生物活性
BIIB021是一种口服有效的,全部人工合成的,小分子HSP90抑制剂,Ki和EC50分别为1.7 nM和38 nM。BIIB021 结合到Hsp90的ATP结合袋中, 干涉Hsp90伴侣功能, 导致客户蛋白降解和肿瘤生长受抑制。BIIB021抑制肿瘤细胞 (BT474, MCF-7, N87, HT29, H1650, H1299, H69和H82) 增殖, IC50为0.06-0.31 μM。BIIB021诱导Hsp90客户蛋白包括HER-2, AKT, 和Raf-1的降解,以及 正向调节Hsp70 和Hsp27。
化学数据
分子量 | 318.76 |
分子式 | C14H15ClN6O |
CAS号 | 848695-25-0 |
纯度 | 99.72% |
溶解性(25°C) | DMSO 60 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 |
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细胞系 | N87, MCF-7 and BT474 cell lines |
方法 | Cell Proliferation Assay. A modified tetrazolium salt assay was used to measure the inhibition of tumor cell growth. Cells were added to 96-well plates and propagated for 24 h before compound addition. The compound was serially diluted and added at a concentration range of 3 to 1,000 nmol/L to the plated cells. DMSO (0.03-0.003%) was included as a vehicle control. Cells were incubated in the presence of compound for 5 days. After incubation phenazine methosulfate (stock concentration 1 mg/mL) and 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (stock concentration 2 mg/mL; Promega) were mixed at a ratio of 1:20 and added to each well of a 96-well plate. Reduction of 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt gave rise to a soluble formazan product that was secreted into the culture medium. After 4 h incubation, the formazan product was quantitated spectrophotometrically at a wavelength of 490 nm. Data were acquired using SOFTmaxPRO software, and 100% viability was defined as the A490 of DMSO-treated cells stained with 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium, inner salt (the mean A490 of cells treated with DMSO at a range of 0.03-0.003%). Percent viability of each sample was calculated from the A490 values as follows: % viability = (A490 nm sample / A490 nm DMSO-treated cells × 100). The IC50 was defined as the concentration that gave rise to 50% inhibition of cell viability. |
浓度 | 3 ~ 1000 nM |
处理时间 | 5 days |
动物实验 |
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动物模型 | nude mice bearing N87 stomach carcinoma tumors xenograft model |
配制 | |
剂量 | 31, 62.5, and 125 mg/kg, once daily, from Monday to Friday, for 5 weeks |
给药处理 | orally |
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 | 3.1372 mL | 15.6858 mL | 31.3716 mL |
5 mM | 0.6274 mL | 3.1372 mL | 6.2743 mL |
10 mM | 0.3137 mL | 1.5686 mL | 3.1372 mL |