KIR Polymorphisms and MHC Class I Interaction in Rhesus Macaques
Author Information
Author(s): Colantonio Arnaud D., Bimber Benjamin N., Neidermyer William J. Jr, Reeves R. Keith, Alter Galit, Altfeld Marcus, Johnson R. Paul, Carrington Mary, O'Connor David H., Evans David T.
Primary Institution: Harvard Medical School, New England Primate Research Center
Hypothesis
How do KIR polymorphisms affect peptide-dependent binding to MHC class I ligands?
Conclusion
The study identifies Mamu-A1*00201 as a ligand for Mamu-KIR3DL05, revealing the role of KIR polymorphisms in modulating NK cell responses.
Supporting Evidence
- Mamu-A1*00201 is a common MHC class I molecule in rhesus macaques.
- Mamu-KIR3DL05 was identified as a receptor for Mamu-A1*00201.
- Binding of Mamu-KIR3DL05 to Mamu-A1*00201 is peptide-dependent.
- Polymorphisms in KIRs affect their binding avidity and peptide selectivity.
- Target cells expressing Mamu-A1*00201 suppress NK cell activation.
Takeaway
This study shows that certain proteins on immune cells can change how well they recognize and respond to viruses, which helps us understand how some viruses can escape the immune system.
Methodology
The study involved staining NK cells with Mamu-A1*00201 tetramers and analyzing the binding interactions with various SIV peptides.
Limitations
The study is limited by the specific animal model used and the generalizability of findings to other species.
Participant Demographics
Rhesus macaques (Macaca mulatta) of Indian origin.
Digital Object Identifier (DOI)
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