TY - JOUR AB - Glypican-3 (GPC3), which is a carcinoembryonic antigen, is overexpressed in human hepatocellular carcinoma (HCC). Previously, we performed a phase I clinical trial of GPC3‑derived peptide vaccination in patients with advanced HCC, and reported that GPC3 peptide vaccination is safe and has clinical efficacy. Moreover, we proposed that a peptide‑specific CTL response is a predictive marker of overall survival in patients with HCC who receive peptide vaccination. In this study, we established GPC3‑derived peptide‑specific CTL clones from the PBMCs of an HLA‑A*02:07‑positive patient with HCC who was vaccinated with an HLA‑A2‑restricted GPC3 peptide vaccine and showed a clinical response in the phase I clinical trial. Established CTL clones were analyzed using the IFN‑γ ELISPOT assay and a cytotoxicity assay. GPC3 peptide‑specific CTL clones were established successfully from the PBMCs of the patient. One CTL clone showed cytotoxicity against cancer cell lines that expressed endogenously the GPC3 peptide. The results suggest that CTLs have high avidity, and that natural antigen‑specific killing activity against tumor cells can be induced in a patient with HCC who shows a clinical response to vaccination with the GPC3144‑152 peptide. AD - Division of Cancer Immunotherapy, Research Center for Innovative Oncology, National Cancer Center Hospital East, Kashiwa, Chiba 277‑8577, Japan AU - Tada,Yoshitaka AU - Yoshikawa,Toshiaki AU - Shimomura,Manami AU - Sawada,Yu AU - Sakai,Mayuko AU - Shirakawa,Hirofumi AU - Nobuoka,Daisuke AU - Nakatsura,Tetsuya DA - 2013/10/01 DO - 10.3892/ijo.2013.2044 EP - 1026 IS - 4 JO - Int J Oncol KW - glypican‑3 peptide vaccine CTL clone PY - 2013 SN - 1019-6439 1791-2423 SP - 1019 ST - Analysis of cytotoxic T lymphocytes from a patient with hepatocellular carcinoma who showed a clinical response to vaccination with a glypican‑3‑derived peptide T2 - International Journal of Oncology TI - Analysis of cytotoxic T lymphocytes from a patient with hepatocellular carcinoma who showed a clinical response to vaccination with a glypican‑3‑derived peptide UR - https://doi.org/10.3892/ijo.2013.2044 VL - 43 ER -