Fig. 6.
Immunization with apoptotic 12B1-D1 cells plus CRCL adjuvant induces IL-2 and IFN-γ secretion and T-cell proliferation of splenocytes.
12B1-D1 cells were treated with 100 μg/mL Mit-C for 1 hour and then extensively washed. Then 20 μg/mouse liver lysate, liver-derived HSP70, or CRCL was added to the cells and the mixture was injected to BALB/c mice subcutaneously on days −14 and −7. Control mice were immunized with an equal number of Mit-C–treated 12B1-D1 cells or saline. Five days after the secondary immunization, splenocytes of the immunized mice were harvested and restimulated with Mit-C–treated 12B1-D1 cells. (A) CTLL-2 bioassay was used to determine the IL-2 production. (B) IFN-γ secretion was determined by ELISPOT. (C) T-cell proliferation was determined by [3H]-thymidine incorporation. (Representative data from 1 of 3 experiments are shown.)