目的联合检测EGFR野生型非小细胞肺癌（NSCLC）患者的ERCC1、RRM1、TYMS和TUBB3的mRNA表达水平差异,以探究4种基因的表达水平对化疗效果及预后的影响。方法将353例NSCLC患者的标本通过xTAG-液相芯片法筛选出EGFR野生型患者,采用实时荧...目的联合检测EGFR野生型非小细胞肺癌（NSCLC）患者的ERCC1、RRM1、TYMS和TUBB3的mRNA表达水平差异,以探究4种基因的表达水平对化疗效果及预后的影响。方法将353例NSCLC患者的标本通过xTAG-液相芯片法筛选出EGFR野生型患者,采用实时荧光定量PCR检测标本中4种基因的mRNA表达水平。EGFR野生型患者中4种基因均高表达的为高表达组,否则为低表达组,比较两组患者接受化疗后的中位无进展生存期及中位总生存期。结果遴选出EGFR野生型NSCLC患者227例,除吸烟与不吸烟者外,其他不同特征型患者之间4种基因mRNA表达水平之间差异无统计学意义（P〉0.05）。野生型高表达组有27例,野生型低表达组有53例,两组患者客观缓解率（ORR）（14.8%vs 41.5%,P〈0.05）、疾病控制率（DCR）（40.7%vs 81.1%,P〈0.05）、中位无进展生存期（月）（3.3 vs 4.9,P=0.001）与中位总生存期（月）（7.1 vs 8.1,P=0.048）间差异均有统计学意义。Cox多因素分析显示,4种基因高表达为EGFR野生型NSCLC患者化疗预后的独立危险因素（HR=1.92;95%CI：1.10~3.42）。结论 EGFR野生型NSCLC患者肿瘤组织的ERCC1、TYMS、TUBB3和RRM1 mRNA为高表达水平时,预示其对化疗药物具有耐药性。联合检测4种基因的表达有利于化疗方案的选择。展开更多
Objective: To evaluate the role of class III β-tubulin (TUBB3), thymidylate synthase (TS), thymidine phosphorylase (TP), and excision repair cross-complementing group 1 (ERCC1) in clinical outcome of advanced gastric...Objective: To evaluate the role of class III β-tubulin (TUBB3), thymidylate synthase (TS), thymidine phosphorylase (TP), and excision repair cross-complementing group 1 (ERCC1) in clinical outcome of advanced gastric cancer patients receiving capecitabine plus paclitaxel or cisplatin. Methods: The clinical data and tumor specimens from 57 advanced gastric cancer patients receiving first-line capecitabine plus paclitaxel (cohort 1, n=36) and capecitabine plus cisplatin (cohort 2, n=21) were retrospectively collected, and TUBB3, TS, TP, and ERCC1 expressions were detected by real-time quantitative PCR. The associations between expressions of biomarkers and response or survival were analyzed statistically. Results: The median age of 57 patients was 57 years (range: 27–75 years) with 38 males and 19 females. Of all patients, the response rates of patients with high TP, low TP and high TS, low TS expressions were 57.1%, 27.6% (P=0.024), and 55.2%, 28.6% (P=0.042), respectively. Among cohort 1, the response rates and median overall survivals of patients with low and high TUBB3 expressions were 61.1% vs. 33.3% (P=0.095) and 13.8 months vs. 6.6 months (P=0.019), respectively; the response rate (87.5%) of patients with low TUBB3 and high TP expressions was higher than that (14.3%) of patients with high TUBB3 and low TP expressions (P=0.01). Among cohort 2, the response rates of patients with low ERCC1 and high ERCC1 expressions were 45.5% and 20.0% respectively (P=0.361). Conclusion: TUBB3, TS and TP expressions could predict the response of advanced gastric cancer patients receiving capecitabine-based and paclitaxel-based chemotherapy. These results will be further confirmed in future large samples.展开更多
Background Personalized medicine becomes essential in lung cancer treatment, however lung-cancer-related gene expression profiles in Chinese patients remain unknown. In this study, the correlation of gene expression p...Background Personalized medicine becomes essential in lung cancer treatment, however lung-cancer-related gene expression profiles in Chinese patients remain unknown. In this study, the correlation of gene expression profiles and clinical characteristics in non-small-cell lung cancer （NSCLC） was investigated. Methods Seventy-six Chinese patients with NSCLC were enrolled in the study to investigate mRNA expression profiles of excision repair cross complement group 1 （ERCC1）, thymidylate synthetase （TYMS）, ribonucleotide reductase （RRM1）, class Ill 13-tubulin （TUBB3）, and epidermal growth factor receptor （EGFR） genes and their correlation with patient clinical characteristics. A novel liquidchip technology was used to detect mRNA expression levels in formalin fixed paraffin embedded tumor pathology samples. The relationships between gene expression and clinical characteristics were assessed using the Mann-Whitney test. Results ERCC1 mRNA levels were higher in tumors from patients with metastatic disease than patients with non- metastatic disease （P=-0.021）, and higher in adenocarcinomas than squamous cell carcinomas （P=0.006）. Increased TUBB3 mRNA expression levels were found in patients with performance status （PS） 1 in comparison with PS 0 （P=0.049）, with poorly differentiated tumors in comparison with tumors that were moderately and well differentiated （P 〈0.000 1）, and with advanced stage in comparison with early stage disease （P 〈0.000 1）. Conclusions ERCC1 mRNA levels were higher in metastatic adenocarcinoma NSCLC; TUBB3 mRNA levels were significantly higher in poorly differentiated tumors and in advanced stage NSCLC, which indicates the poor prognosis.展开更多
