基于结构的建模方法确定了RAS突变性急性髓性白血病的有效药物组合
Luke Jones1,2, Oleksii Rukhlenko1,2, Tânia Dias1,2
1Systems Biology Ireland.
bioRxiv : the preprint server for biology
|July 14, 2025
概括
研究人员开发了一个计算模型,以确定RAF抑制剂组合对RAS突变性急性髓性白血病 (AML) 的有效治疗方法. 这些组合协同抑制ERK信号,在临床前模型中显示出治疗高风险AML的前景.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 激活RAS/RAF/MEK/ERK信号通路中的突变与急性髓性白血病 (AML) 的预后不佳有关.
- 在AML中治疗性地准这种途径存在重大挑战.
研究的目的:
- 利用基于结构的,动态的RAS通路模型来预测RAS突变AML的协同RAF抑制剂 (RAFi) 组合.
- 为了验证预测RAFi组合在体外和体内模型中的有效性.
主要方法:
- 基于结构的动态RAS路径模型的开发,用于*in silico*预测RAFi协同作用.
- 使用AML细胞系和患者样本验证预测的协同作用组合 (I1⁄2+II型,I+II型).
- 在临床前*NRAS*突变AML患者衍生异种移植 (PDX) 模型中评估组合疗效,评估白血病增长延迟和存活率.
主要成果:
- 在*in silico*模型成功预测了协同作用的RAFi组合,包括Lifirafenib (II型) + encorafenib (I1⁄2型) 和Lifirafenib (II型) + SB590885 (I型).
- 这两种组合都显示出显著的协同作用 *in vitro* 和减少RAS通路激活.
- 在*in vivo* PDX模型中,与单个药物相比,这些组合显著改善了白血病增长延迟和无事件生存率,并观察到特定于位点的疗效.
结论:
- 基于结构的建模方法可以有效地识别RAS突变AML的新和协同RAFi组合.
- 这些已识别的组合显示出强大的抗白血病活性 *in vitro* 和 *in vivo*,为高风险的AML提供潜在的治疗策略.
- 这项研究强调了计算建模在针对癌症治疗的药物发现中的实用性.
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