目的:探索EIF4A3的表达与高级别浆液性卵巢癌患者临床病理特征和预后的关系,明确其在高级别浆液性卵巢癌发生发展过程中的作用。方法:采用免疫组织化学方法检测EIF4A3在高级别浆液性卵巢癌组织、交界性卵巢肿瘤组织以及正常输卵管组织...目的:探索EIF4A3的表达与高级别浆液性卵巢癌患者临床病理特征和预后的关系,明确其在高级别浆液性卵巢癌发生发展过程中的作用。方法:采用免疫组织化学方法检测EIF4A3在高级别浆液性卵巢癌组织、交界性卵巢肿瘤组织以及正常输卵管组织中的表达情况,分析其表达对高级别浆液性卵巢癌临床病理特征及预后的影响。通过TIMER数据库分析EIF4A3在泛癌中的表达水平。通过Sangerbox工具分析EIF4A3表达在泛癌中的预后情况。通过cBioportal网站分析EIF4A3在卵巢癌组织中基因突变的情况。通过GeneMANIA网站构建与EIF4A3共表达基因网络图,其中与EIF4A3最有关系的5个基因分别为ETF1、CENPX、DDX21、DDX31和JMJD6。结果:EIF4A3在高级别浆液性卵巢癌组织中的表达高于交界性卵巢肿瘤和正常输卵管组织(P P P < 0.05)。结论:EIF4A3在高级别浆液性卵巢癌中高表达,与临床病理特征及不良预后有关,EIF4A3可能参与卵巢癌的发生和发展。展开更多
OBJECTIVE To investigate the role of e IF3a in the regulation of DNA repair pathways in cancer chemotherapeutic response.METHODS Immunohistochemistry was used to determine the expression of e IF3a in lung and breast c...OBJECTIVE To investigate the role of e IF3a in the regulation of DNA repair pathways in cancer chemotherapeutic response.METHODS Immunohistochemistry was used to determine the expression of e IF3a in lung and breast cancer tissues followed by association analysis of e IF3a expression with patient′s response to chemotherapy.Ectopic overexpression and RNA interference knockdown of e IF3a were carried out in NIH3T3and H1299 cell lines,respectively,to determine the effect of altered e IF3a expression on cellular response to chemotherapeutic drugs by using MTT assay.The DNA repair capacity of these cells was evaluated by using host-cell reactivation,NHEJ and HR assay.Real-time reverse transcriptase PCR and Western Blot analyses were carried out to determine the effect of e IF3a on the DNA repair genes by using cells with altered e IF3a expression.RESULTS e IF3a expression associates with response of lung and breast cancer patients to platinum and anthracycline.e IF3a knockdown or overexpression,respectively,increased and decreased the cellular resistance to cisplatin and anthracycline anticancer drugs,DNA repair activity,and expression of NER and NHEJ DNA repair proteins.CONCLUSION e IF3a plays an important role in regulating the expression of NER and NHEJ DNA repair proteins which,in turn,contributes to cellular response to DNA-damaging anticancer drugs and patients′response to platinum and anthracycline chemotherapy.展开更多
文摘目的:探索EIF4A3的表达与高级别浆液性卵巢癌患者临床病理特征和预后的关系,明确其在高级别浆液性卵巢癌发生发展过程中的作用。方法:采用免疫组织化学方法检测EIF4A3在高级别浆液性卵巢癌组织、交界性卵巢肿瘤组织以及正常输卵管组织中的表达情况,分析其表达对高级别浆液性卵巢癌临床病理特征及预后的影响。通过TIMER数据库分析EIF4A3在泛癌中的表达水平。通过Sangerbox工具分析EIF4A3表达在泛癌中的预后情况。通过cBioportal网站分析EIF4A3在卵巢癌组织中基因突变的情况。通过GeneMANIA网站构建与EIF4A3共表达基因网络图,其中与EIF4A3最有关系的5个基因分别为ETF1、CENPX、DDX21、DDX31和JMJD6。结果:EIF4A3在高级别浆液性卵巢癌组织中的表达高于交界性卵巢肿瘤和正常输卵管组织(P P P < 0.05)。结论:EIF4A3在高级别浆液性卵巢癌中高表达,与临床病理特征及不良预后有关,EIF4A3可能参与卵巢癌的发生和发展。
基金supported by the Program for Changjiang Scholars and Innovative Research Team in University (IRT0946)Nature National Foundation of China (30873089)the Nature Science Foundation of Hunan Province, P. R. China(08JJ3058)
基金The project supported by National High-tech R&D Program of China 863 Program Grant(2009AA022704)National Natural Science Foundation of China(81573463,81173129,81202595 and NIH Grant CA 94961)
文摘OBJECTIVE To investigate the role of e IF3a in the regulation of DNA repair pathways in cancer chemotherapeutic response.METHODS Immunohistochemistry was used to determine the expression of e IF3a in lung and breast cancer tissues followed by association analysis of e IF3a expression with patient′s response to chemotherapy.Ectopic overexpression and RNA interference knockdown of e IF3a were carried out in NIH3T3and H1299 cell lines,respectively,to determine the effect of altered e IF3a expression on cellular response to chemotherapeutic drugs by using MTT assay.The DNA repair capacity of these cells was evaluated by using host-cell reactivation,NHEJ and HR assay.Real-time reverse transcriptase PCR and Western Blot analyses were carried out to determine the effect of e IF3a on the DNA repair genes by using cells with altered e IF3a expression.RESULTS e IF3a expression associates with response of lung and breast cancer patients to platinum and anthracycline.e IF3a knockdown or overexpression,respectively,increased and decreased the cellular resistance to cisplatin and anthracycline anticancer drugs,DNA repair activity,and expression of NER and NHEJ DNA repair proteins.CONCLUSION e IF3a plays an important role in regulating the expression of NER and NHEJ DNA repair proteins which,in turn,contributes to cellular response to DNA-damaging anticancer drugs and patients′response to platinum and anthracycline chemotherapy.
