کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1935480 | 1050666 | 2008 | 5 صفحه PDF | دانلود رایگان |

The cancer testis (CT) antigen HCA587 is highly expressed in human hepatocellular carcinoma (HCC) and induces specific T-cell responses in a significant proportion of HCC patients. To explore its potential in cancer immunotherapy, a reverse immunology approach was adopted to identify HCA587-derived HLA-A∗0201-restricted epitopes. Multiple peptides with a top ranking in various prediction programs were thus synthesized and three of them—p248–256, p140–149 and p144–152—were found to bind to HLA-A*0201 molecules with a high affinity and effectively induced a recall response of CD8+ T cells, which were either primed in vitro with the HCA587 antigen or directly isolated from HCC patients bearing HCA587+ tumors. Notably, these peptide-specific CD8+ T cells exhibited potent cytotoxic activity over HCA587+ tumor cells. Taken together, the present study has identified three new HLA-A*0201-restricted cytotoxic T cell epitopes in the CT antigen HCA587, which may serve as targets for peptide-based immunotherapy for HCC patients.
Journal: Biochemical and Biophysical Research Communications - Volume 372, Issue 2, 25 July 2008, Pages 331–335