一种强效和选择性的ENL降解剂抑制瘤基因表达和白血病进展
Zhaoyu Xue1, Lihuai Qin2, Hongwen Xuan1
1Department of Epigenetics, Van Andel Institute, Grand Rapids, MI, USA.
Science advances
|August 28, 2024
概括
一种新型化合物MS41有效降解致癌蛋白ENL,抑制白血病细胞的生长和进展. 这种向降解为依赖ENL的癌症,包括混合血统白血病提供了有前途的治疗策略.
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:
- 十一-十九白血病 (ENL) 蛋白质对于急性白血病的瘤发生至关重要,特别是混合血统白血病重组 (MLL-r) 白血病.
- 恩尔的读者域识别了基因素化,驱动瘤基因表达和白血病的进展.
研究的目的:
- 开发一种强效和选择性的ENL降解剂,用于治疗干预.
- 调查新型化合物MS41的作用机制和体内疗效.
主要方法:
- 开发MS41,一个·希佩尔-林道招募ENL降解剂.
- 评估MS41对依赖ENL的白血病细胞生长的影响.
- 对ENL相关转录机械的染色质占用率的分析.
- 在MLL-r白血病的异种移植小鼠模型中对MS41的评估.
主要成果:
- MS41有力地和选择性地降解ENL,抑制白血病细胞的增殖.
- MS41减少了ENL染色质占用,抑制了瘤基因表达,并激活了分化基因.
- 在MLL-r白血病异种移植模型中,MS41在体内表现出有效性,并且耐受性良好.
- MS41还降解了威尔姆斯瘤中发现的突变ENL蛋白.
结论:
- 对ENL的药理降解是对依赖ENL的癌症的可行的治疗策略.
- MS41作为一种有价值的化学探针和潜在的抗癌疗法,用于进一步开发.
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