MBD3 inhibits EMT through suppressing TGF-β/Smad signalling in pancreatic cancer cells. (A) MBD3 knockdown in PANC1 and PaTu8988 cells induced EMT, as detected by a decrease in E-cadherin and increases in Vimentin, α-SMA, Snail, N-cadherin and β-catenin. (B) Treatment of PaTu8988 and SW1990 cells with Flag-MBD3 reversed EMT, as defined by an increase in E-cadherin and decreases in Vimentin, α-SMA, Snail, N-cadherin and β-catenin. (C) Immunoblotting of Smad2/3, p-Smad2/3, TGF-β in PANC1 and PaTu8988 cells treated with sh-MBD3 or sh-EGFP. β-Tubulin was used as a loading control. (D) Immunoblotting of Smad2/3, p-Smad2/3, TGF-β in SW1990, and PaTu8988 cells transfected with Flag-MBD3 or Vector. β-tubulin was used as a loading control.