Figure 8. ERβ inhibits PPARγ activity in a ligand-independent manner involving SRC1+TIF2.
A–C) 3T3-L1 preadipocytes were transfected with the indicated plasmids together with pGal4-hPPARγDEF, pG5TkGL3 and renilla followed by treatment with 10 µM pioglitazone as indicated. *p<0.05 vs. pSG5+veh; # p<0,05 vs. pSG5+Pio, p<0.05 vs. ERβ+Pio, ns: not significant vs. ERβ+Pio. Values represent means±SEM of at least two independent experiments performed in triplicates. D) ChIP experiment with gonadal fat from HFD-fed wt mice and βERKO mice. IP was performed using Flag, RNA Pol II, SRC1 and TIF2 as indicated. (– no template control (NTC), + genomic DNA, input: 1% of the initial probe taken for IP). For details please see Materials and Methods.