细胞吸收中的立体选择性通过SLC22有机阴离子载体1,2,和3进行细胞吸收
Lukas Gebauer1, Ole Jensen1, Muhammad Rafehi1
1Institute of Clinical Pharmacology, University Medical Center Göttingen, Göttingen D-37075, Germany.
Journal of medicinal chemistry
|December 5, 2023
概括
药物载体的立体选择性对药物动力学至关重要. 这项研究表明,有机阴离子转运体 (OCT) 呈现基质特异性的立体选择性转运,影响药物行为.
科学领域:
- 药理学 药理学是指药理学的学科.
- 生物化学 生物化学
- 药物代谢和药理动力学
背景情况:
- 立体选择性在药物代谢和受体结合中至关重要,影响药物的有效性和安全性.
- 虽然已经认识到立体选择性在药物膜传输中对药物动力学的重要性,但其范围在很大程度上仍未被描述.
- 有机离子载体 (OCTs) 在许多药物的处置中发挥着重要作用.
研究的目的:
- 通过有机阴离子载体 (OCT) 1,2和3对18种基质的立体选择性运输进行研究.
- 确定通过OCT介导的运输对药物药理动力学观察到的整体立体选择性的贡献.
- 探索立体选择运输和新陈代谢之间的相互作用.
主要方法:
- 使用OCT1,OCT2和OCT3表达细胞对18种基质的立体选择性细胞吸收的表征.
- 评估输送动力学,包括显而易见的亲和力,为enantiomers.
- 细胞中OCT1和CYP2D6的同时表达,以评估运输和新陈代谢的联合作用.
主要成果:
- 在OCT2和OCT3中,多种基质具有显著的立体选择性吸收,通常具有相反的选择性模式.
- OCT1的整体立体选择性较低,但与 (S) -tamsulosin相比,对 (R) -tamsulosin的明显亲和力更高.
- 同表达研究显示,从运输和新陈代谢中产生立体选择性的附加效应,表明对药理学立体选择性的联合贡献.
结论:
- 有机阴离子载体 (OCT) 在膜运输中表现出基质特异性的立体选择性,尽管它们具有多特异性.
- 药物动力学立体选择性可能来自药物载体和代谢酶的联合立体选择性作用.
- 立体选择性的程度高度依赖于所涉及的特定基质和载体,许多OCT基质对显示最小的选择性.
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