miR-21在上皮性卵巢癌组织中的表达及临床意义

Expression of microRNA-21 in ovarian epithelial carcinoma and its clinical significance

目的探讨微小RNA-21(miR-21)在上皮性卵巢癌组织中的表达及其与临床病理特征间的关系。方法采用茎环实时荧光逆转录聚合酶链反应(real-timeRT-PCR)检测48例上皮性卵巢癌组织、24例良性上皮性卵巢肿瘤及15例正常卵巢组织标本中miR-21表达。结果茎环real-timeRT-PCR检测miR-21表达的敏感性和特异性良好;miR-21在卵巢癌组织中的相对表达量(4.849±1.813)显著高于良性卵巢肿瘤(1.133±0.291)及正常卵巢组织(P<0.01),后两组间miR-21表达无明显差异。miR-21表达随卵巢癌的临床分期和组织分级的进展呈上升趋势,而且在有淋巴结转移组明显高于无淋巴结转移组(P均<0.01)。结论miR-21在上皮性卵巢癌组织中的表达升高,提示其可能在卵巢癌的发生发展中发挥致癌基因的作用,并且与卵巢癌的演进及不良预后密切相关。

Objective To investigate the expression of microRNA-21 （miR-21） in ovarian epithelial carcinoma and its association with the clinicopathological features. Methods The expression of miR-21 was detected by Stem-loop real-time RT-PCR in 48 cases of ovarian epithelial carcinomas, 24 cases of benign ovarian epithelial tumors and 15 cases of normal ovarian tissues. Results The relative expression level of miR-21 （2- △△CT） was 4.849 ±1.813 in the ovarian epithelial carcinomas, significantly higher than that in the benign ovarian tumors and normal ovarian tissues （P0.01）, but comparable between the latter two groups. The expression of miR-21 was not correlated to the histological type, but increased significantly with the progression of the clinical stages and histological grading （P0.01）, showing a close correlation to lymphatic metastasis. Conclusion MiR-21 might play a role as an oncogene in the tumorigenesis and development of ovarian epithelial carcinoma, and is possibly correlated to the progression and prognosis of ovarian epithelial carcinoma.