通过机器学习和生成AI方法,加速针对二基酸脱酶的药物发现
1MGIntelligence, P.T.Rajan Salai, K.K.Nagar, Chennai, Tamilnadu 600078, India.
Computational biology and chemistry
|April 6, 2025
概括
这项研究使用机器学习和生成人工智能来加速对各种疾病的二基酸脱酶 (DHODH) 抑制剂的发现. 人工智能方法显著减少了查时间和成本,同时提高了分子多样性和预测准确性.
科学领域:
- 生物化学和药物化学 医学化学
- 计算机化药物发现技术
- 药理学中的人工智能
背景情况:
- 氨酸脱酶 (DHODH) 是胺生物合成中的关键酶,使其成为癌症,自身免疫性疾病和传染病的重要治疗点.
- 发现DHODH抑制剂的传统方法往往耗时且昂贵,阻碍了新疗法的开发.
研究的目的:
- 通过整合机器学习 (ML) 和生成性人工智能 (AI) 来加速新型二基酸脱酶 (DHODH) 抑制剂的发现.
- 提高针对DHODH的潜在候选药物的识别效率并降低成本.
主要方法:
- 利用随机森林 (RF),XGBoost (XGB) 和后勤回归 (LR) 来预测潜在抑制剂的pIC50值.
- 采用基于图形卷积网络的变化自编码器 (GCN-VAE) 进行新型药物样分子的新型生成.
- 进行了分子对接研究,以评估产生的分子与DHODH的结合 afinities 和相互作用.
主要成果:
- 随机森林 (RF) 证明了最高的预测准确度 (93%的测试准确度,在看不见的分子上为81%),表明卓越的概括能力.
- 使用GCN-VAE生成了59种独特的药物样分子,其中五种化合物显示预测的pIC50值大于7.
- 排名第一的生成分子显示出强大的结合亲和力 (-11.1 kcal/mol) 和低抑制常数 (Ki = 269.8 nM),与关键的DHODH残留物具有有利的相互作用.
结论:
- 集成的人工智能驱动的工作流显著加速DHODH抑制剂的发现,减少查时间和增加分子多样性.
- 这种方法为开发针对DHODH的新疗法提供了一个可扩展和具有成本效益的战略,代表了药物发现的转型性进步.
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