目的探讨重组人白细胞介素24(rhIL-24)联合顺铂(DDP)诱导人肺腺癌A549细胞凋亡相关基因的变化。方法用160 ng/m L rhIL-24、3μg/m L DDP及160 ng/m L rhIL-24联合3μg/m L DDP处理A549细胞,应用Genome LabTMGe XP多基因遗传表达分析系...目的探讨重组人白细胞介素24(rhIL-24)联合顺铂(DDP)诱导人肺腺癌A549细胞凋亡相关基因的变化。方法用160 ng/m L rhIL-24、3μg/m L DDP及160 ng/m L rhIL-24联合3μg/m L DDP处理A549细胞,应用Genome LabTMGe XP多基因遗传表达分析系统检测凋亡相关基因Bax、Bcl-2、存活蛋白(survivin)、caspase-3、视网膜母细胞瘤基因(Rb)、p53的mRNA表达水平。结果 rhIL-24蛋白处理的A549细胞上调Bax、caspase-3、Rb的mRNA水平,下调Bcl-2、survivin的mRNA水平,但p53mRNA变化无规律,rhIL-24联合DDP组对A549细胞上述基因表达的影响更明显。结论 rhIL-24蛋白可通过上调Bax、抑癌基因Rb,下调Bcl-2、survivin,激活caspase-3而诱导人肺腺癌A549细胞凋亡。展开更多
Genome Lab Ge XP(Gene e Xpression Profiler)是由美国Beckman Coulter公司推出一个多基因分析平台。该系统采用荧光标记的通用引物和末端连接有通用引物序列的特异性嵌合引物相结合引发多重体系扩增,解决了由于PCR选择和PCR漂移引起...Genome Lab Ge XP(Gene e Xpression Profiler)是由美国Beckman Coulter公司推出一个多基因分析平台。该系统采用荧光标记的通用引物和末端连接有通用引物序列的特异性嵌合引物相结合引发多重体系扩增,解决了由于PCR选择和PCR漂移引起的传统多重PCR技术的扩增偏爱性,并与毛细管电泳相结合,解决了琼脂糖凝胶电泳因分辨率不高造成的假阴性和假阳性。本文主要介绍了Ge XP多重基因表达分析系统的技术背景、基本原理、扩增优势,重点阐述了其在各方面的应用现状及发展趋势。展开更多
AIM: To elucidate the role of overexpressed polo-like kinasel (PLK1)in hepatocellular carcinoma (HCC). METHODS: We prospectively collected clinicopathological, immunohistochemical and semi-quantitative reverse t...AIM: To elucidate the role of overexpressed polo-like kinasel (PLK1)in hepatocellular carcinoma (HCC). METHODS: We prospectively collected clinicopathological, immunohistochemical and semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR) data from 135 HCC patients undergoing successful hepatectomy. The correlations between PLK1 mRNA expression and clinicopathologic variables were analyzed by Mann-Whitney U test. Prognostic factors were identified by univariate and multivariate analyses. RESULTS: Immunohistochemical results showed overexpression of PLK1 was mainly found in tumor tissues compared with tumor-free tissue. A similar mRNA result was obtained by semi-quantitative RT-PCR. A total of 111 samples were positive for PLK1 mRNA expression. The positive expression was correlated with venous invasion, tumor nodules and Edmondson grade. Furthermore, 1, 3, 5-year survival rates in the positive expression group were significantly lower than the negative control group. Multivariate analysis showed that positive PLK1 expression was an independent risk factor for HCC. CONCLUSION: PLK1 could be a potential biomarker for diagnosis and therapy for HCC.展开更多
文摘目的探讨重组人白细胞介素24(rhIL-24)联合顺铂(DDP)诱导人肺腺癌A549细胞凋亡相关基因的变化。方法用160 ng/m L rhIL-24、3μg/m L DDP及160 ng/m L rhIL-24联合3μg/m L DDP处理A549细胞,应用Genome LabTMGe XP多基因遗传表达分析系统检测凋亡相关基因Bax、Bcl-2、存活蛋白(survivin)、caspase-3、视网膜母细胞瘤基因(Rb)、p53的mRNA表达水平。结果 rhIL-24蛋白处理的A549细胞上调Bax、caspase-3、Rb的mRNA水平,下调Bcl-2、survivin的mRNA水平,但p53mRNA变化无规律,rhIL-24联合DDP组对A549细胞上述基因表达的影响更明显。结论 rhIL-24蛋白可通过上调Bax、抑癌基因Rb,下调Bcl-2、survivin,激活caspase-3而诱导人肺腺癌A549细胞凋亡。
文摘Genome Lab Ge XP(Gene e Xpression Profiler)是由美国Beckman Coulter公司推出一个多基因分析平台。该系统采用荧光标记的通用引物和末端连接有通用引物序列的特异性嵌合引物相结合引发多重体系扩增,解决了由于PCR选择和PCR漂移引起的传统多重PCR技术的扩增偏爱性,并与毛细管电泳相结合,解决了琼脂糖凝胶电泳因分辨率不高造成的假阴性和假阳性。本文主要介绍了Ge XP多重基因表达分析系统的技术背景、基本原理、扩增优势,重点阐述了其在各方面的应用现状及发展趋势。
文摘AIM: To elucidate the role of overexpressed polo-like kinasel (PLK1)in hepatocellular carcinoma (HCC). METHODS: We prospectively collected clinicopathological, immunohistochemical and semi-quantitative reverse transcription-polymerase chain reaction (RT-PCR) data from 135 HCC patients undergoing successful hepatectomy. The correlations between PLK1 mRNA expression and clinicopathologic variables were analyzed by Mann-Whitney U test. Prognostic factors were identified by univariate and multivariate analyses. RESULTS: Immunohistochemical results showed overexpression of PLK1 was mainly found in tumor tissues compared with tumor-free tissue. A similar mRNA result was obtained by semi-quantitative RT-PCR. A total of 111 samples were positive for PLK1 mRNA expression. The positive expression was correlated with venous invasion, tumor nodules and Edmondson grade. Furthermore, 1, 3, 5-year survival rates in the positive expression group were significantly lower than the negative control group. Multivariate analysis showed that positive PLK1 expression was an independent risk factor for HCC. CONCLUSION: PLK1 could be a potential biomarker for diagnosis and therapy for HCC.