腺苷酸环化酶(Adenyl cyclase“Ac”)为细胞膜标志酶,它与细胞外特异受体偶联构成外部信息的细胞内放大器,通过使细胞内ATP生成CAMP将外部信息在细胞内表达。实验用腹水型白血病细胞(L7811)和网状瘤细胞(SRC),观察体外经~((?)0)CoΥ线0.5、1.0Gy和1.5Gy照射后,瘤细胞内CAMP水平和质膜AC活力变化的规律,研究辐射对肿瘤细胞通讯系统的影响。 Adenyl cyclase (Ac) is a cell membrane marker enzyme, which is coupled to an extracellular specific receptor to constitute an intracellular amplifier of external information. By causing intracellular ATP to generate CAMP, external information is expressed in the cell. Ascites leukemia cells (L7811) and reticulonoma cells (SRC) were used in the experiment to observe intracellular CAMP levels and plasma membrane AC activity after irradiation with 0.5, 1.0 Gy, and 1.5 Gy of the ((?)0) Co Υ line in vitro. The law of change studies the effect of radiation on the tumor cell communication system.