内在信号通路调节向的蛋白质降解
Yuki Mori1,2, Yoshino Akizuki1,2, Rikuto Honda1,2
1Laboratory of Protein Degradation, Institute for Advanced Life Sciences, Hoshi University, 2-4-41 Ebara, Shinagawa-ku, Tokyo, 142-8501, Japan.
Nature communications
|July 2, 2024
概括
通过抑制细胞信号通路,可以增强向蛋白质降解. 抑制PARG,PERK和HSP90的抑制剂促进了癌症点的降解,如BRD4,使细胞对细胞亡敏感.
科学领域:
- 生物化学 生化学
- 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:
- 向蛋白质降解是一种有前途的药物发现方法.
- 控制向蛋白质降解的监管机制尚未完全理解.
研究的目的:
- 确定调节BRD4和相关新基质向蛋白质降解的细胞信号通路.
- 研究信号通路抑制剂增强PROTAC介导降解的机制.
主要方法:
- 使用基于CRL2-VHL和CRL4-CRBN的蛋白质分解向化马体 (PROTACs).
- 研究了向多ADP ribocylation (PARG),展开蛋白质反应 (PERK) 和热冲击蛋白90 (HSP90) 的抑制剂的影响.
- 分析了无处不在模式和三元复合体形成.
主要成果:
- PARG抑制 (PDD00017273) 通过促进染色质解离和增强三元复合体形成,促进BRD4降解.
- 抑制HSP90 (luminespib) 增强了无处不在化后的BRD4降解.
- 抑制PERK (GSK2606414) 也可以增强降解.
- 这些信号抑制剂使细胞对PROTAC诱导的亡敏感.
结论:
- 细胞内在的信号通路可以在多个步骤中抵消化学诱导的目标降解.
- 特定信号通路的抑制剂可以克服这些抵消机制,增强向蛋白质降解.
- 这项研究揭示了一种可用药的策略,以加强PROTAC在癌症治疗中的疗效.
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