1文献来源
Tiseo M, Bordi P, Bortesi B, et al. ERCC1/ BRCA 1 expression and gene polymorphisms as prognostic and predictive factors in advanced NSCLC treated with or without Cisplatin [J]. Br J Cancer, 2013,108（8） ...1文献来源
Tiseo M, Bordi P, Bortesi B, et al. ERCC1/ BRCA 1 expression and gene polymorphisms as prognostic and predictive factors in advanced NSCLC treated with or without Cisplatin [J]. Br J Cancer, 2013,108（8） ： 1695-1703.展开更多
目的:探讨二甲双胍是否能够逆转卵巢癌细胞对顺铂的耐药性,以及其可能的作用机制。方法:CCK-8法检测二甲双胍作用后卵巢癌细胞顺铂耐药株C13K和CP70细胞对顺铂的耐药性变化,以及转染针对切除修复交叉互补基因1(excision repair cross-co...目的:探讨二甲双胍是否能够逆转卵巢癌细胞对顺铂的耐药性,以及其可能的作用机制。方法:CCK-8法检测二甲双胍作用后卵巢癌细胞顺铂耐药株C13K和CP70细胞对顺铂的耐药性变化,以及转染针对切除修复交叉互补基因1(excision repair cross-complemention 1,ERCC1)的特异性小干扰RNA(small interfering RNA,si RNA)后C13K和CP70细胞耐药性的变化。实时荧光定量PCR法检测不同浓度二甲双胍作用后,C13K和CP70细胞中ERCC1基因表达的变化。蛋白质印迹法检测二甲双胍作用后C13K和CP70细胞中腺苷酸活化蛋白激酶(AMP-activated protein kinase,AMPK)信号通路的激活和p38丝裂原活化蛋白激酶(p38 mitogen-activated protein kinase,p38MAPK)信号通路的抑制情况,以及联合或不联合AMPK信号通路阻断剂Compound C作用后ERCC1蛋白的表达情况。同时,蛋白质印迹法检测p38MAPK信号通路抑制剂SB203580作用后耐药细胞中ERCC1蛋白表达的变化,以及二甲双胍作用联合p38MAPK si RNA转染前后耐药细胞中ERCC1蛋白的表达变化。结果:二甲双胍能够逆转C13K和CP70细胞对顺铂的耐药性(P<0.05)。二甲双胍作用能够降低C13K和CP70细胞中ERCC1 m RNA和蛋白的表达水平(P<0.05),并激活AMPK信号通路(P<0.05);而联合应用AMPK信号通路阻断剂Compound C可以阻断二甲双胍的这种作用(即ERCC1蛋白表达水平升高)(P<0.01)。p38MAPK信号通路抑制剂SB203580作用后,C13K和CP70细胞中ERCC1蛋白表达水平降低(P<0.05);而二甲双胍作用可降低p38MAPK的磷酸化水平(P<0.01),抑制p38MAPK信号通路。二甲双胍作用转染了p38MAPK si RNA的C13K和CP70细胞后,ERCC1蛋白的表达水平无明显变化(P>0.05)。结论:二甲双胍可能逆转卵巢癌顺铂耐药株对顺铂的耐药性,并且这一作用可能是通过抑制p38MAPK信号通路和降低细胞中ERCC1的表达而实现的。展开更多
Background Platinum-based regimens are used as standard first-line chemotherapy in non-small cell lung cancer （NSCLC） patients. To study if pharmacogenetic approach may allow a tailored selection of platinum chemoth...Background Platinum-based regimens are used as standard first-line chemotherapy in non-small cell lung cancer （NSCLC） patients. To study if pharmacogenetic approach may allow a tailored selection of platinum chemotherapy for advanced NSCLC, we performed a meta-analysis to compare chemosensitivity to platinum with differe4nt ERCC1 Cl18T/ MDR1 C3435T single-nucleotide