| 规格 | 价格 | 库存 | 数量 |
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| 10 mM * 1 mL in DMSO |
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| 1mg |
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| 5mg |
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| 10mg |
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| 25mg |
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| 50mg |
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| 100mg |
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| 250mg |
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| Other Sizes |
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| 靶点 |
Caspase-4 (Kd < 0.6 nM); Caspase-1 (Ki = 0.8 nM)
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| 体外研究 (In Vitro) |
VRT-043198 是 VX-765 的口服吸收前药，对 ICE/caspase-1 和 caspase-4 具有有效抑制作用，Ki 分别为 0.8 nM 和小于 0.6 nM。此外，VRT-043198 还可阻断 PBMC 和全血中 IL-1β 的释放，IC50 值分别为 0.67 μM 和 1.9 μM。 [1]
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| 体内研究 (In Vivo) |
在胶原诱导的关节炎小鼠模型中，VX-765 (200 mg/kg) 可抑制 LPS 诱导的 IL-1β 产生约 60%，导致炎症评分呈剂量依赖性且具有统计学显着性降低，并提供有效的关节保护。 [1]在不显着影响后放电长度的情况下，VX-765 通过阻止前脑星形胶质细胞中 IL-1β 的生长来阻断大鼠体内点燃癫痫发生。 [2]在急性癫痫发作的小鼠模型中，VX-765（50 mg/kg-200 mg/kg）通过延迟首次癫痫发作的时间并平均减少癫痫发作次数及其总持续时间来产生抗惊厥作用分别为 50% 和 64%。[3]第三次注射后，VX-765 通过特异性阻断 IL-1 生物合成，显着降低遗传性失神性癫痫 (GAERS) 成年大鼠的棘波放电 (SWD) 累积持续时间和数量，从而导致平均 55%。[4]
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| 酶活实验 |
监测用对硝基苯胺或氨甲基香豆素 (AMC) 标记的合适底物的水解速率以确定酶是否被抑制：粒酶 B、Ac-IEPD-AMC； caspase-3、-7、-8 和 -9； caspase-4，Ac-WEHD-AMC； caspase-6，Ac-VEID-AMC；和 ICE/caspase-1，suc-YVAD-p-硝基苯胺。反应缓冲液含有 10 mM Tris、pH 7.5、0.1% (w/v) CHAPS、1 mM 二硫苏糖醇和 5% (v/v) 二甲亚砜，与酶和底物在 37 ° 下孵育 10 分钟C。为了提高 caspase-3、-6 和 -9 以及颗粒酶 B 的稳定性，将甘油以 8% (v/v) 的浓度添加到缓冲液中。使用荧光计测量底物水解速率。
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| 细胞实验 |
在接触 LPS 之前，用 VX-765 将 PBMC 预处理 30 分钟。
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| 动物实验 |
Mice: Belnacasan is injected intravenously as single doses (10, 21, 43, and 84 mg/kg) in a vehicle (25% Cremophor EL in water). Through the retroorbital sinus, blood samples (roughly 0.25-0.3 mL) are taken before the dose is administered as well as 0.167, 0.25, 0.5, 1, 1.5, 2, 3, 4, 6, and 8 h later. These samples are processed for plasma. The concentration of Belnacasan and VRT-043198 is measured in plasma samples using a high-performance liquid chromatography/mass spectrometry methodology. Using WinNonlin Pro, version 4.0.1, noncompartmental analysis is performed.
