摘要
To find a feasible method for the stimulation of tumor-draining lymph node （TDLN） cells in preparation for use in the clinic, the CTL activity of TDLN cells induced by different stimuli （IL-2 alone, IL-2 ＋ autologous tumor antigen （atAg）, IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg） was measured by maximal LDH enzyme release. The mechanisms were explored by the observation of morphology and the detection of CD83^＋ TDLN cells. The expansion of TDLN cells by IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg was significantly higher than that by IL-2 alone or IL-2 ＋ atAg （p 〈 0.01）. Antitumor CTL activity of TDLN cells induced by IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg was significantly higher than those of other groups. The number of CD83^＋ cells within the TDLN population treated with IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg was significantly elevated. The method of stimulating TDLN cells by IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg was better than the stimulation with IL-2 or IL-2 ＋ atAg. TDLN cells induced by IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg produced more dendritic cells （DCs）. In our study, we established a system that T cells and DCs were stimulated together ex vivo, which was easy to conduct and produce promising results. It provided a new method for improving TDLN cell antitumor activity which might be used in the clinical cancer therapy. Cellular ＆ Molecular Immunology. 2008;5（4）：307-313.
To find a feasible method for the stimulation of tumor-draining lymph node （TDLN） cells in preparation for use in the clinic, the CTL activity of TDLN cells induced by different stimuli （IL-2 alone, IL-2 ＋ autologous tumor antigen （atAg）, IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg） was measured by maximal LDH enzyme release. The mechanisms were explored by the observation of morphology and the detection of CD83^＋ TDLN cells. The expansion of TDLN cells by IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg was significantly higher than that by IL-2 alone or IL-2 ＋ atAg （p 〈 0.01）. Antitumor CTL activity of TDLN cells induced by IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg was significantly higher than those of other groups. The number of CD83^＋ cells within the TDLN population treated with IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg was significantly elevated. The method of stimulating TDLN cells by IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg was better than the stimulation with IL-2 or IL-2 ＋ atAg. TDLN cells induced by IL-2 ＋ GM-CSF ＋ IL-4 ＋ atAg produced more dendritic cells （DCs）. In our study, we established a system that T cells and DCs were stimulated together ex vivo, which was easy to conduct and produce promising results. It provided a new method for improving TDLN cell antitumor activity which might be used in the clinical cancer therapy. Cellular ＆ Molecular Immunology. 2008;5（4）：307-313.
