IL-4 suppresses the expression of TLR7- and 9-induced IFN-responsive gene expression.

<p>We treated cDCs at day 6-7 of culture with IL-4 or left them untreated for 24 h. We then stimulated the cDCs with CpG 1826 (10 ug/ml) or R848 (1 ug/ml) for 6 h and then analyzed by qPCR the expression of the IFN-responsive genes ISG15 and Mx-1. All of the conditions were normalized against the control (untreated DCs in medium only) in each experiment. Results are average of three independent experiments, performed with three independent bone marrow-derived cultures from 3 different mice; *<i>p</i><0.05; **<i>p</i><0.01.