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Dolutegravir

CAS No. : 1051375-16-6

MCE 国际站：Dolutegravir

产品活性：Dolutegravir (S/GSK1349572) 是一种高效、口服的 HIV 整合酶链转移 抑制剂，在 HIV-1 整合酶催化的链转移中的 IC₅₀ 值为 2.7 nM，Dolutegravir (S/GSK1349572) 抑制 HIV-1 病毒在外周血单个核细胞中的复制，IC₅₀ 为 0.51 nM。Dolutegravir (S/GSK1349572) 对 Y143R，N155H 和 G140S/Q148H 突变体也保持高效 (EC₅₀=3.6-5.8 nM)。

研究领域：Metabolic Enzyme/Protease  |  Anti-infection

作用靶点：HIV Integrase  |  HIV

In Vitro: The EC₅₀ of Dolutegravir (S/GSK1349572) against HIV-1 is 0.51 nM in PBMCs, 0.71 nM in MT-4 cells, and 2.2 nM in the PHIV assay, which uses a pseudotyped self-inactivating virus. The 50% cytotoxic concentrations (CC₅₀) for Dolutegravir in proliferating IM-9, U-937, MT-4, and Molt-4 cells are 4.8, 7.0, 14, and 15 μM, respectively. In unstimulated and stimulated PBMCs, the CC₅₀ are 189 μM and 52 μM, respectively. Based on the EC₅₀ of Dolutegravir against HIV-1 in PBMCs (i.e., 0.51 nM), this translates to a cell-based therapeutic index of at least 9,400.

In Vivo: Following a single intravenous (IV) administration of Dolutegravir, the plasma clearance is low in rats (0.23 mL/min/kg) and monkeys (2.12 mL/min/kg). The half-lives in the rat and monkey are similar, approximately 6 h, and the steady-state volume of distribution (V_SS) is low. Following oral administration, Dolutegravir is rapidly absorbed with a high oral bioavailability when administered as a solution to fasted male rats and a single monkey (75.6 and 87.0%, respectively). Dolutegravir exposure (C_max and AUC) increased with increasing dose following oral administration of a suspension to non-fasted rats up to 250 mg/kg and non-fasted monkeys up to 50 mg/kg, although the increase is less than proportional.

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