微调侧链替代:对宏环的脂性-溶性-性相互作用的影响
Yangping Deng1, Hengwei Bian1,2,3, Hongbo Li4
1State Key Laboratory of Medicinal Chemical Biology, Frontiers Science Center for New Organic Matter, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China.
Marine drugs
|January 27, 2026
概括
合成了宏环药物衍生物以改善其性能,但失去了活性. 尾部修改破坏了膜相互作用,突出显示了需要平衡目标参与和透性以获得有效的宏观循环疗法.
科学领域:
- 药用化学 医学化学
- 化学生物学 化学生物学
- 药物发现 药物发现 药物发现
背景情况:
- 宏循环药物在向以前无法治疗的蛋白质方面表现有前途,特别是在癌症治疗中.
- 胰腺癌干细胞抑制剂BE-43547A2 (BE) 由于高脂性,临床使用有限.
研究的目的:
- 设计和合成具有改善物理化学性质的新型宏环药物衍生物.
- 调查这些衍生品的结构-活动关系和目标参与.
主要方法:
- 用于模块化多样化的多功能后期中间体 (化合物17) 的简洁总合成.
- 模块化点击化学引入三醇环和灵活的基间隔器.
- 实验性确定脂性,溶解性和Caco-2的透性.
- 微尺度热泳 (MST) 用于直接目标参与研究.
- 分子动力学模拟和自由能量计算以评估跨膜处罚.
主要成果:
- 合成的衍生品表现出降低的脂性和改善的溶解性.
- 尽管改善了类似药物的特性,但细胞活动的意外丧失.
- MST揭示了化合物依赖的目标参与机制,其中一些衍生品保持约束力,而另一些则失去约束力.
- 分子动力学模拟表明,尾部修改破坏了药物膜和药物溶剂相互作用,增加了跨膜自由能量惩罚.
结论:
- 同时优化目标参与和细胞透性对于开发有效的宏循环药物至关重要.
- 化合物17作为一个有价值的支架,用于未来的优化在宏观循环疗法.
- 这项研究为在宏观循环药物设计中平衡类似药物的特性与治疗功能的蓝图提供了蓝图.
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