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Analysis of Simian Immunodeficiency Virus-specific CD8+ T-cells in Rhesus Macaques by Peptide-MHC-I Tetramer Staining
Published on: December 23, 2016
Erratum to: rhesus macaque MHC class I molecules show differential subcellular localizations
Cornelia Rosner1, Philip H Kruse, Torben Lübke
1Abteilung Primatengenetik, Deutsches Primatenzentrum-Leibniz, Institut für Primatenforschung, Kellnerweg 4, 37077, Göttingen, Germany.
Immunogenetics
|May 7, 2010
Summary
Rhesus macaque Major Histocompatibility Complex (MHC) class I genes, Mamu-A and Mamu-B, show diverse expression patterns. Differences in cell surface versus intracellular localization suggest varied functional roles, potentially linked to peptide-binding domains.
Area of Science:
- Immunogenetics
- Molecular Biology
- Primate Immunology
Context:
- The Major Histocompatibility Complex (MHC) class I gene family in rhesus macaques exhibits significant gene duplications, particularly in Mamu-A and Mamu-B genes.
- While MHC class I genes influence infectious disease outcomes, the functional implications of duplicated Mamu-A and Mamu-B genes and their protein expression remain largely uncharacterized.
Purpose:
- To investigate the subcellular localization of Mamu-A and Mamu-B molecules in rhesus macaques.
- To correlate expression patterns with specific Mamu gene variants and their potential functional significance.
Summary:
- AcGFP-tagged Mamu-A and Mamu-B molecules were analyzed for subcellular localization.
- Specific Mamu-A and Mamu-B variants displayed distinct expression patterns: strong cell surface and low intracellular (e.g., Mamu-A1, Mamu-B*01704), or weak cell surface and strong intracellular (e.g., Mamu-A4*1403, Mamu-B*01202).
- Differential expression was linked to the alpha1 and alpha2 domains, suggesting impaired peptide binding retains molecules intracellularly within the endoplasmic reticulum.
Impact:
- These findings reveal diverse functional roles for duplicated rhesus macaque MHC class I genes.
- Understanding these expression patterns is crucial for interpreting the role of MHC in primate immune responses and disease resistance.
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