AG1478对U87细胞增殖、细胞周期和凋亡的影响

目的 观察表皮生长因子受体抑制剂Tyrphostin AG1478对人脑胶质瘤U87细胞增殖、细胞周期和细胞凋亡的影响.方法 噻唑蓝(MTT)比色法检测不同浓度Tyrphostin AG1478作用于体外培养的人脑胶质瘤U87细胞24 h后的细胞生存率,流式细胞仪检测不同浓度Tyrphostin AG1478作用于体外培养的人脑胶质瘤U87细胞24 h后细胞周期分布和细胞凋亡.结果 5、10、15、20 μmol/L的Tyrphostin AG1478作用人脑胶质瘤U87细胞24 h后细胞生存率分别为(7 8.93±11.95)%、(46.42±4.12)%、(42.13±7.54)%和(37.48±4.69)%;0、10、20 μmol/L的Tyrphostin AG1478作用人脑胶质瘤U87细胞24 h后细胞凋亡率分别为(10.19±3.15)%、(32.02±1.60)%和(54.35±2.80)%;0、10、20 μmol/L的Tyrphostin AG1478作用人脑胶质瘤U87细胞24 h后细胞主要分布在G0～G1期,分别为(51.20±1.21)%、(78.61±1.57)%和(82.73±0.77)%,实验组与对照组比较差异均有统计学意义(P＜0.05).结论 Tyrphostin AG1478抑制体外人脑胶质瘤细胞增殖,阻滞细胞周期在G0～G1期,诱导细胞凋亡,均呈浓度依赖性.

Abstract：

Objective To investigate the effects of Tyrphostin AG1478 on glioma U87 cells proliferation, cells cycle and apoptosis. Methods U87 cells were cultured for 24 h in the medium which contained AG1478 with different concentrations (0, 5, 10, 15, 20 μmol/L). The methyl thiazolyl tetrazolium(MTT) assay was used to detect the survival rate, and the cells cycle and apoptosis of the cells were examined by using flow cytometry. Results The cells proliferation was obviously inhibited by AG1478 in a dose-dependent manner. The survival rate of the cells in 5, 10, 15, 20 μmol/L AG1478 groups was (78.93 ±11.95)%, (46.42 ±4. 12)%, (42. 13 ±7.54)% and (37.48 ±4.69)% respectively, which was all significantly higher than that in 0 μ mol/L AG1478 group (P ＜0. 05 ). The apoptotic rate in 10, 25μmol/L AG1478 groups was (32.02 ± 1.60)% and (54. 35 ± 2. 80)% respectively, significantly higher than that in 0 μmol/L AG1478 group ( P ＜ 0. 05 ). The cells cycle was obviously inhibited by AG1478 in a dose-dependent manner. The percentage of cells treated with 10 and 20 μmol/L AG1478 in Go-G1 phase was ( 78. 61 ± 1.57 ) % and ( 82. 73 ± 0. 77 ) % respectively, significantly higher than that in 0 μmol/L AG1478 group (P ＜ 0. 05 ). Conclusion The growth inhibition of glioma U87 cells caused by AG1478 may be associated with apoptotsis induction and the G0-G1 arrest. AG1478 was expected to become a new anti-tumor drug in human glioma.

Effects of AG1478 on human glioma cells proliferation, cells cycle and apoptosis

Objective To investigate the effects of Tyrphostin AG1478 on glioma U87 cells proliferation, cells cycle and apoptosis. Methods U87 cells were cultured for 24 h in the medium which contained AG1478 with different concentrations (0, 5, 10, 15, 20 μmol/L). The methyl thiazolyl tetrazolium(MTT) assay was used to detect the survival rate, and the cells cycle and apoptosis of the cells were examined by using flow cytometry. Results The cells proliferation was obviously inhibited by AG1478 in a dose-dependent manner. The survival rate of the cells in 5, 10, 15, 20 μmol/L AG1478 groups was (78.93 ±11.95)%, (46.42 ±4. 12)%, (42. 13 ±7.54)% and (37.48 ±4.69)% respectively, which was all significantly higher than that in 0 μ mol/L AG1478 group (P ＜0. 05 ). The apoptotic rate in 10, 25μmol/L AG1478 groups was (32.02 ± 1.60)% and (54. 35 ± 2. 80)% respectively, significantly higher than that in 0 μmol/L AG1478 group ( P ＜ 0. 05 ). The cells cycle was obviously inhibited by AG1478 in a dose-dependent manner. The percentage of cells treated with 10 and 20 μmol/L AG1478 in Go-G1 phase was ( 78. 61 ± 1.57 ) % and ( 82. 73 ± 0. 77 ) % respectively, significantly higher than that in 0 μmol/L AG1478 group (P ＜ 0. 05 ). Conclusion The growth inhibition of glioma U87 cells caused by AG1478 may be associated with apoptotsis induction and the G0-G1 arrest. AG1478 was expected to become a new anti-tumor drug in human glioma.