OTX015 （MK 8628/Birabresib）
Molecular Weight(MW): 491.99
OTX015 is a potent BET bromodomain inhibitor with EC50 ranging from 10 to 19 nM for BRD2, BRD3, and BRD4 in cell-free assays. Phase 1.
Cited by 29 Publications
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|Description||OTX015 is a potent BET bromodomain inhibitor with EC50 ranging from 10 to 19 nM for BRD2, BRD3, and BRD4 in cell-free assays. Phase 1.|
|Features||Orally bioavailable BRD2/3/4-selective inhibitor that has been tested in Phase I clinical trials for treatment of Haematological Malignancies.|
OTX015 inhibits the binding of BRD2, BRD3, and BRD4 to AcH4 with IC50 ranging from 92 to 112 nM, and inhibits the growth of a variety of human cancer cell lines with GI50 ranging from 60 to 200 nM.  OTX015 results in rapid down-regulation of c-MYC expression, and show the synergistic anti-proliferative effects in combination with ALK inhibitors in ALKpos ALCL cell lines. 
|In vivo||OTX015 (p.o.) significantly inhibits the growth of Ty82 BRD-NUT midline carcinoma tumors in nude mice by 79% at 100 mg/kg qd and 61% at 10 mg/kg bid, respectively. |
TR-FRET Assay :To assess binding of OTX015 to BRD2, BRD3, and BRD4, BRD-expressing CHO cell lysate (from CHO cells transfected with expression plasmids for Flag-tagged BRD2, BRD3, or BRD4 or vector alone), europium-conjugated anti-Flag antibody, XL-665-conjugated streptavidin, and biotinylated OTX015 are incubated at room temperature for 0.2 to 2 h. Fluorescence is measured by TR-FRET using an EnVision 2103 Multilabel Reader and EC50 for binding is calculated by nonlinear regression using PRISM version 5.02.
|In vitro||DMSO||98 mg/mL (199.19 mM)|
|Ethanol||98 mg/mL (199.19 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+5% Tween 80+ddH2O
For best results, use promptly after mixing.
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