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Updated: Aug 9, 2025

Visualizing Antigen Specific CD4+ T Cells using MHC Class II Tetramers
15:42

Visualizing Antigen Specific CD4+ T Cells using MHC Class II Tetramers

Published on: March 6, 2009

21.8K

A universal MHCII technology platform to characterize antigen-specific CD4+ T cells

Rohit Vyasamneni1, Victoria Kohler1, Binisha Karki1

  • 1BioNTech US, Inc., 40 Erie Street, Cambridge, MA 02139, USA.

Cell Reports Methods
|February 23, 2023
PubMed

Insights

A new platform enables rapid, high-throughput identification of CD4+ T cells, preserving their phenotype for better understanding of immune responses in health and disease. This technology aids in characterizing antigen-specific CD4+ T cells for personalized immunotherapies.

Area of Science:

  • Immunology
  • Cell Biology

Background:

  • CD4+ T cells are vital for immune function, but existing methods struggle to preserve their ex vivo phenotype, limiting in vivo function insights.
  • Understanding CD4+ T cell characteristics is crucial for both health and disease research.

Purpose of the Study:

  • To develop a flexible, rapid, and robust platform for ex vivo CD4+ T cell identification, immunophenotyping, and sorting.
  • To enable high-throughput, personalized CD4+ T cell analysis.

Main Methods:

  • Combines MHCII allele purification, allele-independent peptide loading, and multiplexed flow cytometry.
  • Utilizes single-cell sorting and multimodal analyses.

Main Results:

  • Successfully identified and characterized antigen-specific CD4+ T cells relevant to COVID-19 and cancer neoantigen immunotherapy.
  • Demonstrated a platform for high-throughput personalized CD4+ T cell identification and immunophenotyping.

Conclusions:

  • The developed platform offers a significant advancement for detecting and characterizing CD4+ T cells across various diseases.
  • This technology has the potential to guide CD4+ T cell epitope design for future immunization strategies.

Keywords:
MHC class IIantigen-specific CD4+ T cellepitope peptide exchangeflow cytometryimmunotherapyinfectious diseasemultimerpersonalized medicine

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