目的研究类胰蛋白酶对人乳腺癌细胞系MDA-MB-435侵袭力的影响及其机制。方法通过体外细胞侵袭力试验观察不同浓度、不同时间类胰蛋白酶对乳腺癌MDA-MB-435细胞跨膜侵袭力的影响，并利用RT-PCR以及明胶酶谱法研究类胰蛋白酶对基质金属蛋白酶-2（matrix metalloproteinase-2，MMP-2）和金属蛋白酶组织抑制物（tissue inhibitor of metalloproteinases-2，TIMP-2）表达水平的调节。结果150～500pmol／L的类胰蛋白酶可以促进MDA-MB-435细胞的跨膜侵袭；还可以促进MMP-2、TIMP-2的mRNA表达（P〈0．01）和MMP-2的蛋白表达（P〈0．05）。结论类胰蛋白酶可以促进人乳腺癌细胞系MDA-MB-435细胞的跨膜侵袭，该作用可能与增加MMP-2的mRNA和蛋白表达、TIMP-2的mRNA表达相关。
The growth and spread of malignant neoplasms largely depend on angiogenesis.Recent studies demonstrate that a various types of neovascularization including angiogenesis,vasculogenesis and vasculogenic mimicry exist in a few highly aggressive tumors.Ovarian carcinoma is the leading cause of death in gynecologic malignancy.Here,we review the effect of angiogenesis,vasculogenesis and vasculogenic mimicry in development and spread of ovarian carcinoma.
