Elucidating Methods for Isolation and Quantification of Exosomes: A Review

Area of Science:

• Biotechnology
• Cell Biology
• Nanomedicine

Background:

• Exosomes are small extracellular vesicles involved in cell signaling, immune response, and tumor metastasis.
• Accurate detection and quantification of exosomes are vital for their diagnostic and therapeutic applications.
• Current isolation and quantification methods face challenges due to exosome size and structural complexity.

Purpose of the Study:

• To comprehensively review standard methods for exosome isolation and quantification.
• To describe the principles, advantages, and disadvantages of various isolation techniques.
• To discuss exosome applications in biomedical domains.

Main Methods:

• Isolation methods reviewed include ultracentrifugation, ultrafiltration, size-exclusion chromatography, precipitation, immunoaffinity, and microfluidic technologies.
• Quantification techniques discussed are nanoparticle tracking analysis, flow cytometry, tunable resistive pulse sensing, electron microscopy, dynamic light scattering, and microfluidic devices.

Main Results:

• Each isolation method's principle, advantages, and disadvantages are detailed.
• Various quantification techniques are described with their respective strengths and limitations.
• The review covers the broad applications of exosomes in diverse biomedical fields.

Conclusions:

• Effective isolation and quantification are essential for harnessing exosome potential.
• Understanding the nuances of different methods is key to selecting appropriate techniques.
• Exosomes hold significant promise for future diagnostics and therapeutics.