Of three factors (1-methyl-3-isobutylxanthine,dexamethasone and insulin) inducing 3T3-L1 preadipocyte differentiation,only insulin was able to activate the PI3K-Akt signal cascade.

• 在三个诱导 3T3-L1 前脂肪细胞分化的激素(1-甲基-3-异丁基次黄嘌呤、地塞米松和胰岛素)中,只有胰岛素能激活 PI3K-Akt 信号通路。