胆管癌中PTEN和p16抑癌基因蛋白的表达及其临床意义

目的　探讨抑癌基因PTEN和p16蛋白表达与胆管癌生物学行为的关系。方法　应用免疫组化方法检测 43例胆管癌组织和 10例慢性胆管炎胆管壁组织的PTEN和p16基因蛋白的表达 ,并综合分析它们与胆管癌临床病理因素间的关系。结果　在胆管癌组织中 ,PTEN和p16表达阳性率分别为3 9 .5 %和 44 .2 %。PTEN和p16表达与胆管癌的TNM分期、分化程度和转移密切相关 (P <0 .0 5 )。PTEN表达与p16表达呈正相关 (r =0 .62 ,P <0 .0 0 5 )。结论　检测PTEN和p16抑癌基因表达可作为评估胆管癌生物学行为和预后的参考指标。

Significancy of expression of tumor suppressor gene PTEN and p16protein in cholangiocarcinoma

Objective To investigate the relationship between the expression of tumor suppressor gene PTEN and p16 protein and the biologcal behaviors of cholangiocarcinomas.Methods The expression of PTEN and p16 protein in 43 of cholangiocarcinoma tissues and 10 chronic cholangitis tissues were investigated by immunohisto-chemical technique.The relationship between expression of PTEN and p16 protein and the clinicopathological parameters of cholangiocarcinoma was analyzed. Results The positive expression rate of PTEN and p16 protein in cholangiocarcinoma was 39.5% and 44.2%,respectively.The expression of PTEN and p16 protein were positively relatad with the TNM staging,differentiation degree and metastasis of cholangiocarcinoma (P<0.05).Moreover,there was a positive correlation between the PTEN and p16 protein expression in cholangiocarcinoma(r=0.49,P<0.005).Conclusions Expression of tumor suppressor gene PTEN and p16 could be helpful in predicting the biological behavior and prognosis of cholangiocarcinoma.