生物活性
LY2510924抑制SDF-1诱导的GTP结合,Kb值为0.38 nM。LY2510924在表达内源性CXCR4的人淋巴瘤U937细胞中,抑制SDF-1诱导的细胞迁移,IC50为0.26 nM。在肿瘤细胞中,LY2510924对SDF-1刺激下产生的磷酸化ERK和Akt具有浓度依赖性抑制作用。在移植有MDA-MB-231细胞的转移性乳腺癌模型中,LY2510924阻止了肿瘤细胞向肺部的迁移/归巢过程、抑制肿瘤细胞归巢后的细胞增殖。LY2510924具有良好的体内稳定性,在临床Ⅱ期实验的推荐浓度下,LY2510924在临床前模型中半衰期为3-5小时,在体内的半衰期为9.16小时。
化学数据
分子量 | 1189.45 |
分子式 | C62H88N14O10 |
CAS号 | 1088715-84-7 |
纯度 | >99% |
溶解性(25°C) | Water 45 mg/mL DMSO 120 mg/mL |
储存和运输条件 | -20°C, sealed 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 | U937 cells |
方法 | Briefly, U937 cells were harvested and washed once with chemotaxis assay buffer prepared with 1× RPMI medium containing 10 mmol/L HEPES, pH 7.5, and 0.3% BSA. Cells were then resuspended in assay buffer at a density of 5 × 106cells/mL. The assay was performed in a 96-well ChemoTx plate (NeuroProbe). Generally, 50 μL of cell mixture with or without LY2510924 was plated on the upper chamber, and 30 μL of SDF-1α (10 ng/mL) prepared in 1× chemotaxis buffer was added to the lower chamber. The plate was then incubated for 2.5 hours at 37°C. Following the incubation, 5 μL of CellTiter 96 AQ (Promega) was added into the lower chamber. The plate was then incubated for 60 minutes at 37°C. The migrated cells were detected by measuring the absorbance at 492 nm with a Tecan Spectrafluor Plus Microplate Reader. |
浓度 | 0-10 uM |
处理时间 | 2.5 h |
动物实验 |
---|
动物模型 | female C57/BL6 mice, male Sprague-Dawley rats, male Beagle dogs, and male Cynomolgus monkeys at fasted state |
配制 | formulated in 1× PBS |
剂量 | 3 mg/kg |
给药处理 | s.c. 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
以下数据基于产品分子量,对于特殊产品,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 | 0.8407 mL | 4.2036 mL | 8.4072 mL |
5 mM | 0.1681 mL | 0.8407 mL | 1.6814 mL |
10 mM | 0.0841 mL | 0.4204 mL | 0.8407 mL |