针对体内黄金葡萄球菌生物膜的非传播性纳米战略
Rita M Pinto1,2, Saleh Yazdani2, Catarina Leal Seabra1
1LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, 4050-313, Porto, Portugal.
NPJ biofilms and microbiomes
|June 16, 2023
概括
这项研究开发了一种新型纳米系统,通过破坏细胞外聚合物质 (EPS) 基质来对抗金黄色葡萄球菌生物膜. 结合caspofungin和moxifloxacin纳米颗粒有效地减少了生物膜,并防止了细菌在体内传播.
科学领域:
- 纳米技术纳米技术
- 微生物学 微生物学
- 传染性疾病 传染性疾病
背景情况:
- 黄金葡萄球菌 (Staphylococcus aureus) 是一种高优先级的病原体,以形成生物膜而闻名.
- 目前针对S. aureus生物膜感染的治疗方法不针对细胞外聚合物质 (EPS) 基质,这是抗微生物药物的障碍.
- EPS矩阵有助于增加S. aureus生物膜中的抗菌素耐受性.
研究的目的:
- 开发一种使用脂纳米颗粒封装caspofungin (CAS) 的矩阵破坏性纳米系统.
- 创建一个多目标纳米战略,将CAS载荷纳米粒子与moxifloxacin载荷纳米系统相结合,以破坏EPS矩阵.
- 评估这种纳米策略对S. aureus生物膜的疗效,在体外和体内.
主要方法:
- 开发D-氨基酸功能化脂质纳米颗粒封装caspofungin.
- 结合卡斯波金载荷纳米颗粒与莫西素载荷纳米系统,用于协同破坏生物膜.
- 在体外和体内研究以评估生物膜减少和细菌传播.
- 在腹膜内注射后的体内生物分布研究.
主要成果:
- 组合的纳米系统在体外和体内证明了S. aureus生物膜的显著减少.
- 组合疗法防止细菌扩散到小鼠的重要器官,与自由化合物不同.
- 在体内生物分布研究证实了纳米系统在生物膜区域的积累.
结论:
- 开发的纳米策略有效地准并破坏金黄色菌生物膜.
- 在纳米系统中封装矩阵破坏性和抗菌剂是对S. aureus生物膜的一种有希望的方法.
- 这种方法提高了治疗结果,并降低了细菌传播的风险.
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