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- W1569586214 startingPage "8365" @default.
- W1569586214 abstract "Transaldolase (TAL) is expressed at selectively high levels in oligodendrocytes and targeted by autoreactive T cells of patients with multiple sclerosis (MS). Among 14 TAL peptides with predicted HLA-A2 binding, TAL 168-176 (LLFSFAQAV, TALpep) exhibited high affinity for HLA-A2. Prevalence of HLA-A2-restricted CD8+ T cells specific for TALpep was increased in PBMC of HLA-A2+ MS patients, as compared with HLA-A2- MS patients, HLA-A2+ other neurological disease patients, and HLA-A2+ healthy donors. HLA-A*0201/TALpep tetramers detected increased frequency of TAL-specific CD8+ T cells, and precursor frequency of TAL-specific IFN-gamma-producing T cells was increased in each of seven HLA-A2+ MS patients tested. Stimulation by TALpep or rTAL of PBMC from HLA-A2+ MS patients elicited killing of TALpep-pulsed HLA-A2-transfected HmyA2.1 lymphoma cells, but not HLA-A3-transfected control HmyA3.1 targets. Without peptide pulsing of targets, HLA-A2-transfected, but not control MO3.13 oligodendroglial cells, expressing high levels of endogenous TAL, were also killed by CD8+ CTL of MS patients, indicating recognition of endogenously processed TAL. TCR Vbeta repertoire analysis revealed use of the TCR Vbeta14 gene by T cell lines (TCL) of MS patients generated via stimulation by TAL- or TALpep-pulsed APCs. All TAL-specific TCL-binding HLA-A*0201/TALpep tetramers expressed TCR Vbeta14 on the cell surface. Moreover, Ab to TCR Vbeta14 abrogated cytotoxicity by HLA-A2-restricted TAL-specific TCL. Therefore, TAL-specific CTL may serve as a novel target for therapeutic intervention in patients with MS." @default.
- W1569586214 created "2016-06-24" @default.
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- W1569586214 date "2005-12-08" @default.
- W1569586214 modified "2023-10-01" @default.
- W1569586214 title "CD8<sup>+</sup>T Cell-Mediated HLA-A*0201-Restricted Cytotoxicity to Transaldolase Peptide 168–176 in Patients with Multiple Sclerosis" @default.
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- W1569586214 doi "https://doi.org/10.4049/jimmunol.175.12.8365" @default.
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