UAP1L1 and gastric cancer: In order to explore the role played by UAP1L1 in the development and progression of gastric cancer, lentiviruses expressing shRNA targeting UAP1L1 (shUAP1L1) or shCtrl (as negative control) were prepared and used to knockdown the expression of UAP1L1 in BGC-823 and SGC-7901 cells with a transfection efficiency of >80% (Supplementary Figure 1).