合成差异化利索克利米德类似物以检测核糖体E位点结合
Salvatore Terrosu1, Liliia Nurullina1, Nantamon Supantanapong2
1INSERM U964, CNRS UMR7104, Université de Strasbourg, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), 67404 Illkirch, France.
ACS chemical biology
|March 22, 2025
概括
海洋衍生的化化合物,如lyssoclimides,显示强大的生物活性. 这项研究表明,C2-基和C7-基组通过增强核糖体结合和翻译抑制,对lissoclimide的效果至关重要.
科学领域:
- 海洋天然产品 化学 化学
- 药用化学 医学化学
- 分子生物学分子生物学
背景情况:
- 化海洋天然产品,特别是lyssoclimides,以其显著的抗微生物和抗癌特性而闻名.
- 之前的研究发现了一种素-π分散相互作用,涉及chlorolisoclimide和核糖体的tRNA退出部位.
研究的目的:
- 合成和评估与不同C2替代物 (,,甲基) 的lyssoclimide类似物,以了解素身份在生物活性中的作用.
- 研究这些类似物对真核细胞转化机制和核糖体结合的影响.
主要方法:
- 合成化索克利米德,化索克利米德和甲化索克利米德类似物.
- X射线共晶学以确定与真核核糖体结合的类似物结构.
- 在体外和体内测试以评估对翻译,核糖体热稳定性和结合常数 (FRET) 的影响.
主要成果:
- 详细的结构洞察力介绍了lissoclimide类似物如何与真核核糖体结合,与核糖体蛋白EL42相互作用.
- 证明了C2-原子通过-π相互作用,与C7-基组的键协同作用到EL42.
- 观察到这种协同作用导致增强的翻译抑制和细胞毒性,在缺乏这些关键组的类型中活性降低.
结论:
- C2-基和C7-基组对于lissoclimides强大的生物活性至关重要.
- 在C2处的素-π相互作用和在C7处的结对于强烈结合于核糖体和有效的翻译抑制至关重要.
- 这项研究提供了对lissoclimides的结构-活性关系的更深入的理解,指导着未来的药物设计.
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