Using Mass Cytometry to Address Tfh and Tfr Heterogeneity

Area of Science:

• Immunology
• Cell Biology
• Biotechnology

Background:

• Single-cell technologies, like mass cytometry, provide high-dimensional protein expression data from millions of cells.
• T-follicular helper (Tfh) and T-follicular regulatory (Tfr) cells are crucial CD4 T-cell subsets within B-cell follicles.
• Tfh and Tfr cells regulate B-cell antibody production and are linked to active antibody responses.

Purpose of the Study:

• To present detailed methods for analyzing Tfh and Tfr cell populations in human samples.
• To leverage mass cytometry for high-throughput phenotyping and frequency determination of Tfh and Tfr cells.

Main Methods:

• Utilized mass cytometry to analyze protein expression on millions of individual cells.
• Developed and applied specific gating strategies to identify and quantify Tfh and Tfr cell populations within CD4 T-cells.
• Focused on human samples to assess Tfh and Tfr cell frequency and phenotype.

Main Results:

• Established a robust mass cytometry-based workflow for Tfh and Tfr cell identification.
• Enabled the precise quantification of Tfh and Tfr cell frequencies in human circulation.
• Provided insights into the phenotypic characteristics of these critical immune cell subsets.

Conclusions:

• Mass cytometry is a powerful tool for dissecting rare Tfh and Tfr cell populations.
• The presented methods facilitate the study of Tfh and Tfr cell involvement in antibody production and immune regulation.
• This approach aids in understanding the role of Tfh and Tfr cells in various antibody-mediated immune responses.