polymorphism （SNP）. Methods Relevant studies were identified by searching the PubMed, Embase, Cochrane, OVID, Springer, EBSCO and CNKI databases. Inclusion criteria were patients with advanced NSCLC who received platinum-based chemotherapy, an evaluated polymorphism of ERCC/MDIR1 and overall response rate. We excluded duplicate publications, letters and review articles. The RevMan 4.2 and STATA 11 package were used to do comprehensive quantitative assessment. Results A total of 11 studies were included in this meta-analysis. For studies evaluating ERCC1 Cl18T, test for heterogeneity was done （X2=13.41, P=0.1）, and the odds ratio （OR） for the wild-type C/C genotype versus the heterozygous C/T and T/T genotypes was 1.50 （95% CI 1.09-2.06, P=0.01）. In four studies evaluating MDR1 polymorphism, test for heterogeneity was also done （X2=3.22, P=0.36）, and the OR for the wild-type C/C genotype versus the heterozygous C/T and T/T genotypes was 2.30 （95% CI 1.44-3.68, P=0.0005）. Conclusions The results indicated that platinum-based chemotherapy sensitivity was significantly associated with polymorphism of ERCC1 Cl18T and MDR1 C3435T SNP. In further perspective studies, the ERCC1/MDR1 SNPs might serve as simple and less invasive biomarkers for personalized chemotherapy with platinum-based anticancer drugs.展开更多
背景与目的:EGFR-TKI治疗NSCLC失败后,化疗仍可取得一定的治疗效果,是可选择的治疗方案之一。核苷酸还原酶(ribonucleotide reductase,RR)、胸苷酸合成酶(thymidylate synthase,TS)、核苷酸切除修复交叉互补基因1(excision repair cross...背景与目的:EGFR-TKI治疗NSCLC失败后,化疗仍可取得一定的治疗效果,是可选择的治疗方案之一。核苷酸还原酶(ribonucleotide reductase,RR)、胸苷酸合成酶(thymidylate synthase,TS)、核苷酸切除修复交叉互补基因1(excision repair cross complementstion group 1,ERCC1)、3型β微管蛋白(β-tubulin-Ⅲ,TUBB3)分别与吉西他滨、培美曲塞、铂类药物及微管类药物的化疗药物敏感性存在相关性,可以通过这些分子标志物的表达水平来预测化疗药物的敏感性。RRMI、TS、ERCC1和TUBB3高表达患者化疗药物的敏感性降低,低表达患者化疗药物敏感性增高。本研究拟探讨EGFR-T790M突变所致吉非替尼耐药肺腺癌细胞对顺铂、吉西他滨、长春瑞滨、紫杉醇、多西他赛和培美曲塞化疗药物敏感性的变化。方法:通过MTT法检测PC9及PC9/GR细胞对顺铂、吉西他滨、长春瑞滨、紫杉醇、多西他赛和培美曲塞的IC50,探讨其对上述药物的化疗敏感性。采用液相芯片法,检测PC9及PC9/GR细胞ERCC1 m RNA、RRM1 m RNA、TUBB3 m RNA和TS m RNA的表达水平。通过蛋白质印迹法(Western blot)检测PC9及PC9/GR细胞ERCC1、RRM1、TUBB3和TS蛋白的表达水平。结果:与PC9细胞株相比较,PC9/GR细胞株对吉非替尼、顺铂、吉西他滨和培美曲塞的IC50明显增高(P<0.05);对长春瑞滨、紫杉醇和多西他赛的IC50明显降低(P<0.05)。