生物活性
AR-42 is a novel HDAC inhibitor with an IC50 of 0.61 μM for acute lymphoblastic leukemia (697) cell lines. In chronic lymphocytic leukemia (CLL) cells, the 48-hr LC50 of AR-42 is 0.76 μM. AR-42 produces dose- and time-dependent acetylation both of histones and tubulin, and induces caspase-dependent apoptosis that is not reduced in the presence of stromal cells. AR-42 significantly reduced leukocyte counts and/or prolonged survival in three separate mouse models of B-cell malignancy without evidence of toxicity. AR-42 has in vitro and in vivo efficacy at tolerable doses. In additon, AR-42 promoted hyperacetylation of H3, H4, and alpha-tubulin, and up-regulation of p21. Down-regulation of Kit occurred after AR-42 爐reatment via inhibition of Kit transcription.
化学数据
| 分子量 | 312.36 |
| 分子式 | C18H20N2O3 |
| CAS号 | 935881-37-1 |
| 纯度 | 99.98% |
| 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 | DU-145 |
| 方法 | Cells are exposed to varous concentrations of AR-42 for 96 hours. The medium is removed and replaced by 150 μL of 0.5 mg/mL of MTT in RPMI 1640 medium, and the cells are incubated in the CO2 incubator at 37 °C for 2 hours. Supernatants are removed from the wells, and the reduced MTT dye is solubilized with 200 μL/well of DMSO. Absorbance is determined on a plate reader at 570 nm.
|
| 浓度 | Dissolved in DMSO, final concentrations ~2.5 μM |
| 处理时间 | 96 hours |
| 动物实验 |
|---|
| 动物模型 | Intact male NCr athymic nude mice inoculated s.c. with PC-3 cells |
| 配制 | Formulated in methylcellulose/Tween 80 |
| 剂量 | ~50 mg/kg/day |
| 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 | 3.2014 mL | 16.0072 mL | 32.0143 mL |
| 5 mM | 0.6403 mL | 3.2014 mL | 6.4029 mL |
| 10 mM | 0.3201 mL | 1.6007 mL | 3.2014 mL |
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