在RAS突变癌症中准SHOC2-RAS相互作用
Zachary J Hauseman1, Frédéric Stauffer2, Kim S Beyer2
1Novartis BioMedical Research, Cambridge, MA, USA.
Nature
|May 7, 2025
概括
研究人员发现SHOC2在RAS(Q61*) 癌症中是一种依赖性,使得新的向治疗方法的开发成为可能. 针对SHOC2-RAS相互作用的小分子抑制癌细胞生长,为癌症治疗提供了一个有前途的新途径.
科学领域:
- 癌症学
- 分子生物学
- 药物发现
背景情况:
- 鼠肉瘤 (RAS) 基因的激活突变是人类癌症的常见致癌驱动因素.
- 虽然KRAS抑制剂正在出现,但对于在黑色素瘤中普遍存在的NRAS ((Q61) *) 突变,仍然需要有效的治疗方法.
研究的目的:
- 为了确定RAS中的依赖性 (Q61*).
- 发现和开发针对SHOC2-RAS相互作用的新疗法.
主要方法:
- 在RAS ((Q61*) 瘤中确定SHOC2为依赖性.
- 使用X射线共晶结构来阐明NRAS ((Q61R) -SHOC2相互作用.
- 在体外进行高通量选,以发现向SHOC2的小分子.
- 进行基于结构的优化以开发工具化合物.
主要成果:
- SHOC2被确定为核酸状态依赖性和异型不可知性的依赖性.
- 通过X射线结晶学证实了致癌性NRAS (Q61R) 和SHOC2之间的直接相互作用.
- 发现了抑制SHOC2-NRAS (Q61*) 相互作用的小分子.
- 一种工具化合物在RAS突变癌症模型中表现出抑制MAPK信号和扩散,特别是NRAS ((Q61*).
结论:
- 这种SHOC2-RAS蛋白相互作用是癌症治疗的可用点.
- 这项研究为开发针对RAS信号通路的新疗法提供了基础.
- 针对SHOC2为治疗NRAS突变癌症提供了一个有前途的策略.
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