强大的循环抑制剂破坏了FANCM-RMI相互作用
Lisa J Alcock1, Tianyi Gao1, Rohan Bythell-Douglas2
1School of Chemistry, The University of Sydney, Camperdown, NSW 2145, Australia.
Journal of medicinal chemistry
|June 6, 2025
概括
研究人员发现了首个针对FANCM-RMI蛋白相互作用的化学抑制剂,这对于替代性延长端粒 (ALT) 途径癌症中基因组稳定性至关重要. 这些强大的循环抑制剂为癌症治疗开发提供了新的途径.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- FANCM-RMI蛋白与蛋白相互作用对于保持基因组稳定性至关重要.
- 这种相互作用在使用替代延长端粒 (ALT) 途径生存的癌症中至关重要.
研究的目的:
- 确定和描述FANCM-RMI相互作用的第一个化学抑制剂.
- 探索这些抑制剂在开发新的癌症疗法方面的潜力.
主要方法:
- 使用mRNA显示器对循环的查以识别抑制剂.
- 抑制剂结合亲和力 (KD) 和破坏性强度 (IC50) 的表征.
- 进行X射线结晶学,氨酸扫描和共免疫沉研究,以阐明结合模式和细胞内活性.
主要成果:
- 发现了强有力的循环抑制剂,可以利用RMI1/2结合口袋,具有纳米分子亲和力 (KD = 2-10 nM).
- 抑制剂显著破坏了FANCM-RMI相互作用 (IC50 = 54-104 nM).
- 结构研究揭示了新的结合模式,基于细胞的测试证实了本地相互作用的破坏.
结论:
- 这些循环是FANCM-RMI相互作用的第一个验证的抑制剂.
- 它们作为研究基因组稳定机制的有价值的化学工具.
- 它们代表了开发针对ALT驱动癌症的治疗方法的有希望的起点.
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