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Updated: Jun 17, 2026
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A Flow Cytometry-Based Cytotoxicity Assay for the Assessment of Human NK Cell Activity
Published on: August 9, 2017
Assessing licensing of NK cells
A Helena Jonsson1, Wayne M Yokoyama
1Medical Scientist Training Program, Rheumatology Division, Departments of Medicine, Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA.
Methods in Molecular Biology (Clifton, N.J.)
|December 25, 2009
Summary
Natural killer (NK) cells require licensing for full function. This study assesses NK cell licensing status by measuring interferon-gamma production in response to specific stimuli.
Area of Science:
- Immunology
- Cellular Biology
- Molecular Biology
Background:
- Natural killer (NK) cells are crucial immune cells that eliminate target cells.
- NK cell licensing, involving inhibitory receptors for self-MHC class I, determines functional competence.
- Dysfunctional NK cell licensing is implicated in various diseases.
Purpose of the Study:
- To establish a method for determining the licensing status of specific murine NK cell subsets.
- To assess NK cell activation and functional competence in vitro.
Main Methods:
- Splenocytes from mice were stimulated with plate-bound anti-NK1.1 antibody and brefeldin A.
- Intracellular cytokine staining for interferon-gamma was performed.
- Flow cytometry was used for single-cell analysis of NK cell activation.
Main Results:
- The method allows for the assessment of NK cell licensing status on a single-cell level.
- Interferon-gamma production indicates functional competence of Ly49(+) NK cell subsets.
- This technique enables detailed analysis of NK cell responsiveness.
Conclusions:
- The described method is effective for evaluating NK cell licensing.
- Understanding NK cell licensing is vital for immunotherapy and disease research.
- This approach aids in dissecting NK cell heterogeneity and function.
