白藜芦醇对人肾细胞癌786-0细胞存活素及p27蛋白表达的影响

摘要

目的 探讨白藜芦醇( Res )对人肾细胞癌细胞存活素、p27蛋白表达的影响. 方法 使用 Res培养液(25 μmol·L-1)作用人肾细胞癌786-0细胞12,24及48 h后,应用流式细胞术检测786-0细胞周期和凋亡情况,采用蛋白质免疫印迹法检测细胞存活素、p27 蛋白的表达情况,以空白培养液作为对照组. 结果 实验组 G1期[ ( 64. 87 ± 3.76)%]及G2期[(9.91±0.82)%]比例显著性降低(P<0.05),S期[(25.05±3.12)%]比例显著性升高(P<0.05);实验组在12,24和48 h 等不同时间点的细胞凋亡率[(5.12±0.64)%,(5.71±0.49)%,(5.84±0.30)%]均明显高于对照组[(0.72±0.27)%,(0.93±0.25)%,(1.12±0.21)%,P<0.05];实验组存活素蛋白表达水平明显高于对照组(P<0.05),且随时间延长表达呈显著性升高(P<0.05);实验组p27蛋白表达水平明显低于对照组(P<0.05),且随时间延长表达水平呈显著性降低(P<0.05);实验组细胞存活素与p27蛋白表达之间呈负相关性关系(P<0.05). 结论 Res通过抑制p27蛋白的表达而上调存活素的表达水平,进而促进肾细胞癌786-0细胞的凋亡.%Objective To investigate the effect of resveratrol ( Res ) on the expression of survivin, p27 protein in human renal cell carcinoma 786-0 cells. Methods The cell cycle and apoptosis of 786-0 cells were detected by flow cytometry, and the expression of survivin and p27 protein of 786-0 cells was detected by Western blotting at time point of 12, 24 and 48 h after human renal cell carcinoma 786-0 cells were cultured with Res ( 25μmol·L-1 ) and blank medium, respectively. Results The ratio in G1 phase [(64.87±3.76)%] and G2 phase [(9.91±0.82)%] in the experimental group decreased significantly (P<0.05), and the ratio of S phase [(25.05±3.12)%] increased significantly (P<0.05).The apoptosis rate of experimental group at 12, 24 and 48 h [(5.12±0.64)%, (5.71±0.49)%, (5.84±0.30)%] was significantly higher than that of the control group [ ( 0. 72 ± 0. 27 )%, ( 0. 93 ± 0. 25 )%, ( 1. 12 ± 0. 21 )%, P<0. 05 ] . The expression of survivin protein in experimental group was significantly higher than that of the control group ( P<0. 05 ) , and the expression was significantly increased with time prolonging (P<0.05).The expression of p27 protein in experimental group was significantly lower than that of the control group (P<0.05), and the expression level was significantly decreased in time-dependent manner (P<0.05).There was a negative correlation between the expression of survivin and p27 protein in the experimental group ( P<0.05) . Conclusion Res could inhibit the expression of p27 protein and up-regulate survivin expression level, and promote the apoptosis of renal cell carcinoma 786-0 cells.