Related Experiment Video
Updated: Aug 8, 2026
Analysis of Simian Immunodeficiency Virus-specific CD8+ T-cells in Rhesus Macaques by Peptide-MHC-I Tetramer Staining
Published on: December 23, 2016
Dynamic quantification of MHC class I-peptide presentation to CD8+ T cells via intracellular cytokine staining
Ken C Pang1, Joe Q Z Wei, Weisan Chen
1T cell Laboratory, Ludwig Institute for Cancer Research, Melbourne Branch, Austin Health, Heidelberg, VIC, 3084, Australia.
Insights
Researchers developed a sensitive intracellular cytokine staining (ICS) method to measure MHC class I-peptide presentation to CD8+ T cells. This new tool aids vaccine and immunotherapy development by simplifying antigen presentation studies.
Area of Science:
- Immunology
- Molecular Biology
- Vaccinology
Background:
- Understanding antigen processing and presentation is crucial for developing effective vaccines and immunotherapies.
- Existing methods for studying MHC class I-peptide presentation have limitations in sensitivity, applicability, and require extensive cell line development.
Purpose of the Study:
- To develop a widely applicable and highly sensitive method for quantifying MHC class I-peptide presentation to CD8+ T cells.
- To provide a practical tool for studying antigen processing and presentation, particularly in early stages and for ex vivo T cell analysis.
Main Methods:
- Development of a novel method based on intracellular cytokine staining (ICS).
- The ICS method quantitates MHC class I-peptide presentation dynamically and relatively.
- The method utilizes ex vivo T cells, avoiding the need for cell line maintenance.
Main Results:
- The ICS method is highly sensitive and widely applicable for assessing MHC class I-peptide presentation.
- It can evaluate antigen presentation in early stages and examine cross-presentation.
- The technique does not require fixation or labeling of antigen-presenting cells (APCs).
Conclusions:
- The developed ICS method offers a simple yet powerful tool for studying antigen processing and presentation.
- This approach overcomes limitations of current methods, facilitating research in vaccinology and immunotherapy.
- The technique is valuable for direct analysis of ex vivo T cells, streamlining experimental workflows.
Abstract:
In order to further our basic understanding of antigen processing and presentation as well as to translate that knowledge into clinically effective vaccines and immunotherapies, having appropriate tools to study MHC class I-peptide presentation is highly desirable. Current methods are based upon HPLC fractionation of extracted peptides, monoclonal Ab, multivalent T cell receptors (TCR), T cell hybridomas, TCR transgenic cells, and T cell lines. However, each of these is associated with problems that make them either difficult to apply generally or too insensitive to adequately quantitate antigen presentation. We have developed a method based upon intracellular cytokine staining (ICS) that dynamically and relatively quantitates MHC class I-peptide presentation to CD8+ T cells in a manner that is both widely applicable and highly sensitive. It is well-suited to assess antigen presentation in its early stages, does not require fixation nor labeling of antigen presenting cells (APC), can be used to examine cross-presentation, and is able to directly employ ex vivo T cells which obviates the need for the development and maintenance of T cell lines and hybridomas. Our method represents a simple yet powerful tool that others interested in studying antigen processing and presentation should find of great practical value.
More Related Videos
08:37In Situ MHC-tetramer Staining and Quantitative Analysis to Determine the Location, Abundance, and Phenotype of Antigen-specific CD8 T Cells in Tissues
Published on: September 22, 2017
12:09Use of Single Chain MHC Technology to Investigate Co-agonism in Human CD8+ T Cell Activation
Published on: February 28, 2019
