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Real-Time Isolation and Versatile Detection for Extracellular Vesicles Based on Ordered Porous Layer Interferometry.

Feng Wu1, Yaoyang Li1, Linlin Zhang1

  • 1Jiangsu Key Laboratory of Medical Science and Laboratory Medicine, Department of Laboratory Medicine, School of Medicine, Jiangsu University, Zhenjiang 212013, China.

Analytical Chemistry
|March 6, 2025
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Summary

This study introduces a novel real-time method for isolating extracellular vesicles (EVs) with over 90% efficiency. This technique enhances liquid biopsy applications, including prostate cancer detection, by enabling rapid isolation and concentration measurement.

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Area of Science:

  • Biotechnology
  • Nanotechnology
  • Biomedical Engineering

Background:

  • Extracellular vesicles (EVs) show promise for therapeutics and diagnostics.
  • Current EV isolation methods face challenges with efficiency and biofluid complexity.

Purpose of the Study:

  • To develop a real-time EV isolation and detection technique.
  • To improve the efficiency and applicability of EV isolation from various biofluids.

Main Methods:

  • Utilized ordered porous layer interferometry with a silica colloidal crystal film.
  • Integrated real-time monitoring for online concentration detection during isolation.
  • Applied the method to isolate EVs from cells and urine.

Main Results:

  • Achieved EV isolation efficiency greater than 90%.
  • Demonstrated high diagnostic value for prostate cancer liquid biopsy using urine EVs.
  • Enabled comparison of EV membrane protein expression and binding kinetics.

Conclusions:

  • The multifunctional approach offers rapid EV isolation and concentration detection.
  • This method provides a novel strategy for drug target screening and liquid biopsy.
  • The technique is applicable to various body fluids for enhanced diagnostics.