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Isolation and Analysis of Traceable and Functionalized Extracellular Vesicles from the Plasma and Solid Tissues
Published on: October 17, 2022
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Extracellular Vesicle Isolation and Analysis by Western Blotting
Emma J K Kowal1,2, Dmitry Ter-Ovanesyan3,4,5,6, Aviv Regev7,8
1Department of Genetics, Harvard Medical School, Boston, MA, USA.
Methods in Molecular Biology (Clifton, N.J.)
|August 23, 2017
Summary
This study details a protocol for isolating extracellular vesicles (EVs) using differential ultracentrifugation. It also describes how to analyze EV proteins like CD9, CD63, and CD81 via western blotting.
Area of Science:
- Cell Biology
- Biochemistry
- Molecular Biology
Background:
- Extracellular vesicles (EVs) are key mediators of intercellular communication.
- Mammalian cells release EVs, influencing biological processes.
- Current EV isolation methods, particularly ultracentrifugation, are widely used.
Purpose of the Study:
- To provide a detailed protocol for isolating EVs from cell culture media.
- To establish a method for analyzing EV protein content, specifically tetraspanins.
- To standardize EV isolation and characterization techniques.
Main Methods:
- Differential ultracentrifugation for EV isolation.
- Western blotting for the detection of EV-specific proteins.
- Analysis of tetraspanin markers (CD9, CD63, CD81) in isolated EVs.
Main Results:
- A reproducible protocol for isolating EVs was established.
- Western blotting successfully identified key EV proteins.
- Tetraspanin expression confirmed the presence of EVs.
Conclusions:
- Differential ultracentrifugation is an effective method for EV isolation.
- Western blotting is a suitable technique for EV protein analysis.
- The protocol facilitates further research into EV function and intercellular communication.
