(A,B) BMMs from WT, Ifnar1−/− and Ifnar2−/− C57BL/6 mice were stimulated with recombinant mouse Ifnα1, Ifnβ or Ifnε (0.1µg/ml) for 3h. (A) Irf7 and (B) 2’5’ oas expression was measured by qRT-PCR. Data are expressed as mean + SEM. of at least three independent experiments. (C) BMMs from C57BL/6 WT mice were treated with a range of TLR ligands or transfected with Poly (I:C) and Poly (dA:dT) for 3h at 37°C. Ifnβ, Il-6 and Ifnε were measured by qRT-PCR. Data are expressed as mean + SEM. of at least three independent experiments. (D) Luciferase reporter plasmids containing Ifnα, Ifnβ, p125, or Ifnε were co-transfected with empty vector or IRF3, IRF7 or IRF5 expression vectors into HEK293 cells. Data are expressed as mean + SEM. All values are means of at least three independent experiments. *P<0.05, **P<0.01, ***P<0.001 (unpaired Student’s t-test).