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Related Experiment Videos

Dual receptor T-cells. Implications for alloreactivity and autoimmunity

E Padovan1, G Casorati, P Dellabona

  • 1Basel Institute for Immunology, Switzerland.

Annals of the New York Academy of Sciences
|July 7, 1995
PubMed
Summary

Up to one-third of mature T-cells express two T-cell receptors (TCRs), potentially recognizing a wider range of antigens. This dual TCR subset may play a role in autoimmune diseases and alloreactivity.

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Area of Science:

  • Immunology
  • Cell Biology

Background:

  • T-cell receptors (TCRs) are crucial for adaptive immunity.
  • Typically, T-cells are thought to express a single type of TCR.

Purpose of the Study:

  • To investigate the expression of V alpha chains in mature T-cells.
  • To determine the prevalence and functional implications of dual TCR expression on T-cells.

Main Methods:

  • Utilized monoclonal antibodies targeting human V alpha chains.
  • Quantified T-cell populations expressing distinct V alpha chains.

Main Results:

  • Estimated that up to one-third of mature T-cells express two distinct V alpha chains.
  • These V alpha chains form two functional and independent T-cell receptors.

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Conclusions:

  • A significant subset of T-cells expresses dual TCRs, potentially broadening antigen specificity.
  • Dual TCR-bearing T-cells warrant further investigation for their roles in alloreactivity and autoimmunity.