生物活性
GSK126是一种高活性，S-腺苷-蛋氨酸竞争性EZH2甲基转移酶抑制剂，Ki为0.5 nM。GSK126 decreases global H3K27me3 levels and reactivates silenced PRC2 target genes. GSK126 effectively inhibits the proliferation of EZH2 mutant DLBCL cell lines and markedly inhibits the growth of EZH2 mutant DLBCL xenografts in mice.
化学数据
| 分子量 | 526.67 |
| 分子式 | C31H38N6O2 |
| CAS号 | 1346574-57-9 |
| 纯度 | 98.49% |
| 溶解性（25°C） | DMSO 10 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 | EZH2 wildtype or mutant B-cell lymphoma cell lines |
| 方法 | Cell proliferation assay. The optimal cell seeding was determined empirically for all cell lines by examining the growth of a wide range of seeding densities in a 384-well format to identify conditions that permitted proliferation for 6 days. Cells were then plated at the optimal seeding density 24 h before treatment (in duplicate) with a 20-point twofold dilution series of GSK126 or 0.15% DMSO. Plates were incubated for 6 days at 37℃ in 5% CO2. Cells were then lysed with CellTiter-Glo (CTG) (Promega) and chemiluminescent signal was detected with a TECAN Safire2 microplate reader. In addition, an untreated plate of cells was harvested at the time of compound addition (T0) to quantify the starting number of cells. CTG values obtained after the 6 day treatment were expressed as a percent of the T0 value and plotted against compound concentration. Data were fit with a four-parameter equation to generate a concentration response curve and the concentration of GSK126 required to inhibit 50% of growth (growth IC50) was determined. |
| 浓度 | 0~100μM |
| 处理时间 | 6 days |
| 动物实验 |
|---|
| 动物模型 | Pfeiffer or KARPAS-422 cells tumour xenograft in mice |
| 配制 | 20% captisol adjusted to pH 4–4.5 with 1 N acetic acid. |
| 剂量 | 0.2 ml per 20 g body weight |
| 给药处理 | intraperitoneally |
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 | 1.8987 mL | 9.4936 mL | 18.9872 mL |
| 5 mM | 0.3797 mL | 1.8987 mL | 3.7974 mL |
| 10 mM | 0.1899 mL | 0.9494 mL | 1.8987 mL |
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