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Related Experiment Video

Updated: May 3, 2026

Author Spotlight: Development of a Large-Scale, Reproducible Production Method for Exosome Mimetics Using Magnetic Nanoparticles

Author Spotlight: Development of a Large-Scale, Reproducible Production Method for Exosome Mimetics Using Magnetic Nanoparticles

Published on: January 26, 2024

Immunomagnetic hydrogel nanofibrils for exosomes isolation.

Xiaorong Song¹, Mingyang Li¹, Wenya Chang¹

¹Institute of Microphysiological Systems, Nantong First People's Hospital, State Key Laboratory of Digital Medical Engineering, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu, 210096, China.

Analytica Chimica Acta

|May 1, 2026

Summary

A new immunomagnetic hydrogel nanofibril (IMHNF) method rapidly isolates highly pure exosomes for liquid biopsy. This technique enhances proteomic analysis and shows promise for prostate cancer detection.

Keywords:

Biofluids Exosomes (EXOs)Hydrogel nanofibrils Isolation Proteomics

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Protein Digestion, Ultrafiltration, and Size Exclusion Chromatography to Optimize the Isolation of Exosomes from Human Blood Plasma and Serum

Published on: April 13, 2018

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Last Updated: May 3, 2026

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Protein Digestion, Ultrafiltration, and Size Exclusion Chromatography to Optimize the Isolation of Exosomes from Human Blood Plasma and Serum

Protein Digestion, Ultrafiltration, and Size Exclusion Chromatography to Optimize the Isolation of Exosomes from Human Blood Plasma and Serum

Published on: April 13, 2018

Area of Science:

Biotechnology
Nanotechnology
Biomarker Discovery

Background:

Exosomes (EXOs) are vital biomarker sources for liquid biopsy.
Traditional EXO isolation methods like ultracentrifugation (UC) are inefficient, yielding low purity and potentially damaging EXOs.
Existing magnetic bead (MB) methods struggle with stability, slow response, and contamination, limiting proteomic insights.

Purpose of the Study:

To develop a novel, rapid, and high-purity exosome isolation method.
To overcome the limitations of current exosome separation techniques.
To improve proteomic analysis of exosomes for clinical applications.

Main Methods:

Utilized CD63-targeted aptamers functionalized on immunomagnetic hydrogel nanofibrils (IMHNFs).
Employed specific interaction between CD63 on exosomes and aptamers on IMHNFs for separation.
Evaluated IMHNF performance against conventional magnetic beads and ultracentrifugation.

Main Results:

IMHNFs demonstrated 8-fold faster magnetic responsivity and superior suspension stability compared to conventional MBs.
Rapid exosome isolation achieved within 30 minutes, significantly faster than UC.
IMHNFs yielded 3.28-8.05-fold higher purity, reduced contaminating proteins, and richer proteomic information, with over 10-fold signal intensity for CD63.
Identified 332 upregulated proteins in urine-derived exosomes from prostate cancer patients, including 61 known PCa biomarkers.

Conclusions:

The IMHNFs method offers superior magnetic separation, high-purity exosome enrichment, and enhanced proteomic analysis.
This technique is universal across multiple biofluids, advancing immunomagnetic separation technology.
IMHNFs show significant potential for exosome development in liquid biopsy and clinical research.