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Daphnetin
Daphnetin, a natural coumarin derivative, is a protein kinase inhibitor, inhibits EGFR, PKA and PKC with IC50 of 7.67 μM, 9.33 μM and 25.01 μM, respectively, also known to exhibit anti-inflammatory and anti-oxidant activities.
CAS No. 486-35-1
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Daphnetin関連製品
シグナル伝達経路
EGFR阻害剤の選択性比較
生物活性
| 製品説明 | Daphnetin, a natural coumarin derivative, is a protein kinase inhibitor, inhibits EGFR, PKA and PKC with IC50 of 7.67 μM, 9.33 μM and 25.01 μM, respectively, also known to exhibit anti-inflammatory and anti-oxidant activities. | ||||||
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| Targets |
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| In Vitro | ||||
| In vitro | Daphnetin strongly inhibits not only EGF receptor-catalyzed tyrosine phosphorylation of exogenous substrate but also PKA and PKC activities. [1] Daphnetin inhibits MCF-7 estrogen-responsive human carcinoma cell line at 24-hour exposure with IC50 of 73 μM. Daphnetin reduces the level of cyclin D1 even at 50 μM. [2] Daphnetin protects the cortical neurons against dexamethasone-induced reduction of cell viability in a dose-dependent manner. [3] Daphnetin inhibits the activities of endogenous or recombinant TaPRK in a specific and dose-dependent manner. [4] daphnetin causes a 50% inhibition (IC50) of 3H-hypoxanthine incorporation by Plasmodium falciparum at concentrations between 25 μM and 40 μM. [5] Daphnetin inhibits the mitogenic signalling of ERK1/ERK2. [6] | |||
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| Kinase Assay | Assay of protein kinase C (PKC) and cAMP-dependent protein kinase (PKA) activities. | |||
| PKC and PKA activities are detected. Briefly, 5 mL of PKC or PKA is mixed with 5 mL of lipid preparation containing 100 mM phorbol 12-myristate 13-acetate, 2.8 mg/mL phosphatidyl serine, and Triton X-100 mixed micelles for PKC assay or 5 mL of 40 mM cAMP in 50 mM Tris-HCl, pH 7.5, for PKA assay, and 5 mL of daphnetin. The reaction is started by adding 10 mL of PKC substrate solution containing 250 mM acetylated myelin basic protein, 100 mM ATP, 5 mM CaCl2, 10 mM MgCl2, 20 mM Tris-HCl, pH 7.5, or 10 mL of PKA substrate solution containing 200 mM Kemptide, 400 mM ATP, 40 mM MgCl2, 1 mg/mL BSA, 50 mM Tris-HCl, pH 7.5, and 20-25 mCi/mL[g-32P] ATP. After incubation at 25 °C for 5 minutes, 20 mL of each mixture is spotted on a piece of phosphocellulose disc which is immediately put into 1% H3PO4. After free [g-32P] ATP on the discs is removed, the peptide-incorporated 32P on the discs is counted in a scintillation counte | ||||
| 細胞実験 | 細胞株 | MCF-7 cells | ||
| 濃度 | 12.5 μM, 25 μM, 50 μM, 100 μM, 200 μM | |||
| 反応時間 | 24 hours, 48 hours, and 72 hours | |||
| 実験の流れ | The cytostatic effect of Daphnetin tested on the MCF-7 tumor cells is estimated using the microculture MTT assay. The assay is based on the reduction of soluble tetrazolium salt by mitochondria of viable cells. The reduced product, an insoluble purple-colored formazan, is dissolved in dimethyl sulfoxide and measured spectrophotometrically (570 nm). The amount of formazan formed is proportional to the number of viable cells. Cells (3 × 103) are seeded in each of the 96 microplate wells in a 200 μL medium containing the corresponding concentration of daphnetin. Daphnetin is tested at five concentrations (12.5 μM, 25 μM, 50 μM, 100 μM, 200 μM). After 24-hour, 48-hour, and 72-hour exposure, the percentage of proliferative inhibition of treated cells is estimated against the solvent-treated control cells (PI% = [(T/C) − 1] × 100). PI = proliferation inhibition; T = treated, C = control. IC50 is calculated from the least square concentration-response regressions. | |||
| In Vivo | ||
| In Vivo | Daphnetin at 140 mg/kg significantly decreases uterine weights by 39.5%. [2] Two and 8 mg/kg administration of Daphnetin could improve the performance of stress mice in Morris water maze tests and forced swimming tests. [3] Daphnetin significantly prolongs survival of P. yoelli-infected mice. [5] | |
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| 動物実験 | 動物モデル | Immature CD1 (Im) female mice |
| 投与量 | 35 mg/kg, 70 mg/kg, and 140 mg/kg | |
| 投与経路 | Subcutaneously | |
化学情報
| 分子量 | 178.14 | 化学式 | C9H6O4 |
| CAS No. | 486-35-1 | SDF | Download Daphnetin SDFをダウンロードする |
| Smiles | C1=CC(=C(C2=C1C=CC(=O)O2)O)O | ||
| 保管 | |||
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In vitro |
DMSO : 36 mg/mL ( (202.08 mM)； 吸湿したDMSOは溶解度を減少させます。新しいDMSOをご使用ください。) Water : Insoluble Ethanol : Insoluble |
モル濃度計算器 |
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in vivo Add solvents to the product individually and in order. |
投与溶液組成計算機 | ||||
実験計算
投与溶液組成計算機(クリア溶液)
ステップ１：実験データを入力してください。（実験操作によるロスを考慮し、動物数を1匹分多くして計算・調製することを推奨します）
mg/kg
g
μL
匹
ステップ２：投与溶媒の組成を入力してください。（ロット毎に適した溶解組成が異なる場合があります。詳細については弊社までお問い合わせください）
% DMSO
%
% Tween 80
% ddH2O
%DMSO
%
計算結果：
投与溶媒濃度： mg/ml;
DMSOストック溶液調製方法： mg 試薬を μL DMSOに溶解する（濃度 mg/mL, 注：濃度が当該ロットのDMSO溶解度を超える場合はご連絡ください。 )
投与溶媒調製方法：Take μL DMSOストック溶液に μL PEG300，を加え、完全溶解後μL Tween 80，を加えて完全溶解させた後 μL ddH2O，を加え完全に溶解させます。
投与溶媒調製方法：μL DMSOストック溶液に μL Corn oil，を加え、完全溶解。
注意：１.ストック溶液に沈殿、混濁などがないことをご確認ください；
２.順番通りに溶剤を加えてください。次のステップに進む前に溶液に沈殿、混濁などがないことを確認してから加えてください。ボルテックス、ソニケーション、水浴加熱など物理的な方法で溶解を早めることは可能です。
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