计算溶液所需的质量、体积或浓度。
| 活性类型 | 活性值-log(M) | 作用机制 | 期刊 | 参考文献(PubMed IDs) |
|---|
,适用于对基线干扰要求严格的色谱和分析工作流程。
-80℃储存。特低温运输 。请查阅批次 COA 获取详细规格。
SDS、COA、产品数据表及规格说明书均可下载。可通过批号查询获取批次 COA。
在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
PF-5274857是hedgehog (Hh)信号通路的抑制剂,作为Smoothened (Smo)的高效选择性拮抗剂,其IC50值为5.8 nM。
作为G蛋白偶联受体,Smoothened是hedgehog信号通路的组分,从果蝇到人类皆保守。此蛋白是致畸环巴胺的分子靶点。SMO可以作为原癌基因,SMO激活突变导致hedgehog信号通路不受控制的活化和癌症。
通过检测Smo下游基因Gli的转录活性可知,PF-5274857处理MEF细胞能够完全抑制Shh诱导的Hh信号通路活性。
PF-5274857是一种有效的,选择性Smoothened(Smo)拮抗剂,抑制Hedgehog (Hh)信号通路,IC50和Ki分别为5.8 nM和4.6 nM,可以穿透血脑屏障。
Information
PF-5274857 is a potent and selectiveSmoothened (Smo)antagonist, inhibitsHedgehog(Hh) signaling withIC50andKiof 5.8 nM and 4.6 nM, respectively, and can penetrate the blood–brain barrier.
In vitro
PF-5274857 completely inhibits Shh-induced Hh pathway activity with IC50 of 2.7 nM measured by the transcriptional activity of Smo downstream gene Gli1 in MEF cells. The μ-opioid receptor is weakly inhibited by PF-5274857 with a dissociation constant of 36 μM subsequently determined in a functional assay.
In vivo
PF-5274857 shows significant dose-dependent tumor growth inhibition (TGI) and induces tumor regression at high doses(>10 mg/kg)., PF-5274857 downregulates Gli1, Gli2, Ptch1, and Ptch2 gene expression levels to various degrees with maximal effects being achieved between 6 and 12 hours post-dose (Gli1 is the most sensitive gene), whereas PF-5274857 has little effect on Smo levels. In skin tissue, downregulation of Gli1 and Gli2 is also observed with a similar time course by PF-5274857. The model-derived drug concentration for half maximal inhibition of the tumor Gli1 mRNA production rate (IC50) by PF-5274857 is determined to be 8.9 nM in the Ptch+/−p53+/− medulloblastoma allograft mice, which mathematically corresponds to tumor regression of 119% TGI after 6 days of plasma exposure at this concentration. In the Ptch+/−p53−/− medulloblastoma allograft mice, the IC50 value is estimated to be 3.5 nM, consistent with the Ptch+/−p53+/− results. PF-5274857 is also able to cross the blood–brain barrier in rats within 4 hours post-dose.
Cell Data
cell lines:SW48, Colo 201, SW480, WiDr, Colo205, RKO E6, RKO, LoVo, HCT-116, SW620, HT29, W1417, DLD-1, HCT-8, Colo 320HSR, Hep-3B, OVCAR-3, MEC-1 cells
Concentrations:50 pM- 3 μM
Incubation Time:48 hours
Powder Purity:≥97%