生物活性
Ridaforolimus (Deforolimus, MK-8669)是一种选择性的mTOR抑制剂,IC50为0.2 nM;对mTOR信号通路的抑制作用及与FKBP12结合能力和Rapamycin接近。使用Deforolimus处理HT-1080细胞,抑制S6和4E-BP1磷酸化, 这种作用存在剂量依赖性,IC50分别为0.2 nM和5.6 nM, EC50分别为0.2 nM 和1.0 nM, 且导致细胞尺寸降低,G1期细胞增多,和抑制葡萄糖摄取,EC50为0.1-1 nM。Deforolimus作用于一组细胞系,具有显著抗增殖活性,EC50为0.2-2.3 nM。Deforolimus 有效且选择性抑制VEGF产量,这种作用存在剂量依赖性, EC50为~0.1 nM。
化学数据
分子量 | 990.21 |
分子式 | C53H84NO14P |
CAS号 | 572924-54-0 |
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 |
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细胞系 | HCT-116, SK-UT-1, HT-1080, SW872, MCF-7, PC-3 cell lines |
方法 | In vitro proliferation assays. Exponentially growing cell lines were plated into two 96-well plates and incubated overnight at 37°C. Twenty-four hours after plating, 1 plate (D1) was aspirated and stored at –80°C. The other plate (D4) was treated with 10-fold serial dilutions of ridaforolimus (1,000 to 0.0001 nmol/L) or vehicle (ethanol). Following 72 hours culture at 37°C, the plates were aspirated and stored at –80°C for proliferation analysis. The D1 and D4 plates were assessed simultaneously for cell growth using the CyQUANT Cell Proliferation Assay Kit (Invitrogen). Doubling time (DT) = [0.301 × (72)/log(day4/day1)]. Doublings = 72/DT. Cell growth rate (%) = doublings ridaforolimus/doublings vehicle × 100. Imax = 100 – cell growth rate (%) at the dose at which maximum inhibition is observed. Imax was used to determine the relative sensitivity of each cell line. |
浓度 | 0~1000 n M |
处理时间 | 72 h |
动物实验 |
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动物模型 | mice bearing PC-3, A549, HCT-116, MCF7, and PANC-1 tumors xenograft model |
配制 | diluted in a vehicle of 4% ethanol, 5% Tween 80, and 5% propylene glycol |
剂量 | 3 and 10 mg/kg (a) daily, 5 continuous days every other week and (b) once weekly |
给药处理 | i.p. |
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 | 1.0099 mL | 5.0494 mL | 10.0989 mL |
5 mM | 0.202 mL | 1.0099 mL | 2.0198 mL |
10 mM | 0.101 mL | 0.5049 mL | 1.0099 mL |