粘着斑激酶在乳腺癌的表达及其与血管生成的关系

目的 研究乳腺癌组织中粘着斑激酶(FAK)的表达及其与微血管密度(MVD)的关系,探讨FAK介导的细胞信号转导系统对乳腺癌血管生成的作用和意义.方法 应用SP法对88例乳腺癌组织和30例乳腺良性病变组织进行FAK和CD34免疫组化染色,分析FAK蛋白表达和CD34标记的MVD值之间,及其与乳腺癌临床病理参数之间的关系.结果 在88例乳腺癌中FAK的阳性表达率为68.2%(60/88),MVD为(34.52±13.11)/HPE,与良性对照组比较均有显著差异(P＜01);FAK表达和MVD与乳腺癌肿瘤大小、腋窝淋巴结转移、临床分期呈正相关(P＜0.05),与患者年龄、组织病理学分级未见显著相关(P＞0.05);乳腺癌FAK表达与MVD呈正相关(P＜0.01).结论 FAK蛋白表达和微血管形成与乳腺癌的侵袭转移密切相关,FAK表达对乳腺癌血管生成具有促进作用.

Focal adhesion kinase expression and angiogenesis in breast carcinoma

OBJECTIVE: To investigate the expression of focal adhesion kinase (FAK) in breast carcinoma tissues and its association with microvessel density (MVD), and explore the relationship between FAK-mediated cell signaling and angiogenesis in breast carcinoma. METHODS: FAK and CD34 expressions were examined by immunohistochemistry with SP method in 88 breast carcinoma tissues and 30 tissues of benign breast disease. The correlations of FAK protein expression with MVD marked with CD34 and clinicopathological parameters were analyzed in breast carcinoma. RESULTS: In the 88 breast carcinomas, the positivity rate of FAK was 68.2% (60/88) with MVD of (34.52-/+13.11) /HPE, showing significant differences from those of the benign disease group (P<0.01). FAK expression and MVD in breast carcinoma tissues were positively related to tumor size, axillary lymph node metastasis and clinical stage (P<0.05), but not to the patients' age or histopathological grade of the tumors (P>0.05). In breast carcinoma, the expression of FAK was positively related to MVD (P<0.01). CONCLUSIONS: FAK protein expression and MVD are closely correlated with the invasion and metastasis of breast carcinoma. FAK expression can promote angiogenesis of breast carcinoma.