通过大规模的功能性表观遗传学屏幕揭示了YAP响应元素的癌症谱系特定调节
Inês A M Barbosa1, Rajaraman Gopalakrishnan2,3, Samuele Mercan1
1Disease Area Oncology, Novartis Institutes for Biomedical Research, Basel, Switzerland.
YAP蛋白对癌细胞生长至关重要. 虽然在恶性多层层层髓瘤 (MPM) 和膜层黑色素瘤 (UM) 中是必不可少的,但其与TEAD的相互作用在UM中是不可缺少的,影响了向治疗.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- YAP蛋白作为TEADs的转录协激活剂,调节细胞增殖,在各种癌症中经常表现出异常激活.
- 在恶性多层层瘤 (MPM) 中,YAP激活源于Hippo通路上游组件中的功能丧失突变.
- 相反,在Uveal黑色素瘤 (UM) 中,YAP激活独立于Hippo通路发生,突出了不同的致癌机制.
研究的目的:
- 调查激活YAP的不同致癌病变如何影响其致癌程序,这对于开发选择性抗癌疗法至关重要.
- 确定YAP-TEAD相互作用在MPM和UM中YAP驱动的瘤发生中的作用.
- 在不同癌症类型中识别融合和分离的YAP调节网络.
主要方法:
- 在MPM和UM模型中对YAP监管要素的功能查询.
- 评估YAP的重要性及其与TEAD在两种癌症类型中的相互作用.
- 在MPM和UM中对YAP驱动的致癌途径进行比较分析.
主要成果:
- 对于MPM和UM来说,YAP是不可或缺的,但它与TEAD的互动在UM中意想不到是不可或缺的.
- 这一发现限制了TEAD抑制剂在Uveal黑色素瘤的治疗潜力.
- 系统分析揭示了MPM和UM之间共享和独特的YAP监管计划,揭示了血统特定的特征.
结论:
- YAP监管网络在不同类型的癌症中表现出显著的血统特征.
- 了解这些差异对于设计针对YAP信号的有效,定制的治疗策略至关重要.
- 在UM中YAP-TEAD相互作用的可用性需要在这种情况下为YAP向治疗采取替代方法.
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