摘要
目的:探讨microRNA-224(miR-224)对结肠癌细胞中的表达及意义。方法:用real-time PCR检测4种结肠癌细胞株(Caco-2、HCT116、HT-29、LoVo)和正常结肠黏膜组织中miR-224的表达水平;将HCT116细胞分别转染miR-224模拟物和阴性对照组序列,以未处理的HCT116细胞作为空白对照,用real-time PCR法检测各组细胞miR-224的表达水平,用MTT法和平板克隆实验法检测各组细胞的增殖情况,用流式细胞仪检测各组细胞周期情况。结果:4种结肠癌细胞株miR-224的表达均明显高于正常结肠黏膜组织(均P<0.05);与空白对照组HCT116细胞比较,miR-224模拟物转染组HCT116细胞miR-224的表达水平明显升高,增殖活力明显增强,细胞克隆数量明显增高(均P<0.05);细胞周期G1到S期转换的趋势增强(P=0.074);阴性对照组序列转染组HCT116细胞的各项指标差异均无统计学意义(均P>0.05)。结论:miR-224在结肠癌细胞中表达上调,miR-224可能通过促进细胞增殖与细胞周期的演进,而在结肠癌发生发展的过程中发挥促癌基因的作用。
Objective: To investigate the expression and significance ofmicroRNA-224 (miR-224) in colon cancer cells. Methods: The miR-224 expression in four colon cancer cell lines (Caco-2, HCT116, HT-29 and LoVo) and normal colonic mucosal tissue were detected by real-time RT-PCR; HCT 116 cells were transfected with miR-224 mimics or scrambled negative control sequence respectively, using the untreated HCT116 cells as blank control, and then the miR-224 expression was determined by real-time PCR, proliferation status was measured by M'IT assay and plate colony formation assay, and cell cycle phase distribution was analyzed by flow cytometry in each group of cells.
出处
《中国普通外科杂志》
CAS
CSCD
北大核心
2014年第4期478-482,共5页
China Journal of General Surgery
基金
国家自然科学基金资助项目资助项目(81072034)
河北省自然科学基金资助项目(C2011206103)
河北省国际合作资助项目(12396105D)
关键词
结肠肿瘤
微RNAS
细胞增殖
The miR-224 expression in each of the four colon cancer cell lines was higher than that in normal
作者简介
于卫芳,河北医科大学第一医院副主任医师,主要从事消化道肿瘤早期诊断与治疗方面的研究。
通信作者:赵增仁,Email:zzr—doctor@163.com