抗生素的延续是基于细胞的抗微生物研究应用的困扰因素
Miran Yousri Elfar1, Helen Louise Brown2, Aled Clayton3
1School of Dentistry, Cardiff University, Health Park Campus, Cardiff, CF14 4XY, UK.
Scientific reports
|August 3, 2025
概括
来自组织培养的条件介质 (CM) 可能会由于残留抗生素而不是细胞因子而表现出抗菌作用. 仔细控制细胞培养中的抗生素对于准确的细胞外囊泡 (EV) 研究至关重要.
科学领域:
- 微生物学 微生物学
- 细胞生物学 细胞生物学
- 生物技术是生物技术.
背景情况:
- 慢性伤口经常含有金黄色葡萄球菌,需要新的抗菌药物和伤口愈合策略.
- 细胞外囊泡 (EVs) 是治疗开发的一个有希望的领域,但它们的隔离依赖于条件介质 (CM).
- EV隔离技术的标准化正在增加,但CM采集的上游组织培养方法受到的审查较少.
研究的目的:
- 研究用于细胞外囊泡 (EV) 丰富的条件介质 (CM) 的抗菌特性.
- 确定CM中观察到的抗微生物活性来源.
- 评估抗生素转移对CM抗菌潜力的影响.
主要方法:
- 培养细胞以收集条件介质 (CM).
- 测试CM对对青素敏感和抗青素抗性黄金葡萄球菌菌株的细菌静止作用.
- 分析CM成分以确定抗微生物因素,包括残留抗生素.
- 评估预洗细胞和降低抗生素度对CM抗菌活性的影响.
主要成果:
- 在CM的研究中,它对对青素敏感的金黄色菌株有细菌静止作用,但对青素耐药菌株没有.
- 观察到的抗微生物活性归因于组织培养塑料中保留和释放的剩余青素,而不是细胞分泌的因素.
- 预先洗细胞,并在基底介质中使用较低的抗生素度,减轻了抗生素转移效应.
结论:
- 条件介质中的残留抗生素可能被误认为是细胞分泌因子或细胞外囊泡的固有抗菌性质.
- 控制组织培养中的抗生素使用对于防止在抗微生物和治疗评估中误导结果至关重要.
- 准确确定CM的抗菌机制对于验证未来基于细胞的治疗应用,包括涉及EVs的应用,至关重要.
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