(C) RT-qPCR quantification of pri-miR-21, pre-miR-21, miR-21-5p and miR-21-3p levels in HaCat cells treated for 24h with the PPAR/ agonist GW0742 (+), TGFβ receptor inhibitor SB431542 (+), or vehicle (-) as indicated. Pri-miR-21: GW0742 vs SB431542 P = 0.004, GW0742 vs GW0742/SB431542 P = 0.015; Pre-miR-21: Veh vs GW0742 P = 0.022, GW0742 vs SB431542 P = 0.036, GW0742 vs GW0742/SB431542 P = 0.024; miR-21-5p: GW0742 vs SB431542 P = 0.034, GW0742 vs GW0742/SB431542 P = 0.024; miR-21-3p: Veh vs GW0742 P = 0.036, GW0742 vs SB431542 P = 0.011, GW0742 vs GW0742/SB431542 P = 0.008. N=3 biological replicates, one representative experiment is shown out of two independent replicates. 