(E/Z)-Zotiraciclib ((E/Z)-TG02) is a potent inhibitor of CDK2, JAK2, and FLT3 for the treatment of cancer, with IC50s of 13, 73, and 56 nM for CDK2, JAK2 and FLT3, respectively.
IC50&Target
CDK2
13 nM (IC50)
JAK2
73 nM (IC50)
FLT3
56 nM (IC50)
体外研究
(E/Z)-Zotiraciclib has a highly novel kinase inhibitory spectrum inhibiting 17 kinases from a panel of 63, 11 of which are CDK/JAK/FLT family members. The others, Lck, Fyn, Fms, TYRO3, ERK5, and p38δ, are implicated in inflammatory and proliferative processes. Human CYP1A2, 3A4, 2C9, and 2C19 isoforms are not inhibited by (E/Z)-Zotiraciclib at the highest tested concentration of 25 μM, but (E/Z)-Zotiraciclib inhibits CYP2D6 with IC50=0.95 μM, approximately at the plasma Cmax observed at the maximum tolerated dose. (E/Z)-Zotiraciclib inhibits cell proliferation concentrations in HCT-116 (IC50=0.079 μM) and HL-60 (IC50=0.059 μM). (E/Z)-Zotiraciclib is a novel small molecule potent CDK/JAK2/FLT3 inhibitor. (E/Z)-Zotiraciclib is mainly metabolized by CYP3A4 and CY1A2 in vitro. (E/Z)-Zotiraciclib does not inhibit any of the major human CYPs in vitro except CYP2D6 (IC50=1 μM). (E/Z)-Zotiraciclib does not significantly induce CYP1A and CYP3A4 in human hepatocytes in vitro.
体内研究
Treatment with (E/Z)-Zotiraciclib at 75 mg/kg po q.d. 3×/week significantly inhibits the growth of tumors with a mean TGI of 82%, while the lower dose of 50 mg/kg po 3×/week is marginally effective. Treatment with (E/Z)-Zotiraciclib using either regime significantly inhibits the growth of tumors with mean TGIs of 42% and 63% for the oral and ip delivery methods, respectively. In pharmacokinetic studies (E/Z)-Zotiraciclib shows moderate to high systemic clearance (relative to liver blood flow), high volume of distribution (>0.6 L/kg), oral bioavailability of 24%, ~4 and 37% in mice, rats and dogs, respectively; and extensive tissue distribution in mice.
分子式
C23H24N4O
分子量
372.46
CAS号
937270-47-8
运输条件
Room temperature in continental US; may vary elsewhere.
储存方式
Powder
-20°C
3 years
4°C
2 years
In solvent
-80°C
6 months
-20°C
1 month
溶解性数据
In Vitro:
DMSO : 26.5 mg/mL (71.15 mM; Need ultrasonic and warming)