目的:研究辛伐他汀(SIM)对人高转移卵巢癌HO-8910PM细胞Ras信号通路的影响。方法:不同浓度SIM分别作用HO-8910PM细胞48 h后,采用RT-PCR分别检测Ras、HIF-1α、NF-κB(P65)、Rho A和VEGF m RNA的表达,Western blot分别检测Ras、ERK2、-κ...目的:研究辛伐他汀(SIM)对人高转移卵巢癌HO-8910PM细胞Ras信号通路的影响。方法:不同浓度SIM分别作用HO-8910PM细胞48 h后,采用RT-PCR分别检测Ras、HIF-1α、NF-κB(P65)、Rho A和VEGF m RNA的表达,Western blot分别检测Ras、ERK2、-κBα、NF-κB(p65)、HIF-1α和VEGF的蛋白水平,γ-^(32)P掺入法检测MAPK活性。结果 :SIM能使NF-κB(p65)、VEGF和RHo A m RNA表达降低,影响Ras蛋白在胞浆和胞膜间的分布,下调ERK2、HIF-1α、VEGF蛋白表达,并抑制活化的NF-κB往核内易位。结论:SIM抗卵巢癌机制与抑制Ras/MAPK信号传导及其与NF-κB通路间的交叉通讯密切相关。展开更多
Objective： The aim of the study was to investigate the mechanism of gemcitabine （GEM） combination with radiation on the high metastasis human ovarian cancer cell line （HO-8910PM）. Methods： Human ovarian cancer c...Objective： The aim of the study was to investigate the mechanism of gemcitabine （GEM） combination with radiation on the high metastasis human ovarian cancer cell line （HO-8910PM）. Methods： Human ovarian cancer cell line HO- 8910PM was treated with different concentrations of gemcitabine for 24 h, then the cells were counted. In the study of GEM combination with radiation, an efficiency of colony formation was observed; the cell cycle and apoptosis were analyzed by flow cytometry; the experiment of depend on the time and its radio sensitivity were observed by using mitotic index with the cells for each 24, 48, 72 and 96 h after experiment. Results： It suggested that the GEM had an inhibition effect on the human ovarian cancer cell line. The alive cell numbers were decreased by following a height of GEM concentration. When GEM in combina- tion with a radiation, the suppression was significantly increased than that of single GEM therapy. The efficiency of colony formation was significantly lower, under this condition the cell could be arrested at G0-G1 phase and could be decreased to enter into the S phase; the apoptosis percentage could be significantly increased; especially, under the 4 Gy and 6 Gy doses the cell apoptosis was more obvious. GEM combination with radiation had depended on the time to the cells; mitotic index of the calls in combination group was observed significantly lower than that of single GEM therapy or single radiation, and this showed that it had an effect of radiosensitivity. Conclusion： The GEM has a significant growth inhibition on the human ovarian cancer cells, GEM combination with radiation could induce HO-8910PM cell occurred arrested and apoptosis. It has depended on the time and has a radiosensitivity effect. The result shows that it is a better method to treat the human ovarian cancer by using radiotherapy combined with gemcitabine.展开更多
文摘目的:研究辛伐他汀(SIM)对人高转移卵巢癌HO-8910PM细胞Ras信号通路的影响。方法:不同浓度SIM分别作用HO-8910PM细胞48 h后,采用RT-PCR分别检测Ras、HIF-1α、NF-κB(P65)、Rho A和VEGF m RNA的表达,Western blot分别检测Ras、ERK2、-κBα、NF-κB(p65)、HIF-1α和VEGF的蛋白水平,γ-^(32)P掺入法检测MAPK活性。结果 :SIM能使NF-κB(p65)、VEGF和RHo A m RNA表达降低,影响Ras蛋白在胞浆和胞膜间的分布,下调ERK2、HIF-1α、VEGF蛋白表达,并抑制活化的NF-κB往核内易位。结论:SIM抗卵巢癌机制与抑制Ras/MAPK信号传导及其与NF-κB通路间的交叉通讯密切相关。
文摘Objective： The aim of the study was to investigate the mechanism of gemcitabine （GEM） combination with radiation on the high metastasis human ovarian cancer cell line （HO-8910PM）. Methods： Human ovarian cancer cell line HO- 8910PM was treated with different concentrations of gemcitabine for 24 h, then the cells were counted. In the study of GEM combination with radiation, an efficiency of colony formation was observed; the cell cycle and apoptosis were analyzed by flow cytometry; the experiment of depend on the time and its radio sensitivity were observed by using mitotic index with the cells for each 24, 48, 72 and 96 h after experiment. Results： It suggested that the GEM had an inhibition effect on the human ovarian cancer cell line. The alive cell numbers were decreased by following a height of GEM concentration. When GEM in combina- tion with a radiation, the suppression was significantly increased than that of single GEM therapy. The efficiency of colony formation was significantly lower, under this condition the cell could be arrested at G0-G1 phase and could be decreased to enter into the S phase; the apoptosis percentage could be significantly increased; especially, under the 4 Gy and 6 Gy doses the cell apoptosis was more obvious. GEM combination with radiation had depended on the time to the cells; mitotic index of the calls in combination group was observed significantly lower than that of single GEM therapy or single radiation, and this showed that it had an effect of radiosensitivity. Conclusion： The GEM has a significant growth inhibition on the human ovarian cancer cells, GEM combination with radiation could induce HO-8910PM cell occurred arrested and apoptosis. It has depended on the time and has a radiosensitivity effect. The result shows that it is a better method to treat the human ovarian cancer by using radiotherapy combined with gemcitabine.
