分子动力学模拟与马尔科夫模型相结合,探索菌抑制剂对含odomain蛋白4的结合效应
Xiaotang Yang1, Yilin Gao1, Fuyan Cao1
1Key Laboratory for Molecular Enzymology and Engineering of Ministry of Education, School of Life Science, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
International journal of molecular sciences
|July 14, 2023
概括
这项研究揭示了全抑制剂ZL0590如何作用于含有odomain的蛋白4 (BRD4). ZL0590改变了BRD4的情况
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 药物发现 药物发现
背景情况:
- 含odomain蛋白4 (BRD4) 是癌症发展中的关键表观遗传调节剂.
- 像ZL0590这样的菌抑制剂对BRD4有很大的承诺,但它们的精确抑制机制需要进一步阐明.
- 了解BRD4抑制对于开发新型癌症疗法至关重要.
研究的目的:
- 阐明基含蛋白4 (BRD4) 上的全抑制剂ZL0590的抑制机制.
- 通过计算方法研究ZL0590与正经抑制剂MS436之间的相互作用.
- 为BRD4向癌症治疗的合理设计提供理论基础.
主要方法:
- 用分子动力学 (MD) 模拟来建模ZL0590和MS436与BRD4的相互作用.
- 马尔科夫状态建模被用来分析动态路径和抑制剂结合后的结构变化.
- 分析的重点是次要结构变化,循环动态 (ZA和BC循环) 和活动现场可访问性.
主要成果:
- 在特定的BRD4区域 (残留100-105) 中,ZL0590结合诱导的α螺旋形成,与MS436效应不同.
- 由ZL0590引起的全抑制破坏了MS436诱导的α螺旋形成,这表明了全干扰.
- 马尔科夫流量分析表明,抑制剂结合主要影响ZA循环中的α螺旋动力学,改变活性部位的形状并阻止MS436的进入.
结论:
- ZL0590通过减少ZA和BC循环之间的距离,从而阻断BRD4活性部位,作为全抑制剂起作用.
- 通过ZL0590的结合,可以阻止MS436的正经抑制剂完全进入活性囊中.
- 这项研究为ZL0590对BRD4的全抑制机制提供了关键的见解,为未来的癌症药物开发提供了宝贵的参考.
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