胆管细胞癌中CtBP1、Zeb1、Zeb2与E-cadherin蛋白的表达及临床意义

摘要

Purpose To investigate the expression of transcriptional suppressor CtBP1,Zeb1,Zeb2 and their target gene E-cadherin,and their significance in cholangiocarcinoma.Methods The expression of CtBP1,Zeb1,Zeb2 and E-cadherin proteins in cholangiocarcinoma and the paired non-neoplastic tissue array were detected by the immunohistohemical staining.Results The positive rates of CtBP1 expression in cholangiocarcinoma and the paired non-neoplastic tissue were 44.44％ and 17.86％,these of Zeb2 were 34.92％ and 10.71％,and these of E-cadherin were 50.79％ and 100％,respectively.The differences between the groups were statistically significant (all P ＜ 0.05).There was only one case with expression of Zeb1 in cholangiocarcinoma,but no expression in the paired non-neoplastic tissue.CtBP1 was correlated with the degree of differentiation of cholangiocarcinoma (P ＜ 0.05).Ecadherin was related to the differentiation degree,and distant metastasis of cholangiocarcinoma (all P ＜ 0.05).The E-cadherin expression was negatively correlated with CtBP1 and Zeb2 (r =-0.034,-0.029,all P ＜ 0.05).The Zeb2 expression was positively correlated with CtBP1 (r =0.228,P =0.005).Conclusion CtBP1,Zeb2 and E-cadherin express abnormally in cholangiocarcinoma.CtBP1,Zeb2 may be involved in the regulation of E-cadherin expression.Joint detection of CtBP1 and Ecadherin is expected to be a reference index to evaluate the malignant biological behavior of cholangiocarcinoma.%目的 探讨转录抑制因子Zeb1、Zeb2、转录辅抑制因子CtBP1及其靶基因E-cadherin在胆管细胞癌中的表达及CtBP1、E-cadherin的临床意义.方法 采用免疫组化法检测胆管细胞癌及癌旁组织芯片中CtBP1、Zeb1、Zeb2和E-cadherin的表达.结果 CtBP1在胆管细胞癌及癌旁组织中的阳性率分别为44.44％和17.86％,Zeb2分别为34.92％和10.71％,E-cadherin分别为50.79％和100％,组间差异均有统计学意义(P均＜0.05).Zeb1在胆管细胞癌仅1例表达,而在癌旁组织中不表达.CtBP1与胆管细胞癌的分化程度相关(P＜0.05),E-cadherin与胆管细胞癌的分化程度及远处转移有关(P均＜0.05).E-cadherin和CtBP1及Zeb2表达呈负相关(r=-0.034、-0.029,P均＜0.001),CtBP1和Zeb2表达呈正相关(r=0.228,P=0.005).结论 胆管细胞癌中CtBP1、Zeb2与E-cadherin均表达异常,CtBP1、Zeb2可能共同参与E-cadherin表达调控.联合检测CtBP1和E-cadherin有望成为评估胆管细胞癌恶性生物学行为的参考指标.