F-DMA/CCL19 stimulated the cytotoxicity of T lymphocytes. When
CT26 cells were transfected with GS, F-DMA, F-DMA/pVax, DMA-CCL19,
and F-DMA/CCL19 for 72 h, the supernatants from different treatments
were added into lymphocytes and treated for 24 h, and the lymphocyte
activity was tested by the MTT test (A). When the lymphocytes were
treated for 24 h, the supernatants were added to CT26 cells and treated
for 24 h, and the CT26 cell activity was tested by MTT (B). The lymphocytes
were treated for 24 h with cell culture supernatants collected from
GS. F-DMA, F-DMA/pVax, DMA/CCL19, and F-DMA/CCL19 groups, and the
corresponding supernatants after 24 h of culture in each group were
then collected for measurement of IFN-γ (C) and TNF-α
(D) level. The lymphocytes were treated for 24 h with cell culture
supernatants collected from GS, F-DMA, F-DMA/pVax, DMA/CCL19, and
F-DMA/CCL19 groups, and the corresponding supernatants were then applied
to culture macrophages, and then the culture medium was collected
for measurement of IFN-γ (E) and TNF-α (F). F-DMA/CCL19
mediated IFN-γ and TNF-α expression was substantially
higher than that of other groups. *p < 0.05, **p < 0.01 when compared with GS, F-DMA, or F-DMA/pVax-treated
groups. The results represent three independent experiments.