替诺福韦Disoproxil延胡索酸酯是一种新的基质磷酸腺苷盒式亚科11 C成员。
文章的细节
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引用
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Tun-Yhong W, Chinpaisal C, Pamonsinlapatham P, Kaewkitichai年代
替诺福韦Disoproxil延胡索酸酯是一种新的基质磷酸腺苷盒式亚科11 C成员。
Antimicrob代理Chemother。2017年3月24日,61 (4)。pii: AAC.01725-16。doi: 10.1128 / AAC.01725-16。打印2017年4月。
- PubMed ID
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28167562 (在PubMed]
- 文摘
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替诺福韦disoproxil延胡索酸酯(TDF)核苷逆转录酶抑制剂,转换后替诺福韦(TFV),主要是消除由肾小球滤过,肾小管分泌活跃。替诺福韦是肾毒性的主要不利影响;然而,的确切机制仍然知之甚少。在这项研究中,C磷酸腺苷盒式亚科成员11 (ABCC11;多药耐药性蛋白质8 [MRP8]),在近端肾小管细胞,丰富了作为替诺福韦的流出运输车。实时聚合酶链反应(rt - PCR)和间接免疫荧光法检测被用于确定MRP8超表达连续细胞系。替诺福韦累积评估通过细胞毒性,细胞运输,和水泡吸收化验。底物特异性证实使用mk - 571,是一个MRP-specific抑制剂,和甲氨蝶呤,作为衬底。细胞内和intravesicular替诺福韦的浓度取决于液体chromatography-tandem质谱(质/ MS)。50%的细胞毒性浓度(CC50) TDF MRP8-overexpressing细胞是亲代细胞的4.78倍。 Transport assays also showed that the intracellular accumulation of tenofovir in MRP8-overexpressing cells was 55 times lower than that in parental cells and was partly reversed by MK-571. Similarly, an "inside-out" vesicular uptake assay, using Sf9 inverted membrane vesicles to allow measuring of accumulation of the substrates into the vesicles, demonstrated a higher intravesicular concentration of tenofovir in MRP8-overexpressing vesicles than in Sf9 insect control vesicles. These effects were effectively reversed by increasing concentrations of the specific inhibitor MK-571. In conclusion, tenofovir is a new substrate of the MRP8 transporter. An alteration in the activity of this efflux pump may increase the intracellular accumulation of tenofovir in proximal renal tubular cells.
beplay体育安全吗DrugBank数据引用了这篇文章
- 药物转运蛋白
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药物 转运体 类 生物 药理作用 行动 替诺福韦disoproxil 耐多药resistance-associated蛋白4 蛋白质 人类 未知的底物细节