Multimer technologies for detection and adoptive transfer of antigen-specific T cells

Area of Science:

• Immunology
• Cell Biology
• Clinical Research

Background:

• Identifying and purifying functional antigen-specific T cells is crucial for scientific and clinical applications.
• Major histocompatibility complex (MHC)-peptide multimers offer a powerful method for visualizing and quantifying antigen-specific T-cell subpopulations.

Purpose of the Study:

• To review different types of MHC-peptide multimers and their applications.
• To discuss the potential impact of MHC-peptide multimers on the development of donor lymphocyte infusions (DLIs).

Main Methods:

• Utilizing various MHC-peptide multimers (dimers, tetramers, pentamers, etc.) to study T cells.
• Applying multimer technology for ex vivo isolation and expansion of T cells.
• Exploring the purification of CD8(+) T cells specific for leukemia antigens.

Main Results:

• MHC-peptide multimers enable direct visualization and quantification of antigen-specific T cells.
• These multimers have been used to assess frequencies of T cells against viral and tumor antigens.
• Recent advancements allow for the purification of leukemia-specific CD8(+) T cells.

Conclusions:

• MHC-peptide multimers are valuable tools for T-cell research and diagnostics.
• Purification of antigen-specific T cells using multimers can enhance donor lymphocyte infusions (DLIs).
• This technology may help differentiate beneficial anti-leukemic effects from graft-versus-host disease (GvHD).