生物活性
TG101348（Fedratinib，SAR302503）是一种选择性JAK2抑制剂，IC50为3 nM，作用于JAK2比作用于JAK1和JAK3选择性高35和334倍。TG-101348也显著抑制JAK2 V617F, Flt3和Ret，IC50分别为3 nM, 15 nM和48 nM。TG101348对密切相关的JAK3的IC50高300倍以上，对JAK1和TYK2家族抑制效果不强。TG101348抑制有JAK2V617F突变的人红细胞白血病细胞系，以及一种表达人JAK2V617F（的Ba/F3 JAK2V617F）鼠前B细胞系的增殖，IC50分别是305 nM 和270 nM。
化学数据
| 分子量 | 524.68 |
| 分子式 | C27H36N6O3S |
| CAS号 | 936091-26-8 |
| 纯度 | 99.60% |
| 溶解性（25°C） | DMSO ≥ 100 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 | EpoBa/F3 JAK2V617F, Ba/F3p210, HEL, and K562 cells |
| 方法 | XTT Assay for Cell Proliferation, Apoptosis, and DNA Laddering Assay Approximately 2 3 103 cells were plated into microtiter-plate wells in 100 ml RPMI-1640 growth media with indicated concentrations of inhibitor. Following 72 hr incubation with TG101348, 50 ml of XTT dye (Roche; Basel, Switzerland) were added to each well and incubated for 4 hr in a CO2 incubator. The colored formazan product was measured by spectrophotometry at 450 nm with correction at 650 nm. The concentration in which 50% of the effect (i.e., inhibition of proliferation) is observed (IC50) was determined using the GraphPad Prism
4.0 software. All experiments were performed in triplicate, and the results were normalized to growth of untreated cells. Induction of apoptosis of EpoBa/F3 JAK2V617F, Ba/F3p210, HEL, and K562 cells was determined by DNA fragmentation with DMSO and increasing concentrations of inhibitor. |
| 浓度 | 0~30μM |
| 处理时间 | 72h |
| 动物实验 |
|---|
| 动物模型 | The murine BM transplant model with C57BL/6 mice |
| 配制 | saline |
| 剂量 | twice daily (b.i.d.) at 60 mg/kg, 120 mg/kg from day 28 on for 42 days |
| 给药处理 | oral gavage |
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 | 1.9059 mL | 9.5296 mL | 19.0592 mL |
| 5 mM | 0.3812 mL | 1.9059 mL | 3.8118 mL |
| 10 mM | 0.1906 mL | 0.953 mL | 1.9059 mL |
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