"从头到尾"宏循环PROTAC的基于结构的设计
Chungen Li1, Yihan Chen1,2, Weixue Huang1
1State Key Laboratory of Chemical Biology, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, No. 345 Lingling Road, Shanghai 200032, China.
JACS Au
|December 30, 2024
概括
宏循环使SHD913这样的新型蛋白质分解向化马 (PROTAC) 能够克服强大的Brd4降解的效应,并改善癌细胞的代谢稳定性.
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:
- 宏循环增强药物特性,但对蛋白质溶解向金马 (PROTACs) 是一个挑战.
- PROTACs面临着诸如"子效应"等挑战,这限制了它们的有效性.
- Brd4蛋白是癌症治疗中的一个关键目标.
研究的目的:
- 设计和合成第一系列"头到尾"宏观环形PROTACs.
- 评估针对Brd4.4的新型宏环PROTACs的疗效,特异性和稳定性.
- 阐明宏循环PROTAC介导的蛋白质降解的作用机制和结构基础.
主要方法:
- 宏观循环PROTACs的合理设计和合成.
- 在体外蛋白质降解试验 (DC50) 和细胞试验 (NanoBRET).
- 生物物理测试,共同晶体结构的确定,以及分子动力学模拟.
主要成果:
- 宏环PROTAC SHD913在低nM DC50值下显示出强大的Brd4降解.
- SHD913在很大程度上克服了"效应",并显示出更好的代谢稳定性.
- SHD913表现出积极的合作性,诱导了新的蛋白质-蛋白质相互作用,并且表现优于现有的宏观循环PROTACs.
结论:
- 宏观循环是一种可行的策略,用于设计有效的PROTAC.
- 像SHD913这样的宏循环PROTAC在强度,特异性和稳定性方面具有优势.
- 该研究提供了对宏循环PROTAC介导的三元复合体形成和蛋白质降解的结构性见解.
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