胆红素glucuronidation之间的相关性和estradiol-3-gluronidation模型UDP-glucuronosyltransferase 1 a1基质/抑制剂的存在。
文章的细节
-
引用
-
周J,特雷西TS, Remmel RP
胆红素glucuronidation之间的相关性和estradiol-3-gluronidation模型UDP-glucuronosyltransferase 1 a1基质/抑制剂的存在。
药物金属底座Dispos。2011年2月,39 (2):322 - 9。doi: 10.1124 / dmd.110.035030。Epub 2010年10月28日。
- PubMed ID
-
21030469 (在PubMed]
- 文摘
-
抑制UDP-glucuronosyltransferase (UGT), 1 a1-catalyzed胆红素glucuronidation药物化合物可能潜在的临床问题。然而,在药物发现和开发设置,胆红素小于理想的体外调查评估潜在的抑制胆红素glucuronidation的化学实体。在某种程度上,这是由于胆红素的倾向photodegrade及其代谢物的不稳定。为此,estradiol-3-glucuronidation的效用作为交互的代理体外预测与胆红素评估。胆红素的glucuronidation动力学和雌二醇仔细具有重组UGT1A1表示293年人类胚胎肾细胞。与先前的报道一致,estradiol-3-glucuronidation显示s形动力学,而胆红素glucuronidation表现出典型的双曲动力学。这两种化合物也相互抑制的新陈代谢。16 UGT1A1基质/抑制剂进行评估作为效应器的反应。14个化合物抑制胆红素和雌二醇glucuronidation。然而,两种化合物(乙炔雌二醇和黄素)展出混合效果(estradiol-3-glucuronidation浓度激活和抑制),而胆红素glucuronidation被两种化合物抑制。 In addition, 7-ethyl-10-hydroxycamptothecin, a substrate of UGT1A1 (reported K(m) = 24 muM) seemed to be a weak inhibitor of bilirubin glucuronidation (IC(50) = 356.4 muM) but a partial inhibitor of estradiol-3-glucuronidation. The IC(50) values of the inhibitors against estradiol-3-glucuronidation were strongly correlated with IC(50) values against bilirubin glucuronidation, resulting in an R(2) value of 0.9604 (activator excluded) or 0.8287 (activator included). Thus, estradiol-3-glucuronidation can serve as a good surrogate for predicting inhibition of bilirubin glucuronidation with the caveat that occasionally compounds may demonstrate activation of estradiol-3-glucuronidation.
DrugBank数据引用了这篇文章
- 药物酶
-
药物 酶 类 生物 药理作用 行动 雌二醇 UDP-glucuronosyltransferase 1 - 1 蛋白质 人类 未知的底物细节