低氧诱导因子 (HIF-1alpha) 的分子对接和分子动力学:向潜在的抑制剂
Dina Reda1, Abdo A Elfiky2, M Elnagdy3
1Medical Biophysics, Department of Physics, Faculty of Science, Helwan University, Cairo, Egypt.
Journal of biomolecular structure & dynamics
|November 9, 2024
概括
新的抗癌药物尼罗丁尼和皮尼迪对HIF-1α具有很高的结合亲和力,HIF-1α是癌细胞适应低氧的关键调节剂. 这些化合物显示出有前途的分子动力学和安全性,需要进一步研究.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 计算化学的计算化学
背景情况:
- 缺氧诱导因子1-α (HIF-1α) 对于癌细胞适应低氧环境至关重要.
- 识别新的HIF-1α抑制剂对于开发新的抗癌疗法至关重要.
- 虚拟查和分子动力学模拟是药物发现的强大工具.
研究的目的:
- 通过对现有的抗癌药物的虚拟查来识别HIF-1α的新型抑制剂.
- 评估潜在的抑制剂与HIF-1α的结合亲和力和分子动力学.
- 评估已识别的化合物的初步安全性和药理动力学特性.
主要方法:
- 对HIF-1α进行分子动力学 (MD) 模拟,以了解其稳定的动态特征.
- 对217种抗癌药物进行虚拟查,以对比优化的HIF-1α结构.
- 对于排名最高的化合物 (尼洛替尼,皮克尼迪,2-ME2) 的分子对接和200 ns的MD模拟.
- MM-GBSA分析用于计算结合的自由能量.
主要成果:
- 尼罗丁尼和Pycnidione对HIF-1α表现出高的结合亲和力 (-9.04和-9.34千卡/mol),超过了对照组 (2-ME2,-6.68千卡/mol).
- MD模拟表明稳定的相互作用,尼洛尼显示有利的动态 (较低的RMSD,更高的SASA,较低的RMSF,更平的Rg).
- MM-GBSA证实了尼洛尼 (-23.77 ± 5.29 kcal / mol) 和Pycnidione (-21.85 ± 4.24 kcal / mol) 的强大的结合能.
结论:
- 尼罗丁尼和Pycnidione被确定为具有显著结合亲和力的HIF-1α竞争性抑制剂.
- 尼罗丁尼表现出一致且有利的分子动力学特性.
- 这些化合物具有有利的初步安全性 (穿透血脑屏障,非致癌性,低急性口服毒性,低CYP抑制) 概况,因此需要进一步研究它们在缺氧驱动的癌症中的治疗潜力.
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