摘要
Extracellular vesicles(EVs)have emerged as potential biomarkers for diagnosing a range of diseases without invasive procedures.Extracellular vesicles also offer advantages compared to synthetic vesicles for delivery of various drugs;however,limitations in segregating EVs from other particles and soluble proteins have led to inconsistent EV retrieval rates with low levels of purity.Here,we report a new high-yield(88.47%)and rapid(<20 min)EV isolation method termed size exclusion–fast protein liquid chromatography(SE-FPLC).We show SE-FPLC can effectively isolate EVs from multiple sources including EVs derived from human and mouse cells and serum samples.The results indicate that SE-FPLC can successfully remove highly abundant protein contaminants such as albumin and lipoprotein complexes,which can represent a major hurdle in large scale isolation of EVs.The high-yield nature of SE-FPLC allows for easy industrial scaling up of EV production for various clinical utilities.SE-FPLC also enables analysis of small volumes of blood for use in point-of-care diagnostics in the clinic.Collectively,SE-FPLC offers many advantages over current EV isolation methods and offers rapid clinical translation.
基金
supported by NCI R35CA263815.KAC is supported by the National Center for Advancing Translational Sciences of the National Institutes of Health under Award Numbers TL1TR003169 and UL1TR003167
The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health
We are grateful to Dr.Wenhua Guo for training KSK on cryogenic electron microscopy and Michelle Kirtley for assistance with serum samples.LM is thankful to the Shared Equipment Authority at Rice University for the support.Graphical figures in this work were created using BioRender.
