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Catalog No. T6893Cas No. 118414-82-7
MK-886 (L 663536) is an inhibitor of leukotriene biosynthesis, inhibiting 5-lipoxygenase-activating protein (FLAP). It is also a moderately potent PPARα antagonist.
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Pack SizePriceAvailabilityQuantity
1 mg$30In Stock
2 mg$40In Stock
5 mg$64In Stock
10 mg$113In Stock
25 mg$228In Stock
50 mg$372In Stock
100 mg$597In Stock
500 mg$1,260In Stock
1 mL x 10 mM (in DMSO)$66In Stock
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Related Compound Libraries of "MK-886"

Product Introduction

MK-886 (L 663536) is an inhibitor of leukotriene biosynthesis, inhibiting 5-lipoxygenase-activating protein (FLAP). It is also a moderately potent PPARα antagonist.
In vitro
MK-886, an inhibitor of the 5-lipoxygenase-activating protein (FLAP), potently suppresses leukotriene biosynthesis in intact cells and is frequently used to define a role of the 5-lipoxygenase (EC pathway in cellular or animal models of inflammation, allergy, cancer, and cardiovascular disease. MK-886 inhibits isolated COX-1 (IC50=8 μM) and blocks the formation of the COX-1-derived products 12(S)-hydroxy-5-cis-8,10-trans-heptadecatrienoic acid (12-HHT) and thromboxane B2 in washed human platelets in response to collagen as well as from exogenous arachidonic acid (IC50=13–15 μM).Isolated COX-2 was less affected (IC50=58 μM), and in A549 cells, MK-886 (33 μM) failed to suppress COX-2-dependent 6-ketoprostaglandin (PG)F1α formation. MK-886 (10 μM) inhibits COX-1-mediated platelet aggregation induced by collagen or arachidonic acid whereas thrombin- or U-46619-induced (COX-independent) aggregation is not affected[1].
In vivo
Repeated daily i.p. injections of MK-886 results in increased GluR1 phosphorylation in brain samples obtained from the prefrontal cortex. In contrast, a single injection of MK-886 does not alter cortical GluR1 phosphorylation[2].
Kinase Assay
Enzyme assay is conducted in buffer containing 25 mM Tris, pH 8.0, 1 mM DTT, 1 mM spermine, 50 mM KCl, 0.01% Nonidet P-40, and 1 mM MgCl2. PARP reaction contains 0.1 μCi [3H]NAD+ (200 000 DPM), 1.5 μM NAD+, 150 nM biotinylated NAD+, 1 μg/mL activated calf thymus, and 1?5 nM PARP-1. Autoreactions utilizing SPA bead-based detection are carried out in 50 μL volumes in white 96-well plates. Compounds (e.g., MK-4827) are prepared in 11-point serial dilution in 96-well plate, 5 μL/well in 5% DMSO/Water (10× concentrated). Reactions are initiated by adding first 35 μL of PARP-1 enzyme in buffer and incubating for 5 min at room temperature and then 10 μL of NAD+ and DNA substrate mixture. After 3 h at room temperature, these reactions are terminated by the addition of 50 μL of streptavidin-SPA beads (2.5 mg/mL in 200 mM EDTA, pH 8). After 5 min, they are counted using a TopCount microplate scintillation counter. IC50 data is determined from inhibition curves at various substrate concentrations[1].
Cell Research
IL-1β-stimulated A549 cells (5×106/ml) are pre-incubated with MK-886 (MK, 33 μM), indomethacin (Indo, 10 μM), celecoxib (Cele, 5 μM) or vehicle (DMSO) for 15 min prior to the addition of 30 μM arachidonic acid. After 15 min at 37 °C, the amount of released 6-keto PGF1α was assessed by ELISA as described in the Materials and methods section. (Only for Reference)
AliasMK886, L 663536
Chemical Properties
Molecular Weight472.08
Cas No.118414-82-7
Storage & Solubility Information
StoragePowder: -20°C for 3 years | In solvent: -80°C for 1 year
Solubility Information
Ethanol: 2.4 mg/mL (5 mM)
DMSO: 47.2 mg/mL (100 mM)
Solution Preparation Table
1 mM2.1183 mL10.5914 mL21.1829 mL105.9143 mL
5 mM0.4237 mL2.1183 mL4.2366 mL21.1829 mL
10 mM0.2118 mL1.0591 mL2.1183 mL10.5914 mL
20 mM0.1059 mL0.5296 mL1.0591 mL5.2957 mL
50 mM0.0424 mL0.2118 mL0.4237 mL2.1183 mL
100 mM0.0212 mL0.1059 mL0.2118 mL1.0591 mL


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