It was found that:(1) the activation of 5 HT 2 receptor coupled to IAP insensitive G proteins increases intracellular DAG formation through the activation of phospholipase C(PLC).

• 发现：（1）5－HT激活与非胰岛激活蛋白（IAP）敏感型G蛋白偶联的5－HT2受体亚型，激活磷脂酶C（PLC），增加甘油二酯（DAG）的生成。