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Related Experiment Videos

The gluten-host interaction

M R Tighe1, P J Ciclitira

  • 1Division of Pharmacology, United Medical and Dental Schools of Guy's Hospital, London, UK.

Bailliere'S Clinical Gastroenterology
|June 1, 1995
PubMed
Summary
This summary is machine-generated.

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Researchers identified a specific toxic gliadin peptide (residues 31-49) crucial in coeliac disease pathogenesis. This discovery opens avenues for developing non-toxic cereals by manipulating wheat genomes.

Area of Science:

  • Immunology
  • Gastroenterology
  • Molecular Biology

Background:

  • Coeliac disease pathogenesis involves complex molecular interactions.
  • Specific HLA DQ alleles are essential for disease development by presenting gliadin peptides to T cells.

Purpose of the Study:

  • To investigate precise HLA-antigen interactions for developing antigen-blocking agents.
  • To identify toxic T-cell epitopes within gliadin proteins.

Main Methods:

  • Isolation of antigen-specific T cells.
  • In vivo toxicity studies of gliadin peptide sequences.

Main Results:

  • Confirmation of a toxic T-cell epitope in gliadin (residues 31-49).
  • Demonstration of in vivo toxicity of the gliadin peptide sequence 31-49.

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  • No common T-cell receptor (TCR) motifs detected yet.

    • Conclusions:

    • The identified gliadin epitope is toxic and implicated in coeliac disease.
    • Future manipulation of cereal genomes could yield non-toxic alternatives for coeliac patients.