发现和描述Uracil衍生品,针对UHRF1的设置和戒指域
Ifigeneia Akrani1, Danai Driva1, Efstratios Tsakalidis1
1Division of Pharmaceutical Chemistry, Department of Pharmacy, National and Kapodistrian University of Athens, Panepistimiopolis Zografou 15771, Athens, Greece.
Journal of chemical information and modeling
|August 19, 2025
概括
研究人员确定了基于 uracil 的新型化合物,通过准其 SRA 域来调节 UHRF1 瘤基因. 这些化合物通过减少癌细胞中的全球DNA甲基化来显示出表观遗传疗法的潜力.
科学领域:
- 表观遗传学和癌症生物学
- 药用化学 医学化学
- 结构生物学 结构生物学
背景情况:
- 通过识别半甲基化DNA,UHRF1瘤基因在表观遗传中发挥着关键作用.
- 抑制UHRF1的DNA结合功能,特别是其SRA域,为癌症提供了潜在的治疗策略.
- 之前的研究突出了一个具有体外DNA脱甲基化活性的胺衍生物.
研究的目的:
- 发现和描述与UHRF1.1的SRA域结合的新型小分子.
- 评估这些化合物作为表观遗传调节剂和治疗剂的潜力.
- 阐明UHRF1 SRA域绑定的结构基础.
主要方法:
- 在NCI/DTP化合物存储库中对UHRF1 SRA域结合剂进行底层搜索.
- 热选和异热定位热量计 (ITC) 用于评估化合物的结合亲和力.
- 分子模拟,计算水分映射和热容量测量用于结构分析.
- 在UHRF1-依赖性结直肠癌HCT116细胞中的体外DNA甲基化试验.
主要成果:
- 确定并证实了两种基于 uracil 的化合物与 UHRF1 SRA 域有亲和力.
- 确定了对已识别的化合物的独特热力学结合配置,包括力-力补偿.
- 最强效的化合物NSC232005表现出显著的全球DNA脱甲基化活性 (大约2倍). 在25μM的HCT116细胞中减少75%).
结论:
- 合理设计的 uracil 支架类似物是 UHRF1.1 的有希望的调节器.
- 这些发现支持UHRF1作为表观遗传疗法可行的药物标.
- 对这些化合物的进一步探索可能会导致新的抗癌治疗方法.
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