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在小鼠血脑脊液屏障中P-gp和Bcrp的功能评估

Austin Sun¹, Joanne Wang²

¹Department of Pharmaceutics, University of Washington, H272 Health Sciences Building, Seattle, WA, 98195-7610, USA.

Pharmaceutical research

|September 13, 2023

概括

这项研究表明,乳腺癌抗性蛋白 (Bcrp) 在血脑脊髓液屏障 (BCSFB) 中活跃,有助于异生物体的运输. P-glycoprotein (P-gp) 也有所贡献,影响大脑中的药物度.

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.
生物化学生化学

背景情况:

大脑的血脑屏障 (BBB) 和血脑脊髓液屏障 (BCSFB) 保护大脑免受有害物质的影响.
据认为,P-glycoprotein (P-gp) 和乳腺癌抗性蛋白 (Bcrp) 在BCSFB中将异生菌从血液输送到脑液.

研究的目的:

为了研究在小鼠BCSFB的P-gp和Bcrp的功能活性.
为了澄清这些载体在BCSFB的异生物运动中的作用.

主要方法:

使用了新鲜分离的小鼠胆管 (CP) 结合体.
使用了光探针 (素-AM,BODIPY FL-Prazosin) 和抑制剂.
使用定量光显微镜和基因删除模型 (Abcb1a/b, Abcg2).

主要成果:

证实了Bcrp活性在状上皮质细胞的顶膜上.
抑制剂和Bcrp删除显著改变了异生菌探针积累.
删除P-gp显示了轻微的影响,这表明了其次要作用.

结论:

证明了BCSFB顶膜的功能性Bcrp活性.
证据支持P-gp在BCSFB运输中的额外作用.
这些发现有助于更好地理解中枢神经系统药物度调节对中枢神经系统药物开发的作用.

关键词:

中枢神经系统的药理动力学这是一种P-glycoprotein蛋白.血液-中枢神经液屏障的形成.乳腺癌抗性蛋白质乳腺癌抗性蛋白质毒品运输是毒品的运输方式.

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The Blood-brain Barrier

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