膀胱尿路上皮癌中DAB2IP和β-catenin的表达及临床意义

摘要

Purpose To investigate the clinical utility of DAB2IP (DOC-2/DAB2 interactive protein)and β-catenin expression in bladder urothelial carcinoma (BUC).Methods The expression of DAB2IP and β-catenin was detected in 104 BUC cases and 40 peritumorial tissues using EnVision two-step immunohistochemical method,and the association with BUC clinicopathological parameters was analyzed.Results The expression of DAB2IP in BUC was significantly less than that of peritumorial normal tissues,and the expression of β-catenin in BUS was significantly higher than that of peritumorial normal tissues (P ＜ 0.05).DAB2IP expression and histologic grading,clinical pathologic staging and 5 years survival rate had statistical significance (P ＜ 0.05).No statistical significance with gender,age,tumor diameter and in patients with incipient/recurrence.β-catenin expression and age,histologic grading,clinical pathologic staging,tumor diameter and 5 years survival rate have statistical significance (P ＜ 0.05).No statistical significance correlated with gender and in patients with incipient/ recurrence,DAB2IP and β-catenin expression in BUC are negatively correlated (P ＜ 0.05).Conclusion In bladder urothelial carcinoma,down-regulation of DAB2IP and up-regulation of β-catenin,are in a negative correlation.Abnormal expression of DAB2IP and β-catenin is correlated with histologic grading,clinical pathologic staging and prognosis.%目的 探讨DAB2相互作用蛋白(DOC-2/DAB2 interactive protein,DAB2IP)及β-连环蛋白(β-catenin)在膀胱尿路上皮癌(bladder urothelial carcinoma,BUC)中的表达及临床意义.方法 采用免疫组化EnVision两步法检测104例BUC组织和40例癌旁正常膀胱黏膜组织中DAB2IP及β-eatenin蛋白表达,并分析两者表达与BUC临床病理特征及预后的关系.结果 BUC组织中DAB2IP蛋白表达明显低于癌旁正常膀胱黏膜组织,β-catenin蛋白表达明显高于癌旁正常膀胱黏膜组织(P＜0.05).DAB2IP蛋白表达与BUC组织学分级、病理分期及5年生存率差异有显著性(P＜0.05),与患者性别、年龄、肿瘤直径以及初发/复发患者无相关性(P＞0.05).β-catenin蛋白表达与BUC患者年龄、组织学分级、病理分期、肿瘤直径及5年生存率有相关性(P＜0.05),与患者性别以及初发/复发患者无相关性(P＞0.05).BUC组织中DAB2IP及β-catenin蛋白表达呈负相关(P＜0.05).结论 BUC组织中DAB2IP表达下调,β-catenin表达升高,且两者表达呈负相关,DAB2IP和β-catenin异常表达与BUC组织学分级、病理分期及预后有关.