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Updated: Sep 6, 2025

Paper-based Devices for Isolation and Characterization of Extracellular Vesicles

Paper-based Devices for Isolation and Characterization of Extracellular Vesicles

Published on: April 3, 2015

Highly Efficient Isolation and Sensitive Detection of Small Extracellular Vesicles Using a Paper-Based Device.

Lang Zhang¹, Wen Yin¹, Yanli Tong^2,3

¹School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China.

Analytical Chemistry

|June 24, 2022

Summary

We developed a novel paper-based device for rapid isolation of small extracellular vesicles (sEVs). This cost-effective method significantly improves sEV yield, purity, and recovery compared to traditional techniques.

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Paper-based Devices for Isolation and Characterization of Extracellular Vesicles

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Area of Science:

Biotechnology
Materials Science
Analytical Chemistry

Background:

Small extracellular vesicles (sEVs) are crucial for intercellular communication.
Current sEV isolation methods face challenges like low purity, yield, and time consumption.
Efficient sEV isolation is vital for research and biomedical applications.

Purpose of the Study:

To develop a facile and efficient paper-based device for small extracellular vesicle (sEV) isolation.
To improve upon traditional ultracentrifugation methods for sEV purification.
To enable rapid, cost-effective, and visually detectable sEV isolation.

Main Methods:

Development of a 3D paper chip device (sEV-IsoPD) utilizing size exclusion and immunoaffinity capture.
Integration of the device with a peristaltic pump-driven flow system.
Characterization of sEV isolation efficiency, purity, recovery, and detection limits.

Main Results:

The sEV-IsoPD achieved a 5.1x higher yield, 1.6x higher purity, and 7.5x higher recovery than ultracentrifugation.
Isolation time was reduced to 30 minutes, with significantly lower instrument cost.
Quantitative visual detection of sEV concentration was demonstrated with a wide linear range and low detection limit.

Conclusions:

The paper-based device offers an efficient and practical approach for rapid sEV isolation and detection.
This technology holds promise for advancing sEV preparation and disease diagnosis.
The sEV-IsoPD represents a significant improvement over conventional isolation techniques.