来自人乳的Enterococcus faecalis HM20:一种潜在的替代抗菌剂,可以对抗抗甲素耐药黄金葡萄球菌 (MRSA) 产生抗菌作用
Eun-Ji Yi1, Trang Thi Minh Nguyen1, Xiangji Jin2
1Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Republic of Korea.
Microorganisms
|February 24, 2024
概括
来自人乳中的乳酸细菌 (LAB) 显示出对抗抗甲素耐药黄金葡萄球菌 (MRSA) 皮肤感染的希望. 被识别为Enterococcus faecalis HM20的HM20菌株有效抑制MRSA的生长和生物膜的形成.
科学领域:
- 微生物学 微生物学
- 皮肤病学 皮肤病学
- 生物技术是生物技术.
背景情况:
- 全球抗生素耐药细菌 (如MRSA) 导致的皮肤疾病的增加需要新的治疗策略.
- 乳酸细菌 (LAB) 为治疗皮肤感染提供了低毒性的替代品.
研究的目的:
- 从母乳中分离和描述具有针对MRSA的抗微生物活性的LAB.
- 为了评估选择的LAB菌株HM20对MRSA皮肤病原体的疗效.
主要方法:
- 从母乳中隔离LAB,进行抗菌查 (井扩散,微稀释).
- 生物膜抑制试验 (水晶紫),酶特性,SDS-PAGE,用于识别的16SrRNA测序.
- 扫描电子显微镜 (SEM) 用于可视化细菌细胞损伤.
主要成果:
- 人类牛奶衍生的LAB菌株HM20表现出对MRSA (S. aureus CCARM 3089) 的显著抗菌活性.
- HM20被确定为Enterococcus faecalis HM20;其无细胞超体 (CFS) 显示出强大的MIC值,并抑制了MRSA生物膜的形成.
- 归因于有机酸,过氧化和热稳定细菌素 (<5kDa) 的CFS抗菌作用;SEM证实了细胞壁损伤.
结论:
- Enterococcus faecalis HM20是开发针对MRSA皮肤感染的功能性材料的有希望的候选者.
- 这项研究为针对抗生素耐药细菌的新型抗菌战略提供了基础数据.
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