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Related Concept Videos

Overview Of Cell Separation And Isolation01:20

Overview Of Cell Separation And Isolation

Cell separation was first achieved in 1964 by S. H. Seal, who separated large tumor cells from the smaller blood cells using filtration. Two years later, Pohl and Hawk performed experiments on how cells respond differently to a nonuniform electric field based on the cell type. Such observations were the inception of cell separation methods, which allow isolating a single cell type from a heterogeneous sample.
Subcellular Fractionation01:32

Subcellular Fractionation

The homogenate obtained after cell lysis contains various membrane-bound organelles that can be further separated into pure fractions by subcellular fractionation. These isolates are used to study specific cellular components, analyze localized protein activity, and are even employed in diagnostics. Fractionation is typically achieved using centrifugation methods, the most common being density-gradient and differential centrifugation.
Differential Centrifugation
Differential centrifugation is...

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Updated: Jul 7, 2026

Purification of High Yield Extracellular Vesicle Preparations Away from Virus
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Hydrogel-Based Extracellular Vesicle Isolation Method from Various Biological Solutions.

Ryota Kajihara1, Kyohei Tobinaga1, Riho Tanigaki1

  • 1Sanyo Chemical Industries, Ltd., Kyoto 605-0995, Japan.

ACS Applied Bio Materials
|December 18, 2025
PubMed
Summary

Researchers developed hydrogel adsorption separation (HAS) for isolating extracellular vesicles (EVs). This method offers high purity and reduced bias, advancing EV research and applications.

Keywords:
EV isolationbioseparationexosomeextracellular vesicle (EV)hydrogel

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Area of Science:

  • Biotechnology
  • Cell Biology
  • Biochemistry

Background:

  • Extracellular vesicles (EVs) are vital in cell communication and physiological processes.
  • Current EV isolation methods like ultracentrifugation have limitations in purity, yield, and subpopulation bias.
  • There is a need for improved EV isolation techniques for research and clinical applications.

Purpose of the Study:

  • To develop a novel method for selective and high-purity isolation of extracellular vesicles (EVs).
  • To address the limitations of conventional EV isolation techniques.
  • To provide a versatile tool for advancing EV-based research and applications.

Main Methods:

  • Hydrogel adsorption separation (HAS) utilizing a hydrogel scaffold with palmitoyl groups.
  • Selective adsorption of EVs based on membrane vesicle affinity.
  • Isolation of EVs from various biofluids.

Main Results:

  • HAS enables selective and high-purity isolation of EVs.
  • The method reduces bias towards specific EV subpopulations.
  • EVs isolated via HAS are compatible with downstream analyses like proteomics and flow cytometry.

Conclusions:

  • Hydrogel adsorption separation (HAS) is a practical and versatile method for EV isolation.
  • This technique enhances the purity and reduces bias in EV isolation.
  • HAS facilitates advancements in both basic and applied EV research.