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Related Experiment Videos

Sheep CD1 genes and proteins.

J Hopkins1, B M Dutia, S M Rhind

  • 1Department of Veterinary Pathology, University of Edinburgh, Scotland, UK. john.hopkins@ed.ac.uk

Veterinary Immunology and Immunopathology
|March 4, 2000
PubMed
Summary
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Sheep CD1 genes, crucial for presenting non-peptide antigens to T-cells, show complex genetic arrangements. This makes sheep a valuable model for studying CD1 molecule functions in vivo.

Area of Science:

  • Immunology
  • Genetics
  • Molecular Biology

Background:

  • CD1 proteins are structurally and evolutionarily related to MHC class I molecules.
  • CD1b and CD1c molecules present non-peptide antigens to T-cells and are involved in protection against mycobacterial infections.
  • The sheep CD1 genetic arrangement is the most complex identified in any animal species to date.

Purpose of the Study:

  • To review the properties of monoclonal antibodies specific for sheep CD1.
  • To describe the cellular distribution and physicochemical characteristics of sheep CD1 molecules.
  • To present the current state of knowledge on sheep CD1 genetics.

Main Methods:

  • Monoclonal antibody characterization against sheep CD1 molecules.
  • Phenotypic and immunochemical analyses of sheep CD1 expression.

Related Experiment Videos

  • NH2-terminal sequencing for identifying OvCD1E.
  • Review of existing sheep CD1 gene cloning data.

    • Main Results:

    • Sheep possess at least seven CD1 genes (CD1B, D, E), representing a complex genetic arrangement.
    • OvCD1B comprises at least three distinct genes, with potential polymorphism and splice variants.
    • Most anti-sheep CD1 antibodies react with OvCD1b, suggesting two variants.
    • Evidence for OvCD1E exists via protein sequencing, with gene cloning pending.

    Conclusions:

    • The complex sheep CD1 family, including OvCD1B, OvCD1D, and OvCD1E, offers a relevant model for in vivo CD1 research.
    • Further gene cloning is needed to confirm the existence and characteristics of OvCD1E.
    • Understanding sheep CD1 genetics and protein function is crucial for advancing immunology research.