GlcNAc-1,6-anhydro-MurNAc 组合提供了异常的葡萄糖受体,可以终止甘延长
Xiao-Lin Zhang1, Gábor Báti1, Chenyu Li1
1School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, Singapore 637371, Singapore.
Journal of the American Chemical Society
|March 8, 2024
概括
研究人员开发出一种新型无水素,通过终止甘延长来抑制细菌细胞壁的合成. 这些化合物具有作为新抗菌剂的潜力,包括作为现有抗生素的辅助剂.
科学领域:
- 微生物学和生物化学
- 医学化学
- 抗生素的开发
背景情况:
- 糖素 (PG) 是一种关键的细菌外骨聚合物,也是已验证的抗生素向物.
- 细菌转糖酶 (TGases) 对于PG聚合是必不可少的,它催化了糖基受体与供体的合.
- 目前的TGase抑制剂主要针对活性部位;抑制PG延长的替代策略尚未得到充分研究.
研究的目的:
- 研究将含有无水的糖受体纳入糖以抑制细菌生长的可能性.
- 合成和评估新型无水素作为潜在的TGase抑制剂和抗菌剂.
主要方法:
- 在15个步骤内合成一种新型无水uropeptide (化合物1) 和其缺乏类型 (1-deAA).
- 在实验室中评估化合物1和1-deAA作为细菌TGases的非正规糖受体.
- 对无水甲基组合并对糖链延伸的影响的评估
- 对1-deAA的初步体外抗菌研究,针对黄金葡萄球菌,与菌素结合使用.
主要成果:
- 这两种合成的无水素 (1和1-deAA) 在实验室中被细菌TGase用作非正规的糖受体.
- 加入无水甲基有效地终止了细菌糖链的延伸.
- 化合物1-deAA被证明具有作为抗菌辅助剂的潜力,当与菌素一起使用时,可以对抗金黄色葡萄球菌.
结论:
- 无水素可以通过干扰TGase活性和停止糖延长而作为PG终结抑制剂.
- 这些发现表明针对糖体合成的抗菌剂的新策略.
- 合成的无水素是一种有前途的新类抑制剂,具有潜在的治疗应用.
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