电离辐射对卵巢癌细胞SKVCR多药耐药性的影响
首发时间:2013-07-25
摘要:目的:探讨不同电离辐射方式对卵巢癌多药耐药性的影响。方法:采用MTT法观察卵巢癌耐药细胞SKVCR2.0和卵巢癌细胞SKOV-3对长春新碱(VCR)、顺铂(DDP)、吡柔比星(THP)的药物敏感性。选取长春新碱诱导的卵巢癌耐药细胞株SKVCR2.0给予照射。照射方案分为常规分割(2Gy/次,1次/天)和超分割(1Gy/次,2次/天,间隔4h)两种,总剂量为6Gy。采用CCK-8法测量不同照射方案下卵巢癌耐药细胞SKVCR2.0存活率;采用MDC法测量在不同照射方案下卵巢癌耐药细胞SKVCR2.0的自噬发生率。在上述基础上,加入自噬抑制剂3-MA,再测量其存活率和自噬发生率。结果:卵巢癌耐药细胞SKVCR2.0较卵巢癌细胞SKOV-3具有多药耐药性。随着长春新碱的浓度升高,卵巢癌耐药细胞株SKVCR2.0的细胞存活率降低,但给予照射后,细胞存活率升高,自噬发生率明显增加,且超分割较常规分割自噬发生率更高。加入自噬抑制剂3-MA后,自噬发生率明显降低。结论:分割剂量电离辐射通过提高自噬水平促进肿瘤多药耐药。
For information in English, please click here
The effect of irradiation on ovarian cancer cell (SKVCR)'s multidrug resistance
Abstract:Objective: To discuss the effect of irradiation to ovarian cancer cell's multidrug resistance.Methods:MTT assay was used to detect the drug sensiticities of the cells in three groups to VCR, DDP and THP. Choose ovarian cancer cell SKVCR2.0, then irradiate it. The method of irradiation includes conventional fraction and hyperfraction. The total dose is 6 Gy. As a result, the cell viability is tested by CCK-8, and the incidence of autophagy is tested by MDC. Then testd cell viability and the incidence of autophagy after adding 3-MA.Results: Compared with SKOV-3, SKVCR2.0 has multidrug resistance. As the concentration of VCR, the cell viability of SKVCR2.0 decreased, while given after irradiation, cell survival increased, the incidence of autophagy increased significantly, and a higher incidence of autophagy in hyperfraction group. In addition, while adding 3-MA, incidence of autophagy of the two groups decreased.Conclusions: Fractionated irradiation leads to multidrug resistance through increased the incidence of autophagy.
Keywords: ovarian cancer cell irradiation multidrug resistance
论文图表:
引用
No.****
同行评议
共计0人参与
勘误表
电离辐射对卵巢癌细胞SKVCR多药耐药性的影响
评论
全部评论0/1000