细胞对各种胞外诱因的应答反应是由胞内的信号传导通路调节的。大量事实表明 ,这种胞外因子所启动的信号传导通路的异常将导致靶细胞产生功能障碍并最终死亡。许多重要的细胞生命活动如细胞增殖、分化 ,以及死亡均与细胞信号传导密切相关。在信号转导过程中 ,蛋白质中酪氨酸的 The response of cells to various extracellular inducers is regulated by intracellular signaling pathways. A large number of facts show that the abnormalities of signal transduction pathways activated by this extracellular factor will lead to dysfunction of target cells and eventually death. Many important cell life activities such as cell proliferation, differentiation, and death are closely related to cell signaling. During signal transduction, the protein tyrosine