目的对胆道系统肿瘤,包括肝内胆管癌(ICC)、肝外胆管癌(ECC)及胆囊癌(GBC)的突变基因进行分析,找出胆道系统肿瘤中热点突变基因。方法检索Web of Knowledge、Scopus、PubMed数据库,根据纳入及排除标准纳入文献。最终纳入14篇符合标准的...目的对胆道系统肿瘤,包括肝内胆管癌(ICC)、肝外胆管癌(ECC)及胆囊癌(GBC)的突变基因进行分析,找出胆道系统肿瘤中热点突变基因。方法检索Web of Knowledge、Scopus、PubMed数据库,根据纳入及排除标准纳入文献。最终纳入14篇符合标准的文献,对每一篇文章中的突变基因情况进行统计,运用RRA方法进行分析,寻找ICC、ECC、GBC的热点突变基因。结果找到ICC的热点突变基因为IDH1(突变频率16.9%)、KRAS(突变频率15.7%);ECC热点突变基因为KRAS(突变频率47.0%)、TP53(突变频率29.4%);GBC热点突变基因为TP53(突变频率36.8%)、KRAS(突变频率18.4%)。同时,发现IDH1基因突变为ICC中特有的基因突变类型。结论胆道系统肿瘤中,IDH1、KRAS、TP53为其热点突变基因。其中,KRAS为胆道系统肿瘤共有热点突变基因,IDH1为ICC中特有的热点突变基因。展开更多
AIM:To characterize the differentially expressed gene profiles in livers from biliary atresia (BA) patients including,ascertain genes,functional categories and pathways that play a central role in the pathogenesis of ...AIM:To characterize the differentially expressed gene profiles in livers from biliary atresia (BA) patients including,ascertain genes,functional categories and pathways that play a central role in the pathogenesis of BA,and identify the novel prognostic markers for BA.METHODS:Liver tissue samples from control patients,neonatal cholestasis patients,and BA patients at the age of < 60 d,60-90 d,and > 90 d were pooled for DNA microarray analysis.Bioinformatics analysis was performed using,series test cluster of gene ontology,and Pathway-Finder software.Reverse-transcription polymerase chain reaction was performed to confirm changes in selected genes.Relation between RRAS gene expression and prognosis of 40 BA patients was analyzed in a 2-year follow-up study.RESULTS:The 4 identified significant gene expression profiles could confidently separate BA liver tissue from normal and other diseased liver tissues.The included genes were mainly involved in inflammation response and reconstruction of cellular matrix.The significant pathways associated with BA were primarily involved in autoimmune response,activation of T lymphocytes and its related cytokines.The RRAS,POMC,SLC26A6 and STX3 genes were important regulatory modules in pathogenesis of BA.The expression of RRAS was negatively correlated with the elimination rate of jaundice and positively correlated with the occurrence rate of cholangitis.CONCLUSION:Autoimmune response mediated by T lymphocytes may play a vital role in the pathogenesis of BA.The RRAS gene is an important regulatory module in the pathogenesis of BA,which may serve as a novel prognostic marker for BA.展开更多
文章提出"最后所有可能步进的RRA算法(Final All Possible Step RRA,FAPS RRA)".该算法改变了RRA算法的数据收集方式,目的是在不失算法精度的前提下,减少模型的运行次数,有效地提高算法的运行速度.仿真实验结果表明:在相同精...文章提出"最后所有可能步进的RRA算法(Final All Possible Step RRA,FAPS RRA)".该算法改变了RRA算法的数据收集方式,目的是在不失算法精度的前提下,减少模型的运行次数,有效地提高算法的运行速度.仿真实验结果表明:在相同精度的要求下,FAPS RRA算法比RRA算法的模拟运行速率有显著提高.展开更多
文摘目的对胆道系统肿瘤,包括肝内胆管癌(ICC)、肝外胆管癌(ECC)及胆囊癌(GBC)的突变基因进行分析,找出胆道系统肿瘤中热点突变基因。方法检索Web of Knowledge、Scopus、PubMed数据库,根据纳入及排除标准纳入文献。最终纳入14篇符合标准的文献,对每一篇文章中的突变基因情况进行统计,运用RRA方法进行分析,寻找ICC、ECC、GBC的热点突变基因。结果找到ICC的热点突变基因为IDH1(突变频率16.9%)、KRAS(突变频率15.7%);ECC热点突变基因为KRAS(突变频率47.0%)、TP53(突变频率29.4%);GBC热点突变基因为TP53(突变频率36.8%)、KRAS(突变频率18.4%)。同时,发现IDH1基因突变为ICC中特有的基因突变类型。结论胆道系统肿瘤中,IDH1、KRAS、TP53为其热点突变基因。其中,KRAS为胆道系统肿瘤共有热点突变基因,IDH1为ICC中特有的热点突变基因。
基金Supported by National Natural Science Foundation of China,No.30973139
文摘AIM:To characterize the differentially expressed gene profiles in livers from biliary atresia (BA) patients including,ascertain genes,functional categories and pathways that play a central role in the pathogenesis of BA,and identify the novel prognostic markers for BA.METHODS:Liver tissue samples from control patients,neonatal cholestasis patients,and BA patients at the age of < 60 d,60-90 d,and > 90 d were pooled for DNA microarray analysis.Bioinformatics analysis was performed using,series test cluster of gene ontology,and Pathway-Finder software.Reverse-transcription polymerase chain reaction was performed to confirm changes in selected genes.Relation between RRAS gene expression and prognosis of 40 BA patients was analyzed in a 2-year follow-up study.RESULTS:The 4 identified significant gene expression profiles could confidently separate BA liver tissue from normal and other diseased liver tissues.The included genes were mainly involved in inflammation response and reconstruction of cellular matrix.The significant pathways associated with BA were primarily involved in autoimmune response,activation of T lymphocytes and its related cytokines.The RRAS,POMC,SLC26A6 and STX3 genes were important regulatory modules in pathogenesis of BA.The expression of RRAS was negatively correlated with the elimination rate of jaundice and positively correlated with the occurrence rate of cholangitis.CONCLUSION:Autoimmune response mediated by T lymphocytes may play a vital role in the pathogenesis of BA.The RRAS gene is an important regulatory module in the pathogenesis of BA,which may serve as a novel prognostic marker for BA.
文摘文章提出"最后所有可能步进的RRA算法(Final All Possible Step RRA,FAPS RRA)".该算法改变了RRA算法的数据收集方式,目的是在不失算法精度的前提下,减少模型的运行次数,有效地提高算法的运行速度.仿真实验结果表明:在相同精度的要求下,FAPS RRA算法比RRA算法的模拟运行速率有显著提高.
