摘要
目的 探讨胆囊癌患者血浆中microRNA的表达及其临床意义.方法 应用高通量microRNA生物芯片筛选7例胆囊癌及癌旁正常组织中差异表达microRNA;应用实时荧光定量PCR方法验证检测40例胆囊癌和20例健康正常人群血浆中相应microRNA的表达.结果 microRNA芯片筛选出11个胆囊癌中差异表达的microRNA,其中5个上调,为miRNA-21、miRNA-370、miRNA-187、miRNA-122、miRNA-202;6个下调,为let-7a、miRNA-200b、miRNA-143、miRNA-31、miRNA-335、miRNA-551.在胆囊癌患者血浆中实时荧光定量PCR检测,let-7a、miRNA-21、miRNA-187、miRNA-143、miRNA-202和miRNA-335的表达结果与芯片检测结果一致,且与健康人群比较表达差异有统计学意义（P＜0.05）.其中miRNA-187、miRNA-143、miRNA-202与临床病理特征有关（P＜0.05）.结论 microRNA在血浆中差异表达与胆囊癌的发生及发展有关,其有望成为胆囊癌新的血液肿瘤标志物.
Objective To investigate the expression of microRNA in plasma of gallbladder cancer and its clinical significance.Methods miRNA microarray was performed in seven gallbladder cancer tissues and seven adjacent normal gallbladder tissues to identify differentially expressed miRNA.The results were validated in plasmas of 40 gallbladder cancers and 20 health people with real-time polymerase chain reaction （RT-PCR）.Results Eleven gallbladder cancer-related miRNAs were identified with miRNA microarray analysis.Among them,miRNA-21,miRNA-370,miRNA-187,miRNA-122,and miRNA-202 were up-regulated,and let-7a,miRNA-200b,miRNA-143,miRNA-31,miRNA-335,and miRNA-551 were down-regulated in gallbladder cancers.Moreover,let-7a,miRNA-21,miRNA-187,miRNA-143,miRNA-202,and miRNA-335 were validated with RT-PCR,which were consistent with miRNA microarray results with significant difference between gallbladder cancers and health people （P ＜ 0.05）.Furthermore,miRNA-187,miRNA-143,and miRNA-202 were related to clinical and pathological features（P ＜0.05）.Conclusions These data indicate that The differentially expressed plasma miRNAs are related to gallbladder carcinogenesis and might be the novel biomarkers of gallbladder cancers.
出处
《中国医师杂志》
CAS
2015年第8期1200-1203,共4页
Journal of Chinese Physician
