河马和MAPK通路激活之间的合作驱动了对TEAD抑制的获得性抵抗
Sayantanee Paul1, Thijs J Hagenbeek1, Julien Tremblay2
1Department of Discovery Oncology, Genentech Inc, South San Francisco, CA, USA.
Nature communications
|February 18, 2025
概括
在癌症中,由于AP-1 (激活蛋白-1) 活性增加和恢复YAP (是-关联蛋白) -TEAD结合,因此出现了对TEAD抑制剂的耐药性. MAPK通路抑制剂可以在依赖Hippo通路的癌症中克服这种抵抗.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症信号传递 癌症信号传递
背景情况:
- TEAD (转录增强关联域) 转录因子是癌症中河马通路的关键作用因子.
- 对包括TEAD抑制剂在内的向疗法的耐药性是一个重大的临床挑战.
- 对TEAD抑制的抵抗机制尚未完全理解.
研究的目的:
- 研究驱动对TEAD抑制的抵抗机制.
- 探索Hippo和MAPK途径在癌症抗药性中的相互作用.
- 确定克服TEAD抑制剂耐药性的潜在策略.
主要方法:
- 在癌症模型中使用泛TEAD抑制剂 (GNE-7883).
- 评估了YAP-TEAD的结合和转录活动.
- 分析了染色体占用率和通路活性 (MAPK,AP-1).
- 研究了FOSL1在TEAD抑制剂耐药性的作用.
主要成果:
- 对AP-1 (激活蛋白-1) 转录因子的升调和恢复的YAP (是相关蛋白) -TEAD活动驱动对GNE-7883的耐药性.
- 耐药细胞显示恢复了YAP和TEAD染色体结合,并增加了MAPK通路活性.
- FOSL1对于YAP和TEAD染色体结合至关重要,并有助于抵抗.
结论:
- 在TEAD抑制剂耐药性的背景下,Hippo和MAPK途径之间存在临床相关的相互作用.
- 恢复AP-1活动和增强的MAPK信号是抵抗的关键机制.
- 在相关癌症中,MAPK通路抑制剂在缓解对TEAD抑制的抵抗方面表现有前途.
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