title: Improved generation of HLA class I/peptide tetramers.
abstract: As a tetrameric major histocompatibility complex (MHC) class I-peptide complex (tetramer) is capable of detecting antigen-specific cytotoxic T lymphocyte (CTL) by flow cytometry, significant information about the generation of in vivo immunity can be obtained. It is, however, difficult to make a soluble wild type of MHC class I heavy chain by the prokaryotic expression system. Therefore, we developed a new method for making soluble mutant HLA-A*2402 heavy chain. In this method, signal sequences were deleted, and the codon was changed to silent mutated nucleotide sequences that bacteria could use as preferable codon. When purified mutant HLA-A*2402 molecules were examined for the protein generation by SDS-polyacrylamide gel electrophoresis (PAGE) and western blotting using anti-HLA class I monoclonal antibody (mAb) as compared with wild type, a large amount of mutant heavy chain could be detected. In contrast, the expression of wild-type stable HLA-A*2402 heavy chain molecule was not detected in this system. Consequently, by using mutant HLA-A*2402/peptide tetramers, CTL precursors (CTLp) that specifically recognize antigenic peptide derived from the X;18 chromosomal translocations of synovial sarcoma were detected in patients' PBL.
authors.affiliation: Department of Pathology, Sapporo Medical University School of Medicine, South 1, West 17, Chuo-ku, Japan.
authors.forename: Yuriko
authors.initials: Y
authors.lastname: Sato
authors.forename: Hiroeki
authors.initials: H
authors.lastname: Sahara
authors.forename: Tomohide
authors.initials: T
authors.lastname: Tsukahara
authors.forename: Masako
authors.initials: M
authors.lastname: Kondo
authors.forename: Yoshihiko
authors.initials: Y
authors.lastname: Hirohashi
authors.forename: Yuki
authors.initials: Y
authors.lastname: Nabeta
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kawaguchi
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Ikeda
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Torigoe
authors.forename: Shingo
authors.initials: S
authors.lastname: Ichimiya
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Tamura
authors.forename: Takuro
authors.initials: T
authors.lastname: Wada
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Yamashita
authors.forename: Masashi
authors.initials: M
authors.lastname: Goto
authors.forename: Hideo
authors.initials: H
authors.lastname: Takasu
authors.forename: Noriyuki
authors.initials: N
authors.lastname: Sato
mesh_terms: D001483:Base Sequence; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology; D018984:Epitopes, T-Lymphocyte / Q000235:genetics* / Q000276:immunology; D004926:Escherichia coli / Q000235:genetics; D015234:HLA-A Antigens / Q000096:biosynthesis / Q000737:chemistry / Q000235:genetics* / Q000276:immunology; D006801:Humans; D007143:Immunoglobulin Heavy Chains / Q000235:genetics* / Q000276:immunology; D008969:Molecular Sequence Data; D009154:Mutation; D015514:Oncogene Proteins, Fusion / Q000235:genetics / Q000276:immunology; D016133:Polymerase Chain Reaction; D011994:Recombinant Proteins / Q000096:biosynthesis / Q000235:genetics / Q000276:immunology; D013584:Sarcoma, Synovial / Q000276:immunology; D013602:T-Lymphocytes, Cytotoxic / Q000276:immunology; D014170:Transformation, Genetic / Q000235:genetics / Q000276:immunology; D001613:beta 2-Microglobulin / Q000235:genetics / Q000276:immunology
chemical_list: D018984:Epitopes, T-Lymphocyte; D015234:HLA-A Antigens; D007143:Immunoglobulin Heavy Chains; D015514:Oncogene Proteins, Fusion; D011994:Recombinant Proteins; C116512:SYT-SSX fusion protein; D001613:beta 2-Microglobulin