Extracellular-Vesicle Isolation from Different Biological Fluids by Size-Exclusion Chromatography

Area of Science:

• Biochemistry
• Nanotechnology
• Biomedical Engineering

Background:

• Extracellular vesicles (EVs) are nanovesicles containing biomarkers from their cell of origin.
• EVs hold potential for noninvasive biomarker discovery and nanotherapeutics.
• Current EV isolation methods often lack standardization and yield impure preparations.

Purpose of the Study:

• To describe a standardized method for isolating extracellular vesicles (EVs) from biological fluids.
• To highlight the utility of size-exclusion chromatography (SEC) for EV purification.
• To prepare samples and EV products for downstream applications.

Main Methods:

• Isolation of EVs from biological fluids using size-exclusion chromatography (SEC).
• Sample preparation for starting material and purified EV product.
• Guidelines for preparing EVs for downstream analyses.

Main Results:

• SEC provides a user-friendly and scalable method for EV purification.
• SEC effectively removes contaminating non-EV molecules, ensuring EV purity.
• The described method facilitates the preparation of pure EVs for various applications.

Conclusions:

• Size-exclusion chromatography (SEC) is a promising technique for standardized EV isolation.
• Pure EV preparations are essential for reliable biomarker discovery and therapeutic applications.
• This unit provides a practical protocol for EV isolation and preparation using SEC.