For research use only.
Molecular Weight(MW): 178.14
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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C57/BL6 mice (5 mice/group) were intraperitoneally injected with daphnetin (DFN, 5 mg/kg) or DMSO, and then challenged with LPS (37.5 mg/kg) or saline. 16 h after LPS challenge, mice were sacrificed, and then lung and serum were collected. c, Representative photomicrographs showed H&E staining of lung tissue.
Inflammation Research, 2017, 66(7):579-589. Daphnetin purchased from Selleck.
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|Description||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.|
Daphnetin strongly inhibits not only EGF receptor-catalyzed tyrosine phosphorylation of exogenous substrate but also PKA and PKC activities.  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.  Daphnetin protects the cortical neurons against dexamethasone-induced reduction of cell viability in a dose-dependent manner.  Daphnetin inhibits the activities of endogenous or recombinant TaPRK in a specific and dose-dependent manner.  daphnetin causes a 50% inhibition (IC50) of 3H-hypoxanthine incorporation by Plasmodium falciparum at concentrations between 25 μM and 40 μM.  Daphnetin inhibits the mitogenic signalling of ERK1/ERK2. 
|In vivo||Daphnetin at 140 mg/kg significantly decreases uterine weights by 39.5%.  Two and 8 mg/kg administration of Daphnetin could improve the performance of stress mice in Morris water maze tests and forced swimming tests.  Daphnetin significantly prolongs survival of P. yoelli-infected mice. |
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
-  Yang EB, et al. Biochem Biophys Res Commun, 1999, 260(3), 682-685.
-  Jiménez-Orozco FA, et al. Eur J Pharmacol, 2011, 668(1-2), 35-41
-  Liao MJ, et al. Fundam Clin Pharmacol, 2012.
|In vitro||DMSO||35 mg/mL (196.47 mM)|
* 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.
In vivo Formulation Calculator (Clear solution)
|Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)|
|Dosage||mg/kg||Average weight of animals||g||Dosing volume per animal||ul||Number of animals|
|Step 2: Enter the in vivo formulation ()|
|% DMSO % % Tween 80 % ddH2O|
Working concentration： mg/ml；
Method for preparing DMSO master liquid: ： mg drug pre-dissolved in μL DMSO (Master liquid concentration mg/mL，)
Method for preparing in vivo formulation：Take DMSO master liquid, next addμL PEG300， mix and clarify, next addμL Tween 80，mix and clarify, next add μL ddH2O，mix and clarify.
1.Please make sure the liquid is clear before adding the next solvent.
2.Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
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Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )
* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).
Molecular Weight Calculator
Enter the chemical formula of a compound to calculate its molar mass and elemental composition:
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Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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