KRH-3955 hydrochloride T39787

Product Introduction
Bioactivity


英文名: KRH-3955 hydrochloride

描述: KRH-3955 hydrochloride is a CXCR4 antagonist with oral bioavailability. It effectively inhibits the binding of SDF-1α to CXCR4, exhibiting an IC 50 of 0.61 nM. Additionally, KRH-3955 hydrochloride displays high potency and selectivity as an inhibitor of X4 HIV-1, with an EC 50 ranging from 0.3 to 1.0 nM.

体外活性: KRH-3955 inhibits the replication of NL4-3 in activated peripheral blood mononuclear cells (PBMCs) from eight different donors with the EC 50 ranging from 0.23 to 1.3 nM[1]. KRH-3955 inhibits the infection of CD4/CXCR4 cells by these recombinant drug-resistant viruses, including viruses resistant to PIs, NRTIs, or NNRTIs, multidrug-resistant viruses and T20-resistant viruses, with the IC 50 ranging from 0.4 to 0.8 nM[1]. KRH-3955 (10-100 nM) inhibits the SDF-1α-induced increase in the intracellular Ca 2+ concentration in a dose-dependent manner[1]. KRH-3955 (0.1-1000 nM) binding sites are located in a region composed of all three extracellular loops (ECLs) of CXCR4[1]. KRH-3955 (10 nM) has a strong binding affinity for CXCR4 and a slow dissociation rate[1]. KRH-3955 inhibits MAb 12G5 binding to CXCR4 mutants, with the IC 50 ranging from 0.5 to 14.1 nM[1].

体内活性: KRH-3955 (10 mg/kg; a single p.o.) efficiently suppresses X4 HIV-1 infection in hu-PBL-SCID mice[1]. KRH-3955 (10 mg/kg; a single p.o.) exhibits moderate oral bioavailability (25.6%) and C max (86.3 ng/mL)[1]. KRH-3955 (10 mg/kg; a single i.v.) exhibits terminal elimination half-lives (99 h) due to high plasma clearance (3.9 liters/h/kg) combined with large volumes of distribution (374 liters/kg)[1]. Animal Model: C.B-17 SCID mice engrafted with human PBMCs and injected with infectious X4 HIV-1 (NL4-3)[1]Dosage: 10 mg/kg Administration: A single p.o. administration Result: Four of five mock-treated mice were infected whereas only one of five mice treated with KRH-3955 was infected. Animal Model: Male Sprague-Dawley rats[1]Dosage: 10 mg/kg (Pharmacokinetic Analysis) Administration: A single p.o. or i.v. administration Result: Well absorbed and the absolute oral bioavailability in rats was calculated to be 25.6%. The half time (T 1/2 ) of 99.0±13.1 h. Stable in human hepatic microsomes, and no significant inhibition of CYP450 liver enzymes by this compound was observed.

存储条件: Powder: -20°C for 3 years | In solvent: -80°C for 1 year

关键字: KRH3955 hydrochloride | KRH-3955 Hydrochloride | KRH 3955 Hydrochloride | KRH 3955 hydrochloride | KRH3955 Hydrochloride

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注：该产品未在中华人民共和国食品药品监督管理部门申请医疗器械注册和备案，不可用于临床诊断或治疗等相关用途