固体脂质纳米粒子配方最大限度地提高了抗微生物尼Z的膜破坏效率
Poonam Ratrey1, Shayon Bhattacharya2, Laura Coffey1
1Department of Chemical Sciences, SSPC the SFI Research Centre for Pharmaceuticals, Bernal Institute, University of Limerick, Limerick V94 T9PX, Ireland.
Colloids and surfaces. B, Biointerfaces
|September 20, 2024
概括
固体脂质纳米颗粒 (SLN) 增强了抗微生物Nisin Z.
科学领域:
- 纳米技术纳米技术
- 微生物学 微生物学
- 生物化学 生物化学
背景情况:
- 固体脂质纳米颗粒 (SLN) 提供了一个提供治疗剂的平台.
- 像尼Z这样的抗微生物 (AMP) 是有前途的,但需要有效的输送系统.
- 细菌感染,包括由黄金葡萄球菌引起的,需要新的治疗策略.
研究的目的:
- 为了评估SLN封装的尼Z对黄金葡萄球菌的疗效.
- 阐明通过SLN传递的尼辛Z的作用机制.
- 评估SLN配方在下一代抗生素中的潜力.
主要方法:
- 球形SLN的合成和表征 (尺寸为79.47 ± 2.01 nm,泽塔电位为-9.8 ± 0.3 mV).
- 使用细菌抑制试验和显微镜 (SEM,TEM) 评估尼Z载SLN抗菌活性.
- 通过流动细胞计和染料泄漏试验量化膜损伤.
- 模拟分子动力学以研究结合机制.
主要成果:
- 通过SLN配方,尼Z对S. aureus的抑制度降低了四倍.
- 与自由尼辛Z相比,尼辛Z载荷的SLN在细菌膜上诱导了更多和更大的孔隙.
- SLN配方加速了细菌细胞死亡,在30分钟内根除了所有细胞.
- 分子模拟揭示了尼Z通过SLN对细菌细胞壁前体的增强结合.
结论:
- SLN封装显著增强了尼Z的抗菌疗效.
- 脂质配方优化了尼Z的破坏膜的机制.
- 基于SLN的输送系统有可能开发强效,低度的抗生素来对抗抗菌素耐药性.
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