鉴定一种Staphylococcus aureus amidase催化域抑制剂,通过顺序虚拟查,分子动力学模拟和生物评估来防止生物膜的形成
Sharon D Morris1, V Anil Kumar2, Raja Biswas1
1Bioinformatics and Computational Biology Lab, Amrita School of Nanosciences and Molecular Medicine, India.
International journal of biological macromolecules
|November 4, 2023
概括
新的化合物SPECS-1和SPECS-2有效抑制黄金葡萄球菌 (S. aureus) 生物膜. 这些分子向金黄色胺酶 (AM) 蛋白质,为抗生素耐药植入物相关感染提供了有前途的策略.
科学领域:
- 微生物学 微生物学
- 结构生物学 结构生物学
- 药物发现 药物发现 药物发现
背景情况:
- 黄金葡萄球菌 (S. aureus) 形成抗生素耐药的生物膜,是植入物相关感染的主要原因.
- 黄金胺酶 (AM) 蛋白在生物膜中过度表达,对其发育至关重要.
- 针对AM提供了一种潜在的策略来对抗S. aureus生物膜感染.
研究的目的:
- 设计和识别S. aureus胺酶 (AM) 的小分子抑制剂,以防止生物膜的形成.
- 评估已识别的化合物对S. aureus生物膜的疗效. 在体外和临床分离物中.
主要方法:
- 基于结构的小分子设计,利用AM蛋白催化域的晶体结构.
- 虚拟查,药理动力学分析和生物测试以确定潜在的抑制剂.
- 分子动力学模拟和MM-GBSA用于稳定性评估;体外生物膜抑制和破坏试验.
主要成果:
- 过了25个小分子,选择了SPECS-1和SPECS-2进行进一步研究.
- 在实验室中,SPECS-1和SPECS-2显示出S. aureus生物膜在250μg/ml时具有显著的预防和破坏.
- 这些化合物表现出抗生物膜活性,对临床分离的耐美西林黄金色杆菌 (MRSA) 产生抗生物膜活性.
结论:
- SPECS-1和SPECS-2是S. aureus生物膜的安全有效抑制剂.
- 这些化合物可以被开发为治疗植入物相关生物膜感染的治疗剂.
- 向S. aureus amidase (AM) 是抗生物膜疗法的一种可行的策略.
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