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Related Experiment Videos

Flow cytometry for natural killer T cells: multi-parameter methods for multifunctional cells.

Leonid S Metelitsa1

  • 1Division of Hematology-Oncology, Department of Pediatrics, Children's Hospital Los Angeles and Keck School of Medicine, University of Southern California, Los Angeles, CA 90027, USA. lmetelitsa@chla.usc.edu

Clinical Immunology (Orlando, Fla.)
|March 30, 2004
PubMed
Summary

Invariant natural killer T (iNKT) cells are crucial immune regulators. This study details flow cytometry methods for analyzing these rare cells in human blood, aiding research in immunity, autoimmunity, and cancer.

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Invariant natural killer T (iNKT) cells are a conserved T cell subset with effector-memory phenotype.
  • They express CD161 and recognize self-glycolipids and alpha-galactosylceramide (alphaGalCer) presented by CD1d.
  • iNKT cells rapidly produce cytokines, influencing Th-2 and Th-1 responses, with roles in infection, autoimmunity, and cancer models.

Purpose of the Study:

  • To discuss flow cytometry applications for studying human invariant natural killer T (iNKT) cells.
  • To address the challenges in analyzing iNKT cells due to their low frequency in peripheral blood.

Main Methods:

  • Multi-parameter flow cytometry is the primary tool for iNKT cell analysis.
  • Methods cover identification, enumeration, subset characterization, and intracellular cytokine detection.

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  • Quantitative analysis of secreted molecules, cytotoxicity, and migration are also discussed.

    • Main Results:

    • Flow cytometry enables comprehensive analysis of iNKT cell functions.
    • Specific techniques are vital for overcoming the low frequency of iNKT cells in human samples.
    • The discussed applications facilitate detailed characterization of iNKT cell populations.

    Conclusions:

    • Flow cytometry is indispensable for robust iNKT cell research.
    • Accurate analysis of iNKT cells is critical for understanding their roles in health and disease.
    • These methods support advancements in immunology, autoimmunity, and cancer research.