In vitro: Treatment with EPZ020411 results in a dose-dependent decrease in H3R2 methylation in A375 human melanoma cells exogenously overexpressing PRMT6(IC50=0.637±0.241 μM). In biochemical assays EPZ020411 is over 100-fold selective for PRMT6/8/1 compared to other histone methyltransferases including four arginine methyltransferases (PRMT3, PRMT4, PRMT5, and PRMT7). The compound shows poor permeability in the parallel artificial membrane permeation assay. In vivo: EPZ020411 shows good bioavailability following subcutaneous dosing in rats making it a suitable tool for in vivo studies. Male Sprague-Dawley rats administered a single dose of EPZ020411 at 1 mg/kg by i.v. bolus show a moderate clearance (CL) of 19.7±1.0 mL/min/kg, with a volume of distribution at steady state (Vss) of 11.1±1.6 L/kg, translating to a mean terminal half-life (t1/2) of 8.54±1.43 h. Following 5 mg/kg s.c. dosing, a good bioavailability of 65.6 ± 4.3% is observed, leading to EPZ020411 unbound blood concentration remaining above the PRMT6 biochemical IC50 value for more than 12 h.
Cell Experiment | |
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Cell lines | A375 cells |
Preparation method | A375 (CRL-1619) cells are cultured in DMEM plus 10% (vol/vol) FBS. PRMT6 is cloned into BamHI and EcoRI sites of a pcDNA4 HisMAX_A plasmid. Transfection of his-tagged PRMT6 or vector control is carried out using Lipofectamine LTX and Plus reagent according to procedures recommended by the manufacturer. Cells are seeded at 200,000 cells/well in 6-well plates. The following day, the cells are concurrently transfected and treated with compound in 0.25% DMSO. Cells are incubated in the presence of increasing concentrations of compound up to 20 μM. Cell pellets are collected after 48 hours of compound treatment. |
Concentrations | 0-20 μM |
Incubation time | 48 h |
Animal Experiment | |
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Animal models | Sprague-Dawley rats |
Formulation | saline, pH 6.5 |
Dosages | 1 mg/kg |
Administration | i.v. |
Molecular Weight | 442.59 |
Formula | C25H38N4O3 |
CAS Number | 1700663-41-7 |
Solubility (25°C) | DMSO 60 mg/mL |
Storage |
Powder -20°C 3 years ; 4°C 2 years In solvent -80°C 6 months ; -20°C 1 month |
Species | Mouse | Rat | Rabbit | Guinea pig | Hamster | Dog |
Weight (kg) | 0.02 | 0.15 | 1.8 | 0.4 | 0.08 | 10 |
Body Surface Area (m2) | 0.007 | 0.025 | 0.15 | 0.05 | 0.02 | 0.5 |
Km factor | 3 | 6 | 12 | 8 | 5 | 20 |
Animal A (mg/kg) = Animal B (mg/kg) multiplied by | Animal B Km |
Animal A Km |
For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.
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