肿瘤转移抑制蛋白在肝癌中的表达及其意义

目的 探讨肿瘤转移抑制蛋白1(metastasis suppressor 1,MTSS1)在肝癌组织,肝硬化组织,正常肝组织中的表达及其意义.方法采用免疫组织化学检测MTSS1在肝癌组织,肝硬化组织,正常肝组织中的表达,并用单因素分析表达与临床病理因素的关系.用Spearman等级相关分析MTSSl表达水平与肝癌患者TNM分期的关系.对肝癌患者进行5年生存随访,采用Kaplan-Meier生存曲线分析.结果 肝癌组织MTSS1表达水平与正常肝组织比较,差异有统计学意义(U=168.000,P＜0.05);肝癌组织比肝硬化组织高,二者比较差异有统计学意义(U=106.000,P＜0.05);MTSS1表达水平与肝癌患者的TNM分期、有无血管侵袭和肿瘤包膜有关(分别U=259.000,258.500,202.000,均P＜0.05),与肝癌患者的年龄、性别、肿瘤大小、AFP水平、乙肝表面抗原无关(P＞0.05).MTSS1表达水平与临床TNM分级间呈负相关,即临床TNM分级越早期所对应的MTSS1表达水平越高(rs=-0.383,P＜0.05).MTSS1阳性表达患者5年生存率明显低于MTSS1阴性及弱阳性表达患者,差异有统计学意义(分别34.1%,52.3%,x2=6.386,P＜0.05).结论 MTSS1高表达可能在早期肝癌进展中发挥重要作用,预示预后不良.

Abstract：

Objective To explore the expression and significance of MTSS1 ( metastasis suppressor 1) in hepatocellular carcinoma.Methods MTSS1 expression was detected by immunohistochemistry in hepatocellular carcinoma, liver cirrhosis and normal liver tissues.Single-factor analysis was used to study the relationship with clinicopathological factor.Correlations between MTSS1 expression and TNM stage were analyzed with Spearman rank correlation analysis.Postoperative 5-year survival was evaluated using Kaplan-Meier survival curve analysis.Results The expression of MTSS1 in hepatocellular carcinoma was higher than normal liver tissue ( U = 168.000, P ＜ 0.05), and liver cirrhotic tissue ( U = 106.000, P ＜ 0.05); MTSS1 expression was correlated with TNM stage of hepatocellular carcinoma patients, lymph vascular invasion and tumor capsule ( separately U = 259.000, 258.500, 202.000, all P ＜ 0.05).MTSS1 expression in hepatocellular carcinoma was not correlated with patients age, gender, tumor size, AFP level, and hepatitis B surface antigen.MTSS1 expression and TNM stage of liver cancer patients was negatively correlated ( rs = - 0.383 , P ＜ 0.05 ).Postoperative 5-year survival of hepatocellular carcinoma patients with MTSS1 positive expression was significantly poorer than patients with negative and weakly positive expression (respectively 34.1% and 52.3% , x2 =6.386, P ＜ 0.05).Conclusions MTSS1 high expression may play an important role in the early hepatocellular carcinoma progression, indicating a poor prognosis.