PC9/GR细胞对吉非替尼、顺铂、吉西他滨、长春瑞滨、紫杉醇、多西他赛和培美曲塞的耐药指数分别为70、1.56、1.61、0.34、0.39、0.14和1.71。与PC9细胞株m RNA的表达量相比较,PC9/GR细胞株ERCC1 m RNA、RRM1 m RNA和TS m RNA的表达量明显增高(P<0.05),TUBB3的m RNA的表达量明显降低,差异均有统计学意义(P<0.05)。与PC9细胞株蛋白的表达量相比较,PC9/GR细胞株ERCC1、RRM1和TS的蛋白表达量明显增高,TUBB3蛋白的表达量明显降低,差异均有统计学意义(P<0.05)。结论:肺腺癌细胞株发生EGFR-T展开更多
文摘目的:探讨DNA修复基因家族成员ERCC1、RRM1和BRCA1在非小细胞肺癌(NSCLC)中的表达及预后意义。方法:应用实时荧光定量PCR技术对32例肺癌及16例癌旁组织中ERCC1、RRM1和BRCA1基因的mRNA进行定量检测。用非参数检验、相关分析、Kap lan-M e ier生存曲线和COX多因素回归分析进行统计分析。结果:NSCLC中ERCC1、RRM1和BRCA1在癌组织内表达量显著高于癌旁组织,且在癌内表达具有正相关性;RRM1在肺鳞癌中高于腺癌,但在不同分期中表达无差异;ERCC1和BRCA1在不同病理类型和分期中表达均无差异;RRM1和BRCA1高表达组的生存期明显长于低表达组;COX多因素回归分析示RRM1表达是影响本组患者预后的独立因素。结论:NSCLC中,ERCC1、RRM1和BRCA1在肺癌组织中的表达显著高于癌旁组织,RRM1和BRCA1高表达组的生存期长于低表达组。RRM1和BRCA1可作为判断预后的一种指标。
文摘1文献来源
Tiseo M, Bordi P, Bortesi B, et al. ERCC1/ BRCA 1 expression and gene polymorphisms as prognostic and predictive factors in advanced NSCLC treated with or without Cisplatin [J]. Br J Cancer, 2013,108（8） ： 1695-1703.
文摘目的:探讨二甲双胍是否能够逆转卵巢癌细胞对顺铂的耐药性,以及其可能的作用机制。方法:CCK-8法检测二甲双胍作用后卵巢癌细胞顺铂耐药株C13K和CP70细胞对顺铂的耐药性变化,以及转染针对切除修复交叉互补基因1(excision repair cross-complemention 1,ERCC1)的特异性小干扰RNA(small interfering RNA,si RNA)后C13K和CP70细胞耐药性的变化。实时荧光定量PCR法检测不同浓度二甲双胍作用后,C13K和CP70细胞中ERCC1基因表达的变化。蛋白质印迹法检测二甲双胍作用后C13K和CP70细胞中腺苷酸活化蛋白激酶(AMP-activated protein kinase,AMPK)信号通路的激活和p38丝裂原活化蛋白激酶(p38 mitogen-activated protein kinase,p38MAPK)信号通路的抑制情况,以及联合或不联合AMPK信号通路阻断剂Compound C作用后ERCC1蛋白的表达情况。同时,蛋白质印迹法检测p38MAPK信号通路抑制剂SB203580作用后耐药细胞中ERCC1蛋白表达的变化,以及二甲双胍作用联合p38MAPK si RNA转染前后耐药细胞中ERCC1蛋白的表达变化。结果:二甲双胍能够逆转C13K和CP70细胞对顺铂的耐药性(P<0.05)。二甲双胍作用能够降低C13K和CP70细胞中ERCC1 m RNA和蛋白的表达水平(P<0.05),并激活AMPK信号通路(P<0.05);而联合应用AMPK信号通路阻断剂Compound C可以阻断二甲双胍的这种作用(即ERCC1蛋白表达水平升高)(P<0.01)。p38MAPK信号通路抑制剂SB203580作用后,C13K和CP70细胞中ERCC1蛋白表达水平降低(P<0.05);而二甲双胍作用可降低p38MAPK的磷酸化水平(P<0.01),抑制p38MAPK信号通路。二甲双胍作用转染了p38MAPK si RNA的C13K和CP70细胞后,ERCC1蛋白的表达水平无明显变化(P>0.05)。结论:二甲双胍可能逆转卵巢癌顺铂耐药株对顺铂的耐药性,并且这一作用可能是通过抑制p38MAPK信号通路和降低细胞中ERCC1的表达而实现的。
基金This study was supported by a grant ＂from the National Natural Science Foundation of China （No. C 171003） and Doctoral Fund ot Ministry of Education of China.