Rats: Male Sprague-Dawley rats weighing 250–280 g are employed. Belnacasan (25, 50, or 200 mg/kg) is dissolved in 20% Cremophor and injected intraperitoneally (i.p.) into rats once daily for three straight days. Rats are given Belnacasan on the fourth day, 45 minutes and 10 minutes before intrahippocampal injections of kainic acid. Prior to the injection of kainic acid, respective controls receive a similar vehicle injection. |
| 参考文献 |
| 分子式 |
C24H33CLN4O6
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|---|---|---|
| 分子量 |
508.99
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| 精确质量 |
508.20886
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| 元素分析 |
C, 56.63; H, 6.53; Cl, 6.97; N, 11.01; O, 18.86
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| CAS号 |
273404-37-8
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| 相关CAS号 |
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| 外观&性状 |
White to off-white solid powder
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| SMILES |
CCO[C@H]1[C@H](CC(=O)O1)NC(=O)[C@@H]2CCCN2C(=O)[C@H](C(C)(C)C)NC(=O)C3=CC(=C(C=C3)N)Cl
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| InChi Key |
SJDDOCKBXFJEJB-MOKWFATOSA-N
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| InChi Code |
InChI=1S/C24H33ClN4O6/c1-5-34-23-16(12-18(30)35-23)27-21(32)17-7-6-10-29(17)22(33)19(24(2,3)4)28-20(31)13-8-9-15(26)14(25)11-13/h8-9,11,16-17,19,23H,5-7,10,12,26H2,1-4H3,(H,27,32)(H,28,31)/t16-,17-,19+,23+/m0/s1
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| 化学名 |
(2S)-1-[(2S)-2-[(4-amino-3-chlorobenzoyl)amino]-3,3-dimethylbutanoyl]-N-[(2R,3S)-2-ethoxy-5-oxooxolan-3-yl]pyrrolidine-2-carboxamide
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| 别名 |
Belnacasan; VX 765; VX765; VX-765
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| HS Tariff Code |
2934.99.9001
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| 存储方式 |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month |
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| 运输条件 |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
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| 溶解度 (体外) |
DMSO: ~100 mg/mL (~196.5 mM)
Ethanol: ~100 mg/mL (~196.5 mM) |
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| 溶解度 (体内) |
Solubility in Formulation 1: 3.33 mg/mL (6.54 mM) in 15% Cremophor EL + 85% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution; with sonication.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (4.91 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. View More
Solubility in Formulation 3: ≥ 2.5 mg/mL (4.91 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. Solubility in Formulation 4: ≥ 2.5 mg/mL (4.91 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL corn oil and mix evenly. Solubility in Formulation 5: 2% DMSO+30% PEG 300+ddH2O: 5mg/mL Solubility in Formulation 6: 5 mg/mL (9.82 mM) in 50% PEG300 + 50% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. 1、请先配制澄清的储备液(如：用DMSO配置50 或 100 mg/mL母液(储备液)); 2、取适量母液，按从左到右的顺序依次添加助溶剂，澄清后再加入下一助溶剂。以 下列配方为例说明 (注意此配方只用于说明，并不一定代表此产品 的实际溶解配方): 10% DMSO → 40% PEG300 → 5% Tween-80 → 45% ddH2O (或 saline); 假设最终工作液的体积为 1 mL, 浓度为5 mg/mL: 取 100 μL 50 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀/澄清；向上述体系中加入50 μL Tween-80，混合均匀/澄清；然后继续加入450 μL ddH2O (或 saline)定容至 1 mL； 3、溶剂前显示的百分比是指该溶剂在最终溶液/工作液中的体积所占比例; 4、 如产品在配制过程中出现沉淀/析出，可通过加热(≤50℃)或超声的方式助溶; 5、为保证最佳实验结果，工作液请现配现用！ 6、如不确定怎么将母液配置成体内动物实验的工作液，请查看说明书或联系我们; 7、 以上所有助溶剂都可在 Invivochem.cn网站购买。 |
| 制备储备液 | 1 mg | 5 mg | 10 mg | |
| 1 mM | 1.9647 mL | 9.8234 mL | 19.6468 mL | |
| 5 mM | 0.3929 mL | 1.9647 mL | 3.9294 mL | |
| 10 mM | 0.1965 mL | 0.9823 mL | 1.9647 mL |
1、根据实验需要选择合适的溶剂配制储备液 (母液)：对于大多数产品，InvivoChem推荐用DMSO配置母液 (比如：5、10、20mM或者10、20、50 mg/mL浓度），个别水溶性高的产品可直接溶于水。产品在DMSO 、水或其他溶剂中的具体溶解度详见上”溶解度 (体外)”部分;
2、如果您找不到您想要的溶解度信息，或者很难将产品溶解在溶液中，请联系我们;
3、建议使用下列计算器进行相关计算（摩尔浓度计算器、稀释计算器、分子量计算器、重组计算器等）;
4、母液配好之后，将其分装到常规用量，并储存在-20°C或-80°C，尽量减少反复冻融循环。
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)。如该浓度超过该批次药物DMSO溶解度，请首先与我们联系。
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 ddH2O，混匀澄清。
(1) 请确保溶液澄清之后，再加入下一种溶剂 (助溶剂) 。可利用涡旋、超声或水浴加热等方法助溶；
(2) 一定要按顺序加入溶剂 (助溶剂) 。
| NCT Number | Recruitment | interventions | Conditions | Sponsor/Collaborators | Start Date | Phases |
| NCT05164120 | Completed | Drug: Placebo Drug: Belnacasan |
COVID-19 | MedStar Health | December 14, 2021 | Phase 2 |
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