生物活性
Ispinesib (SB-715992)是一种有效的,特异性的,可逆的kinesin spindle protein (KSP)(纺锤体驱动蛋白)抑制剂,Kiapp为1.7 nM,对CENP-E, RabK6, MCAK, MKLP1, KHC和Kif1A没有抑制作用。Ispinesib 是有效可逆的特定KSP变构抑制剂,KSP与微管的结合性能,通过抑制ADP释放而不改变微管中KSP-ADP复合体的释放,而扰乱KSP的运动。 Ispinesib作用于一系列肿瘤细胞系, 包括Colo205, Colo201, HT-29, M5076, Madison-109,和MX-1, IC50为1.2 nM 到 9.5 nM,具有很强细胞毒性。 15 nM 和 30 nM Ispinesib作用于PC-3前列腺癌细胞, 通过调节控制凋亡,细胞增殖,细胞周期,和信号的基因表达水平,如EGFR, p27, p15, 和IL-11,而抑制细胞增殖和诱导凋亡。
化学数据
分子量 | 517.06 |
分子式 | C30H33ClN4O2 |
CAS号 | 336113-53-2 |
纯度 | >98% |
溶解性(25°C) | DMSO ≥ 60 mg/mL |
储存和运输条件 | 2-8°C, protect from light 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 |
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细胞系 | BT-474 and MDA-MB-468 cells line |
方法 | Cell lines were obtained from the American Type Culture Collection and from collections developed by Drs. Steve Ethier and Adi Gazdar. KPL4 was kindly provided by Dr J. Kurebayashi (Kawasaki Medical School, Kurashiki, Okayama, Japan). Cell culture reagents were from Cellgro-Mediatech. Cells were plated in log phase of growth in 96-well plates and treated for 72 h with ispinesib at concentrations of 3.3 × 10–5to 8.5 × 10–11mol/L. Cell growth was measured using CellTiter-Glo (Promega), and luminescence was recorded using BioTek FLx800. Data were analyzed according to the method described previously by the National Cancer Institute/NIH Developmental Therapeutics Program Human Tumor Cell Line Screen Process. The GI50 value is the drug concentration that results in 50% growth inhibition after 72 h of drug exposure relative to control. |
浓度 | 0~1000 n M |
处理时间 | 72 h |
动物实验 |
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动物模型 | MCF-7, BT-474 and MDA-MB-468 xenograft model in nude mice or SCID mice |
配制 | formulated in 10% ethanol, 10% cremophor, and 80% D5W (dextrose 5%) |
剂量 | q4d×3 schedule at 10 mg/kg in nu/nu mice or 8 mg/kg in SCID mice |
给药处理 | i.p. |
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 |
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1 mM | 1.934 mL | 9.6701 mL | 19.3401 mL |
5 mM | 0.3868 mL | 1.934 mL | 3.868 mL |
10 mM | 0.1934 mL | 0.967 mL | 1.934 mL |