iBET-BD2
(Synonyms: iBET-BD2) 目录号 : GC48548
A BD2 bromodomain inhibitor
Cas No.:2474876-09-8
Sample solution is provided at 25 µL, 10mM.
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Quality Control & SDS
- View current batch:
- Purity: >98.00%
- COA (Certificate Of Analysis)
- SDS (Safety Data Sheet)
- Datasheet
iBET-BD2 is an inhibitor of the bromodomain and extra-terminal domain (BET) family protein bromodomain 2 (BD2).1 It inhibits BD2 in bromodomain-containing protein 2 (BRD2), BRD3, BRD4, and BRDT (IC50s = 264, 98, 49, and 214 nM, respectively) and is selective for BD2 over BD1 (IC50s = 10.96, 36.31, 70.55, and >50.11 µM for BRD2, BRD3, BRD4, and BDT, respectively) in a time-resolved FRET (TR-FRET) assay. iBET-BD2 (1 µM) inhibits IFN-γ-induced protein expression of MHC class I in K562 cells. It reduces the production of anti-KLH IgM antibodies in mice immunized with keyhole limpet hemocyanin (KLH) when administered at a dose of 40 mg/kg.
1.Gilan, O., Rioja, I., Knezevic, K., et al.Selective targeting of BD1 and BD2 of the BET proteins in cancer and immuno-inflammationScience368(6489)387-394(2020)
| Cas No. | 2474876-09-8 | SDF | |
| 别名 | iBET-BD2 | ||
| Canonical SMILES | O[C@H]1CC[C@H](NC(C2=CC(F)=C(NC(C)=O)C(O[C@@H](C)C3=CC=CC=C3)=C2)=O)CC1 | ||
| 分子式 | C23H27FN2O4 | 分子量 | 414.5 |
| 溶解度 | DMSO: soluble | 储存条件 | -20°C |
| General tips | 请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。 储备液的保存方式和期限：-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。 为了提高溶解度，请将管子加热至37℃，然后在超声波浴中震荡一段时间。 |
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| Shipping Condition | 评估样品解决方案：配备蓝冰进行发货。所有其他可用尺寸：配备RT，或根据请求配备蓝冰。 | ||
| 制备储备液 | |||
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1 mg | 5 mg | 10 mg |
| 1 mM | 2.4125 mL | 12.0627 mL | 24.1255 mL |
| 5 mM | 0.4825 mL | 2.4125 mL | 4.8251 mL |
| 10 mM | 0.2413 mL | 1.2063 mL | 2.4125 mL |
| 第一步：请输入基本实验信息（考虑到实验过程中的损耗，建议多配一只动物的药量） | ||||||||||
| 给药剂量 | mg/kg |  |
动物平均体重 | g | |
每只动物给药体积 | ul | |
动物数量 | 只 |
| 第二步：请输入动物体内配方组成（配方适用于不溶于水的药物；不同批次药物配方比例不同，请联系GLPBIO为您提供正确的澄清溶液配方） | ||||||||||
| % DMSO % % Tween 80 % saline | ||||||||||
| 计算重置 | ||||||||||
计算结果:
工作液浓度： mg/ml；
DMSO母液配制方法： mg 药物溶于 μL DMSO溶液（母液浓度 mg/mL，
体内配方配制方法：取 μL DMSO母液，加入 μL PEG300，混匀澄清后加入μL Tween 80，混匀澄清后加入 μL saline，混匀澄清。
1. 首先保证母液是澄清的；
2.
一定要按照顺序依次将溶剂加入，进行下一步操作之前必须保证上一步操作得到的是澄清的溶液，可采用涡旋、超声或水浴加热等物理方法助溶。
3. 以上所有助溶剂都可在 GlpBio 网站选购。
Selective inhibitors of bromodomain BD1 and BD2 of BET proteins modulate radiation-induced profibrotic fibroblast responses
Int J Cancer 2022 Jul 15;151(2):275-286.PMID:35239184DOI:10.1002/ijc.33989.
Radiotherapy can induce various adverse effects including fibrosis in cancer patients. Radiation-induced aberrant expression of profibrotic genes has been associated with dysregulated epigenetic mechanisms. Pan-BET (bromodomain and extraterminal domain) inhibitors, such as JQ1 and I-BET151, have been reported to attenuate the profibrotic response after irradiation. Despite their profound preclinical efficacy, the clinical utility of pan-inhibitors is limited due to observed cytotoxicicities. Recently, inhibitors were developed that selectively target the first (BD1) and second (BD2) bromodomain of the BET proteins (iBET-BD1 [GSK778] and iBET-BD2 [GSK046]). Here, their potential to attenuate radiation-induced fibroblast activation with low-toxicity was investigated. Our results indicated that cell proliferation and cell cycle progression in fibroblasts from BJ cells and six donors were reduced when treated with I-BET151 and iBET-BD1, but not with iBET-BD2. After irradiation, induction of DGKA and profibrotic markers, especially COL1A1 and ACTA2, was attenuated with all BET inhibitors. H3K27ac enrichment was similar at the DGKA enhancer region after I-BET151 treatment and irradiation, but was reduced at the COL1A1 transcription start site and the ACTA2 enhancer site. iBET-BD2 did not change H3K27ac levels in these regions. BRD4 occupancy at these regions was not altered by any of the compounds. Cell migration activity was measured as a characteristic independent of extracellular matrix production and was unchanged in fibroblasts after irradiation and BET inhibitor-treatment. In conclusion, iBET-BD2 efficiently suppressed radiation-induced expression of DGKA and profibrotic markers without showing cytotoxicity. Thus BD2-selective targeting is a promising new therapeutic avenue for further investigations to prevent or attenuate radiotherapy-induced fibrosis.
Design and Synthesis of a Highly Selective and In Vivo-Capable Inhibitor of the Second Bromodomain of the Bromodomain and Extra Terminal Domain Family of Proteins
J Med Chem 2020 Sep 10;63(17):9070-9092.PMID:32691591DOI:10.1021/acs.jmedchem.0c00605.
Pan-bromodomain and extra terminal domain (BET) inhibitors interact equipotently with the eight bromodomains of the BET family of proteins and have shown profound efficacy in a number of in vitro phenotypic assays and in vivo pre-clinical models in inflammation or oncology. A number of these inhibitors have progressed to the clinic where pharmacology-driven adverse events have been reported. To better understand the contribution of each domain to their efficacy and improve their safety profile, selective inhibitors are required. This article discloses the profile of GSK046, also known as iBET-BD2, a highly selective inhibitor of the second bromodomains of the BET proteins that has undergone extensive pre-clinical in vitro and in vivo characterization.