生物活性
Elagolix在竞争结合测定中显示出对hGnRH-R(Ki = 0.90 nM)的高亲和力和CYP3A4抑制(IC50 = 56 μM)的低亲和力。Elagolix对hGnRH-R具有高度选择性,在一组放射性配体结合试验中,对100种脱靶受体,离子通道,酶和转运蛋白,在10 μM浓度下测试其较宽的受体选择性,未观察到显着活性(抑制<50%)。
体内研究中,Elagolix在抑制猴子中的促黄体激素方面表现出良好的效果,并且在狗中表现出高的口服生物利用度。
化学数据
分子量 |
653.57 |
分子式 |
C32H29F5N3O5.Na |
CAS号 |
832720-36-2 |
纯度 |
>98% |
溶解性(25°C) |
DMSO: ≥ 85 mg/mL |
储存和运输条件 |
固体粉末: -20°C 冷藏长期储存 常温运输及临时存放 |
实验操作来自于公开的文献,仅供相同实验参考(如实验材料、目的不同,请参考其他文献)
细胞实验 |
细胞系 |
RBL-1 cells stably expressing the human cloned GnRH receptor |
方法 |
RBL-1 cells stably expressing the human cloned GnRH receptor are seeded into 96 well plates at a density of 15 000 cells per well in inositol-free DMEM containing 10% dialyzed FBS, 10 mM HEPES, 2 mM L-glutamine, 1 mM sodium pyruvate, 0.1 mM nonessential amino acids, and 50 μg/mL penicillin/streptomycin and are labeled for 48 h with 0.2 μCi myo-2-[3H]inositol. The cells are washed once in PBS and pretreated with assay buffer (140 mM NaCl, 4 mM KCl, 20 mM HEPES, 8.3 mM glucose, 1 mM MgCl2, 1 mM CaCl2, 10 mM LiCl, and 0.1% BSA) for 15-60 min at 37 °C. The cells are then stimulated with GnRH (6 nM) in the presence or absence of antagonist and incubated for 60 min at 37°C. Cells are extracted with 10 mM formic acid at 4°C for 30 min, and the lysate is loaded onto Millipore plates containing 20 μg of Dowex AG1-X8 resin. The plate is washed once in H2O and once in 60 mM ammonium formate/5 mM sodium tetraborate, and inositol phosphates are eluted with 1 M ammonium formate/0.1 M formic acid. The eluate is transferred to a Lumaplate and counted in a TopCount NXT. |
浓度 |
- |
处理时间 |
1 h |
动物实验 |
动物模型 |
Rhesus Monkey |
配制 |
water or 5% cromophore (For i.v. formulation); a sterile water solution (For oral formulation) |
剂量 |
10 and 50 mg/kg (oral); 3 and 10 mg/kg (i.v.) |
给药处理 |
p.o. or i.v. |
不同实验动物依据体表面积的等效剂量转换表(数据来源于FDA指南)
|
小鼠 |
大鼠 |
兔 |
豚鼠 |
仓鼠 |
狗 |
重量 (kg) |
0.02 |
0.15 |
1.8 |
0.4 |
0.08 |
10 |
体表面积 (m2) |
0.007 |
0.025 |
0.15 |
0.05 |
0.02 |
0.5 |
Km系数 |
3 |
6 |
12 |
8 |
5 |
20 |
动物 A (mg/kg) = 动物 B (mg/kg) × |
动物 B的Km系数 |
动物 A的Km系数 |
例如,依据体表面积折算法,将化合物用于小鼠的剂量20 mg/kg 换算成大鼠的剂量,需要将20 mg/kg 乘以小鼠的Km系数(3),再除以大鼠的Km系数(6),得到化合物用于大鼠的等效剂量为10 mg/kg。
储备液配制
以下数据基于半岛bd体育手机客户端 分子量,对于特殊半岛bd体育手机客户端 ,请参照COA中的储备液配制条件和说明进行操作。
Concentration / Solvent Volume / Mass |
1 mg |
5 mg |
10 mg |
1 mM |
1.5301 mL |
7.6503 mL |
15.3006 mL |
5 mM |
0.306 mL |
1.5301 mL |
3.0601 mL |
10 mM |
0.153 mL |
0.765 mL |
1.5301 mL |