کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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2168127 | 1092377 | 2006 | 9 صفحه PDF | دانلود رایگان |
Since virus-specific cytotoxic T lymphocytes (CTLs) play a critical role in preventing the spread of hepatitis C virus (HCV), vaccine-based HCV-specific CTL induction could be a promising strategy to treat HCV-infected patients. In this study, we tried to identify HCV2a-derived epitopes, which can induce human leukocyte antigen (HLA)-A24-restricted and peptide-specific CTLs. Peripheral blood mononuclear cells of HCV2a-infected patients or healthy donors were stimulated in vitro with HCV2a-derived peptides, which were prepared based on the HLA-A24 binding motif. As a result, three peptides (HCV2a 576–584, HCV2a 627–635, and HCV2a 1085–1094) efficiently induced peptide-specific CTLs from HLA-A24+ HCV2a-infected patients as well as healthy donors. The cytotoxicity was exhibited by peptide-specific CD8+ T cells in an HLA-A24-restricted manner. In addition, the HCV2a 627–635 peptide was frequently recognized by immunoglobulin G of HCV2a-infected patients. These results indicate that the identified three HCV2a peptides might be applicable to peptide-based immunotherapy for HLA-A24+ HCV2a-infected patients.
Journal: Cellular Immunology - Volume 241, Issue 1, May 2006, Pages 38–46