Preparation of Crude Sample (Either Plasma or Serum) by Pelleting Larger Vesicles and Cellular Debris
2:04
Digestion of Non-exosomal Blood Proteins and Removal of Small Proteins/Peptides by Centrifuge Ultrafiltration
4:21
Purification of Vesicles by Size Exclusion Chromatography (SEC)
5:45
Concentration of Purified Exosomes/Total Protein Quantification and Quantification/Sizing of Exosomes by Nanoparticle Tracking Analysis (NTA)
7:09
Results: Increased Vesicle Yield and Exosome-specific Markers After Purification
8:15
Conclusion
副本
The overall goal of this procedure is to purify vesicles from blood while reducing co-purifying proteins and complexes which can interfere with downstream analysis including nanoparticle tracking and proteomics. This method can help answer key que
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Here, we present a protocol to purify exosomes from both plasma and serum with reduced co-purification of non-exosomal blood proteins. The optimized protocol includes ultrafiltration, protease treatment, and size exclusion chromatography. Enhanced purification of exosomes benefits downstream analyses, including more accurate quantification of vesicles and proteomic characterization.