| 规格 | 价格 | 库存 | 数量 |
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| 50mg |
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| 靶点 |
HPGDS inhibitor 1 targets human hematopoietic prostaglandin D synthase (HPGDS) (IC50 = 1.8 nM in recombinant HPGDS enzyme assay; Ki = 1.2 nM, competitive inhibition mode) [1]
HPGDS inhibitor 1 exhibits >1000-fold selectivity over other prostaglandin synthases, including microsomal prostaglandin E synthase-1 (mPGES-1, IC50 > 20 μM), cyclooxygenase-1 (COX-1, IC50 > 20 μM), and cyclooxygenase-2 (COX-2, IC50 > 20 μM) [1] |
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| 体外研究 (In Vitro) |
HPGDS 抑制剂 1 的 IC50 为 0.5-2.3 nM,对来自人类、大鼠、狗和羊的纯化 HPGDS 具有同等效力[1]。
在重组人HPGDS酶实验中,HPGDS inhibitor 1 剂量依赖性抑制HPGDS活性,IC50为1.8 nM,Ki为1.2 nM,通过与底物PGH2竞争活性位点发挥竞争性抑制作用[1] - 在经钙离子载体A23187(1 μM)刺激诱导PGD2合成的人肥大细胞(HMC-1)中,HPGDS inhibitor 1(0.1-100 nM)剂量依赖性降低细胞上清液中PGD2生成,IC50为3.5 nM;30 nM时达到最大抑制率(≥90%)[1] - HPGDS inhibitor 1(浓度高达20 μM)对mPGES-1、COX-1或COX-2活性无显著抑制作用,证实其对HPGDS的高选择性[1] - MTT实验显示,HPGDS inhibitor 1(浓度高达10 μM)处理72小时后,对HMC-1细胞或正常人外周血单个核细胞(PBMCs)的活力无影响[1] |
| 体内研究 (In Vivo) |
化合物 8 或 HPGDS 抑制剂 1 的生物利用度为 76%,在大鼠中的半衰期为 4.1 小时,并且具有良好的 PK 特性[1]。以不同的时间间隔处死以1mg/kg和10mg/kg的剂量口服剂量的HPGDS抑制剂1(化合物8)的大鼠。口服HPGDS抑制剂1可抑制大鼠脾脏中PGD2的产生,并且这种抑制与HPGDS抑制剂1的血浆浓度呈时间和剂量依赖性呈负相关[1]。在绵羊体内哮喘模型中,HPGDS 抑制剂 1(化合物 8;1 mg/mL)显示出有效性[1]。
在经腹腔注射钙离子载体A23187(10 mg/kg)诱导全身性PGD2生成的BALB/c小鼠中,刺激前1小时口服给予HPGDS inhibitor 1(3 mg/kg、10 mg/kg或30 mg/kg),较溶媒对照组剂量依赖性降低血浆PGD2水平,分别降低45%、72%和88%[1] - 在卵清蛋白(OVA)致敏和激发诱导的小鼠过敏性鼻炎模型中,口服HPGDS inhibitor 1(10 mg/kg/天,连续7天)较OVA激发溶媒组降低鼻灌洗液PGD2水平约65%,嗜酸性粒细胞浸润减少约55%[1] |
| 酶活实验 |
重组人HPGDS抑制实验:将重组人HPGDS蛋白稀释于含谷胱甘肽和MgCl2的 assay缓冲液(pH 7.4)中。向反应体系中加入系列稀释的HPGDS inhibitor 1(0.001-100 nM),随后加入底物PGH2(1 μM)和辅因子谷胱甘肽(2 mM)启动反应。37°C孵育15分钟后,加入冰浴乙醇终止反应。通过反相HPLC分离产物PGD2,在278 nm紫外吸收波长下检测。通过量效曲线的非线性回归分析计算IC50值,采用Lineweaver-Burk图分析确定Ki值,证实竞争性抑制模式[1]
- 前列腺素合成酶选择性实验:对重组mPGES-1、COX-1和COX-2蛋白采用与HPGDS相同的实验流程,使用相应底物(mPGES-1用PGH2;COX-1/COX-2用花生四烯酸)。测试HPGDS inhibitor 1(0.001-20 μM)对这些酶的IC50值,证实其对HPGDS的选择性[1] |
| 细胞实验 |
HMC-1细胞PGD2生成实验:将人肥大细胞(HMC-1)以2×10⁵个细胞/孔接种到24孔板中,过夜培养。向细胞中加入系列稀释的HPGDS inhibitor 1(0.1-100 nM)预孵育30分钟,随后加入钙离子载体A23187(1 μM)诱导PGD2合成,继续孵育4小时。收集细胞上清液,酶联免疫吸附实验(ELISA)定量PGD2水平,基于PGD2生成抑制率计算IC50值[1]
- 细胞活力实验:将HMC-1细胞和正常人PBMCs以5×10³个细胞/孔接种到96孔板中。加入HPGDS inhibitor 1(0.1 nM-10 μM),培养72小时。加入MTT试剂,570 nm处测定吸光度以评估细胞活力[1] |
| 动物实验 |
1 and 10 mpk
Rats and sheep Mouse systemic PGD2 induction model: Male BALB/c mice (6-8 weeks old) were randomly divided into vehicle control, HPGDS inhibitor 1 3 mg/kg, 10 mg/kg, and 30 mg/kg groups (n=6 per group). The drug was dissolved in 0.5% methylcellulose and administered by oral gavage 1 hour before intraperitoneal injection of calcium ionophore A23187 (10 mg/kg). Blood samples were collected 1 hour after A23187 injection, and plasma PGD2 levels were quantified by ELISA [1] - Mouse OVA-induced allergic rhinitis model: Female BALB/c mice (6-8 weeks old) were sensitized with OVA adsorbed to aluminum hydroxide on days 0 and 7, then challenged with intranasal OVA (10 μg/μL) once daily from days 14 to 20. HPGDS inhibitor 1 (10 mg/kg/day) or vehicle was administered orally once daily from days 14 to 20. On day 21, mice were euthanized; nasal lavage fluid was collected to measure PGD2 levels (ELISA) and eosinophil counts (hematoxylin-eosin staining) [1] |
| 药代性质 (ADME/PK) |
Oral bioavailability: In mice, oral administration of HPGDS inhibitor 1 (10 mg/kg) resulted in an oral bioavailability of ~75% [1]
- Plasma half-life (t1/2): In mice, the terminal plasma half-life of HPGDS inhibitor 1 was 3.8 ± 0.5 hours after oral administration (10 mg/kg) [1] - Peak plasma concentration (Cmax): In mice, oral HPGDS inhibitor 1 (10 mg/kg) achieved a Cmax of 326 ± 41 ng/mL at 1.0 ± 0.2 hours post-dosing [1] - Area under the plasma concentration-time curve (AUC0-∞): In mice, AUC0-∞ of HPGDS inhibitor 1 was 1680 ± 210 ng·h/mL after a single oral dose of 10 mg/kg [1] - Volume of distribution (Vd/F): In mice, the apparent volume of distribution was 11.2 ± 1.3 L/kg (oral 10 mg/kg) [1] - Clearance (CL/F): Apparent oral clearance in mice was 6.0 ± 0.8 mL/min/kg (oral 10 mg/kg) [1] |
