基于三碳烯的PROTACs降解了SARS-CoV-2的Mpro蛋白酶
Liuruiqi Luo1, Yuxiang Lu1, He Meng1
1MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, IGCME, School of Chemistry, Sun Yat-Sen University, Guangzhou, China.
Chemistry (Weinheim an der Bergstrasse, Germany)
|November 30, 2025
概括
研究人员开发了metallo-PROTACs,这是一种使用金属复合物用于向蛋白质降解的新方法. 这一策略增强了细胞吸收和功效,克服了传统PROTACs的主要局限性.
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:
- 通过向蛋白质分解的嵌合体 (PROTACs) 进行向蛋白质降解 (TPD) 是传统抑制剂的替代品.
- 在PROTAC开发中的关键挑战包括连接体的发现和实现足够的细胞透性.
研究的目的:
- 开发一种新的金属PROTAC (Re2),以克服PROTAC的局限性.
- 评估Re2在降解SARS-CoV-2主要蛋白酶 (Mpro) 的有效性,并评估其细胞吸收.
主要方法:
- 设计和合成Re2,一个金属-PROTAC结合了 (I) 复合弹头与cereblon E3结合酶连接体.
- 在体外和体外测试,以评估Mpro降解,共价结合和无素-蛋白酶体系统的依赖性.
- 细胞吸收和积累研究比较Re2与其非金属化对应物.
主要成果:
- 在72小时内,Re2在100nM时实现了有效的细胞内Mpro降解.
- 确认了共价Mpro结合和依赖于系统的ubiquitin-proteasome降解.
- 与有机模拟剂相比,金属化显著增强了细胞吸收和积累 (3-4倍).
结论:
- 金属-PROTACs代表了一个强大的策略,以提高PROTAC的疗效和细胞输送.
- 金属复合物可以克服PROTAC固有的透性障碍.
- 这种方法为设计高效的PROTAC提供了一个有希望的途径.
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