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来自Bacillus subtilis的有希望的抗真菌脂:其特征和对作用模式的洞察力

Swetha Ramesh¹, Utpal Roy², Subhasish Roy³

¹Department of Biological Sciences, BITS Pilani K.K. Birla Goa Campus, NH 17B Bypass Road, Sancoale, Goa, 403726, India.

Applied microbiology and biotechnology

|January 22, 2024

概括

这项研究确定了一种新型的抗真菌脂,AF3,来自细菌细菌,对Candida albicans具有强大的活性. AF3显示生物相容性和破坏真菌细胞膜,显示作为一种新的抗真菌药物候选人的承诺.

科学领域:

微生物学微生物学
生物化学生物化学
药物发现药物发现药物发现

背景情况:

越来越多的抗真菌耐药性需要新的治疗药物.
脂是一种具有抗菌性能的有前途的自然化合物.

研究的目的:

描述从细菌细菌中分离出来的抗真菌脂AF3.
评估其作为潜在的抗真菌药物的疗效,作用机制和生物相容性.

主要方法:

循环二重化,FTIR和NMR光谱用于结构分析.
针对真菌菌株的最小抑制度 (MIC) 测定.
使用哺乳动物细胞进行生物相容性测试.
显微镜 (SEM,TEM,AFM) 和流细胞计测试以评估细胞损伤和膜完整性.
光探针 (AO/PI,FUN-1,DPH,di-8-ANEPPS,DCFH-DA) 用于研究膜透,脱极化和反应性氧物种 (ROS) 生产.

主要成果:

AF3表现出强大的抗真菌活性,低MIC (4-8 mg/L) 对测试的真菌菌株.
高哺乳动物细胞活力 (~80%) 在2x MIC表示良好的生物相容性.
AF3诱导了Candida albicans的显著超结构损伤,包括细胞形状和膜完整性的损失.
机制涉及膜透,脱极化,增加ROS产量,诱导细胞亡和DNA损伤.

结论:

脂AF3由于其破坏膜的活性和有利的生物相容性,显示出显著的抗真菌潜力.
由于AF3对蛋白质分解的稳定性及其多方面的作用机制,使其成为进一步开发抗真菌治疗药物的强有力的候选者.

关键词:

在 AFST AFST 中.这是一种Candida Candida.标志性描述标志性描述电子显微镜的电子显微镜这是一种脂类.膜活性活动的膜.作用方式作用方式

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