细胞凋亡是一种由基因调控的高度保守的细胞主动死亡过程,在多细胞有机体的生长发育,维持组织同源性等过程起重要作用。肿瘤的发生与凋亡过程的紊乱有着密切的关系。细胞凋亡是细胞由于降解酶的作用,降解酶主要是水解酶,如蛋白酶与核酸酶作用,在近乎正常的细胞质膜内趋向死亡,? Apoptosis is a highly conserved cellular active death process regulated by genes, which plays an important role in the growth and development of multicellular organisms, maintaining tissue homology and other processes. The occurrence of tumors is closely related to the disorder of the apoptotic process. Apoptosis is the function of cells due to degrading enzymes. The degrading enzymes are mainly hydrolases, such as proteases and nucleases, which tend to die in the near normal cytoplasmic membrane.