文摘目的联合检测EGFR野生型非小细胞肺癌（NSCLC）患者的ERCC1、RRM1、TYMS和TUBB3的mRNA表达水平差异,以探究4种基因的表达水平对化疗效果及预后的影响。方法将353例NSCLC患者的标本通过xTAG-液相芯片法筛选出EGFR野生型患者,采用实时荧光定量PCR检测标本中4种基因的mRNA表达水平。EGFR野生型患者中4种基因均高表达的为高表达组,否则为低表达组,比较两组患者接受化疗后的中位无进展生存期及中位总生存期。结果遴选出EGFR野生型NSCLC患者227例,除吸烟与不吸烟者外,其他不同特征型患者之间4种基因mRNA表达水平之间差异无统计学意义（P〉0.05）。野生型高表达组有27例,野生型低表达组有53例,两组患者客观缓解率（ORR）（14.8%vs 41.5%,P〈0.05）、疾病控制率（DCR）（40.7%vs 81.1%,P〈0.05）、中位无进展生存期（月）（3.3 vs 4.9,P=0.001）与中位总生存期（月）（7.1 vs 8.1,P=0.048）间差异均有统计学意义。Cox多因素分析显示,4种基因高表达为EGFR野生型NSCLC患者化疗预后的独立危险因素（HR=1.92;95%CI：1.10~3.42）。结论 EGFR野生型NSCLC患者肿瘤组织的ERCC1、TYMS、TUBB3和RRM1 mRNA为高表达水平时,预示其对化疗药物具有耐药性。联合检测4种基因的表达有利于化疗方案的选择。
基金supported by the National "863" High‐Tech Res & Dev Program of China (No. 2006AA02A402)Beijing Municipal Science & Technology Commission Program "Optimization of pharmacotherapy and individual selection in gastric cancer" (No D101100050010023)
文摘Objective: To evaluate the role of class III β-tubulin (TUBB3), thymidylate synthase (TS), thymidine phosphorylase (TP), and excision repair cross-complementing group 1 (ERCC1) in clinical outcome of advanced gastric cancer patients receiving capecitabine plus paclitaxel or cisplatin. Methods: The clinical data and tumor specimens from 57 advanced gastric cancer patients receiving first-line capecitabine plus paclitaxel (cohort 1, n=36) and capecitabine plus cisplatin (cohort 2, n=21) were retrospectively collected, and TUBB3, TS, TP, and ERCC1 expressions were detected by real-time quantitative PCR. The associations between expressions of biomarkers and response or survival were analyzed statistically. Results: The median age of 57 patients was 57 years (range: 27–75 years) with 38 males and 19 females. Of all patients, the response rates of patients with high TP, low TP and high TS, low TS expressions were 57.1%, 27.6% (P=0.024), and 55.2%, 28.6% (P=0.042), respectively. Among cohort 1, the response rates and median overall survivals of patients with low and high TUBB3 expressions were 61.1% vs. 33.3% (P=0.095) and 13.8 months vs. 6.6 months (P=0.019), respectively; the response rate (87.5%) of patients with low TUBB3 and high TP expressions was higher than that (14.3%) of patients with high TUBB3 and low TP expressions (P=0.01). Among cohort 2, the response rates of patients with low ERCC1 and high ERCC1 expressions were 45.5% and 20.0% respectively (P=0.361). Conclusion: TUBB3, TS and TP expressions could predict the response of advanced gastric cancer patients receiving capecitabine-based and paclitaxel-based chemotherapy. These results will be further confirmed in future large samples.
文摘Background Personalized medicine becomes essential in lung cancer treatment, however lung-cancer-related gene expression profiles in Chinese patients remain unknown. In this study, the correlation of gene expression profiles and clinical characteristics in non-small-cell lung cancer （NSCLC） was investigated. Methods Seventy-six Chinese patients with NSCLC were enrolled in the study to investigate mRNA expression profiles of excision repair cross complement group 1 （ERCC1）, thymidylate synthetase （TYMS）, ribonucleotide reductase （RRM1）, class Ill 13-tubulin （TUBB3）, and epidermal growth factor receptor （EGFR） genes and their correlation with patient clinical characteristics. A novel liquidchip technology was used to detect mRNA expression levels in formalin fixed paraffin embedded tumor pathology samples. The relationships between gene expression and clinical characteristics were assessed using the Mann-Whitney test. Results ERCC1 mRNA levels were higher in tumors from patients with metastatic disease than patients with non- metastatic disease （P=-0.021）, and higher in adenocarcinomas than squamous cell carcinomas （P=0.006）. Increased TUBB3 mRNA expression levels were found in patients with performance status （PS） 1 in comparison with PS 0 （P=0.049）, with poorly differentiated tumors in comparison with tumors that were moderately and well differentiated （P 〈0.000 1）, and with advanced stage in comparison with early stage disease （P 〈0.000 1）. Conclusions ERCC1 mRNA levels were higher in metastatic adenocarcinoma NSCLC; TUBB3 mRNA levels were significantly higher in poorly differentiated tumors and in advanced stage NSCLC, which indicates the poor prognosis.
