一种特定于RIPK1的PROTAC降解剂通过增强免疫细胞死亡来实现强大的抗瘤活性
Jonathan Mannion1, Valentina Gifford1, Benjamin Bellenie2
1The Breast Cancer Now Toby Robins Research Centre, The Institute of Cancer Research, Fulham Road, London SW3 6JB, UK.
Immunity
|May 24, 2024
概括
用PROTACs向与受体相互作用的氨酸/氨酸蛋白激酶1 (RIPK1) 降解激酶,增强癌细胞死亡和免疫反应. 这种方法可以提高放射和免疫疗法的有效性,从而产生持久的抗瘤免疫力.
科学领域:
- 分子生物学分子生物学
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
背景情况:
- 受体相互作用的氨酸/氨酸蛋白激酶1 (RIPK1) 是细胞存活,炎症和细胞死亡的关键调节者.
- 癌细胞利用RIPK1的支架功能来抵抗亡和免疫监测.
- 准RIPK1提供了增强癌症治疗的潜在策略.
研究的目的:
- 通过使用解向嵌合体 (PROTAC) 调查选择性降解RIPK1的治疗潜力.
- 阐明RIPK1枯竭对细胞死亡途径和免疫信号的下游信号效应.
- 评估RIPK1降解与放射和免疫疗法结合的疗效.
主要方法:
- 在人类和小鼠细胞中产生小分子PROTAC用于选择性RIPK1降解.
- 对TNFR1,TLR3/4,NF-κB,MAPK和IFN信号通路上的RIPK1耗尽效应的分析.
- 评估RIPK1降解对RIPK3激活,亡和免疫细胞死亡 (ICD) 的影响.
- 在临床前癌症模型中评估与放射和免疫疗法联合RIPK1降解.
主要成果:
- 通过 PROTAC 调节的 RIPK1 枯竭使关键信号枢纽不受管制,并增强了 NF-κB,MAPK 和 IFN 输出.
- RIPK1的降解促进了RIPK3的激活,并诱导了亡.
- 联合治疗使癌细胞对TNF和干扰素敏感,促进ICD和抗瘤免疫力.
- 在临床前模型中,通过PROTACs向RIPK1导致了持久的治疗反应.
结论:
- 使用PROTAC的选择性RIPK1降解有效触发细胞死亡并增强抗癌免疫反应.
- 这种方法通过促进ICD来克服对放射和免疫治疗的耐药性.
- 用PROTAC针对RIPK1是一个有前途的策略,可以提高现有的癌症疗法的疗效,克服治疗耐药性.
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