Effects of NRF2 knockdown on 5-FUR pancreatic cancer cells (CPFAC-1 and BxPC-3). (a) DCFDA staining revealed that ROS levels were higher in siNRF2 5-FUR PDAC cells than in the siNC 5-FUR PDAC cells; (b) expression of NRF2 (n = 5), HO-1 (n = 3), NQO-1 (n = 3), and ABCG-2 (n = 3) was downregulated in siNRF2 5-FUR PDAC cells, as determined by RT-qPCR; (c) Western blotting confirmed that levels of ABCG-2, HO-1, and N-cadherin were decreased, while those of E-cadherin were increased in siNRF2 5-FUR PDAC cells; (d) MTT assay results revealed that the antitumor effect of 5-FU was significantly more potent in siNRF2 5-FUR PDAC cells than in the negative control (NC) cells. * p < 0.05.