相关实验视频
Updated: Feb 23, 2026
10:49
Antibiotic Dereplication Using the Antibiotic Resistance Platform
Published on: October 17, 2019
11.7K
一个以目标为导向的药物重定向策略,用于抗菌发现
Dongdong Zhang1,2, Haotian Li1, Anqiang Ye2
1Department of Respiratory and Critical Care Medicine, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, 185 Donghu Road, Wuchang District, Wuhan, 430071, China.
BMC microbiology
|February 21, 2026
概括
药物重定位确定了lifitegrast作为一种强大的抗菌剂,可以对抗阴性细菌. 这一战略为开发新抗生素来对抗耐药性病原体提供了一个有希望的替代方案.
科学领域:
- 微生物学 微生物学
- 计算化学的计算化学
- 药物发现 药物发现 药物发现
背景情况:
- 抗生素耐药性的增加需要新的抗菌药物开发策略.
- 药物再利用 (DR) 是一种可行的方法,可以加速发现新的抗菌剂.
- 这项研究验证了一种基于DR的策略,用于识别针对耐药病原体的新型抗菌剂.
研究的目的:
- 通过计算来选大量已批准的非抗菌药物库,以检测潜在的抗菌活性.
- 通过分子对接实验验证通过分子对接识别的候选药物的抗菌疗效.
- 阐明有希望的重用药物的作用机制.
主要方法:
- 使用Vina-GPU对2,027种已批准的药物与125种必需的细菌蛋白进行分子对接.
- 在体外对14种候选药物进行对六种格拉姆阴性细菌菌株的查.
- 使用聚米辛B非 (PMBN) 和光密度测量进行测定,以确定抑制率.
- 使用表面等离子共振 (SPR),分子动力学 (MD) 模拟和叶酸救援实验的机制验证.
主要成果:
- 一些非抗菌药物在初步查中表现出显著的抗菌活性.
- 分子对接确定了抗菌疗效的潜在药物向相互作用.
- 多种重新使用的药物对各种细菌物种表现出广泛的活性.
- 利菲特格拉斯特和PMBN的组合有效抑制了六种格拉姆阴性细菌.
结论:
- 利菲特格拉斯特与PMBN结合,对六种格拉姆阴性细菌菌株表现出强大的抑制作用.
- 初步证据表明,lifitegrast通过抑制叶酸代谢中的关键酶FolaA来起作用.
- 需要进一步研究lifitegrast的结构-活性关系,以优化其抗菌潜力.
相关概念视频
00:57Antibiotic Selection
60.5K
Overview
60.5K
01:26Drug Discovery: Overview
12.2K
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...
12.2K
01:27Combined Effects of Drugs: Synergism
7.0K
Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...
Such synergistic combinations...
7.0K
01:26Targets for Drug Action: Overview
10.7K
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...
10.7K