文摘Background Platinum-based regimens are used as standard first-line chemotherapy in non-small cell lung cancer （NSCLC） patients. To study if pharmacogenetic approach may allow a tailored selection of platinum chemotherapy for advanced NSCLC, we performed a meta-analysis to compare chemosensitivity to platinum with differe4nt ERCC1 Cl18T/ MDR1 C3435T single-nucleotide polymorphism （SNP）. Methods Relevant studies were identified by searching the PubMed, Embase, Cochrane, OVID, Springer, EBSCO and CNKI databases. Inclusion criteria were patients with advanced NSCLC who received platinum-based chemotherapy, an evaluated polymorphism of ERCC/MDIR1 and overall response rate. We excluded duplicate publications, letters and review articles. The RevMan 4.2 and STATA 11 package were used to do comprehensive quantitative assessment. Results A total of 11 studies were included in this meta-analysis. For studies evaluating ERCC1 Cl18T, test for heterogeneity was done （X2=13.41, P=0.1）, and the odds ratio （OR） for the wild-type C/C genotype versus the heterozygous C/T and T/T genotypes was 1.50 （95% CI 1.09-2.06, P=0.01）. In four studies evaluating MDR1 polymorphism, test for heterogeneity was also done （X2=3.22, P=0.36）, and the OR for the wild-type C/C genotype versus the heterozygous C/T and T/T genotypes was 2.30 （95% CI 1.44-3.68, P=0.0005）. Conclusions The results indicated that platinum-based chemotherapy sensitivity was significantly associated with polymorphism of ERCC1 Cl18T and MDR1 C3435T SNP. In further perspective studies, the ERCC1/MDR1 SNPs might serve as simple and less invasive biomarkers for personalized chemotherapy with platinum-based anticancer drugs.
文摘背景与目的:EGFR-TKI治疗NSCLC失败后,化疗仍可取得一定的治疗效果,是可选择的治疗方案之一。核苷酸还原酶(ribonucleotide reductase,RR)、胸苷酸合成酶(thymidylate synthase,TS)、核苷酸切除修复交叉互补基因1(excision repair cross complementstion group 1,ERCC1)、3型β微管蛋白(β-tubulin-Ⅲ,TUBB3)分别与吉西他滨、培美曲塞、铂类药物及微管类药物的化疗药物敏感性存在相关性,可以通过这些分子标志物的表达水平来预测化疗药物的敏感性。RRMI、TS、ERCC1和TUBB3高表达患者化疗药物的敏感性降低,低表达患者化疗药物敏感性增高。本研究拟探讨EGFR-T790M突变所致吉非替尼耐药肺腺癌细胞对顺铂、吉西他滨、长春瑞滨、紫杉醇、多西他赛和培美曲塞化疗药物敏感性的变化。方法:通过MTT法检测PC9及PC9/GR细胞对顺铂、吉西他滨、长春瑞滨、紫杉醇、多西他赛和培美曲塞的IC50,探讨其对上述药物的化疗敏感性。采用液相芯片法,检测PC9及PC9/GR细胞ERCC1 m RNA、RRM1 m RNA、TUBB3 m RNA和TS m RNA的表达水平。通过蛋白质印迹法(Western blot)检测PC9及PC9/GR细胞ERCC1、RRM1、TUBB3和TS蛋白的表达水平。结果:与PC9细胞株相比较,PC9/GR细胞株对吉非替尼、顺铂、吉西他滨和培美曲塞的IC50明显增高(P<0.05);对长春瑞滨、紫杉醇和多西他赛的IC50明显降低(P<0.05)。PC9/GR细胞对吉非替尼、顺铂、吉西他滨、长春瑞滨、紫杉醇、多西他赛和培美曲塞的耐药指数分别为70、1.56、1.61、0.34、0.39、0.14和1.71。与PC9细胞株m RNA的表达量相比较,PC9/GR细胞株ERCC1 m RNA、RRM1 m RNA和TS m RNA的表达量明显增高(P<0.05),TUBB3的m RNA的表达量明显降低,差异均有统计学意义(P<0.05)。与PC9细胞株蛋白的表达量相比较,PC9/GR细胞株ERCC1、RRM1和TS的蛋白表达量明显增高,TUBB3蛋白的表达量明显降低,差异均有统计学意义(P<0.05)。结论:肺腺癌细胞株发生EGFR-T
