来自内性真菌Alternaria sp. 的阿尔特纳里奥尔. S4作为一种向膜的杀菌剂,对抗金黄色葡萄球菌 (Staphylococcus aureus)
Yanlin He1, Yuwan Zhang1, Wei Wang2
1College of Materials, Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China; College of Ecological Environment, Chengdu University of Technology, Chengdu 610059, China.
Bioorganic & medicinal chemistry letters
|December 25, 2025
概括
替代醇是一种内性真菌化合物,通过向其细胞膜,有效地杀死金黄色葡萄球菌. 这种化合物还可以防止和破坏细菌生物膜,为新的抗生素疗法显示出希望.
科学领域:
- 微生物学 微生物学
- 自然产品化学 自然产品化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 像Alternaria sp. 这样的内菌. 来自Ruta graveolens的S4是新型抗菌化合物的来源.
- 澄清Alternaria sp.的活性化合物和作用机制. S4对于开发新疗法至关重要.
研究的目的:
- 从Alternaria sp.中分离和识别抗菌化合物. 在S4.4中,它是S4.
- 阐明分离的化合物对黄金葡萄球菌的杀菌作用机制.
- 评估活性化合物的抗生物膜活性和安全概况.
主要方法:
- 使用生物试验指导分化来分离活性化合物.
- 用光谱方法进行结构性表征.
- 使用MIC,MBC和时间生长试验评估了抗菌活性.
- 机械学研究包括膜脱极化,透性测试,SEM和生物膜抑制测试.
- 血液溶解活性被评估以评估选择性.
主要成果:
- 异醇 (1) 被分离出来,并表现出强大的杀菌活性,对黄金葡萄球菌 (MIC = 4μg/mL,MBC = 16μg/mL).
- 替代醇 (1) 通过向细菌膜来起作用,导致脱极化,增加透性和超结构损伤.
- 替代醇 (1) 有效地抑制了生物膜的形成,并破坏了预先形成的生物膜.
- 该化合物没有表现出血解活性,表明膜选择性.
- 当与常规抗生素结合使用时,观察到添加效应.
结论:
- 阿尔特纳里是一种强大的,向膜的杀菌剂,从内菌中分离出来.
- 阿尔特纳里具有显著的抗生物膜特性,并有可能用于对抗黄金葡萄球菌的组合疗法.
- 它的选择性膜向和安全概况使其成为进一步药物开发的有希望的候选者.
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