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Overview Of Cell Separation And Isolation

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.

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Related Experiment Video

Updated: Jun 19, 2026

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow

Separating Beads and Cells in Multi-channel Microfluidic Devices Using Dielectrophoresis and Laminar Flow

Published on: February 4, 2011

Tunable cell separation using a thermo-responsive deterministic lateral displacement device.

Ze Jiang¹, Yusuke Kanno², Takasi Nisisako²

¹Department of Mechanical Engineering, School of Engineering, Institute of Science Tokyo, Tokyo 152-8550, Japan.

|September 9, 2025

Summary

This summary is machine-generated.

This study introduces a temperature-controlled microfluidic chip for tunable cell separation. The novel system precisely isolates cells of specific sizes from complex samples, enhancing biomedical research and diagnostics.

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Area of Science:

Biomedical Engineering
Microfluidics
Cell Biology

Background:

Isolating specific cell types from heterogeneous samples is crucial for research and diagnostics.
Conventional deterministic lateral displacement (DLD) systems have fixed critical diameters, limiting their flexibility.

Purpose of the Study:

To develop a thermo-responsive DLD micropillar array for tunable cell separation.
To dynamically modulate the critical diameter (Dc) of DLD systems using temperature control.

Main Methods:

Integration of poly(N-isopropylacrylamide) (PNIPAM) hydrogel micropillars within a PDMS-silicon microfluidic chip.
Utilizing a Peltier element for precise temperature adjustments (20-40 °C) to control Dc (0.8–29.0 μm).
Simulations to confirm thermal performance and experimental validation using MCF-7 cells in blood samples.

Main Results:

Demonstrated tunable cell separation with adjustable critical diameters via temperature control.
Achieved 100% purity separation of MCF-7 cells at 25 °C (average size: 17.6 μm).
Showcased selective separation of larger MCF-7 subpopulations at 26 °C (average size: 18.7 μm) while preserving cell viability.

Conclusions:

The thermo-responsive DLD platform enables precise, temperature-controlled cell selection from complex samples.
This technology offers significant potential for advancing cell-based diagnostics and biomedical research.
The tunable nature of the system broadens applications in cell isolation and analysis.