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New tools to identify regulatory T cells.

Luis Graca1

  • 1Institute of Molecular Medicine, Faculty of Medicine, University of Lisbon, Lisbon, Portugal. lgraca@fm.ul.pt

European Journal of Immunology
|May 20, 2005
PubMed
Summary

New tools now allow direct identification of regulatory T cells (Treg cells) using Foxp3 expression. This breakthrough enables quantitative analysis of Treg cells in human diseases.

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • Direct identification of regulatory T cells (Treg cells) at the single-cell level has hindered research into their role in human diseases.
  • The transcription factor Foxp3 is a key marker for Treg cell function, but suitable identification reagents were previously lacking.

Purpose of the Study:

  • To address the lack of tools for direct Treg cell identification.
  • To enable quantitative analysis of Foxp3(+) Treg cells in human pathology.

Main Methods:

  • Development of transgenic mice expressing fluorescent proteins under Foxp3 control.
  • Development of monoclonal antibodies (mAbs) for identifying Foxp3(+) cells via histology and flow cytometry.

Main Results:

  • Emergence of novel tools, including transgenic mice and specific mAbs, for Treg cell identification.
  • These tools facilitate direct detection and quantification of Foxp3(+) cells.

Conclusions:

  • New reagents and transgenic models provide the means to directly study Treg cells.
  • Quantitative analysis of Foxp3(+) Treg cells in human diseases is now feasible.

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