AI Article Synopsis

  • - Extracellular vesicles (EVs) are important for disease diagnosis and therapy, but isolating them from biofluids with high purity is challenging and lacks a standardized method.
  • - A study used a NanoCoulter Counter to analyze and compare the quality of several EV isolation techniques, including ultracentrifugation and commercial kits.
  • - Results showed that while some commercial methods produced higher particle concentrations, traditional ultracentrifugation provided the highest purity, helping to advance the use of EVs in disease biomarkers and treatments.

Article Abstract

Extracellular vesicles (EVs) have attracted great interest due to their great potential in disease diagnosis and therapy. The separation of EVs from complex biofluids with high purity is essential for the accurate analysis of EVs. Despite various methods, there is still no consensus on the best method for high-quality EV isolation and reliable mass production. Therefore, it is important to offer a standardized method for characterizing the properties (size distribution, particle concentration and purity) of EV preparations from different isolation methods. Herein, we employed a NanoCoulter Counter based on the resistive pulse sensing (RPS) strategy that enabled multi-parameter analysis of single EVs to compare the quality and efficiency of different EV isolation techniques including traditional differential ultracentrifugation, ultrafiltration, size exclusion chromatography, membrane affinity binding and polymer precipitation. The data revealed that the NanoCoulter Counter based on the RPS strategy was reliable and effective for the characterization of EVs. The results suggested that although higher particle concentrations were observed in three commercial isolation kits and ultrafiltration, traditional differential ultracentrifugation showed the highest purity. In conclusion, our results from the NanoCoulter Counter provided reliable evidence for the assessment of different EV isolation methods, which contributed to the development of EV-based disease biomarkers and treatments.

Download full-text PDF

Source
http://dx.doi.org/10.1039/d4ay01158aDOI Listing

Publication Analysis

Top Keywords

isolation methods
12
nanocoulter counter
12
quality efficiency
8
resistive pulse
8
pulse sensing
8
counter based
8
rps strategy
8
traditional differential
8
differential ultracentrifugation
8
isolation
6

Similar Publications

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!