Catalog No.S7189 Synonyms: GSK525762, GSK525762A
Molecular Weight(MW): 423.9
I-BET-762 is an inhibitor for BET proteins with IC50 of ~35 nM in a cell-free assay, suppresses the production of proinflammatory proteins by macrophages and blocks acute inflammation, highly selective over other bromodomain-containing proteins.
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PECAPJ49 parental and cetuximab-resistant clones were treated with 100 nmol/L cetuximab ± 800 nmol/L I-BET-762(IBET) for 72 hours. Cells were stained with crystal violet and quantified as described in Materials and Methods (n = 3; *, P < 0.02). Figures are representative of three independent experiments.
Cancer Res, 2018, 78(15):4331-4343. I-BET-762 purchased from Selleck.
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Choose Selective Epigenetic Reader Domain Inhibitors
|Description||I-BET-762 is an inhibitor for BET proteins with IC50 of ~35 nM in a cell-free assay, suppresses the production of proinflammatory proteins by macrophages and blocks acute inflammation, highly selective over other bromodomain-containing proteins.|
I-BET-762 is an inhibitor for BET (bromodomain and extra terminal domain) proteins, BRD2, BRD3 and BRD4, binds to the tandem bromodomains of BET with Kd of 50.5–61.3 nM, displaces a tetra-acetylated H4 peptide prebound to tandem bromodomains of BET with IC50 of 32.5–42.5 nM in FRET analysis. I-BET-762 occupies the acetyl-lysine binding pocket of BET proteins and inhibits binding of BET proteins to acetylated histones, thus disrupts the formation of the chromatin complexes essential for expression of inflammatory genes.  I-BET-762 treatment during the first 2 d of differentiation alters CD4+ T-cell cytokine production, up-regulated expression of several antiinflammatory gene products and down-regulated expression of several proinflammatory cytokines. 
|In vivo||I-BET-762 confers protection against lipopolysaccharide-induced endotoxic shock and bacteria induced sepsisa. Single dose of I-BET applied at 1.5 h after LPS injection cures the mice. Twice-daily injections of I-BET for 2 days protects mice against death caused by sepsis.  Limited treatment with I-BET-762 exclusively during early priming inhibited the ability of Th1-differentiated 2D2 T cells to induce neuroinflammation in a mouse model of experimental autoimmune encephalomyelitis (EAE). |
Fluorescence resonance energy transfer (FRET) titrations:Fluorescence resonance energy transfer (FRET) titrations. I-BET is titrated against BRD2 (200 nM), BRD3 (100 nM) and BRD4 (50 nM) in 50 mM HEPES pH7.5, 50 mM NaCl, 0.5 mM CHAPS in the presence of tetra-acetylated Histone H4 peptide (200 nM). After equilibrating for 1 hour, the bromodomain protein : peptide interaction is detected using FRET following the addition of 2nM Europium cryptate labelled streptavidin and 10 nM XL-665-labelled anti-6His antibody in assay buffer containing 0.05% (v/v) BSA and 400 mM KF. Plates are read using an Envision Plate reader (excitation 320 nm, emission 615 nm and 665 nm).
|In vitro||DMSO||84 mg/mL (198.15 mM)|
|Ethanol||42 mg/mL warmed (99.07 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.
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Clinical Trial Information
|NCT Number||Recruitment||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT03266159||Withdrawn||Solid Tumours||GlaxoSmithKline||November 27 2017||Phase 2|
|NCT03150056||Recruiting||Solid Tumours||GlaxoSmithKline||May 31 2017||Phase 1|
|NCT02964507||Recruiting||Neoplasms||GlaxoSmithKline||February 2 2017||Phase 2|
|NCT02706535||Completed||Drug Interactions||GlaxoSmithKline||May 5 2016||Phase 1|
|NCT01943851||Recruiting||Cancer||GlaxoSmithKline||May 14 2014||Phase 1|
|NCT01587703||Active not recruiting||Carcinoma Midline||GlaxoSmithKline||March 28 2012||Phase 1|
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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