甲状腺癌VEGFR-3信号途径相关蛋白表达的意义

目的 探讨VEGFR-3信号途径在甲状腺癌淋巴道转移中的作用.方法 RT-PCR检测甲状腺癌组织及正常甲状腺组织VEGFR-3的表达水平;免疫组织化学染色法检测甲状腺癌组织及正常甲状腺组织VEGFR-3的表达,测定淋巴管密度.结果 甲状腺癌组织中VEGFR-3的表达率为100%,高于正常组织组（P＜0.05）;LVD在癌组织中显著高于正常组织对照组,且淋巴结有癌转移组（N＋）的LVD显著高于淋巴结无转移组（NO）（P＜0.05）.结论 甲状腺癌组织中高表达VEGFR-3,表达强度随淋巴结转移的严重度增加而增强,VEGFR-3受体介导的信号传导途径可能是导致甲状腺癌出现淋巴结转移的重要因素.

The significance of expression of VEGFR-3 signaling associated protein in thyroid cancer

Objective To investigate the involvement of VEGFR-3 signaling pathway in lymphatic metastasis of thyroid cancer. Methods The expression of VEGFR-3 mRNA in thyroid carcinoma and normal thyroid tissue was detected by RT-PCR. The expression of VEGFR-3 mRNA and the lymphatic vessel density (LVD) in thyroid carcinoma and normal thyroid tissue was measured by immunohistochemical staining. Results All thyroid cancer samples expressed VEGFR-3 and the expression rate of VEGFR-3 in thyroid carcinoma was significantly higher than that in the normal thyroid group ( P ＜ 0. 05 ). LVD in thyroid cancer was significantly higher than that in normal control. LVD with lymph nodes metastasis ( N + ) was significantly higher than that without lymph node metastasis (NO) (P ＜ 0. 05). Conclusions There is upregulatin of VEGFR-3 expression in thyroid carcinoma. The higher the expression of VEGFR-3, the severer of lymph node metastasis. VEGFR-3 receptor-mediated signal transduction pathway might be an important factor of thyroid cancer lymph node metastasis.