生物活性
Telaprevir (VX-950)是一种丙型肝炎病毒(HCV)NS3-4A丝氨酸蛋白酶抑制剂，IC50为0.354 μM。Telaprevir 作用于Con1(基因型 1b) 亚基因组HCV复制细胞，抑制丙型肝炎病毒NS3-4A丝氨酸蛋白酶,导致病毒多聚蛋白加工受抑制，且随后使病毒RNA复制，全部HCV RNA 水平和蛋白水平降低，这种作用存在时间和剂量依赖性。Telaprevir 显著促进对HCV RNA复制的抑制，温育24, 48, 72 和120小时，则IC50值分别为 0.574 μM, 0.488 μM, 0.210 μM和0.139 μM，这种作用存在时间依赖性。Telaprevir处理HCV 复制细胞，亲本 Huh-7和 HepG2细胞48小时后，对细胞没有毒性。
化学数据
| 分子量 | 679.85 |
| 分子式 | C36H53N7O6 |
| CAS号 | 402957-28-2 |
| 纯度 | >99% |
| 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 | Huh-7 cells |
| 方法 | Huh-7 cells harboring an autonomously replicating, subgenomic HCV replicon of the Con1 strain (19) were maintained in Dulbecco's modified Eagle's medium (DMEM), 10% heat-inactivated fetal bovine serum (FBS), 2 mM l-glutamine, and nonessential amino acids (JRH Biosciences, Lenexa, KS), plus 0.25 mg/ml G418 (Invitrogen, Carlsbad, CA). The subgenomic HCV replicon also encodes a neomycin phosphotransferase, which allows selective growth of HCV replicon-containing Huh-7 cells over HCV replicon-negative Huh-7 cells in the presence of G418. The VX-950 concentrations at which the HCV RNA level in the replicon cells is reduced by 50% (IC50) or by 90% (IC90) or the cell viability is reduced by 50% (CC50), were determined in HCV Con1 subgenomic replicon cells (19) using 4-parameter curve fitting (SoftMax Pro) as described previously (15, 18). Briefly, the replicon cells were incubated with compounds diluted in DMEM containing 2% FBS and 0.5% DMSO (without G418) at 37°C. Total cellular RNA was extracted using an RNeasy-96 kit (QIAGEN, Valencia, CA), and the copy number of the HCV RNA was determined in a quantitative, real-time, multiplex reverse transcription-PCR (QRT-PCR, or Taqman) assay (18). The cytotoxicity of compounds in the HCV replicon cells was measured under the same experimental settings using the tetrazolium-based cell viability assay as described before. |
| 浓度 | 0, 0.03, 0.1, 0.3, 1, 3, 10 μ M |
| 处理时间 | 48 h |
| 动物实验 |
|---|
| 动物模型 | Mouse model for HCV NS3-4A serine protease |
| 配制 | propylene glycol |
| 剂量 | 10, 25, 75, 150, or 300 mg/kg |
| 给药处理 | oral |
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 | 1.4709 mL | 7.3546 mL | 14.7091 mL |
| 5 mM | 0.2942 mL | 1.4709 mL | 2.9418 mL |
| 10 mM | 0.1471 mL | 0.7355 mL | 1.4709 mL |
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