在药物与药物相互作用中,Everolimus诱导的ABCB1下调的参与
Yuko Nakayama1, Aya Ino2, Kazuhiro Yamamoto3
1Department of Clinical Pharmaceutics, Faculty of Pharmaceutical Sciences, Himeji Dokkyo University, Himeji 670-8524, Japan.
持续暴露于mTOR抑制剂everolimus,抑制了肠道的ABCB1和ABCG2运输体. 这一发现表明,在长期癌症治疗期间,潜在的药物相互作用会影响口服生物可用性.
科学领域:
- 药理学 药理学是指药理学的学科.
- 细胞生物学 细胞生物学
- 胃肠道生理学 胃肠道生理学
背景情况:
- 埃弗罗利斯是一种口服的mTOR抑制剂,用于癌症和移植.
- 长期使用everolimus引起了人们对影响胃肠道吸收和生物可用性的药物相互作用的担忧.
- 埃弗罗利莫斯对肠道药物运输体的影响在很大程度上仍未知.
研究的目的:
- 在肠道细胞模型中研究持续暴露于Everolimus对ATP结合盒 (ABC) 载体ABCB1和ABCG2的影响.
- 为了确定Everolimus是否会改变这些关键药物载体的表达和功能.
主要方法:
- 确立了Caco-2肠道细胞亚系 (Caco/EV) 与持续暴露于everolimus.
- 使用罗达胺123.3评估细胞活力,mRNA表达ABCB1和ABCG2,以及ABCB1的运输活性.
- 确定对帕克利塔塞尔和西斯的药物敏感性 (IC50值).
主要成果:
- 与对照 Caco-2 细胞相比,Caco/EV 细胞对恒大的抗性是 14 倍的.
- 在Caco/EV细胞中对ABCB1和ABCG2基质 (paclitaxel,7-ethyl-10-hydroxycamptothecin) 的敏感性增加.
- 减少了ABCB1和ABCG2的mRNA水平,并在Caco/EV细胞中增加了Rhodamine 123的积累,这表明输送器功能受到了抑制.
结论:
- 持续暴露于Everolimus会抑制肠道ABCB1和ABCG2转运体的表达和功能.
- 这种抑制可能导致显著的药物相互作用,改变口服同时服用药物的生物可用性.
- 需要进一步的研究,以阐明这些发现对接受everolimus治疗的患者的临床影响.
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