This study examined the effects of ursolic acid （UA） on the proliferation and apoptosis of a human ovarian cancer cell line, CAOV3. The CAOV3 cells were cultured in the RPMI 1640 media and treated with different con...This study examined the effects of ursolic acid （UA） on the proliferation and apoptosis of a human ovarian cancer cell line, CAOV3. The CAOV3 cells were cultured in the RPMI 1640 media and treated with different concentrations of UA （0, 10, 20, 40 μmol/L）. The proliferation rate of the CAOV3 cells was determined by MTT assay. The apoptosis rate was measured by flow cytometry. ERK activity was detected by immunoprecipitation and the expressions of p-ERK1/2, MKP-1, Bax and Bcl-2 by Western blotting. The results showed that the proliferation rate was significantly decreased in the cells treated with UA as compared with that in the non-treated cells （P〈0.05）. The intracellular ERK activity and p-ERK1/2 expression were also reduced in the UA-treated cells, while the MKP-1 expression was elevated. Moreover, the apoptosis was found in the CAOV3 cells exposed to UA; the Bax expression was increased and the Bcl-2 expression decreased. The apoptosis rate in the UA-treated cells was much higher than that in the non-treated cells （P〈0.05）. It is concluded that UA can inhibit the proliferation of CAOV3 cells by suppressing the ERK activity and the expression of p-ERK1/2. And it can also induce the apoptosis of the CAOV3 cells by up-regulating the Bax expression and down-regulating the Bcl-2 expression.展开更多
目的实时观测辛二酰苯胺异羟肟酸(SAHA)和肿瘤坏死因子相关凋亡诱导配体(TRAIL)联合使用对三阴性乳腺癌细胞MDA-MB-231生长状态的影响。方法应用实时无标记细胞分析系统(RTCA)动态监测SAHA和TRAIL联合使用对乳腺癌MDA-MB-231细胞生长状...目的实时观测辛二酰苯胺异羟肟酸(SAHA)和肿瘤坏死因子相关凋亡诱导配体(TRAIL)联合使用对三阴性乳腺癌细胞MDA-MB-231生长状态的影响。方法应用实时无标记细胞分析系统(RTCA)动态监测SAHA和TRAIL联合使用对乳腺癌MDA-MB-231细胞生长状况的影响,并通过Biostation IM活细胞工作站收集各种处理因素对MDA-MB-231细胞增殖干扰作用的形态学证据。结果 x CELLigence RTCA显示SAHA和TRAIL具有协同抑制MDA-MB-231细胞生长的作用,其中50 ng/m L TRAIL与5μmol/L SAHA联合作用效果最佳。活细胞工作站显示SAHA和TRAIL联合处理对MDA-MB-231细胞生长的抑制效果较SAHA或TRAIL单独处理更显著。结论 SAHA和TRAIL联合使用对三阴性乳腺癌细胞MDA-MB-231的生长具有协同抑制作用。展开更多
文摘This study examined the effects of ursolic acid （UA） on the proliferation and apoptosis of a human ovarian cancer cell line, CAOV3. The CAOV3 cells were cultured in the RPMI 1640 media and treated with different concentrations of UA （0, 10, 20, 40 μmol/L）. The proliferation rate of the CAOV3 cells was determined by MTT assay. The apoptosis rate was measured by flow cytometry. ERK activity was detected by immunoprecipitation and the expressions of p-ERK1/2, MKP-1, Bax and Bcl-2 by Western blotting. The results showed that the proliferation rate was significantly decreased in the cells treated with UA as compared with that in the non-treated cells （P〈0.05）. The intracellular ERK activity and p-ERK1/2 expression were also reduced in the UA-treated cells, while the MKP-1 expression was elevated. Moreover, the apoptosis was found in the CAOV3 cells exposed to UA; the Bax expression was increased and the Bcl-2 expression decreased. The apoptosis rate in the UA-treated cells was much higher than that in the non-treated cells （P〈0.05）. It is concluded that UA can inhibit the proliferation of CAOV3 cells by suppressing the ERK activity and the expression of p-ERK1/2. And it can also induce the apoptosis of the CAOV3 cells by up-regulating the Bax expression and down-regulating the Bcl-2 expression.
文摘目的实时观测辛二酰苯胺异羟肟酸(SAHA)和肿瘤坏死因子相关凋亡诱导配体(TRAIL)联合使用对三阴性乳腺癌细胞MDA-MB-231生长状态的影响。方法应用实时无标记细胞分析系统(RTCA)动态监测SAHA和TRAIL联合使用对乳腺癌MDA-MB-231细胞生长状况的影响,并通过Biostation IM活细胞工作站收集各种处理因素对MDA-MB-231细胞增殖干扰作用的形态学证据。结果 x CELLigence RTCA显示SAHA和TRAIL具有协同抑制MDA-MB-231细胞生长的作用,其中50 ng/m L TRAIL与5μmol/L SAHA联合作用效果最佳。活细胞工作站显示SAHA和TRAIL联合处理对MDA-MB-231细胞生长的抑制效果较SAHA或TRAIL单独处理更显著。结论 SAHA和TRAIL联合使用对三阴性乳腺癌细胞MDA-MB-231的生长具有协同抑制作用。
