Analysis of cell proliferation after renal cells were transfected with siRNAs. (A) siRNA1 (100 nM) and siRNA2 (100 nM) for uc009yby.1 were transfected into 786-O cells and suppressed cell proliferation compared with NC-transfected cells. siRNA1: Day 0, P=0.7844; day 1, P=0.0018; day 2, P=0.0001; day 3, P<0.0001; and day 4, P<0.0001. siRNA2: Day 0, P=0.7592; day 1, P=0.0015; day 2, P<0.0001; day 3, P<0.0001; day 4, P<0.0001. (B) ACHN cells transfected with siRNA1 (100 nM) and siRNA2 (100 nM) for uc009yby.1 revealed attenuated cell proliferation. siRNA1: Day 0, P=0.7289; day 1, P=0.0157; day 2, P=0.0026; day 3, P<0.0001; day 4, P<0.0001. siRNA2: Day 0, P=0.7926; day 1, P=0.0031; day 2, P<0.0005; day 3, P<0.0001; day 4, P<0.0001. siRNA, small interfering RNA; OD, optical density; NC, negative control. *P<0.05; **P<0.001.