阿波利波蛋白E异型对人脑微血管内皮细胞中P-糖蛋白的丰度和功能的影响
Ethan Kreutzer1, Jennifer L Short2, Joseph A Nicolazzo3
1Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, Victoria, 3052, Australia.
Pharmaceutical research
|June 27, 2024
概括
阿波蛋白E (apoE) 异型不直接影响人脑内皮细胞中的P-糖蛋白 (P-gp) 丰度或功能. 这表明apoE可能不是阿尔茨海默病 (AD) 中改变的P-gp的原因.
科学领域:
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
- 细胞生物学 细胞生物学
背景情况:
- 阿尔茨海默氏病 (AD) 患者经常在血脑屏障 (BBB) 中表现出改变的P-糖蛋白 (P-gp) 水平,影响药物暴露.
- 阿波利波蛋白E (apoE) 和AD之间的遗传联系表明,apoE异型可能会影响BBB功能,但机制尚不清楚.
- 了解apoE如何影响P-gp对于优化AD药物治疗至关重要.
研究的目的:
- 调查不同阿波利波蛋白E (apoE) 异型对P-糖蛋白 (P-gp) 丰度和功能的直接影响.
- 为了确定apoE异型是否在人类大脑微血管内皮细胞 (hCMEC/D3) 模型中差异性地改变P-gp.
主要方法:
- 在hCMEC/D3细胞中使用western blot评估P-gp丰度.
- 在hCMEC/D3细胞中通过罗达胺123 (R123) 吸收试验评估P-gp功能.
- 暴露于重组的apoE3和apoE4的细胞,以及具有人性化的apoE异型的天体细胞条件介质 (ACM).
主要成果:
- 再组合的apoE3和apoE4并没有改变hCMEC/D3细胞中的P-gp丰度.
- 具有不同apoE异型的天体细胞受条件介质也没有对P-gp丰度产生影响.
- 罗达胺123的积累保持不变,这表明ApoE异型体对P-gp功能没有改变.
结论:
- 在研究的细胞模型中,Apolipoprotein E异型体不会直接影响P-gp的丰度或功能.
- 进一步的体内研究是必要的,以探索在散发性阿尔茨海默病中潜在的apoE异型特异性P-gp降低.
- 这些发现表明,apoE在AD相关的P-gp变化中的作用可能是间接的或取决于环境的.
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