对罗尼西克利布及其衍生物的停留时间计算估计与CDK2:扩大使用古典和增强分子动力学模拟的范围
Felipe Bravo-Moraga1, Mauricio Bedoya2,3, Kirill Zinovjev4
1Center for Bioinformatics, Simulation and Modeling (CBSM), Department of Bioinformatics, Faculty of Engineering, Universidad de Talca, 1 Poniente 1141, Talca 3460000, Chile.
ACS omega
|May 5, 2025
概括
药物停留时间对于疗效至关重要,用计算方法量化. 在R5位置上的更大的替代剂显著延长了停留时间,与实验数据保持一致,并揭示了关键蛋白相互作用.
科学领域:
- 药理学和计算化学
- 药物发现和开发 药物发现和开发
- 分子动力学和生物物理学
背景情况:
- 药物停留时间对于评估药物的有效性和确定剂量至关重要.
- 了解药物与蛋白质的结合动力学和解结合途径对于药物开发至关重要.
- 循环素依赖性激酶2 (CDK2) 抑制剂是治疗研究的一个重要领域.
研究的目的:
- 用WT-MetaD.计算量化罗尼西克利布及其衍生物的相对停留时间.
- 确定影响和延长药物停留时间的分子决定因素.
- 为了阐明抑制剂从CDK2标蛋白解结合的途径.
主要方法:
- 采用了温度良好的元动力学 (WT-MetaD) 和经典分子动力学 (cMD) 模拟.
- 在纳米秒时间尺度上量化罗尼西克利布和八种衍生物的相对停留时间.
- 分析了蛋白质的灵活性,并确定了参与结合稳定性的关键氨基酸残留物.
主要成果:
- 在aminopyridine核心的R5位置上的更大的替代剂显著延长了计算停留时间.
- 计算结果显示与实验数据有很强的相关性 (R2 = 0.83).
- 确定了关键残留物 (Phe80,Lys33,Asp145) 和结相互作用 (Asp145),这些对抑制剂结合稳定性至关重要.
- 透露了两个主要抑制剂从CDK2通过α螺旋D和β-1/β-2段解绑路径.
结论:
- 计算方法,特别是WT-MetaD,可以准确地预测和量化药物停留时间.
- 药物设计策略涉及R5替代物的修改,可以优化抑制剂的停留时间和疗效.
- 特定的氨基酸相互作用和解结路径是CDK2抑制剂结合持续时间的关键因素.
相关概念视频
Inhibition of Cdk Activity
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The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
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M-Cdk Drives Transition Into Mitosis
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Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
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