Functional analysis of human NK cells by flow cytometry.

Area of Science:

• Immunology
• Cell Biology
• Biotechnology

Background:

• Natural killer (NK) cells are crucial lymphocytes in innate immunity, mediating cytokine secretion and target cell lysis.
• NK cell activity is precisely controlled by diverse activating and inhibitory receptors.
• Advances in multi-color flow cytometry and monoclonal antibodies (mAbs) have significantly enhanced the study of NK cell phenotypes and functions.

Purpose of the Study:

• To present detailed protocols for evaluating human NK cell degranulation and cytokine production using flow cytometry at the single-cell level.
• To provide methodologies for assessing NK cell responses in peripheral blood samples.

Main Methods:

• Utilized multi-color flow cytometry for high-resolution analysis of NK cell populations.
• Employed specific monoclonal antibodies (mAbs) targeting various phenotypic and functional NK cell markers.
• Developed protocols for quantifying single-cell degranulation and intracellular cytokine production in human NK cells.

Main Results:

• Established robust flow cytometry protocols for analyzing human NK cell functional responses.
• Demonstrated the utility of these methods for single-cell level assessment of degranulation and cytokine secretion.
• Validated the applicability of the techniques for research and clinical diagnostics.

Conclusions:

• The presented flow cytometry protocols offer valuable tools for in-depth investigation of human NK cell biology.
• These techniques provide critical insights into the regulation of NK cell responses.
• The methods are applicable for diagnosing immunodeficiency syndromes and monitoring immune status.