Molibresib (I-BET-762)

別名:GSK525762, GSK525762A

Molibresib (I-BET-762, GSK525762, GSK525762A) 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.

Molibresib (I-BET-762)化学構造

CAS No. 1260907-17-2

サイズ 価格(税別) 在庫状況
10mM (1mL in DMSO) JPY 55500 国内在庫あり
JPY 34000 国内在庫あり
JPY 70500 国内在庫あり
JPY 145500 国内在庫あり
JPY 250500 国内在庫なし(納期7~10日)
JPY 748500 国内在庫なし(納期7~10日)

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製品安全説明書

現在のバッチを見る: 純度: 99.87%
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Molibresib (I-BET-762)関連製品

Epigenetic Reader Domain阻害剤の選択性比較

Cell Data

Cell Lines Assay Type Concentration Incubation Time 活性情報 PMID
TY82 Function assay 0.2 to 1 uM 24 hrs Inhibition of BRD4 in human TY82 cells assessed as reduction in c-Myc protein expression at 0.2 to 1 uM after 24 hrs by Western blot analysis 29525435
TY82 Function assay 0.2 to 1 uM 24 hrs Inhibition of BRD4 in human TY82 cells assessed as reduction in c-Myc mRNA expression at 0.2 to 1 uM after 24 hrs by RT-PCR analysis 29525435
TY82 or NCI-H1299 Function assay 0.2 to 1 uM 24 hrs Inhibition of BRD4 in human TY82 or NCI-H1299 cells assessed as reduction in PD-L1 protein expression at 0.2 to 1 uM after 24 hrs by Western blot analysis 29525435
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生物活性

製品説明 Molibresib (I-BET-762, GSK525762, GSK525762A) 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.
Targets
BET proteins [1]
(Cell-free assay)
35 nM
In Vitro
In vitro 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. [1] 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. [2]
Kinase Assay 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).
細胞実験 細胞株 CD4+ T cells
濃度 ~500 nM
反応時間 60–72 h
実験の流れ CD4+ T cells are isolated from lymph nodes and spleens of 10- to 12-wk old mice and activated with plate bound anti-CD3 and anti-CD28 antibodies in the presence of indicated cytokines. I-BET-762 compounds is included during the 60–72 h of initial activation. Over the course of 5 d of T-cell culture and expansion, the compounds is diluted 12-fold relative to the starting concentrations.
実験結果図 Methods Biomarkers 結果図 PMID
Growth inhibition assay Cell viability 26840085
In Vivo
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. [1] 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). [2]
動物実験 動物モデル Mouse
投与量 30 mg/kg
投与経路 i.v.
NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT03266159 Withdrawn
Solid Tumours
GlaxoSmithKline
November 27 2017 Phase 2
NCT02964507 Terminated
Neoplasms
GlaxoSmithKline
February 2 2017 Phase 1
NCT01943851 Completed
Neoplasms
GlaxoSmithKline
May 14 2014 Phase 2
NCT01587703 Completed
Carcinoma Midline
GlaxoSmithKline
March 28 2012 Phase 1

化学情報

分子量 423.9 化学式

C22H22ClN5O2

CAS No. 1260907-17-2 SDF Download Molibresib (I-BET-762) SDFをダウンロードする
Smiles CCNC(=O)CC1C2=NN=C(N2C3=C(C=C(C=C3)OC)C(=N1)C4=CC=C(C=C4)Cl)C
保管

In vitro
Batch:

DMSO : 84 mg/mL ( (198.15 mM); 吸湿したDMSOは溶解度を減少させます。新しいDMSOをご使用ください。)

Ethanol : 42 mg/mL

Water : Insoluble

モル濃度計算器

in vivo
Batch:

Add solvents to the product individually and in order.

投与溶液組成計算機
Clear solution
5%DMSO 40% 5% 50%ddH2O
4.25mg/ml (10.03mM) Taking the 1 mL working solution as an example, add 50 μL of 85 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results. 

実験計算

モル濃度計算器

質量 濃度 体積 分子量

投与溶液組成計算機(クリア溶液)

ステップ1:実験データを入力してください。(実験操作によるロスを考慮し、動物数を1匹分多くして計算・調製することを推奨します)

mg/kg g μL

ステップ2:投与溶媒の組成を入力してください。(ロット毎に適した溶解組成が異なる場合があります。詳細については弊社までお問い合わせください)

% DMSO % % Tween 80 % ddH2O
%DMSO %

計算結果:

投与溶媒濃度: mg/ml;

DMSOストック溶液調製方法: mg 試薬を μL DMSOに溶解する(濃度 mg/mL, 注:濃度が当該ロットのDMSO溶解度を超える場合はご連絡ください。 )

投与溶媒調製方法:Take μL DMSOストック溶液に μL PEG300,を加え、完全溶解後μL Tween 80,を加えて完全溶解させた後 μL ddH2O,を加え完全に溶解させます。

投与溶媒調製方法:μL DMSOストック溶液に μL Corn oil,を加え、完全溶解。

注意:1.ストック溶液に沈殿、混濁などがないことをご確認ください;
2.順番通りに溶剤を加えてください。次のステップに進む前に溶液に沈殿、混濁などがないことを確認してから加えてください。ボルテックス、ソニケーション、水浴加熱など物理的な方法で溶解を早めることは可能です。

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