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Polymorphism of human minor histocompatibility antigens: T cell recognition of human minor histocompatibility peptides presented by HLA-B35 subtype molecules. 1995

Y Beck, and L Satz, and Y Takamiya, and S Nakayama, and L Ling, and Y Ishikawa, and T Nagao, and H Uchida, and K Tokunaga, and C Müller
Department of Tumor Biology, University of Tokyo, Japan.

To investigate the polymorphism of human minor histocompatibility (mH) antigens, PBLs from 23 Japanese individuals and 25 German individuals with HLA-B35 were studied by using four human mH antigen-specific, HLA-B35-restricted CTL clones. The CTL clones killed PHA-stimulated PBLs from all 23 Japanese individuals. On the other hand, they killed the PHA-stimulated PBLs from 19 of 25 German individuals and partially killed the PHA-stimulated PBLs from three German individuals (CTL weakly sensitive cell line); those from another three individuals (CTL-resistant cell line) were not killed by the CTL clones. All of three CTL weakly sensitive cell lines carry HLA-B*3503 molecules, whereas the three CTL-resistant cell lines carry HLA-B*3502, B*3507, and B*3508 molecules. The cytotoxicity of the CTL clones for three CTL weakly sensitive cell lines was enhanced by stimulation of human mH peptides isolated from HLA-B*3501 molecules purified from C1R-B*3501 cells. Small amounts of human mH peptides were isolated from B*3503 molecules purified from these three CTL weakly sensitive cell lines. Taken together, these results indicate that weak recognition by the CTL clones of three CTL weakly sensitive cell line results from a small amount of the human mH peptides presented by B*3503 molecules. The CTL-resistant cell line carrying B*3507 loaded with the human mH peptides was killed by four CTL clones, whereas the cell lines carrying B*3502 or B*3508 loaded with the peptides were not. The human mH peptides were not isolated from B*3507 molecules purified from the cell lines expressing this subtype, whereas small amounts of the human mH peptides were isolated from B*3502 and B*3508 molecules purified from the cell lines expressing the subtypes. These results indicate that failure of the CTL recognition of the cell line carrying B*3507 is due to a lack of human mH antigens in this cell line. The failure of the CTL recognition of the cell lines carrying B*3502 and B*3508 is not explained by only the amount of the human mH peptides binding to these B35 subtype molecules because the amount of the human mH peptides eluted from B*3502 and B*3508 molecules purified from the cell lines carrying these B35 subtypes is almost the same as that eluted from B*3503 molecules purified from the cell lines carrying B*3503.(ABSTRACT TRUNCATED AT 400 WORDS)

UI MeSH Term Description Entries
D007564 Japan A country in eastern Asia, island chain between the North Pacific Ocean and the Sea of Japan, east of the Korean Peninsula. The capital is Tokyo. Bonin Islands
D010446 Peptide Fragments Partial proteins formed by partial hydrolysis of complete proteins or generated through PROTEIN ENGINEERING techniques. Peptide Fragment,Fragment, Peptide,Fragments, Peptide
D011110 Polymorphism, Genetic The regular and simultaneous occurrence in a single interbreeding population of two or more discontinuous genotypes. The concept includes differences in genotypes ranging in size from a single nucleotide site (POLYMORPHISM, SINGLE NUCLEOTIDE) to large nucleotide sequences visible at a chromosomal level. Gene Polymorphism,Genetic Polymorphism,Polymorphism (Genetics),Genetic Polymorphisms,Gene Polymorphisms,Polymorphism, Gene,Polymorphisms (Genetics),Polymorphisms, Gene,Polymorphisms, Genetic
D011487 Protein Conformation The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain). Conformation, Protein,Conformations, Protein,Protein Conformations
D011994 Recombinant Proteins Proteins prepared by recombinant DNA technology. Biosynthetic Protein,Biosynthetic Proteins,DNA Recombinant Proteins,Recombinant Protein,Proteins, Biosynthetic,Proteins, Recombinant DNA,DNA Proteins, Recombinant,Protein, Biosynthetic,Protein, Recombinant,Proteins, DNA Recombinant,Proteins, Recombinant,Recombinant DNA Proteins,Recombinant Proteins, DNA
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002999 Clone Cells A group of genetically identical cells all descended from a single common ancestral cell by mitosis in eukaryotes or by binary fission in prokaryotes. Clone cells also include populations of recombinant DNA molecules all carrying the same inserted sequence. (From King & Stansfield, Dictionary of Genetics, 4th ed) Clones,Cell, Clone,Cells, Clone,Clone,Clone Cell
D003602 Cytotoxicity, Immunologic The phenomenon of target cell destruction by immunologically active effector cells. It may be brought about directly by sensitized T-lymphocytes or by lymphoid or myeloid "killer" cells, or it may be mediated by cytotoxic antibody, cytotoxic factor released by lymphoid cells, or complement. Tumoricidal Activity, Immunologic,Immunologic Cytotoxicity,Immunologic Tumoricidal Activities,Immunologic Tumoricidal Activity,Tumoricidal Activities, Immunologic
D005858 Germany A country in central Europe, bordering the Baltic Sea and the North Sea, between the Netherlands and Poland, south of Denmark. The capital is Berlin.
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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