在体外应用中,作为避免代谢降解的策略,VHL-修改的PROTEOLYSIS T准金马 (PROTACs)
Beatrice Castellani1, Michela Eleuteri2, Stefano Di Bona1
1Molecular Horizon s.r.l., Bettona 06084, Italy.
Journal of medicinal chemistry
|September 12, 2023
概括
蛋白质溶解向金马 (PROTACs) 是一种治疗蛋白质降解的治疗策略. 研究人员从VHL-连接体裂变中确定了一种特定的代谢物,确定了prolyl内酶作为关键酶,并开发了更稳定的PROTAC类似物.
科学领域:
- 生物化学 生化学
- 药用化学 医学化学
- 药物发现 药物发现 药物发现
背景情况:
- 针对蛋白质溶解的TARgeting Chimera (PROTACs) 利用蛋白质组进行向蛋白质降解,提供了一种新的治疗方式.
- 了解PROTAC代谢对于优化其体外和体内疗效至关重要.
- ·希佩尔-林道 (VHL) E3结合酶是PROTAC设计中常用的组成部分.
研究的目的:
- 为了阐明PROTACs的代谢命运,特别是那些使用VHL E3结合酶的人.
- 为了确定负责PROTAC联结体代谢的酶.
- 为了设计具有增强代谢稳定的VHL-连接物类型.
主要方法:
- 使用高分辨率质谱分析分析PROTAC代谢物.
- 为了确定酶活性,进行了体外测试.
- 合成修改后的VHL-连接物类似物和随后的PROTAC构造.
主要成果:
- 鉴定出一种特征性代谢物,由VHL连接体裂变产生的,其质量减少了200个单位.
- 肝脏和肝脏外的prolyl endopeptidases被认为是负责这种代谢分裂的主要酶.
- 成功合成了包含代谢稳定VHL配体的新型VHL导向的PROTACs.
结论:
- PROTAC的新陈代谢涉及VHL连接体部分的分裂,由prolyl内酶介导.
- 通过化学修饰,可以解决VHL配体的代谢不稳定性.
- 代谢稳定PROTACs的开发有望改善治疗应用.
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