癌转移、复发是胃癌病人死亡的主要原因 ,也是治疗的最大障碍。近年对有关胃癌浸润转移机制的研究发现 :血管增生是肿瘤生长和转移的最基本要素 ;癌转移过程肿瘤细胞需先通过粘附分子与周围细胞或基质粘附 ,在众多蛋白酶参与降解周围基质后才能通过细胞外基质屏障 ;动力因子参 Cancer metastasis and recurrence are the main causes of death of gastric cancer patients, and they are the biggest obstacles to treatment. In recent years, studies on invasiveness and metastasis mechanisms of gastric cancer have found that vascular proliferation is the most basic factor for tumor growth and metastasis; tumor metastasis requires that tumor cells adhere to surrounding cells or matrix first through adhesion molecules, after many proteases participate in the degradation of surrounding matrix. Can pass through the extracellular matrix barrier; dynamic factor