抑癌基因PTEN和血管内皮生长因子-C表达与乳腺癌淋巴管密度的相关性及其临床意义

目的:研究乳腺癌中抑癌基因PTEN和血管内皮生长因子-C(VEGF-C)表达与肿瘤间质淋巴管密度(LVD)的相关性及其临床意义。方法:应用EliVision免疫组化法检测90例乳腺浸润性导管癌组织和30例乳腺纤维腺瘤组织中PTEN、VEGF-C和淋巴管内皮细胞透明质酸受体1(LYVE-1)的表达,计算LYVE-1标记的乳腺癌间质淋巴管的密度,分析PTEN和VEGF-C与LVD的关系。结果:PTEN和VEGF-C在乳腺癌中的表达阳性率分别为48.9%、47.8%,LVD为(8.03±2.26)个/HPF,与良性对照组比较均有显著差异(P<0.01)。PTEN阳性率随乳腺癌淋巴结转移的出现和临床分期的升高而降低(P<0.05),乳腺癌VEGF-C阳性率随淋巴结转移的出现和临床分期的升高而增加(P<0.05),PTEN阳性组乳腺癌的LVD水平低于PTEN阴性组(P<0.05),VEGF-C阳性组乳腺癌的LVD水平高于VEGF-C阴性组(P<0.01),PTEN阳性组乳腺癌的VEGF-C阳性率低于PTEN阴性组(P<0.05)。结论:PTEN和VEGF-C的异常表达与乳腺癌间质淋巴管密度密切相关,在乳腺癌的淋巴管生成及侵袭转移过程中具有重要作用。

Relationships between the expression of tumor suppressor gene PTEN and vascular endothelial growth factor-C and the lymphatic vessel density of breast cancer and their clinical significance

Objective:To study the relationships between the expression of tumor suppressor gene PTEN and vascular endothelial growth factor-C(VEGF-C) and the lymphatic vessel density(LVD) of tumor stroma in breast cancer and their clinical significance.Methods:The expression of PTEN,VEGF-C and lymphatic vessel endothelial hyaluronan receptor 1(LYVE-1) was examined by Elivision immunohistochemistry in 90 cases of breast invasive ductal cancer tissues and 30 cases of breast fibroadenoma.To calculate the density of breas...