有着l尾部立体化学的Teixobactin"Swapmers"保留了抗生素活性
James H Griffin1, Ana-Teresa Mendoza1, James S Nowick1,2
1Department of Chemistry, University of California─Irvine, Irvine, California 92697, United States.
The Journal of organic chemistry
|September 30, 2024
概括
研究人员通过将d-氨基酸换成l-氨基酸来修改抗生素teixobactin. 这保持了抗生素活性,但N端修改取消了它.
科学领域:
- 药用化学 医学化学
- 类抗生素 抗生素 类抗生素
- 有机化学 有机化学
背景情况:
- 类抗生素teixobactin表现出强大的抗菌活性.
- 它独特的d-l-l-d-d-l-l立体化学模式对其两性β片结构和作用机制至关重要.
研究的目的:
- 为了研究teixobactin尾巴中用l-氨基酸取代d-氨基酸的影响.
- 为了确定两性和抗生素活性是否可以在改变的立体化学条件下保持.
主要方法:
- 合成teixobactin的O-acyl异类前药物.
- 特定残留物 (d-Gln4和d-allo-Ile5) 的立体化学修改为它们的l-enantiomers.
- 对抗生素活性和两性质的评估.
主要成果:
- 将d-Gln4和d-allo-Ile5交换为O-acyl异类预药中的l-氨基酸,保留了teixobactin的抗生素活性.
- 对N-终端立体化学的修改导致抗生素活性完全丧失.
- 维护了两性β叶状结构,并进行了特定的尾部修改.
结论:
- 在teixobactin的尾部中,特定的d-氨基酸可以被l-氨基酸取代,而不会影响抗生素的疗效.
- 对于teixobactin的抗菌功能来说,N端的立体化学是必不可少的.
- O-acyl isopeptide 前药为修改teixobactin的立体化学提供了一个可行的策略.
相关概念视频
Combined Effects of Drugs: Synergism
3.8K
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...
3.8K
Types of RNA
63.3K
Overview
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in the regulation of gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA...
63.3K
Antibiotic Selection
52.4K
Overview
52.4K


