通过基于WHALES描述符的虚拟查和生物活性评估,为人类多巴胺载体重新定位药物
Ding Luo1, Zhou Sha2, Junli Mao1
1School of Pharmaceutical Sciences, Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chongqing University, Chongqing, 401331, China.
Journal of pharmaceutical analysis
|September 2, 2025
概括
这项研究重新利用现有的药物来发现人类多巴胺转运器 (hDAT) 的新型抑制剂. 三种化合物显示出显著的抑制潜力,验证了一种新的计算和实验性药物重定位工作流程.
科学领域:
- 计算化学和药理学
- 药物发现和开发
- 神经科学和分子生物学
背景情况:
- 人类多巴胺转运体 (hDAT) 是精神病药物的关键目标.
- 由于主要结合点的相互作用,现有的hDAT药物会引起成和刺激效应等副作用.
- 针对全位的新药有可能改善治疗特征.
研究的目的:
- 将现有药物转化为人类多巴胺载体 (hDAT) 的新型非典型抑制剂.
- 开发和验证用于药物重新用途的综合计算和实验工作流程.
- 识别与hDAT结合的化合物,避免传统药物的局限性.
主要方法:
- 使用权重整体原子定位和实体形状 (WHALES) 描述器进行大型药物库的虚拟选.
- 使用ADMETlab进行药理动力学和毒理学预测以及诱导适合对接 (IFD) 进行结合亲和度估计.
- 进行了体外测定,分子动力学 (MD) 模拟和结合性自由能分析,用于验证和机械学研究.
主要成果:
- 通过基于WHALES的相似性搜索,从4921种药物库中确定了27种非典型的hDAT抑制剂.
- 选择了六种化合物进行体外测试,其中三种化合物对hDAT具有显著的抑制作用.
- 已确定活性化合物的IC50值,最低值为0.542μM.
结论:
- 通过综合计算和实验方法成功鉴定出三种强有力的hDAT非典型抑制剂.
- 验证了提议的工作流程的有效性,以有效地针对特定蛋白质异质位点的药物重新定位.
- 这些发现为开发针对hDAT的神经和精神疾病的新疗法提供了有希望的候选药物.
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