人类肿瘤的90%来源于上皮组织,上皮细胞需要在生长信号的不断作用下避免分化和凋亡,获得无限复制的潜能,并依靠新生血管生成、获得侵袭、转移能力才能最终形成肿瘤。整个过程依赖于肿瘤细胞与 Ninety percent of human tumors are derived from epithelial cells. Epithelial cells need to avoid differentiation and apoptosis under the constant influence of growth signals and have the potential to replicate indefinitely. Relying on angiogenesis, invasion and metastasis can finally form tumors. The whole process depends on the tumor cells and