PF-5274857是一种强效选择性的 Smoothened (Smo) 拮抗剂,能够抑制 Hedgehog (Hh) 信号通路,IC50 和 Ki 分别为 5.8 nM 和 4.6 nM,且可以穿透血脑屏障。
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描述 | Smoothened (Smo) is a G-protein-coupled receptor that plays a pivotal role within the Hedgehog (HH) signaling pathway, which links to the formation of basal cell carcinoma, medulloblastoma, and other cancers. PF-5274857 is a highly selective SMO antagonist with IC50 values of 5.8 nM. In vitro, PF-5274857 specifically bound to Smo with Ki value of 4.6 nM. In addition, PF-5274857 completely inhibited Shh-induced Hh pathway activity with IC50 value of 2.7 nM measured by the transcriptional activity of Smo downstream gene Gli1 in MEF cells. In vivo, Oral administration of PF-5274857 at 1, 5, 10 and 30 mg/kg once daily for 6 days in the Ptch+/- p53+/- medulloblastoma allograft mice model with tumor group inhibition (TGI) of 39%, 80%, 119% and 133%, respectively. The above result suggested that PF-5274857 significant dose-dependent TGI and induced tumor regression at dose more than 10 mg/kg. PF-5274857 inhibited Gli1 mRNA transcription with IC50 values of 8.9 nM in the Ptch+/- p53+/- medulloblastoma allograft mice model. Oral administration of PF-5274857 at 30 mg/kg improved the survival rate in primary Ptch+/- p53-/- medulloblastoma mice. In addition, subcutaneous administration of PF-5274857 at 10 mg/kg showed approximately 40% of unbound PF527857 in the plasma was able to cross the blood-brain barrier in rats within 4 hours postdose[2]. |
计算器 | ||||
存储液制备 | ![]() |
1mg | 5mg | 10mg |
1 mM 5 mM 10 mM |
2.29mL 0.46mL 0.23mL |
11.44mL 2.29mL 1.14mL |
22.89mL 4.58mL 2.29mL |
CAS号 | 1373615-35-0 |
分子式 | C20H25ClN4O3S |
分子量 | 436.96 |
SMILES Code | O=C(N1CCN(C2=NC=C(Cl)C(C3=NC=C(C)C=C3C)=C2)CC1)CCS(=O)(C)=O |
MDL No. | MFCD22420827 |
别名 | |
运输 | 蓝冰 |
InChI Key | BBVNTTZIOTWDSV-UHFFFAOYSA-N |
Pubchem ID | 56956240 |
存储条件 |
In solvent -20°C:3-6个月-80°C:12个月 Pure form Sealed in dry, store in freezer, under -20°C |
溶解方案 |
DMSO: 120 mg/mL(274.63 mM),配合低频超声助溶,注意:DMSO长时间开封后,会吸水并导致溶解能力下降,请避免使用长期开封的DMSO 以下溶解方案都请先按照体外实验的方式配制澄清的储备液,再依次添加助溶剂: ——为保证实验结果的可靠性,澄清的储备液可以根据储存条件,适当保存;体内实验的工作液,建议现用现配,当天使用; 以下溶剂前显示的百分比是指该溶剂在终溶液中的体积占比;如在配制过程中出现沉淀、析出现象,可以通过加热和/或超声的方式助溶
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