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TCR gene polymorphisms and autoimmune disease

R A Kay1

  • 1Department of Pathology, Ninewells Hospital & Medical School, Dundee, UK.

European Journal of Immunogenetics : Official Journal of the British Society for Histocompatibility and Immunogenetics
|April 1, 1996
PubMed
Summary

Abnormalities in T-cell receptor (TCR) genes, including inherited variations and polymorphisms, can lead to faulty T-cell function and autoimmune diseases. Understanding TCR gene diversity is key to autoimmune disease research.

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Area of Science:

  • Immunology
  • Genetics

Background:

  • Autoimmune diseases arise from immune system dysregulation.
  • T-cell receptors (TCRs) are crucial for self/non-self discrimination.
  • TCR abnormalities are implicated as a cause of autoimmune conditions.

Purpose of the Study:

  • To review the genomic organization of TCR genes.
  • To explain the genetic mechanisms generating TCR diversity.
  • To discuss the association between TCR gene polymorphisms and autoimmune diseases.

Main Methods:

  • Review of existing literature on TCR gene structure and function.
  • Analysis of genetic mechanisms, including somatic recombination and allelic variation.
  • Examination of studies investigating germline polymorphisms in TCR genes.

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Main Results:

  • TCR diversity arises from extensive gene segments (TCRAV, TCRAJ, TCRBV) and somatic recombination.
  • Allelic variation and polymorphisms in coding/non-coding TCR gene regions contribute to TCR diversity.
  • Inherited TCR gene abnormalities can predispose individuals to aberrant T-cell function.

Conclusions:

  • The polymorphic nature of TCRs, driven by genetic factors, is fundamental to their function.
  • Germline variations in TCR genes represent a potential predisposing factor for autoimmune diseases.
  • Further research into TCR genetics is essential for understanding and potentially treating autoimmune disorders.