通过Hantzsch反应进行P-糖蛋白功能障碍的正电子发射断层扫描的F-标记的二二胺
1State Key Laboratory of Vaccines for Infectious Diseases, Center for Molecular Imaging and Translational Medicine, Xiang An Biomedicine Laboratory, School of Public Health, Xiamen University, Xiamen, Fujian 361102, China; State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Innovation Platform for Industry-Education Integration in Vaccine Research, Xiamen University, Xiamen, Fujian 361102, China.
Bioorganic & medicinal chemistry letters
|June 1, 2024
概括
这项研究引入了一种新的PET标记物[18F]1,以更好地评估P-糖蛋白 (P-gp). 它显示出更好的稳定性和更低的脂性,为成像P-gp功能障碍提供更高的对比度.
科学领域:
- 放射化学 放射化学是指辐射化学.
- 分子成像学分子成像学
- 药理学 药理学是指药理学的学科.
背景情况:
- 用于P-glycoprotein (P-gp) 评估的正子发射断层扫描 (PET) 标记器面临着复杂的新陈代谢和高脂性等挑战.
- 现有的追踪剂往往表现出低基线吸收率,限制了它们的诊断效用.
研究的目的:
- 开发基于二胺 (DHP) 的新型PET标记剂,以改善稳定性和降低P-gp功能障碍成像的脂友性.
- 在临床前模型中评估新型标记物[18F]1的疗效.
主要方法:
- 一系列定制的DHP的合成,包括二甲基4-(4-基) -2,6-二甲基-1,4-二胺-3,5-二碳酸盐 ([1]).
- [18F]1的放射性标记使用一种新的"热Hantzsch"方法.
- 使用SGC7901及其耐药对应物进行的体外细胞吸收研究.
- 在P-gp受阻的小鼠体内MicroPET/CT成像.
主要成果:
- 化合物 [1] 与维拉帕米尔和其他DHP相比,在敏感和耐药细胞系之间显示出优异的细胞吸收差异.
- [18F]1以22.1 ± 0.1%的放射化学产量进行合成.
- 微PET/CT成像显示,P-gp受阻小鼠与对照小鼠的脑吸收[18F]1增加了超过3倍.
- [18F]1表现出有利的脂友性 (log D = 2.3) 和出色的清除.
结论:
- [18F]1是评估P-gp功能的有前途的PET追踪剂候选者,由于其增强的稳定性,降低的脂性和高对比度.
- 这种新型的追踪器为改善诊断和监测低背景噪声P-gp相关疾病提供了潜在的潜力.
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