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- W4313388308 abstract "Abstract In the course of viral infection, the immune system exploits only a fraction of the available CTL repertoire and focuses on a few of a myriad of potentially antigenic peptides. This phenomenon, known as immunodominance, depends on a number of factors, including antigen processing and transport, MHC binding, competition for antigen presenting cells, availability of the CD8 T-cell repertoire and other mechanisms that function largely by restricting the immune response. Here we elucidate a novel mechanism that increases the immunodominance of the epitope rather by enhancing the immune response. Using a peptide-specific MHC-restricted monoclonal antibody and functional assays of CTL activation, we show that T cells with high avidity for the immunodominant, H-2Dd-restricted, P18-I10 epitope expand rapidly following immunization, and this expansion in turn determines the level of the P18-I10 epitope immunodominance. This proliferation has little dependence on the number of MHC-peptide complexes. Since most self-reactive T-cells of high avidity are depleted in the thymus, the selection of immunodominant epitopes based on the expansion of high avidity T-cells in the periphery avoids the potential for autoimmunity." @default.
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- W4313388308 date "2007-04-01" @default.
- W4313388308 modified "2023-09-27" @default.
- W4313388308 title "Avidity of CD8 T-cells sharpens immunodominance. (B9)" @default.
- W4313388308 doi "https://doi.org/10.4049/jimmunol.178.supp.b9" @default.
- W4313388308 hasPublicationYear "2007" @default.
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