In vitro induction of HLA-restricted cytotoxic T lymphocytes against autologous Epstein-Barr Virus transformed B lymphoblastoid cell line.

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Abstract
Cytotoxic T lymphocytes (CTL) against autologous EBV-transformed B lymphoblastoid cell line (LCL) were induced in vitro by culturing peripheral blood lymphocytes (PBL) of healthy donors together with mitomycin C-treated autologous LCL for 6 days. The cytotoxic cells developed only from the E-rosette-positive fraction but not from the negative fraction of PBL. These CTL killed autologous LCL but not PWM-stimulated autologous PBL. In addition, the CTL killed allogeneic LCL when at least 1 of the HLA-A antigens was identical with that of the LCL of CTL donor. However, identity of HLA-B and HLA-C antigens was not enough for a significant killing of allogeneic LCL. The specificity of the CTL was also confirmed by a cold target inhibition test. These results indicated that the CTL induced specifically recognized EBV-transformed cells with HLA restriction.

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