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 |
|---|
| 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 |
|---|
| 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 |
|---|
| 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 |
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