Binding of BCR/ABL junctional peptides to major histocompatibility complex (MHC) class I molecules: studies in antigen-processing defective cell lines.
1994
Leukaemia-specific proteins may be recognized by T-lymphocytes as neoantigens if peptides corresponding to mutated sequences bind to major histocompatibility complex (MHC) molecules on leukaemic cells. We studied the ability of a series of synthetic peptides corresponding to the junctional sequences of BCR/ABL proteins to bind to class I molecules in two human cell lines, LBL 721.174 (T2) (HLA-A2, B5) and BM36.1 (HLA-A1, B35), and one murine cell line RMA-S (H-2K b , D b ). These cell lines are defective in intracellular peptide loading of class I molecules, resulting in markedly reduced cell surface class I expression: class I expression can be rescued by provision of peptides binding to the alleles expressed by the mutant cell
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