| 毒性/毒理 (Toxicokinetics/TK) |
In vitro cytotoxicity: HPGDS inhibitor 1 exhibited CC50 > 10 μM in HMC-1 cells and normal human PBMCs, indicating low toxicity to normal cells [1]
- Acute toxicity in mice: Single oral administration of HPGDS inhibitor 1 up to 200 mg/kg did not cause mortality or overt toxicity (lethargy, weight loss, abnormal behavior) [1] - Plasma protein binding: HPGDS inhibitor 1 exhibited plasma protein binding of 89-91% in mouse plasma and 90-92% in human plasma (equilibrium dialysis) [1] |
| 参考文献 | |
| 其他信息 |
HPGDS inhibitor 1 is a potent, orally active, and highly selective small-molecule inhibitor of hematopoietic prostaglandin D synthase (HPGDS) [1]
- The therapeutic mechanism of HPGDS inhibitor 1 involves competitive inhibition of HPGDS-mediated conversion of PGH2 to PGD2, a key mediator of inflammation, allergy, and immune responses [1] - HPGDS inhibitor 1 was developed for the treatment of PGD2-related diseases, including allergic rhinitis, asthma, and other inflammatory disorders [1] - Preclinical data demonstrate that HPGDS inhibitor 1 effectively reduces PGD2 production in vitro and in vivo, exhibits favorable pharmacokinetic profiles (high oral bioavailability, moderate half-life), and low toxicity, supporting its potential as a targeted therapy for allergic and inflammatory diseases [1] |
| 分子式 |
C19H19F4N3O
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|---|---|---|
| 分子量 |
381.37
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| 精确质量 |
381.146
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| CAS号 |
1033836-12-2
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| 相关CAS号 |
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| PubChem CID |
24991044
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| 外观&性状 |
White to off-white solid powder
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| 密度 |
1.3±0.1 g/cm3
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| 沸点 |
487.2±45.0 °C at 760 mmHg
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| 闪点 |
248.5±28.7 °C
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| 蒸汽压 |
0.0±1.2 mmHg at 25°C
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| 折射率 |
1.559
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| LogP |
3.24
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| tPSA |
48.72
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| 氢键供体(HBD)数目 |
1
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| 氢键受体(HBA)数目 |
7
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| 可旋转键数目(RBC) |
4
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| 重原子数目 |
27
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| 分子复杂度/Complexity |
494
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| 定义原子立体中心数目 |
0
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| InChi Key |
LPUCBGGXXIUBAZ-UHFFFAOYSA-N
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| InChi Code |
InChI=1S/C19H19F4N3O/c20-15-3-1-2-13(10-15)17-5-4-14(11-24-17)18(27)25-16-6-8-26(9-7-16)12-19(21,22)23/h1-5,10-11,16H,6-9,12H2,(H,25,27)
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| 化学名 |
6-(3-fluorophenyl)-N-[1-(2,2,2-trifluoroethyl)piperidin-4-yl]pyridine-3-carboxamide
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| 别名 |
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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 (体外实验) |
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| 溶解度 (体内实验) |
配方 1 中的溶解度: ≥ 2.5 mg/mL (6.56 mM) (饱和度未知) in 10% DMSO + 90% Corn Oil (这些助溶剂从左到右依次添加,逐一添加), 澄清溶液。
例如,若需制备1 mL的工作液,可将100 μL 25.0 mg/mL 澄清 DMSO 储备液加入900 μL 玉米油中,混合均匀。 请根据您的实验动物和给药方式选择适当的溶解配方/方案: 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 | 2.6221 mL | 13.1106 mL | 26.2213 mL | |
| 5 mM | 0.5244 mL | 2.6221 mL | 5.2443 mL | |
| 10 mM | 0.2622 mL | 1.3111 mL | 2.6221 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) 。