Inhibition of alloreactive cytotoxic T lymphocytes by peptides from the α2, domain of HLA-AZ

Department of Pediatrics , Stanford University, Palo Alto, California, United States
Nature (Impact Factor: 41.46). 02/1987; 325(6105):625-8. DOI: 10.1038/325625a0
Source: PubMed


Class I major histocompatibility complex (MHC) molecules function in the recognition of antigens by cytotoxic T lymphocytes (CTL). Although this biological role is firmly established and much has been learnt about their structure and polymorphic variation, little is known of the regions of class I molecules that are involved in functional interactions with components of the T-cell surface. Here we show that peptides derived from residues 98-113 of the alpha 2 domain of HLA-A2 specifically inhibit the recognition of target cells by many HLA-A2-specific CTL. In addition to identifying a region that is probably involved in binding the T-cell receptor these results raise the possibility that alloreactive CTL may recognize degraded fragments of class I histocompatibility antigens.

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