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Related Experiment Video

Updated: Apr 3, 2026

Microfluidic Device for the Separation of Non-Metastatic MCF-7 and Non-Tumor MCF-10A Breast Cancer Cells Using AC Dielectrophoresis
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Deformability and size-based cancer cell separation using an integrated microfluidic device.

Long Pang1, Shaofei Shen, Chao Ma

  • 1Colleges of Veterinary Medicine and Science, Northwest A&F University, Yangling, Shaanxi 712100, P. R. China. jywang@nwsuaf.edu.cn.

The Analyst
|September 15, 2015
PubMed
Summary
This summary is machine-generated.

This study introduces a novel microfluidic device for label-free cell separation using filtration and microvalves. The integrated system effectively separates cancer cells from blood samples with high purity and recovery, overcoming clogging issues.

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Area of Science:

  • Biomedical Engineering
  • Microfluidics
  • Cell Biology

Background:

  • Filtration methods for cell sorting are label-free but suffer from clogging and variable resistance.
  • Cell size and deformability are key parameters for label-free cell separation.

Purpose of the Study:

  • To develop an integrated microfluidic device for efficient and label-free cell separation.
  • To overcome limitations of traditional filtration methods, such as clogging and cell accumulation.

Main Methods:

  • Combining microstructure-constricted filtration with pneumatic microvalves in a microfluidic device.
  • Utilizing differences in cell size and deformability for separation.
  • Implementing periodical sorting and real-time cell release.

Main Results:

  • Successfully separated cancer cell lines (MCF-7, MDA-MB-231, MDA231-LM2) based on deformability with >75% purity.
  • Achieved >90% cell recovery and >80% purity for cancer cells from blood samples.
  • Demonstrated prevention of cell accumulation and clogging through periodical sorting and release.

Conclusions:

  • The novel microfluidic device offers an improved approach for label-free cancer cell separation.
  • The device exhibits high collection recovery and purity, outperforming current filtration methods.
  • Potential application as a sample preparation platform for clinical and research use.