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用各种OATP探针重组表达的猴子多态性有机阴离子转运多肽(OATP/SLCO1B1、1B3、2B1)的功能表征。

Functional characterization for polymorphic organic anion transporting polypeptides (OATP/SLCO1B1, 1B3, 2B1) of monkeys recombinantly expressed with various OATP probes.

作者信息

Takahashi Tsuyoshi, Uno Yasuhiro, Yamazaki Hiroshi, Kume Toshiyuki

机构信息

Mitsubishi Tanabe Pharma Corporation, Toda, Saitama, 335-8505, Japan.

Shin Nippon Biomedical Laboratories, Ltd., Kainan, Wakayama, 642-0017, Japan.

出版信息

Biopharm Drug Dispos. 2019 Feb;40(2):62-69. doi: 10.1002/bdd.2171. Epub 2019 Feb 10.

Abstract

The hepatic uptake of clinical drugs mediated by human hepatic organic anion transporting polypeptides (OATP/SLCO) has been reported extensively. In this study, hepatic uptake by recombinantly expressed monkey OATP1B1, OATP1B3 and OATP2B1 was investigated using three human OATP1B1 and OATP1B3 substrates (pitavastatin, pravastatin and rosuvastatin) and one OATP1B3 substrate (telmisartan), as the governmental drug interaction guidelines recommend, and seven reported clinical drugs. The uptake of known human probes into recombinant OATP-expressing cells was significantly greater than that of mock cells. Consequently, pitavastatin, pravastatin and rosuvastatin were suggested to be substrates of recombinant monkey OATP1B1 and OATP1B3, and telmisartan was suggested to be a substrate of recombinant monkey OATP1B3, in a manner similar to human OATPs. In contrast, atorvastatin, bosentan, etoposide, fexofenadine, fluvastatin, glibenclamide and simeprevir were broadly transported by recombinant monkey OATP1B1, OATP1B3 and OATP2B1. Furthermore, some of the 16 non-synonymous monkey OATP1B1 variants found in 64 cynomolgus and 32 rhesus monkeys mediated up to a 1.6-fold [ H]pitavastatin uptake (with low Michaelis constant values) in comparison with the wild type under the present conditions. Despite sequences of monkey recombinant OATPs not being totally reflective of those of human OATPs, our results collectively suggested that OATP1B1, OATP1B3 or OATP2B1 in monkeys could mediate roughly a similar hepatic uptake of various OATP probes. Recombinant monkey OATPs would be good experimental tools for in vitro hepatic uptake in cell systems.

摘要

人类肝脏有机阴离子转运多肽(OATP/SLCO)介导的临床药物肝脏摄取已被广泛报道。在本研究中,使用三种人类OATP1B1和OATP1B3底物(匹伐他汀、普伐他汀和瑞舒伐他汀)以及一种OATP1B3底物(替米沙坦),按照政府药物相互作用指南的建议,并使用七种已报道的临床药物,研究了重组表达的猴OATP1B1、OATP1B3和OATP2B1的肝脏摄取情况。已知人类探针在表达重组OATP的细胞中的摄取显著高于mock细胞。因此,匹伐他汀、普伐他汀和瑞舒伐他汀被认为是重组猴OATP1B1和OATP1B3的底物,替米沙坦被认为是重组猴OATP1B3的底物,其方式与人类OATP相似。相比之下,阿托伐他汀、波生坦、依托泊苷、非索非那定、氟伐他汀、格列本脲和simeprevir被重组猴OATP1B1、OATP1B3和OATP2B1广泛转运。此外,在64只食蟹猴和32只恒河猴中发现的16种非同义猴OATP1B1变体中的一些,在当前条件下与野生型相比,介导的[H]匹伐他汀摄取高达1.6倍(米氏常数较低)。尽管猴重组OATP的序列并不完全反映人类OATP的序列,但我们的结果共同表明,猴体内OATP1B1、OATP1B3或OATP2B1可以介导各种OATP探针大致相似的肝脏摄取。重组猴OATP将是细胞系统中体外肝脏摄取的良好实验工具。

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