亲和性和合作性调节三元复合体的形成,以推动向的蛋白质降解
Ryan P Wurz1, Huan Rui1, Ken Dellamaggiore1
1Amgen Research, Amgen Inc., Thousand Oaks, CA, USA.
Nature communications
|July 13, 2023
概括
针对蛋白解酶的嵌合体 (PROTACs) 通过劫持无素-蛋白酶体系统,提供了新的治疗方法. PROTACs的结合亲和力和合作力与降解强度有很强的相关性,这使得有效的蛋白质降解剂的预测性设计成为可能.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 使用蛋白质溶解向嵌合体 (PROTACs) 的向蛋白质降解是一种有前途的治疗策略.
- 由于多个降解步骤,设计有效的PROTAC是复杂的,阻碍了结构-活动关系的建立.
研究的目的:
- 通过使用VHL招募的PROTAC来描述SMARCA2和BRD4的PROTAC介导的三元复合体形成和降解.
- 评估 PROTAC 架构变化如何影响三元复杂属性和降解活动.
- 为设计强大的PROTAC降解剂建立一个预测框架.
主要方法:
- 使用了针对SMARCA2和BRD4的VHL招募的PROTAC.
- 多种不同的 PROTAC 组件用于评估三元复合物形成和降解参数.
- 开发了一个三元复杂结构建模工作流程来计算接口埋藏的表面积.
主要成果:
- 发现三级复合物的结合亲和力和合作性与降解强度和初始降解速率有很好的相关性.
- 开发的三元复杂结构建模工作流程根据计算的埋藏表面积准确预测了结合亲和力.
- 特定的PROTAC架构修改影响了三元复合体形成和降解效率.
结论:
- 结合PROTAC的亲和性和合作性是降解强度的关键决定因素.
- 基于三元复杂模型的预测框架可以指导更有效的PROTAC的合理设计.
- 这项研究为优化针对性蛋白质降解疗法的PROTAC设计提供了见解.
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