经过工程设计的万科米辛,与基甘干的相互作用增加,征服了非结核性菌根菌
Christopher Vennard1,2, Temitope Oropo1, Herman O Sintim1,2,3
1Department of Chemistry, Purdue University, West Lafayette, Indiana 47907, United States.
Journal of medicinal chemistry
|July 21, 2023
概括
一种经过工程设计的万科米辛药物显示了与细菌丁糖甘 (PG) 的结合有所改善. 这种增强的药物在杀死真菌细菌方面表现出更高的有效性,提供了潜在的新疗法策略.
科学领域:
- 微生物学 微生物学
- 药物发现 药物发现 药物发现
- 结构生物学 结构生物学
背景情况:
- 范科米类抗生素通过结合糖 (PG) 前体的D-alanyl-D-alanine末端来向细菌细胞壁合成.
- 菌根菌具有独特的PG结构,影响抗生素易感性.
- 优化万科米辛与PG的结合可能会克服抵抗机制并提高疗效.
研究的目的:
- 为了设计一种与真菌菌菌酸甘油菌增强亲和力的万科米辛衍生物.
- 调查改善结合的结构基础.
- 为了评估工程范科米的抗菌活性对抗菌根菌.
主要方法:
- 范科米的局部定向突变发生,以产生具有改变结合性质的衍生物.
- 表面等离子体共振 (SPR) 用于测量与PG干的结合亲和力.
- 最低抑制度 (MIC) 测试以确定对菌根菌的抗菌活性.
主要成果:
- 改造的万科米辛显著增强了与含有美索-亚米诺皮米酸的PG干的结合亲和力.
- 增强的结合可能是由于与PG干的第三个残留物的额外相互作用.
- 与野生类型的万科米辛相比,人工菌素对菌根菌具有优越的杀菌活性.
结论:
- 修改万科米辛以准菌根PG干中的特定残留物可以增强药物亲和力.
- 这种工程菌素显示出作为一种强大的治疗药物对抗菌根的承诺.
- 进一步的开发可能会导致针对菌根菌感染的新型治疗方法.
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