原发性肝癌中10号染色体缺失的磷酸酶张力蛋白同源物基因与甲胎蛋白的表达相关性研究

Relationship between the expression of Phosphatase and tension homolog deleted on chromosome ten and Alpha fetoprotein in hepatocellular carcinoma

目的探讨原发性肝癌（简称肝癌）中10号染色体缺失的磷酸酶张力蛋白同源物基因（PTEN）与甲胎蛋白（AFP）的表达及相关性。方法应用免疫组织化学方法检测30例肝癌患者PTEN和AFP的表达情况，分析PTEN与肝癌临床病理因素的关系，分析PTEN与AFP表达的相关性，以及血清及肝癌组织AFP表达的差异。结果PTEN的表达与肿瘤直径、CLIP评分有关（P〈0．05），与年龄、性别、Child分级、包膜是否完整以及是否术前行TACE治疗无关（P〉0．05）。PTEN与AFP的表达呈负相关（Rs=-0．422，P=0．043），血清AFP与组织AFP表达呈正相关（Rs=0．380，P=0．042），但针对个体表达并不一致。结论PTEN和AFP分别为磷酸肌醇酯3-激酶（P13K）／蛋白激酶B（AKT）通路的负向和正向调节因子，在肝癌中两者表达呈负相关。检测肝癌组织AFP可能更有意义，并可能成为治疗肝癌的新靶点。

Objective To investigate the expression and relationship between Phosphatase and tension homolog deleted on chromosome ten （PTEN） and Alpha fetoprotein（AFP） in hepatocellular carcinoma. Methods PTEN and AFP expression was examined by immunohistoehemical method. Results PTEN expression was significantly weaker in patients with tumor less than 5.0 cm and patients with CLIP score ≥ 1 （P 〈 0.05）. The expression of PTEN and AFP was negatively correlated （Rs =-0.422, P = 0.043）, serum AFP and tissue expression of AFP was positively correlated （R^2 = 0.380, P = 0.042）, but for individual expression was not consistent. Conclusions PTEN and AFP is respectively negative and positive adjustment factor of PI3K/AKT pathway. Tissue expression of AFP may be more significant, and may become the new targets for the treatment of hepatocellular carcinoma.