(A) Mice were fed with Wy-14,643 (0.1%, w/w) for 1 day and liver samples subjected to qPCR. (B) For in vivo Gadd45b-luciferase assay, Gadd45b promoter (2 Kb) was cloned into the modified pGL4.10 vector. (C) In vivo luciferase activity was measured using bioluminescent imaging system in the mice (Sv129 background). Mice were injected with 10 μg of pGL4.10-Gadd45b (2 Kbp inserted) plasmid for 2 days using the hydrodynamic tail vein injection method and followed by 24 h Wy-14,643 (0.1%, w/w) diet administration. Con, Control; pLuc, pGL4.10 vector; pLuc-2K, pGL4.10-Gadd45b-promoter (2 Kbp); Wy, Wy-14,643; ***, p < 0. 0001.