在黑色素瘤细胞中,NRas纳米集群介导BRAF/ERK和PI3K/AKT信号之间的交叉交互
Oren Yakovian1, Julia Sajman1,2, Eilon Sherman1
1Racah Institute of Physics, The Hebrew University, Jerusalem 91904, Israel.
International journal of molecular sciences
|December 11, 2025
概括
NRas蛋白与PI3K和BRAF形成纳米集群,影响黑色素瘤细胞信号传递和增殖. 抑制这些相互作用为癌症提供了潜在的治疗策略.
科学领域:
- 细胞生物学 细胞生物学
- 分子瘤学分子瘤学
- 生物物理学的生物物理.
背景情况:
- NRas蛋白对于黑色素细胞中激活蛋白激酶 (MAPK) 路径信号传递至关重要.
- 对于NRas信号传输的精确分子机制,动力学和治疗潜力,我们仍然不完全理解.
研究的目的:
- 研究NRas,PI3K和BRAF的纳米组织和动态.
- 阐明由NRas纳米集群介导的MAPK和PI3K路径之间的功能交叉.
- 评估针对NRas介导信号纳米集群的治疗影响.
主要方法:
- 使用多色单分子局部化显微镜技术 (PALM和dSTORM).
- 在固定的和活的黑色素瘤细胞中检查了纳米级组织.
- 研究了临床干扰的影响,包括Ras结合域过度表达和途径抑制剂 (沃特曼宁,特拉美丁尼).
主要成果:
- 包括瘤性Q61R突变在内的NRas,与PI3K和BRAF在血纳米集群中的同位体.
- 在活细胞中观察到NRas-PI3K联合集群的动态,时间长达几分钟.
- 破坏NRAS-PI3K相互作用减少了pAKT,pERK水平和癌细胞增殖.
结论:
- 通过涉及PI3K和BRAF的动态纳米级集群进行NRas介导的信号传输.
- 这些纳米集群代表了MAPK和PI3K路径之间的交叉通话的关键节点.
- 准NRAS纳米集群相互作用为黑色素瘤提供了一个有前途的治疗策略.
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