UCA1 and gastric cancer: To investigate whether UCA1 could affect gastric cancer cell proliferation and apoptosis, we used an 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide (MTT) cell proliferation assay and a flow cytometry assay to detect lentivirus-UCA1 overexpression and siRNA vectors that were used to transfect BGC-823 cells.