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Related Experiment Videos

Rapid cell isolation by magnetic flow sorting for applications in tissue engineering.

M Zborowski1, L Sun, L R Moore

  • 1Department of Biomedical Engineering, The Cleveland Clinic Foundation, OH 44195-5254, USA.

ASAIO Journal (American Society for Artificial Internal Organs : 1992)
|June 9, 1999
PubMed
Summary
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A new continuous flow magnetic cell sorter efficiently isolates specific cell types, achieving 99.6% purity for helper T cells. This technology offers a promising method for isolating delicate cells in suspension.

Area of Science:

  • Biotechnology
  • Cell Biology
  • Immunology

Background:

  • Efficient cell sorting is crucial for isolating specific cell populations, such as tissue progenitor cells.
  • Existing methods may have limitations in speed, efficiency, or applicability to fragile cells.

Purpose of the Study:

  • To build and evaluate a laboratory prototype of a continuous flow, quadrupole magnetic cell sorter.
  • To assess the purity and recovery rates of cell sorting using this novel device.

Main Methods:

  • A continuous flow, quadrupole magnetic cell sorter was developed.
  • Human peripheral lymphocytes were used as a model system.
  • Helper T cells (CD4+) were targeted using anti-CD4 antibody and magnetic colloid, followed by magnetic separation.

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Main Results:

  • The sorter achieved high purity (99.6%) and recovery (59%) of CD4+ T cells at a speed of 4,200 cells/s.
  • Recovery could be increased to 90% with a CD4+ purity of 66%.
  • The depleted fraction showed 2% CD4+ cells.

Conclusions:

  • The continuous flow magnetic cell sorter demonstrates high efficiency and purity for cell isolation.
  • This technology is applicable to various cell types in suspension, especially large and fragile cells, provided suitable antibodies are available.