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Updated: Jul 14, 2026

Visualizing Antigen Specific CD4+ T Cells using MHC Class II Tetramers
Published on: March 6, 2009
Defining antigen-specific responses with human MHC class II tetramers
Jane H Buckner1, Ursula Holzer, Erik J Novak
1Benaroya Research Institute, Virginia Mason Research Center, 1201 Ninth Avenue, Seattle, WA 98101-2795, USA.
HLA class II tetramers enable direct detection of antigen-specific CD4(+) T cells. These cells are crucial in immune responses, and tetramers offer new tools for clinical immunology and monitoring immunotherapy effectiveness.
Area of Science:
- Immunology
- Molecular Biology
Background:
- Antigen-specific CD4(+) T lymphocytes are central to immune responses, influencing allergic and immune-mediated diseases.
- Detecting and quantifying these T cells is essential for understanding immune function and disease pathogenesis.
Purpose of the Study:
- To highlight the utility of HLA class II tetramers for identifying and analyzing antigen-specific CD4(+) T cells.
- To explore emerging applications of tetramer technology in clinical immunology for patient management and prognosis.
Main Methods:
- Utilizing flow cytometry combined with fluorescent HLA class II tetramers.
- Tetramer-based identification, recovery, and functional analysis of antigen-specific T cells.
Main Results:
- Tetramers facilitate direct detection and quantitation of antigen-specific T cells.
- Analysis of functional markers and transcripts aids in characterizing lymphocyte lineage and commitment.
- Emerging clinical applications for patient monitoring and prognosis are under development.
Conclusions:
- HLA class II tetramers are powerful tools for dissecting antigen-specific T cell populations.
- Tetramers show promise as surrogate markers for monitoring immunotherapy response in clinical settings.
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