生物活性
BMH-21是一新型DNA嵌入剂(DNA intercalator)，能结合rDNA并抑制RNA polymerase I的转录，不使组蛋白H2AX磷酸化。BMH-21 binds ribosomal DNA and inhibits RNA polymerase I (Pol I) transcription. Despite DNA intercalation, BMH-21 does not cause phosphorylation of H2AX, a key biomarker activated in DNA damage stress.BMH-21 inhibits RNA polymerase I (Pol I) transcription, causes the degradation of Pol I catalytic subunit RPA194, and has potent anticancer activity. BMH-21 has wide and potent antitumorigenic activity across NCI60 cancer cell lines and represses tumor growth in vivo. BMH-21 binds GC-rich sequences, which are present at a high frequency in ribosomal DNA genes, and potently and rapidly represses RNA polymerase I (Pol I) transcription. BMH-21 causes proteasome-dependent destruction of RPA194, the large catalytic subunit protein of Pol I holocomplex, and this correlates with cancer cell killing.
化学数据
| 分子量 | 360.41 |
| 分子式 | C21H20N4O2 |
| CAS号 | 896705-16-1 |
| 纯度 | >98% |
| 溶解性（25°C） | DMSO |
| 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 | U2OS osteosarcoma cells |
| 方法 | Maintaining the cells at 37 °C in a humidified atmosphere containing 5% CO2. Culturing U2OS osteosarcoma cells in DMEM supplemented with 15% fetal bovine serum. Plating cells in 96-well plates at a density of 10000 cells/well in triplicate and incubated for 48 h with the compounds. Using WST-1 cell proliferation reagent to determine viability .
|
| 浓度 | ~5 μM |
| 处理时间 | 48 hours |
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 | 2.7746 mL | 13.8731 mL | 27.7462 mL |
| 5 mM | 0.5549 mL | 2.7746 mL | 5.5492 mL |
| 10 mM | 0.2775 mL | 1.3873 mL | 2.7746 mL |
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