Onatasertib (CC-223) 是一种口服有效的 mTOR 激酶抑制剂，抑制 mTOR 激酶，IC₅₀ 为 16 nM。Onatasertib 抑制 mTORC1 和 mTORC2。

Onatasertib (CC-223) is a potent, selective, and orally bioavailable inhibitor of mTOR kinase, with an IC 50 value for mTOR kinase of 16 nM. Onatasertib inhibits both mTORC1 and mTORC2.

Solid

mTOR 16 nM (IC50) mTORC1

Onatasertib is a potent, selective, and orally bioavailable inhibitor of mTOR kinase, demonstrating inhibition of mTORC1 (pS6RP and p4EBP1) and mTORC2 [pAKT(S473)] in cellular systems. Onatasertib is selective for mTOR kinase with >200-fold selectivity over the related PI3K-α (IC50=4.0 μM). Of the PI3K related kinases tested, Onatasertib shows no significant inhibition of ATR or SMG1 and inhibits DNA-PK with an IC50 value of 0.84 μM. When screened in a single-point assay against a commercially available panel of 246 kinases, only three kinases other than mTOR are inhibited >80% at 10 μM by Onatasertib. Upon follow-up IC50 value determination, only two are inhibited by Onatasertib with IC50 values below 1 μM; FLT4 (0.651 μM) and cFMS (0.028 μM). The exquisite kinase selectivity of Onatasertib is confirmed upon evaluation in cell

The antitumor activity of Onatasertib in the PC-3 xenograft model is determined using a number of dosing paradigms. Onatasertib significantly inhibits PC-3 tumor growth in a dose- and schedule-dependent manner. Dosing at 10 or 25 mg/kg, once daily, results in 46% (P<0.001) and 87% (P<0.001) reduction in tumor volume, respectively. Similar dose dependency is observed with twice-daily dosing at 5 or 10 mg/kg, corresponding to 65% (P<0.001) and 80% (P<0.001) tumor volume reductions. All dose levels are tolerated in the once-daily and twice-daily dosing studies, with only the 25 mg/kg/d group showing any significant body weight loss. These mice lost approximately 10% of their initial body weight after 3 weeks of dosing. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years；4°C 2 years

[1]. Mortensen DS, et al. CC-223, a Potent and Selective Inhibitor of mTOR Kinase: In Vitro and In Vivo Characterization. Mol Cancer Ther. 2015 Jun;14(6):1295-305.

In Vitro: DMSO : ≥ 27 mg/mL (67.93 mM)配制储备液