Aurora-A异常表达在食管鳞癌淋巴结转移中的作用

目的 探讨Aurora-A在T3期食管鳞癌中的表达及其与预后的关系.方法 建立食管鳞癌患者的组织芯片,采用免疫组织化学方法检测食管鳞癌组织及其对应的癌旁正常组织中AuroraA的表达情况,分析Aurora-A的表达水平与淋巴结转移及生存率的相关性.结果 Aurora-A在食管鳞癌组织中的阳性表达率为74.1%(140/189),在癌旁正常组织中的阳性表达率为18.5%(35/189),差异有统计学意义(x2=105.162,P＜0.05).淋巴结阳性组的Aurora-A强阳性表达率为43.0%(46/107),淋巴结阴性组为7.4%(7/95),差异有统计学意义(x2=36.132,P＜0.05).Aurora-A强阳性表达者的生存率明显低于Aurora-A阴性者(P=0.0042).结论 Aurora-A的表达水平与T3期食管鳞癌的淋巴结转移和预后有关,可能对食管鳞癌患者的淋巴结转移和预后有一定的预测作用.

Clinical significance of abnormal expression of Aurora-A in human esophageal squamous cell carcinoma with or without lymph node metastasis

Objective China has the highest incidence and mortality of esophageal carcinoma in the world, and the esophageal squamous cell carcinoma (ESCC) is the major type. In this study, the authors investigated the expression of Aurora-A in stage T3 esophageal squamous cell carcinomas (ESCC) with positive and negative lymph node metastasis, and analyzed its relationship with prognosis of ESCC patients.Methods ESCC tissue arrays including 212 specimens had been constructed. The expression of Aurora-Ain both ESCC tissues and adjacent normal tissues was determined by immunohistochemical staining. The correlation between Aurora-A protein levels and lymph node status in ESCC and survival rate were statistically analyzed. Results The positive expression of Aurora-A was 74.07% ( 140/189 ) in tumor tissues and 18.52% (35/189) in adjacent normal tissues, showing a significant difference between them (x2 = 105. 162, P ＜0.05). In tumors with positive lymph nodes, strong positive expression of Aurora-A was found in 42.99% (46/107), while only 7.37% (7/95) in tumors with negative lymph nodes, with a statistically significant difference (x2 = 36.132, P ＜ 0.05 ). The cumulative survival rate of the patients with strong Aurora-A-positive tumors was significantly lower than that in patients with Aurora-A-negative tumors (P = 0. 0042, P ＜ 0.05 ). Conclusion The positive expression of Aurora-A in ESCC tissues is much higher than that in adjacent normal tissues. The expression of Aurora-A is higher in lymph node-positive tumors than in the lymph node-negative ones. There is a significantly longer cumulative survival rate in patients with negative Aurora-A expression than that in patients with strong positive Aurora-A expression.