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Updated: Feb 20, 2026
Mass Cytometry: Protocol for Daily Tuning and Running Cell Samples on a CyTOF Mass Cytometer
Published on: November 2, 2012
Mass Cytometry Assays for Antigen-Specific T Cells Using CyTOF
Dongxia Lin1, Holden T Maecker2
1Fluidigm Corporation, South San Francisco, CA, 94080, USA.
Insights
This study presents a new method using mass cytometry and magnetic enrichment to identify rare antigen-specific T cells. This approach enhances the detailed analysis of T cell frequency, phenotype, and function.
Area of Science:
- Immunology
- Cell Biology
- Biotechnology
Background:
- Antigen-specific T cells are crucial for adaptive immunity but often rare, making their detection challenging.
- Current methods for detecting antigen-specific T cells, like intracellular cytokine staining, have limitations in scope and sensitivity.
- Understanding rare T cell populations is vital for vaccine development and immunotherapy.
Purpose of the Study:
- To develop and validate a protocol for the efficient detection and characterization of rare antigen-specific T cells.
- To combine magnetic bead enrichment with mass cytometry for high-dimensional single-cell analysis.
- To improve the ability to dissect the frequency, phenotype, and function of antigen-specific T cells.
Main Methods:
- Utilized CyTOF® mass cytometry for high-parameter single-cell data acquisition of cytokines, chemokines, and cell-surface proteins.
- Developed a magnetic bead enrichment strategy for antigen-stimulated T cells based on CD154 and CD69 expression.
- Integrated magnetic enrichment with mass cytometry to analyze rare T cell subsets.
Main Results:
- The combined method allows for detailed dissection of antigen-specific T cell frequency, phenotype, and function.
- Enabled examination of rare T cell subsets with improved efficiency and reduced CyTOF® run times.
- Demonstrated enhanced capability to identify and characterize T cells specific to a single antigen.
Conclusions:
- Coupling magnetic enrichment with mass cytometry provides a powerful approach for studying rare antigen-specific T cells.
- This protocol significantly advances the ability to analyze complex immune cell populations.
- The method offers a more comprehensive understanding of T cell responses in various immunological contexts.
Abstract:
T Cells specific for a single antigen tend to be rare, even after expansion of memory cells. They are commonly detected by in vitro stimulation with peptides or protein, followed by staining for intracellular cytokines. In this protocol, we use CyTOF® mass cytometry to collect single-cell data on a large number of cytokines/chemokines, as well as cell-surface proteins that characterize T cells and other immune cells. We also include a method for magnetic bead enrichment of antigen-stimulated T cells, based on their expression of CD154 and CD69. Coupling magnetic enrichment with highly multi-parameter mass cytometry, this method enables the ability to dissect the frequency, phenotype, and function of antigen-specific T cells in greater detail than previously possible. Rare cell subsets can be examined, while minimizing run times on the CyTOF.
