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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
Anti-SIV cytolytic molecules in pigtail macaques
Erik Rollman1, Stephen J Turner, Katherine Kedzierska
1Department of Microbiology and Immunology, University of Melbourne, Melbourne 3010, Australia.
AIDS Research and Human Retroviruses
|July 31, 2008
Summary
Researchers sequenced granzyme and perforin genes in pigtail macaques, revealing genetic differences from humans. These findings enable new tools for studying SIV control in macaques.
Area of Science:
- Immunology
- Virology
- Genetics
Background:
- Cytotoxic CD8 T cells eliminate SIV-infected cells via granzyme and perforin release.
- Understanding these effector mechanisms is crucial for controlling Simian Immunodeficiency Virus (SIV).
Purpose of the Study:
- To sequence granzyme A, B, and K, and perforin in pigtail macaques.
- To identify genetic polymorphisms in these molecules across humans, rhesus macaques, and pigtail macaques.
- To develop molecular tools for studying SIV-specific CD8 T cell responses.
Main Methods:
- Sequencing of granzyme A, B, K, and perforin genes in pigtail macaques.
- Comparative sequence analysis with human and rhesus macaque sequences.
- Development of multiplex PCR assays.
- Flow cytometry to study perforin and granzyme B release.
Main Results:
- Pigtail macaque sequences showed high similarity to rhesus macaque sequences (0.4-1.1% difference) but substantial differences from human sequences (3.8-8.1% difference).
- Multiplex PCR assays were successfully developed.
- Perforin and granzyme B release from SIV-specific CD8 T cells was studied using flow cytometry.
Conclusions:
- The generated sequences and developed tools facilitate further research into the cytolytic control of SIV in pigtail macaques.
- Genetic variations identified may influence the efficacy of SIV control mechanisms.
