乳腺癌组织中EG-1 mRNA的表达与临床病理特征及预后的关系

目的 探讨EG-1基因在乳腺癌组织中的表达及其与乳腺癌临床特征、预后的相关性.方法 采用RT-PCR技术,检测EG-1基因在72例乳腺癌及18例良性乳腺组织中的表达,分析其表达与临床特征及预后的相关性.结果 71%(51/72)患者的乳腺癌石蜡标本中EG-1mRNA阳性,而良性乳腺组织中的表达率为24%(4/18).EG-1基因在乳腺癌组织中的表达与淋巴结转移、VEGF蛋白有关(P＜0.05),与年龄、月经状况、肿瘤大小、组织学分级、Her-2蛋白、p53蛋白、激素受体状况无关,EG-1mRNA阳性患者远处转移率和复发率高于阴性患者.多因素回归分析发现EG-1mRNA阳性是乳腺癌的独立预后因素之一. 结论 EG-1基因在乳腺癌组织中异常高表达,且与淋巴结转移及VEGF蛋白相关,是乳腺癌潜在的预后标记物.

Clinicopathology, prognosis and EG-1 mRNA in breast cancer

Objective To investigate the correlation between the expression of EG-1 in breast cancer and the clinicopathological factors and prognosis of breast cancer.Methods EG-1 mRNA expression in 72 malignant and 18 benign breast tissues were evaluated by RT-PCR method,and its correlation with clinical characteristics and prognosis were retrospectively analyzed.Results EG-1 expression level was higher in malignant tissue than in the corresponding benign breast tissue(71%vs.24%,P＜0.05).EG-1 expression was significantly correlated with lymph node metastasis and protein VEGF (P＜0.05)and was not significantly with age,menopause,tnmor size,grade,hormone status,protein Her2 and pS3.The metastastic rate and recurrence rate in EG-1 positive patients was higher than that in EG-1 negative patients.Multivariate Cox model showed that EG-1 positive was an independent factor affecting overall survival and disease free survival.Conclusions EG-1 expression was up-regulated in breast cancer and significantly correlated with lymph node metastasis and protein VEGF.