The plasma pharmacokinetic profile in CD-1 mice of a novel 18β-glycyrrhetinic acid (GA) derivative, which displays in vitro anti-cancer activity, was assessed.
This study involved an original one-step synthesis of N-(2-3-[3,5-bis(trifluoromethyl)phenyl]ureido}ethyl)-glycyrrhetinamide, (2) a compound that displays marked anti-proteasome and anti-kinase activity. The bioselectivity profile of 2 on human normal NHDF fibroblasts vs human U373 glioblastoma cells was assessed. Maximal tolerated dose (MTD) profiling of 2 was carried out in CD1 mice, and its serum pharmacokinetics were profiled using an acute intravenous administration of 40 mg/kg body weight.
Compound 2 displayed IC50 in vitro growth inhibitory concentrations of 29 and 8 μm on NHDF fibroblasts and U373 glioblastoma cells, respectively, thus a bioselectivity index of ∼4. The intravenous pharmacokinetic parameters revealed that 2 was rapidly distributed (t1/2dist of ∼3 min) but slowly eliminated (t1/2elim = ∼77 min).
This study describes an original and reliable nanoemulsion of a GA derivative with both anti-proteasome and anti-kinase properties and that should be further tested in vivo using various human xenograft or murine syngeneic tumour models with both single and chronic intravenous administration.
评估一种新型18β-甘草酸(GA)衍生物在CD-1小鼠中的血浆药代动力学特征,该衍生物在体外显示抗癌活性。
本研究涉及一种原始的N-(2-3-[3,5-双三氟甲基苯基]脲基}乙基)-甘草酸酰胺(2)的一步合成,该化合物显示出明显的抗蛋白酶和抗激酶活性。评估2在人正常NHDF成纤维细胞与人U373胶质母细胞瘤细胞上的生物选择性特征。在CD1小鼠中进行2的最大耐受剂量(MTD)分析,并使用40 mg/kg体重的急性静脉给药分析其血清药代动力学。
化合物2在NHDF成纤维细胞和U373胶质母细胞瘤细胞上显示出IC50体外生长抑制浓度分别为29和8 μm,因此生物选择性指数约为4。静脉药代动力学参数显示,2迅速分布(t1/2dist约为3分钟),但缓慢消除(t1/2elim = 约77分钟)。
本研究描述了一种原始可靠的GA衍生物纳米乳剂,具有抗蛋白酶和抗激酶特性,应进一步在体内使用各种人源异种移植物或小鼠同种肿瘤模型中进行单次和慢性静脉给药的测试。