生物活性
BIBR 1532是一种有效的,选择性的,非竞争性的端粒酶抑制剂,IC50为100 nM。在体外, BIBR 1532非竞争性抑制端粒酶活性,这种作用具有剂量依赖性,IC50为100 nM。 BIBR 1532作用于JVM13白血病细胞系,具有抗增殖效果,这种作用具有剂量依赖性,IC50为52 μM, 且作用于其他白血病细胞系,包括 Nalm-1, HL-60, 和 Jurkat具有相似结果。此外, BIBR 1532作用于急性髓细胞性白血病(AML),具有 抗增殖效果,IC50为56 μM,而不会影响正常造血干细胞的增殖能力。
化学数据
分子量 | 331.36 |
分子式 | C21H17NO3 |
CAS号 | 321674-73-1 |
纯度 | 98.33% |
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 |
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细胞系 | JVM13 cells |
方法 | Telomerase activity measurements. Telomerase activity of cell populations was determined using the TeloTaGGG polymerase chain reaction enzyme-linked immunosorbent assay (PCR ELISAPLUS) kit (Roche, Mannheim, Germany) according to the manufacturer’s protocol (telomeric repeat amplification protocol [TRAP]
assay). Heat-treated cellular lysates (85°C for 10 minutes) were used as negative controls for each sample. Samples are considered as telomerase positive if the difference in absorbance is higher than 2-fold
background activity.
WST-1 assays Cells (0.5 to 5*104) were plated as triplicates in complete RPMI 1640 medium with various concentrations of BIBR1532. After 24 to 72 hours, water-soluble tetrazolium (WST-1) (Roche) was added, which is transformed into formazan by mitochondrial reductase systems. The increase in the number of viable cells results in an increase of activity of mitochondrial dehydrogenases, leading to an increase of formazan dye formed, which was quantified by ELISA reader after 2, 3, and 4 hours of incubation. |
浓度 | 0 ~ 80 μM |
处理时间 | 24 or 72h |
动物实验 |
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动物模型 | Human MM xenograft murine model in CB 17 SCID-mice |
配制 | phosphate-buffered saline (PBS) |
剂量 | 35 mg/kg daily |
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 |
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1 mM | 3.0179 mL | 15.0893 mL | 30.1787 mL |
5 mM | 0.6036 mL | 3.0179 mL | 6.0357 mL |
10 mM | 0.3018 mL | 1.5089 mL | 3.0179 mL |