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- W4313348043 abstract "Abstract The molecular basis for the difference in the strength of T cell responses to self vs alloantigens is unknown, but may reflect how T cells are selected in the thymus. Because T cells with a high affinity for foreign as opposed to self MHC molecules are able to mature, it has been proposed that alloreactive T cells may be more strongly dependent upon interaction with MHC residues than are self-restricted T cells. This study was undertaken to rigorously address this hypothesis. Whereas other studies have compared self vs alloantigen recognition of different MHC alleles by a single T cell clone, we have compared self vs alloantigen recognition of a single MHC allele, H-2Ld, by a large panel of self-restricted and alloreactive T cell clones. Target cells expressing Ld molecules mutated at several different potential TCR contact residues were analyzed to determine which residues are important for recognition by self-restricted vs alloreactive T cells. We unequivocally demonstrate that self-restricted and alloreactive T cells do not differ, but rather are comparably dependent on interaction with MHC residues. Importantly, both self-restricted and alloreactive T cells are dependent upon the same MHC residues as primary contacts and, in addition, share a common recognition pattern of Ld. Furthermore, our analysis enables us to provide a model for allotype-specific T cell recognition of Ld vs Kb class I molecules." @default.
- W4313348043 created "2023-01-06" @default.
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- W4313348043 date "1999-09-15" @default.
- W4313348043 modified "2023-10-16" @default.
- W4313348043 title "Alloreactive and Syngeneic CTL Are Comparably Dependent on Interaction with MHC Class I α-Helical Residues" @default.
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- W4313348043 doi "https://doi.org/10.4049/jimmunol.163.6.3217" @default.
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