miR-218在子宫颈癌组织中的表达及预测的靶基因的生物信息学分析  

Expression of miR-218 in cervical cancer tissues and bioinformatics analysis of predicted target genes

作　　者：胡晓霞[1] 曾康康[1] 莫祥兰[1] 刘斐[1] 郑文静[1] 

机构地区：[1]广西壮族自治区人民医院妇科,南宁530021

出　　处：《肿瘤研究与临床》2014年第7期437-441,共5页Cancer Research and Clinic

基　　金：国家自然科学基金（81060219）;广西自然科学基金（桂科回2011GXNSFC018018）

摘　　要：目的 探讨miR-218在子宫颈癌组织中的表达,并对其预测的靶基因进行生物信息学分析,为miR-218在子宫颈癌发生中的作用机制研究提供理论基础.方法 利用miRNA芯片技术检测3份子宫颈癌组织及3份正常子宫颈组织中miRNA表达谱,用实时定量聚合酶链反应（PCR）法在55例子宫颈组织中进行验证.通过生物信息学预测miR-218的靶基因,并对其靶基因进行基因本体（G0）功能富集分析及KEGG信号转导通路富集分析.结果 芯片结果显示子宫颈癌组织中有15个miRNA表达上调（＞2倍）,10个miRNA表达下调（＜0.5倍）,其中miR-218下调最明显.miR-218预测靶基因集合功能富集于生物学调控、蛋白代谢、细胞迁移和黏附、细胞分化等生物学过程,以及蛋白结合、连接酶活性等分子功能上;KEGG通路分析涉及癌通道、黏附连接、胰岛素信号通路、凋亡等信号转导通路及前列腺癌、急性和慢性髓系白血病等疾病通路.结论 miR-218在子宫颈癌组织中呈低表达,miR-218预测靶基因集合显著富集在与肿瘤发生相关的信号通路中.Objective To investigate the expression of miR-218 in cervical cancer tissues and bioinformatically analyze the target genes of miR-218 to provide theoretical basis on further studies of miR-218 functions in cervical cancer.Methods miRNA array was applied to detect miRNA expression profile in cervical cancer tissues,and real-time RT-PCR was used for validation.The bioinformatic analysis of the target genes of miR-218 involved gene ontology and signal transduction pathway enrichment was performed.Results miR-218 expression significantly decreased in cervical cancer tissues compared with that of normal cervical tissues.The functions of predicted target genes of miR-218 were enriched in biological regulation,adhesion and motion,proteometabolism,cellular differentiation,protein binding and other biological processes and molecular functions.According KEGG pathway database,the predicted target genes involved in pathway in cancer,adherent junction,focal adhesion,prostate cancer,chronic myeloid leukemia,melanoma,and other signal transduction pathways.Conclusions miR-218 expression significantly decreases in cervical cancer tissues.Some of the predicted target genes of miR-218 are significantly enriched in tumor related with signaling pathways.

关 键 词：子宫颈肿瘤 miRNA-218 寡核苷酸序列分析 靶基因 生物信息学 

分 类 号：R737.33[医药卫生—肿瘤]