ARV-771 is a small-molecule pan-BET degrader with Kd values of 4.7, 7.6, 7.6 nM against BRD2, BRD3 and BRD4, respectively. ARV-771 potently degrades BRD2/3/4 in 22Rv1 cells with a DC50 less than 5 nM. c-MYC protein is a downstream effector of BET proteins. Treatment with ARV-771 results in depletion of c-MYC with an IC50 of less than 1 nM. ARV-771 shows strong antiproliferative effect on 22Rv1, VCaP, and LnCaP95 cell lines.
In vivo, treatment of non castrated male Nu/Nu mice bearing AR-V7+ 22Rv1 tumor xenografts with daily subcutaneous injections of ARV-771 at 10 mg/kg for 3 d results in 37% and 76% down-regulation of BRD4 and c-MYC levels, respectively, in tumor tissue.
Cell Experiment | |
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Cell lines | 22Rv1 cells |
Preparation method | ARV-771 is dissolved in DMSO. 22Rv1 cells (5,000 cells per well) are dosed with ARV-771 serially diluted 1:3 for a 10-point dose curve for 72 h. CellTiter-Glo Luminescent Cell Viability Assay is added, and the plate is read on a luminometer. Data are analyzed and plotted using GraphPad Prism software. |
Concentrations | |
Incubation time | 72 h |
Animal Experiment | |
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Animal models | Mice bearing tumors |
Formulation | |
Dosages | (5, 10, 30, 50 mg/kg) for up to 3 wk |
Administration |
Molecular Weight | 986.64 |
Formula | C49H60ClN9O7S2 |
CAS Number | 1949837-12-0 |
Solubility (25°C) | DMSO 10 mM |
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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