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抗菌活性和juglone对大肠杆菌,金黄色葡萄球菌和沙门氏杆菌的可能机制

Lei Wang¹, Mingxin Qiu¹, Xuanyue Li¹

¹Research Center for Biofeed and Animal Gut Health, College of Animal Science, Xinjiang Agricultural University, No.311 Nongda East Road, Urumqi, Xinjiang, 830052, China.

BMC microbiology

|October 17, 2025

概括

朱格隆通过破坏细胞膜和破坏新陈代谢过程,有效地对抗畜牧病原体大肠杆菌,金黄色葡萄球菌和沙门氏菌. 这种天然化合物为抗生素提供了一个有希望的替代品,解决了对抗菌素耐药性的担忧.

科学领域:

微生物学微生物学
自然产品化学自然产品化学
分子生物学分子生物学

背景情况:

牲畜和家禽面临着埃舍里希亚大肠杆菌,金黄色葡萄球菌和沙门氏杆菌等病原体的威胁.
抗生素耐药性需要探索替代抗菌剂.
朱格隆是一种天然化合物,表现出抗菌活性,但其机制需要阐明.

研究的目的:

为了研究juglone对关键细菌病原体的抗菌机制.
探索juglone对细菌细胞生物学,形态学和基因表达的影响.

主要方法:

最低抑制度 (MIC) 的确定.
评估代谢活性,细胞内成分 (DNA,RNA,ATP) 和酶活性.
扫描电子显微镜 (SEM) 用于细胞形态学.
对S. pullorum.进行转录组测序 (RNA-Seq) 和生物信息分析 (GO,KEGG).

主要成果:

朱格隆对大肠杆菌,黄金杆菌和杆菌具有强烈的抗菌活性,MIC为15.6μg/mL.
朱格隆治疗导致代谢活动降低,细胞内核酸和ATP含量降低,性酸酶和离子泄漏.
在S. pullorum中,SEM揭示了显著的膜损伤,而转录组学表明了与翻译,运输,能量代谢和定数感应相关的基因表达的改变.

结论:

朱格隆损害了细菌细胞包裹的完整性,导致细胞质泄漏和代谢功能障碍.
朱格隆调节S. pullorum中的基因表达,影响能量代谢,蛋白质合成,运输和质量检测,有助于其抗菌作用.

关键词:

抗微生物机制的抗微生物机制细胞结构细胞结构能量代谢能量代谢朱格隆是一个人.致病性细菌是一种致病性细菌.转录基因测序的测序

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