在PAF1和ENL/AF9 YEATS抑制之间发生的化学遗传相互作用
bioRxiv : the preprint server for biology
|September 18, 2025
概括
通过降低目标基因的调节,ENL YEATS域抑制剂显示出抗白血病的作用. 然而,这种基因抑制本身并不能完全解释白血病模型中的抗增殖反应,即使具有耐药性.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药物发现 药物发现 药物发现
背景情况:
- 转录调节蛋白,如ENL,是瘤发生和药物开发的关键.
- 在急性白血病的生存和发病过程中,ENL的YEATS域至关重要.
- ENL YEATS域抑制剂通过降低目标基因的调节,显示出抗白血病效应.
研究的目的:
- 研究ENL YEATS域抑制剂在具有内在和获得性耐药性的白血病模型中的转录效应.
- 澄清近端转录变化与下游抗增殖反应之间的联系.
- 确定ENL目标基因抑制是否足以产生抗白血病活性.
主要方法:
- 使用了对ENL YEATS域抑制剂的内在和获得性耐药性的模型.
- 进行了基于CRISPR/Cas9的基因修饰器选,以确定抵抗机制.
- 使用转录调节器PAF1.1的药物耐药性等位基因构建的异构模型.
主要成果:
- 在敏感和耐性白血病模型中,ENL YEATS域抑制诱导了类似的转录反应.
- 在PAF1中确定了框架内删除,使其对ENL YEATS域抑制剂产生抗性.
- 在敏感白血病和耐性白血病中观察到ENL目标基因的共享下调.
结论:
- 抑制ENL目标基因是敏感和耐性白血病的保存反应.
- 对ENL目标基因的下调不足以充分解释ENL对抗剂的抗白血病作用.
- 需要进一步的研究,以了解ENL抑制剂的完整作用机制.
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