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Isolation of human eosinophils.

Kaiser G Lim1, Peter F Weller1

  • 1Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts.

Current Protocols in Immunology
|April 25, 2008
PubMed
Summary

This study presents a fast and reproducible method for isolating highly purified eosinophils from peripheral blood using anti-CD16 immunomagnetic beads. The protocol includes a staining method to assess eosinophil purity, aiding immunological research.

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Area of Science:

  • Immunology
  • Cell Biology
  • Hematology

Background:

  • Eosinophils play crucial roles in immune responses, particularly in allergic reactions and parasite defense.
  • Accurate isolation of pure eosinophil populations is essential for studying their functions and therapeutic potential.

Purpose of the Study:

  • To describe a reliable and efficient protocol for the isolation of highly purified eosinophils from peripheral blood.
  • To provide a method for assessing the purity of isolated eosinophils.

Main Methods:

  • Peripheral blood is fractionated sequentially using negative selection with anti-CD16 immunomagnetic beads.
  • Eosinophils are separated first from mononuclear cells, followed by separation from CD16(+) neutrophils.
  • A support protocol details a staining method for evaluating eosinophil purity.

Main Results:

  • The described technique allows for the isolation of highly purified eosinophils.
  • The protocol is characterized as easy to use, fast, and highly reproducible.
  • The staining method effectively evaluates the purity of the isolated eosinophil populations.

Conclusions:

  • This protocol offers a robust method for obtaining pure eosinophils for research purposes.
  • The technique's speed and reproducibility make it valuable for immunological studies.
  • Accurate purity assessment ensures the reliability of downstream eosinophil-based experiments.

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