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Optimized Interferon-gamma ELISpot Assay to Measure T Cell Responses in the Guinea Pig Model after Vaccination
Published on: January 20, 2019
The Ex Vivo IFN-γ Enzyme-Linked Immunospot (ELISpot) Assay
1Naval Medical Research Center, 503 Robert Grant Avenue, Silver Spring, MD, 20910, USA. martha.sedegah@med.navy.mil.
Insights
The Enzyme-linked immunospot (ELISPOT) assay quantifies single cell interferon-gamma (IFN-γ) release, crucial for evaluating cellular immune responses. This method is vital for immunology research, particularly in vaccine development studies.
Area of Science:
- Immunology
- Cellular Biology
- Vaccine Research
Background:
- The Enzyme-linked immunospot (ELISPOT) assay is a key technique for measuring immune responses at the single-cell level.
- It quantifies cytokine release, such as interferon-gamma (IFN-γ), from antigen-specific T-cells.
Purpose of the Study:
- To highlight the utility of the ELISPOT assay in quantifying single-cell cytokine release.
- To emphasize its application in assessing cellular immune responses and its importance in vaccine research.
Main Methods:
- Peripheral blood mononuclear cells (PBMC) are stimulated in vitro with various antigens.
- Stimulation can be short-term (20-36 hours) or long-term (up to 7 days).
- The assay quantifies specific cytokine production, including IFN-γ, IL-2, and IL-5.
Main Results:
- ELISPOT effectively quantifies single-cell cytokine secretion in response to diverse stimuli.
- The assay allows for the assessment of both short-term and long-term cellular immune responses.
Conclusions:
- The ELISPOT assay is an invaluable tool for quantifying cellular immune responses, especially IFN-γ release.
- Its versatility and application in vaccine research make it a significant technique in immunology.
Abstract:
The quantification of single cell interferon-gamma (IFN-γ) release for assessing cellular immune responses using the Enzyme-linked immunospot (ELISPOT) assay is an invaluable technique in immunology. Peripheral blood mononuclear cells (PBMC) are stimulated in vitro with recombinant proteins, peptides and recently whole malaria organisms. Stimulation may be short term (20-36 h) or long term (cultured ELISpot, up to 7 days). ELISpot is also able to quantify other cytokines secreted by antigen-specific T-cells, such as interleukin-2, interleukin-5, and other interleukins. ELISpot is playing an important role especially in vaccine research studies.
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