Mir-145在肝癌细胞及肝癌组织中的表达及其意义

目的 观察微小RNA(miRNA)mir-145在正常胚肝细胞株L02、肝癌细胞株MHCC97和SMMC7721中的表达,同时检测该miRNA在正常肝组织及肝细胞癌组织中的表达,探讨其在肝癌发生发展中的作用和意义.方法 应用实时定量聚合酶链反应(PCR)方法检测mir-145在正常细胞株及肝癌细胞株中的表达,同时收取肝细胞癌手术患者正常组织、癌周组织、癌组织,检测其表达并分析其意义.结果 mir-145在肝癌细胞(MHCC97、SMMC7721)中的表达比正常肝细胞L02显著降低(0.312±0.025、0.396±0.076、0.954±0.037,P＜0.05),在癌组织中表达显著低于正常组织与癌周组织(0.162±0.002、0.972±0.054、0.956±0.018,P＜0.05),正常组织及癌周组织比较差异无统计学意义(P＞0.05).结论 mir-145在肝癌细胞及肝癌组织中的低表达,可能与肝癌发生发展密切相关,并可能作为肝癌的诊断及预后的指标.

Abstract：

Objective To explore the role of miR-145 in human hepatocellular carcinoma ( HCC). We investigate the expression of miR-145 in human embryonic hepatocytes ( L02 cells),hepatocellular carcinoma cell lines (MHCC97 ,SMMC7721) ,HCC tissues and normal liver. Methods We detected the expressions of miR-145 in human embryonic hepatocytes, hepatocellular carcinoma cell lines ( MHCC97,SMMC7721) ,HCC tissues,cancer organizations and normal liver by real-time PCR. Result The expression of miR-145 in hepatocellular carcinoma cell lines ( MHCC97,SMMC7721) is significantly lower than the human embryonic hepatocytes ( 0. 312 ± 0. 025,0. 396 ± 0. 076,0. 954 ± 0. 037, P ＜ 0. 05), and compared with the cancer organizations and normal liver,the expression of miR-145 in HCC tissues is significantly decreased (0. 162 ±0.002,0. 972 ±0.054,0.956 ±0. 018,P＜0. 05). Conclusion These results indicate that the miR-145 probably involved in HCC pathogenesis and was the indicator of diagnosis and prognosis of the HCC.

Expression of miR-145 in hepatocellular carcinoma and its significance

Objective To explore the role of miR-145 in human hepatocellular carcinoma ( HCC). We investigate the expression of miR-145 in human embryonic hepatocytes ( L02 cells),hepatocellular carcinoma cell lines (MHCC97 ,SMMC7721) ,HCC tissues and normal liver. Methods We detected the expressions of miR-145 in human embryonic hepatocytes, hepatocellular carcinoma cell lines ( MHCC97,SMMC7721) ,HCC tissues,cancer organizations and normal liver by real-time PCR. Result The expression of miR-145 in hepatocellular carcinoma cell lines ( MHCC97,SMMC7721) is significantly lower than the human embryonic hepatocytes ( 0. 312 ± 0. 025,0. 396 ± 0. 076,0. 954 ± 0. 037, P ＜ 0. 05), and compared with the cancer organizations and normal liver,the expression of miR-145 in HCC tissues is significantly decreased (0. 162 ±0.002,0. 972 ±0.054,0.956 ±0. 018,P＜0. 05). Conclusion These results indicate that the miR-145 probably involved in HCC pathogenesis and was the indicator of diagnosis and prognosis of the HCC.