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| 1 | Influence on radiosensitivity of lung glandular cancer cells when ERCC1 gene silenced by targeted siRNA显示文摘Objective:To identify the influence on radiosensitivity of lung glandular cancer cells when excisions repair cross-complementing group1(ERCC1) gene was silenced by targeted siR NA.Methods:siR NA which targeting to ERCC1 and control siR NA was designed and synthesized.The human lung glandular cancer SPC-A-1 cells was transfected.A total of 56 nude mice were divided into two groups,and two kinds of SPC-A-1 cells were transplanted to armpit of right forelimb,to establish the nude mice subcutaneous xenotransplanted tumor model of human lung glandular cancer cells.After the tumor was developed,the nude mice were randomly divided into four groups and accepted different doses of X-Ray radiation,then the change of tumor volume,survival time of mice in every group were recorded and the average lifetime was calculated.Twenty-one days later of X-ray experiment,two mice were taken and sacrificed in each group and the tumors organizations were stripped.The cell apoptosis rate and cell cycle distributions were obtained by FCM(flow cytometry).Results:The volume of tumor which ERCC1 gene was silenced was less than single irradiation group after X-ray irradiation,and the growth speed was slower and the lifetime of mice was lengthened as well(P<0.05).The cells apoptosis rate and the rate of G2/M cells which ERCC1 gene was silenced were higher than the same dose control group and the rate of G_1 cells were lower,which indicated that the cells could be stopped at G_2/M point,the cell proliferation was inhibited,the cell apoptosis was promoted and the radiation sensitivity was improved after the ERCC1 was silenced.Conclusions:The radiation sensitivity of lung glandular tumor could be improved after the ERCC1 gene was silenced by siR NA. | Ying-Jie Ren Xin-Quan Lv Cai-Xia Guo | 2016 | Asian Pacific Journal of Tropical Medicine2016，9，7： | 1 |
| 2 | BRCA-1、ERCC mRNA在大肠癌组织中的表达及对铂类化疗预后的影响显示文摘目的探讨大肠癌患者组织中乳腺癌敏感蛋白(BRCA)-1、核苷酸切除修复交叉互补基因(ERCC)1的表达及对铂类化疗预后的影响。方法选取58例大肠癌患者,均给予FOLFOX方案化疗,并运用免疫组化方法检测BRCA-1、ERCC mRNA两种基因在大肠癌患者组织蜡块中的表达,探讨其对铂类化疗后预后的影响。结果大肠癌组织BRCA-1阳性表达率高于阴性表达率,ERCC mRNA阴性表达率大于阳性表达率;不同的临床分期、淋巴细胞转移与否与BRCA-1、ERCC mRNA表达差异均有统计学意义(P<0.05)。BRCA-1在不同分化程度之间表达率差异具有统计学意义(P<0.05)。生存分析发现,BRCA-1、ERCC mRNA阳性表达的中位生存期分别为48.35个月和36.72个月,阴性表达患者中位生存期为44.58个月和48.10个月。BRCA-1阳性、ERCC mRNA阴性表达与生存时间呈正相关性(P<0.01)。结论 BRCA-1阳性表达、ERCC mRNA阴性表达对生存时间有影响。在接受铂类药物化疗后其总生存时间与中位生存期均较BRCA-1阴性表达患者和ERCC mRNA阳性患者长。 | 王先国 陈景华 李宇 张山燕 周远 | 2015 | 中国老年学杂志2015，35，3： | 1 |
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