麦克罗拉克XY,一种来自海洋衍生菌 Bacillus subtilis sp. 的麦克罗拉克抗生素. 18 18 18 18 这是一个很大的问题
Yao Xu1, Yihao Song1, Yaodong Ning1
1Department of Biochemistry and Molecular Biology, College of Basic Medical Sciences, Naval Medical University, Shanghai 200433, China.
Marine drugs
|August 28, 2024
概括
海洋细菌*Bacillus subtilis*产生了新的化合物麦克罗拉克XY和一个二醇. 麦克罗拉克XY对*Enterococcus faecalis*具有强烈的抗菌活性,可能通过破坏细胞膜和能量代谢.
科学领域:
- 海洋天然产品 化学 化学
- 微生物学 微生物学
- 抗菌药物发现 抗菌药物发现
背景情况:
- 海洋环境是各种微生物的丰富来源,包括像 * Bacillus subtilis * 这样的细菌,它们产生新的生物活性化合物.
- 由于抗生素耐药性的威胁日益增加,寻找新的抗菌剂至关重要.
- 来自动菌和真菌的优化二次代谢物 (OSMAC) 策略对于隔离微生物二次代谢物是有效的.
研究的目的:
- 从海洋 *Bacillus subtilis* sp. 中分离和描述新的和已知的化合物. 18使用OSMAC战略.
- 评估与微生物小组对抗分离化合物的抗菌活性.
- 为了研究最强大的抗菌化合物对*Enterococcus faecalis*的作用机制.
主要方法:
- 使用OSMAC策略从* Bacillus subtilis* sp.中分离化合物. 18. 一十八,一个人.
- 阐明新化合物 (巨乳素XY和二醇) 的结构,并确定已知的化合物.
- 使用最小抑制度 (MIC) 测试进行抗菌活性查.
- 作用机制研究包括细胞膜潜力,SDS-PAGE电泳,细胞膜完整性检测和基因表达分析.
主要成果:
- 两种新的化合物,麦克罗拉克丁XY (1) 和 (5R,9S,10S)-5-(基甲基)-1,3,7-十三烯-9,10-二醇 (2),以及九种已知的化合物被分离出来.
- 化合物1-5和7-10表现出不同的抗菌活性,MIC值在3-12μg/mL之间.
- 麦克罗拉克XY (1) 显示出优越的活性,特别是对*Enterococcus faecalis*.
- 机制研究表明,麦克罗拉克丁XY破坏细菌细胞膜的完整性和透性,并抑制参与能量代谢的基因.
结论:
- 麦克罗拉克XY是一种强大的抗菌化合物,具有对*Enterococcus faecalis*有前途的作用机制.
- 这项研究为麦克罗拉克的抗菌潜力提供了宝贵的见解.
- 麦克罗拉克是开发新型抗菌前体的潜在来源.
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