DrugGen通过大型语言模型和强化学习来增强药物发现
Mahsa Sheikholeslami1,2, Navid Mazrouei1, Yousof Gheisari1,3
1Regenerative Medicine Research Center, Isfahan University of Medical Sciences, Isfahan, 81746 73461, Iran.
Scientific reports
|April 18, 2025
概括
作为一种先进的生成模型,DrugGen通过创建具有比DrugGPT更高结合亲和度的有效小分子来增强药物发现. 这种人工智能方法提高了开发新疗法的效率和成功率.
科学领域:
- 人工智能的人工智能
- 计算化学计算化学
- 药物发现 药物发现 药物发现
背景情况:
- 传统的药物设计与复杂性作斗争,导致高临床试验失败率.
- 深度学习生成模型提供了希望,但面临着化学有效性和结合批准的药物特征的挑战.
- 像DrugGPT这样的现有模型产生了分子,但缺乏对类似药物的特性和结构完整性的优化.
研究的目的:
- 介绍DrugGen,用于小分子药物发现的增强生成模型.
- 为了提高化学有效性,结合性亲和力预测,以及在新药设计中的效率.
- 为了利用深度学习来产生新的,高质量的候选药物,并探索药物重新定位.
主要方法:
- 基于变压器的模型DrugGen在经批准的药物标相互作用上进行了微调.
- 采用了近距离政策优化,奖励来自蛋白质-连接体结合亲和力预测 (PLAPT) 和无效结构评估器.
- 产生的分子被评估为有效性,结合亲和力,多样性,新性和对接模拟对象,如FABP5.5.
主要成果:
- DrugGen实现了100%的有效结构生成,超过了DrugGPT的95.5%.
- 与DrugGPT (5.81 [4.97-6.63]) 相比,DrugGen产生的分子具有明显更高的预测结合亲和力 (7.22 [6.30-8.07]).
- 对接模拟证实了有效的结合位点向,DrugGen的性能优于FABP5.5的参考分子.
结论:
- 药物基因代表了人工智能驱动的药物发现的重大进步,产生优异的小分子.
- 该模型在生成有效,强效和多样化的候选药物方面表现出很高的性能,解决了以前生成方法的局限性.
- 药物基因显示出加速制药研究的潜力,包括化合物生成,药物重新定位和新型药设计.
相关概念视频
Drug Discovery: Overview
7.1K
Drug discovery is a multifaceted process involving extensive screening, testing, and optimization of lead compounds to identify potential new drugs for therapeutic use. It combines several approaches, including screening large numbers of natural products, chemical modification of known active molecules, identification of new drug targets, and rational design based on biological mechanisms and drug-receptor structure. These approaches are carried out in both academic research laboratories and...
7.1K
Drug Abuse and Addiction: Pharmacological Phenomena
410
Drug dependence, abuse, and addiction are complex phenomena that can precipitate various abnormal states. Physical dependence refers to a state of pharmacological adaptation to a drug. This adaptation often results in tolerance—a reduced response to the drug after repeated administrations. When the drug use is abruptly stopped, withdrawal symptoms occur due to the body's need to readjust from the pharmacologically induced imbalance. However, tolerance and withdrawal symptoms do not...
410
Structure-Activity Relationships and Drug Design
437
Drug design is a dynamic field that involves discovering and developing new medications based on specific biological targets. This process heavily relies on structure-activity relationships (SAR) and quantitative structure-activity relationships (QSAR) to guide the design and optimization of efficient drugs.
SAR studies the intricate relationship between a drug's chemical structure and biological activity. It focuses on understanding how modifications to a drug's structure can influence...
SAR studies the intricate relationship between a drug's chemical structure and biological activity. It focuses on understanding how modifications to a drug's structure can influence...
437
Targets for Drug Action: Overview
5.9K
Drugs target macromolecules to modify ongoing cellular processes. Primary drug targets include receptors, ion channels, transporters, and enzymes.
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
Receptors are either membrane-spanning or intracellular proteins, which upon binding a ligand, get activated and transmit the signal downstream to elicit a response. Drugs bind receptors, either mimicking the action of endogenous ligands or blocking the receptor activity to bring about a modified response. Nearly 35% of approved drugs target the G...
5.9K
Drug-Receptor Interaction: Agonist
2.3K
Agonists are drugs that interact with specific receptors in the body to produce a biological response. When an agonist binds to a receptor, it activates or enhances the receptor's function, leading to physiological effects. The interaction between agonist drugs and receptors is crucial for their therapeutic action in various medical treatments.
Agonists can bind to receptors in different ways. Some agonists bind directly to the receptor's active site, mimicking the endogenous...
Agonists can bind to receptors in different ways. Some agonists bind directly to the receptor's active site, mimicking the endogenous...
2.3K
Principles of Drug Action
5.6K
Drugs are chemical substances that modify biological responses by interacting with macromolecular targets such as receptors, ion channels, transporters, and enzymes. Pharmacodynamics describes the course of action of drugs leading to the physiological effect at a specific site in the body.
Drugs can be agonists or antagonists. Like the endogenous ligands, agonists always bind and activate the target to produce a cellular response. Agonist binding induces a conformational change which in turn...
Drugs can be agonists or antagonists. Like the endogenous ligands, agonists always bind and activate the target to produce a cellular response. Agonist binding induces a conformational change which in turn...
5.6K


