TGFB1 and urinary bladder cancer: Transwell invasion assay showed that significant increase of bladder cancer cell invasion was observed in TGFβ1 group compared with control group and significant attenuation of bladder cancer cell invasion was observed in TGFβ1 + anti-miR-221 group compared with TGFβ1 group and TGFβ1 + anti-Con group.