with those theoretically expected. To simplify this “cut-off”-size-based adjustment of centrifugation protocol for any rotor, we developed a web-calculator.

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GOST Copy
Livshits M. A. et al. Isolation of exosomes by differential centrifugation: Theoretical analysis of a commonly used protocol // Scientific Reports. 2015. Vol. 5. No. 1. 17319
GOST all authors (up to 50) Copy
Livshits M. A., Khomyakova E., Evtushenko E. G., Lazarev V. N., Kulemin N. A., Semina S. E., Generozov E. V., GOVORUN V. M. Isolation of exosomes by differential centrifugation: Theoretical analysis of a commonly used protocol // Scientific Reports. 2015. Vol. 5. No. 1. 17319
RIS |
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RIS Copy
TY - JOUR
DO - 10.1038/srep17319
UR - https://doi.org/10.1038%2Fsrep17319
TI - Isolation of exosomes by differential centrifugation: Theoretical analysis of a commonly used protocol
T2 - Scientific Reports
AU - Livshits, Mikhail A
AU - Khomyakova, Elena
AU - Evtushenko, Evgeniy G
AU - Lazarev, Vassili N.
AU - Kulemin, Nikolay A.
AU - Semina, Svetlana E
AU - Generozov, Edward V.
AU - GOVORUN, VADIM M.
PY - 2015
DA - 2015/11/30 00:00:00
PB - Springer Nature
IS - 1
VL - 5
PMID - 26616523
SN - 2045-2322
ER -
BibTex
Cite this
BibTex Copy
@article{2015_Livshits,
author = {Mikhail A Livshits and Elena Khomyakova and Evgeniy G Evtushenko and Vassili N. Lazarev and Nikolay A. Kulemin and Svetlana E Semina and Edward V. Generozov and VADIM M. GOVORUN},
title = {Isolation of exosomes by differential centrifugation: Theoretical analysis of a commonly used protocol},
journal = {Scientific Reports},
year = {2015},
volume = {5},
publisher = {Springer Nature},
month = {nov},
url = {https://doi.org/10.1038%2Fsrep17319},
number = {1},
doi = {10.1038/srep17319}
}
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