长期居住时间的结构基础c-Src对手:来自分子动力学模拟的见解
Haiyang Zhong1,2, Zhengshuo Zhang1, Mengdan Chen1
1Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, Xuzhou Medical University, 209 Tongshan Road, Xuzhou 221004, China.
International journal of molecular sciences
|October 16, 2024
概括
开发更长的停留时间 (RT) c-Src 抑制剂可以提高疗效. 分子动力学表明,用硫胺组修改DAS-DFGO-I (DFGO) 改善了结合稳定性,为更有选择性的癌症治疗提供了一种策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- c-Src 激酶是细胞信号通路的关键调节剂,也是瘤学中验证的治疗点.
- 提高药物停留时间 (RT) 是提高激酶抑制剂的疗效和选择性的有希望的策略.
- 开发具有延长RT的c-Src抗剂可能会导致改善癌症治疗结果.
研究的目的:
- 通过分子动力学模拟,研究c-Src与长短RT抗剂的结合方式和解离机制.
- 为了阐明负责DAS-DFGO-I (DFGO) 长RT的分子相互作用.
- 设计和评估一种具有增强结合稳定的新型c-Src抑制剂.
主要方法:
- 用分子动力学 (MD) 模拟来分析c-Src抑制剂的结合动力学.
- 计算分析的重点是确定关键相互作用,包括键和疏水性接触,控制药物点的停留时间.
- 通过化学修饰化合物来探索结构-活性关系.
主要成果:
- 长RT化合物DAS-DFGO-I (DFGO) 结合于c-Src上的基位,与E310/D404形成关键的键,并与L322/V377发生疏水相互作用.
- 在DFGO中的胺基组与E310和D404.4形成不稳定的键.
- 一种经过修改的化合物,DFOGS,具有硫胺替代物,证明与E310/D404稳定了键,增强了与c-Src.的结合稳定性.
结论:
- 这项研究提供了一种机制性的理解,即具体的相互作用如何导致c-Src抑制剂的长停留时间.
- 在DFGO中将胺基组化学修改为硫胺基,显著提高了结合稳定性.
- 这些发现为开发强效和选择性长居时间c-Src抑制剂用于癌症治疗提供了合理的设计策略.
相关概念视频
01:49Conserved Binding Sites
4.2K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
4.2K
00:49Ligand Binding and Linkage
4.8K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
4.8K