...
首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Assessment of 25 CYP2D6 alleles found in the Chinese population on propafenone metabolism in vitro
【24h】

Assessment of 25 CYP2D6 alleles found in the Chinese population on propafenone metabolism in vitro

机译:在中国人群中发现的25个CYP2D6等位基因对普罗帕酮体外代谢的评估

获取原文
获取原文并翻译 | 示例
           

摘要

Cytochrome P450 enzyme 2D6 (CYP2D6) is an important member of the cytochrome P450 enzyme superfamily, with more than 100 CYP2D6 allelic variants being previously reported. The aim of this study was to assess the catalytic characteristics of 25 alleles (CYP2D6.1 and 24 CYP2D6 variants) and their effects on the metabolism of propafenone in vitro. Twenty-five CYP2D6 alleles were expressing in 21 Spodoptera frugiperda (Sf) insect cells, and each variant was evaluated using propafenone as the substrate. Reactions were performed at 37 degrees C with 1-100 mu mol/L propafenone for 30 min. After termination, the product 5-OH-propafenone was extracted and used for signal collection by ultra-performance liquid chromatography (UPLC). Compared with wild type CYP2D6.1, the intrinsic clearance (V-max and K-m) values of all variants were significantly altered. Three variants (CYP2D6.87, CYP2D6.90, CYP2D6.F219S) exhibited markedly increased intrinsic clearance values (129% to 165%), whereas 21 variants exhibited significantly decreased values (16% to 85%) due to increased K-m and (or) decreased V-max values. These results indicated that the majority of tested alleles had significantly altered catalytic activity towards propafenone hydroxylation in this expression system. Attention should be paid to subjects carrying these rare alleles when treated with propafenone.
机译:细胞色素P450酶2D6(CYP2D6)是细胞色素P450酶超家族的重要成员,先前已报道了100多种CYP2D6等位基因变体。这项研究的目的是评估25个等位基因(CYP2D6.1和24个CYP2D6变体)的催化特性及其对普罗帕酮在体外代谢的影响。 25个CYP2D6等位基因在21个Spodoptera frugiperda(Sf)昆虫细胞中表达,并使用普罗帕酮作为底物评估每种变体。反应在37摄氏度下与1-100μmol/ L普罗帕酮进行30分钟。终止后,提取产物5-OH-普罗帕酮,并通过超高效液相色谱(UPLC)用于信号收集。与野生型CYP2D6.1相比,所有变体的固有清除率(V-max和K-m)值均发生了显着变化。三种变体(CYP2D6.87,CYP2D6.90,CYP2D6.F219S)的内在清除率值显着增加(129%至165%),而21个变体由于Km和(或)增加而显示出明显降低的值(16%至85%)。 )降低了V-max值。这些结果表明,在该表达系统中,大多数测试的等位基因已显着改变了对普罗帕酮羟基化的催化活性。用普罗帕酮治疗时,应注意携带这些罕见等位基因的受试者。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号