DLC-1基因表达与肝细胞癌复发转移的关系

目的已报道人类染色体8p缺失可能与肝癌转移有关,本文应用实时定量聚合酶链反应(RQ- PCR)研究位于8p的DLC-1基因mRNA表达与肝细胞癌侵袭转移的关系。方法收集51例复旦大学中山医院外科手术切除的肝细胞癌(HCC)及癌旁正常组织标本,根据临床病理学指标,分为高低侵袭性两组,用RQ-PCR对不同侵袭性HCC之间的DLC-1基因表达进行分析。对不同侵袭转移潜能MHCC97-L、MHCC97-H、HCCLM3、Hep3B及HepG2肝癌细胞系用同样方法分析DLC-1基因的表达差异。结果非转移细胞系Hep3B和HepG2与转移细胞系MHCC97-L、MHCC97-H和HCCLM3之间DLC—1基因表达差异有统计学意义(P

Relationship between DLC-1 expressions and metastasis in hepatocellular carcinoma

Objective To study the relationship between the expression level of DLC-1 mRNA (located in 8p) and the invasion/metastasis of human hepatocellular carcinoma (HCC). Methods Fifty-one surgical specimens of human HCC were divided into high-invasive and low invasive groups according to their clinicopathological features. DLC-1 mRNA expression was studied in the 51 HCC specimens as well as 5 different metastasis potential cell lines using realtime quantitative PCR (RQ-PCR). Results The expression level of DLC-1 mRNA in HCC specimens with high invasiveness was significantly lower than that with low invasiveness (P < 0.05). The expression levels of DLC-1 mRNA were significantly different between non-metastatic (Hep3B and HepG2) and metastatic (MHCC97-H, MHCC97-L and HCCLM3) cell lines (P < 0.05). From MHCC97-L to HCCLM3, with an increase of invasiveness and metastatic potentials, the expression level of DLC-1 decreased correspondingly, and its expression level in HCCLM3 was significantly lower than that in MHCC97-L (P < 0.01). Conclusion The expression of DLC-1 mRNA may play an important role in inhibiting the invasiveness and metastasis of HCC.