结肠慢传输型便秘中微小RNA-128表达与Cajal间质细胞异常的关系  被引量:6

Relationship between miR-128 expresssion and abnormal colonic interstitial cells of Cajal in patients with colonic slow transit constipation

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作  者:郑科炎[1] 赵建[1] 江从庆[1] 刘志苏[1] 汪名飞[1] 陈炜[1] 吴云华[1] 丁召[1] 钱群[1] 夏冰[1] 

机构地区:[1]武汉大学中南医院结直肠肌门外科湖北省肠病医学临床研究中心肠病湖北省重点实验室 ,430071

出  处:《中华实验外科杂志》2012年第9期1768-1770,共3页Chinese Journal of Experimental Surgery

基  金:湖北省科学技术研究和开发项目(417);湖北省自然科学基金项目(2011CDB521)

摘  要:目的观察微小RNA-128(miR-128)在结肠慢传输型便秘(STC)病变结肠组织和正常结肠组织中的表达,分析其与结肠Cajal间质细胞(ICC)异常的关系。方法实时荧光定量聚合酶链反应(RT-qPCR)和免疫组织化学技术分别检测结肠STC病变结肠组织miR-128及CDl17(1CC的特异性标志物)的表达,并分析两者表达的相关性。运崩牛物信息学微小RNA(miRNA)靶基因预测软件寻找与ICC关系密切的miR-128靶基因。结果与正常结肠组织比较,结肠STC病变结肠组织miR-128表达水平和ICC数同显著降低(P〈0.05),且两者呈正相关。运用TargetScan软件共找}H1047个miR-128的靶基因,其中包括与ICC关系密切的干细胞因子(SCF)和胰岛素样生长因子-1(IGF-1),、结论miR-128可能通过其靶基因调节结肠ICC参与了STC发病的分子机制。Objective To explore the relationship between mieroRNA-12S (miR-12S) expresssion and ahnormal cohmic interstitial cells of Cajal (ICC) in patients with colonic slow transit constipation. Methods We assessed the relation between miR-128 expresssion and ICC using real time fluoreseent quantitative polymerase chain reaction (RT-qPC1R) quantitative imnmnohistoehemistry and immunohisto- chemist~)' ti}r CD117, and identified potential miR-128 target genes whose expressions are associated with ICC by bioinformatics. Results Expression of miR-128 and numbers of ICC were significantly decreased in eoh}ni{: STC {ompared with normal colon samples. These results showed a strong positive correlation be- tween miR-128 expression and numbers of ICC. We predicted 1047 target genes for miR-128 using Tar- getSean sottware. As the mitl-128 target genes, Stem cell factor (SCF) and Insulin-like growth factor 1 ( IGF-I ) are involved in the regulation of colonic ICC. Conclusion miR-128 may play a crucial part in the pathogenesis of STC hy regulating the development and maintenance of ICC.

关 键 词:微小RNA 慢传输型便秘 CAJAL间质细胞 发病机制 

分 类 号:R574.62[医药卫生—消化系统]

 

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