wortmannin

Wortmannin (SL-2052) 是一种 PI3K 抑制剂 (IC50=3 nM)，具有共价性和不可逆性。Wortmannin 也是一种 PlK1 和 PlK3 的抑制剂 (IC50=5.8 48 nM)，可以阻断自噬。

SCH79797 dihydrochloride 是一种有效的特异性蛋白酶激活受体 1 (PAR1) 拮抗剂，IC50 为 70 nM，Ki 为 35 nM。SCH79797 dihydrochloride 具有抗增殖和促凋亡作用。

Phosphoinositide 3-kinase (PI3K) and mammalian target of rapamycin (mTOR) act synergistically in promoting cancer. Wortmannin is a potent inhibitor of PI3K enzymes, while rapamycin blocks mTOR Complex 1 TORC1. Wortmannin-rapamycin conjugate consists of analogs of 17-hydroxy wortmannin and rapamycin conjugated via a prodrug linker. Hydrolysis of the prodrug linker in vivo releases the inhibitors. The wortmannin-rapamycin conjugate inhibits the growth of HT-29 colon tumors and A498 renal tumors in mice better than rapamycin alone. Also, the conjugate, when given in combination with the VEGF-blocker bevacizumab, produces substantial regression of larger A498 tumors. Finally, the wortmannin-rapamycin conjugate is tolerated better than an equivalent mixture of the inhibitors.

17β-Hydroxywortmannin是一种口服活性的PI-3-kinase激酶抑制剂，其IC50值为0.5 nM，能够以IC50为10 nM抑制破骨细胞吸收，同时具备抗肿瘤活性。

LY-294002 hydrochloride (NSC 697286) 是一种合成的 PI3Kα δ β 分子抑制剂（IC50：0.5 0.57 0.97 μM，在无细胞试验中）；在溶液中比 Wortmannin 更稳定，也是自噬体形成的阻断剂。