瘤基因EVI1通过与CTBP2的可针对性相互作用驱动急性髓性白血病
Dorien Pastoors1,2, Marije Havermans1,2, Roger Mulet-Lazaro1,2
1Department of Hematology, Erasmus MC Cancer Institute, Rotterdam, Netherlands.
Science advances
|May 15, 2024
概括
针对EVI1-CTBP相互作用是治疗不良的急性髓性白血病 (AML) 的有希望的策略. 使用PLDLS重复构造的新方法有效地抑制了白血病细胞的增殖.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 蛋白质组学是指蛋白质组学.
背景情况:
- 与染色体3q26/MECOM重组和EVI1激活相关的急性髓性白血病 (AML) 是一种具有侵略性和无法治愈的恶性瘤.
- 像EVI1这样的转录因子是具有挑战性的治疗点,需要基于了解其瘤机制的替代策略.
研究的目的:
- 阐明EVI1蛋白与CTBP1和CTBP2相互作用在驱动白血病转化中的关键作用.
- 开发和验证一种针对3q26/MECOM重组AML的EVI1-CTBP相互作用的新型治疗策略.
主要方法:
- 利用蛋白质折叠预测和先进的蛋白质组学来识别EVI1,CTBP1和CTBP2.2之间的基本相互作用动机.
- 设计了一个4x PLDLS重复结构,旨在竞争性地抑制EVI1-CTBP相互作用.
- 评估了PLDLS重复构造在抑制AML细胞增殖中的有效性,在体外和体外异种移植模型中.
主要成果:
- 证明了EVI1与CTBP1和CTBP2的相互作用,由单个PLDLS基因介导,对于白血病转化是不可或缺的.
- 4x PLDLS重复构造成功超越了对CTBP1和CTBP2.2具有约束力的EVI1的竞争.
- 在3q26/MECOM重新排列的AML细胞中观察到显著的增殖抑制,这些细胞在体外和异种移植模型中用PLDLS重复结构治疗.
结论:
- 这项研究提供了针对EVI1-CTBP相互作用的概念证明,作为AML的可行治疗策略.
- 开发特定的EVI1-CTBP抑制剂对治疗3q26/MECOM重组的AML有希望.
- 这些发现对于针对其他依赖于CTBP介导的瘤转录因子的EVI1驱动癌症和恶性瘤具有更广泛的意义.
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