Spermidine Inhibits IFN-DC Activation
BM monocytes were cultured with GM-CSF and IL-4 for 7 days. MoDCs were sorted and treated with 2,000 U/mL IFN-α for 24 h, and then the IFN-DCs were stimulated with 10 μg/mL R837 in the presence or absence of spermidine (SPD) for 24 h.
(A) The protein levels of TNF-α, IL-6, and IL-12/23 p40 (n = 3).
(B) Flow cytometry analysis of MHCII, CD80, and CD40 (n = 3). Data are representative of three independent experiments. Error bars represent SEM. P values were determined by two-tailed unpaired t test *p < 0.05, **p < 0.01, ***p < 0.001.