MicroRNA-625 在食管鳞癌中的表达及临床意义*

目的:探讨microRNA- 625（miR-625）在食管鳞癌（esophageal squamous cell carcinoma ，ESCC）中的表达及其与临床参数的相关性，探究miR-625 对ESCC细胞系KYSE70迁移和增殖的影响。方法:实时荧光定量（real-time polymerase chain reaction ，PCR ）检测2014年2 月至2015年4 月郑州大学第一附属医院手术切除的86例ESCC及癌旁正常组织、ESCC细胞系和正常永生化食管上皮细胞系中miR-625 的表达，统计学分析其表达水平与ESCC患者临床病理参数及预后的相关性。Transwell 实验检测miR-625 对细胞迁移能力的影响，细胞计数Kit- 8（CCK-8）法检测miR-625 对细胞增殖的影响。结果:ESCC组织中miR-625 的表达明显低于癌旁正常组织（P < 0.05），ESCC细胞系中miR-625 表达水平与正常永生化食管上皮细胞相比，显著下调（P < 0.05）。miR-625 的表达与肿瘤直径、分化程度及淋巴结转移呈负相关（P < 0.05）。 随访数据提示miR-625 低表达组患者预后更差（P <0.05）。 miR-625 能够抑制ESCC的迁移和增殖（P < 0.05）。 结论:miR-625 作为抑癌基因参与ESCC的发生发展，提示miR-625 可能作为一个ESCC治疗靶点和预后判断的分子标志物。 

Clinical significance of microrna-625 expression in esophageal squamous cell carcino-ma

Objective: To analyze the correlation of miR-625 expression with clinicopathological characteristics in esophageal squa-mous cell carcinoma (ESCC) and to explore the effect of miR-625 on the migration and proliferation of ESCC cells. Methods:The expres-sion level of miR-625 was determined through real-time PCR in 86 paired human ESCC tissue specimens and tumor-adjacent normal esophageal tissue specimens, ESCC cell lines, and esophageal epithelial cell line. The associations of miR-625 expression with clinico-pathological characteristics and survival in ESCC patients were analyzed. Transwell and CCK-8 assays were performed to examine the effect of miR-625 expression on migration and proliferation of ESCC cells. Results:Compared with tumor-adjacent normal specimens, miR-625 was significantly downregulated in ESCC tissue specimens (P<0.05). MiR-625 expression was decreased in ESCC cell lines com-pared with human esophageal epithelial cell lines (P<0.05). Lower miR-625 expression was associated with poorer prognosis and sur-vival. The migration and proliferation abilities of ESCC cells were inhibited by miR-625 overexpression (P<0.05). Conclusion:MiR-625 acts as a tumor suppressor gene in the development and progression of ESCC, suggesting that miR-625 may serve as an efficient prog-nosis biomarker and a potential therapeutic target for ESCC.