小分子抑制剂的BfrB-Bfd 相互作用 降低Pseudomonas aeruginosa 适应性和潜在的基诺活性
Achala N D Punchi Hewage1, Huili Yao2, Baskar Nammalwar3
1Department of Chemistry , University of Kansas , 2030 Becker Drive , Lawrence , Kansas 66047 , United States.
Journal of the American Chemical Society
|May 1, 2019
概括
研究人员开发了小分子抑制剂,针对细菌储铁蛋白细菌铁蛋白 (BfrB) 和其与铁素 (Bfd) 的相互作用. 这些抑制剂破坏P. aeruginosa的铁稳定,在组合疗法中显示出潜力.
科学领域:
- 细菌的铁稳态
- 蛋白质相互作用抑制剂
- 药物发现
背景情况:
- 细菌蛋白 (BfrB) 对于细菌的铁储存和恒温至关重要.
- 通过铁素 (Bfd) 从BfrB调动P. aeruginosa中的细胞酸铁水平.
- 针对蛋白质相互作用提供了一种新的治疗策略.
研究的目的:
- 开发BfrB-Bfd蛋白与蛋白相互作用的小分子抑制剂.
- 研究这些抑制剂对P. aeruginosa的铁稳定性和生长的影响.
- 评估这些抑制剂与抗生素结合的潜力.
主要方法:
- 基于碎片选的结构导向药物设计.
- 合成和表征4-替代的异印林-1,3-类型.
- 使用P. aeruginosa进行体外和体内测定,包括生长抑制和铁染色.
主要成果:
- 在Bfd结合部位选择性结合BfrB的同类物质.
- 抑制剂导致P. aeruginosa的剂量依赖性增长抑制和pyoverdin过度产生.
- 类似物导致BfrB中的铁积累和细胞质中的耗尽,由本地PAGE和FereneS染色证实.
- 与化类药物联合治疗显著降低了P.
结论:
- 针对BfrB-Bfd相互作用的小分子抑制剂有效地调节了细菌的铁平衡.
- 这些发现证明了向细菌铁储存中的蛋白-蛋白相互作用的概念.
- 已开发的类似药物可作为现有抗生素治疗的辅助药物.
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