Hamza H, Ghosh M, L?ffler MW, Rammensee HG, Planz. Identification and Relative Abundance of Naturally Presented and Cross-reactive Influenza A virus MHC class I-restricted T Cell Epitopes. Emerg Microbes Infect. 2024 Jan 19:2306959
Cytotoxic T lymphocytes are key for controlling viral infection. Unraveling CD8+ T cell-mediated immunity to distinct influenza virus strains and subtypes across prominent HLA types is relevant for combating seasonal infections and emerging new variants. Using an immunopeptidomics approach, naturally presented influenza A virus-derived ligands restricted to HLA-A*24:02, HLA-A*68:01, HLA-B*07:02, and HLA-B*51:01 molecules were identified. Functional characterization revealed multifunctional memory CD8+ T cell responses for nine out of sixteen peptides. Peptide presentation kinetics was optimal around 12 hours post infection and presentation of immunodominant epitopes shortly after infection was not always persistent. Assessment of immunogenic epitopes revealed that they are highly conserved across the major zoonotic reservoirs and may contained single substitution in vicinity of the anchor residues. These findings demonstrate how the identified epitopes promote T cell pools possibly cross-protective in individuals and can be potential targets for vaccination.
See Also:
Latest articles in those days:
- Emergence of HPAI H5N6 Clade 2.3.4.4b in Wild Birds: A Case Study From South Korea, 2023 14 hours ago
- Age-Dependent Pathogenesis of Influenza A Virus H7N9 Mediated Through PB1-F2-Induced Mitochondrial DNA Release and Activation of cGAS-STING-NF-κB Signaling 14 hours ago
- Genotypic Clustering of H5N1 Avian Influenza Viruses in North America Evaluated by Ordination Analysis 14 hours ago
- Protocol for enhanced human surveillance of avian influenza A(H5N1) on farms in Canada 1 days ago
- Evolutionary analysis of Hemagglutinin and neuraminidase gene variation in H1N1 swine influenza virus from vaccine intervention in China 1 days ago
[Go Top] [Close Window]