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受注：045-509-1970 |
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化学情報
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Synonyms | N/A | Storage (From the date of receipt) |
3 years -20°C powder 1 years -80°C in solvent |
| 化学式 | C20H25ClN4O3S |
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| 分子量 | 436.96 | CAS No. | 1373615-35-0 | |
| Solubility (25°C)* | 体外 | DMSO | 93 mg/mL (212.83 mM) | |
| Water | 93 mg/mL (212.83 mM) | |||
| Ethanol | Insoluble | |||
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* <1 mg/ml means slightly soluble or insoluble. * Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations. |
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溶剤液（一定の濃度）を調合する
生物活性
| 製品説明 | PF-5274857 is a potent and selective Smoothened (Smo) antagonist, inhibits Hedgehog (Hh) signaling with IC50 and Ki of 5.8 nM and 4.6 nM, respectively, and can penetrate the blood–brain barrier. |
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| 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. [1] |
| 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. [1] |
プロトコル(参考用のみ)
| キナーゼアッセイ | Biochemical assays | |
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| HEK293 cells overexpressing human Smo (amino acids 181-787) are grown in Dulbecco's Modified Eagle's Media (DMEM) supplemented with 10% FBS, Pen–Strep, and 0.1 mg/mL hygromycin to 90% confluence. After washing with cold Dulbecco's PBS, the cell pellet is resuspended in membrane preparation buffer (50 mM Tris-HCl, pH 7.5, 250 mM sucrose with Roche complete protease cocktail) and homogenized. The homogenate is centrifuged and the cell pellet is resuspended in assay buffer (50 mM Tris-HCl, pH 7.5, 100 mM NaCl, 25 mM MgCl2, 1 mM EDTA, and 0.1% protease-free bovine serum albumin) and homogenized in a glass tissue grinder. Total protein in the membrane preparation containing Smo is determined using the Pierce BCA protein assay. For the competitive binding assay, 100 μL of assay buffer is added to a 96-well GF/B filter plate for 10 minutes to pre-wet the filter and then removed. The following reagents are then added: 20 μL of assay buffer, 10 μL serial dilutions of compound, 20 μL of 3H-Smo antagonist (3 nM final concentration), and 50 μL of membrane preparation (40 μg total protein). The plates are incubated at room temperature for 2 hours, then washed and vacuum dried. The plates are then dried for 1 hour in a 60°C oven before the addition of 45 μL of Microscint 20 and incubated at room temperature for 30 minutes to 1 hour, then counted in a TopCount scintillation counter. The data are analyzed using GraphPad Prism software. | ||
| 細胞アッセイ | 細胞株 | Gli-Luc/MEF cells |
| 濃度 | 50 pM- 3 μM | |
| 反応時間 | 48 hours | |
| 実験の流れ | Gli-Luc/MEF cells are grown in the knockout DMEM supplemented with 10% heat-inactive FBS, 2 mM l-glutamine, and 0.55 mM β-mercaptoethanol until 90% confluence. On day 1, cells are trypsinized and seeded into white 384-well plates in 20 μL per well of OptiMEM media that is supplemented with 1% heat-inactive FBS and 1 mM sodium pyruvate at a concentration of 7,500 cells per well. Plates are incubated at 37 °C and 5% CO2 overnight. On day 2, PF-5274857 is added to the cells at a final concentration ranging from 3 μM to 50 pM at a 3-fold serial dilution followed by addition of recombinant mouse Sonic Hedgehog to a final concentration of 2 μg/mL. The cells are incubated with PF-5274857 and Shh for 48 hours at 37 °C and 5% CO2. Luciferase assays are conducted on day 4 using the Bright-Glo Luciferase Assay System. Briefly, Bright-Glo luciferase reagent (25 μL) is added to each well of the 384-well plate containing media. Plates are kept at room temperature for 5 minutes and then read on a Luminescence plate reader. The IC50 value of PF-5274857 is calculated. | |
| 動物実験 | 動物モデル | SCID-beige mice bearing primary Ptch+/−p53+/− or Ptch+/−p53−/− medulloblastoma tumor |
| 投薬量 | ~30 mg/kg | |
| 投与方法 | Oral administration | |
Selleckの高級品が、幾つかの出版された研究調査結果（以下を含む）で使われた：
| Establishment and characterization of immortalized sweat gland myoepithelial cells [ Sci Rep, 2022, 12(1):7] | PubMed: 34997030 |
| A high level of KLF12 causes folic acid-resistant neural tube defects by activating the Shh signalling pathway in mice [ Biol Reprod, 2021, ioab111] | PubMed: 34104947 |
| A novel human colon signet-ring cell carcinoma organoid line: establishment, characterization and application [ Carcinogenesis, 2020, 41(7):993-1004] | PubMed: 31740922 |
長期の保管のために-20°Cの下で製品を保ってください。
人間や獣医の診断であるか治療的な使用のためにでない。
各々の製品のための特定の保管と取扱い情報は、製品データシートの上で示されます。大部分のSelleck製品は、推薦された状況の下で安定です。製品は、推薦された保管温度と異なる温度で、時々出荷されます。長期の保管のために必要とされてそれと異なる温度で、多くの製品は、短期もので安定です。品質を維持するが、夜通しの積荷のために最も経済的な貯蔵状況を用いてあなたの送料を保存する状況の下に、製品が出荷されることを、我々は確実とします。製品の受領と同時に、製品データシートの上で貯蔵推薦に従ってください。