纳米粒子:降解剂对粒子稳定性和在生物度下抗菌活性的影响
Aneta Bužková1, Lucie Hochvaldová1, Renata Večeřová2
1Department of Physical Chemistry, Faculty of Science, Palacký University, 17. listopadu 1192/12, 779 00 Olomouc, Czech Republic. robert.prucek@upol.cz.
Nanoscale
|March 10, 2025
概括
稳定纳米粒子 (SeNPs) 提高了它们的寿命和抗菌有效性. 优化SeNPs显示强大的抗菌活性对金黄色葡萄球菌与低哺乳动物细胞毒性.
科学领域:
- 纳米技术 纳米技术
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
背景情况:
- 纳米粒子 (SeNPs) 显示出对抗微生物和抗癌应用的前景.
- 稳定性问题目前限制了SeNPs的广泛使用.
- 控制合成条件对于增强SeNP特性至关重要.
研究的目的:
- 研究反应条件如何影响SeNP的水分散,稳定性和生物活性.
- 评估各种减少和稳定剂对SeNP特性的影响.
- 确定稳定和有效的SeNP的最佳合成参数.
主要方法:
- 合成的SeNPs使用博化物 (强) 和酸 (温和) 降解剂.
- 使用的稳定剂:酸,奎尔,凝,聚乙烯胺和聚二甲基氨基).
- 评估了粒子随时间的稳定性,并评估了对哺乳动物细胞的抗菌活性和细胞毒性.
主要成果:
- 稳定SeNP分散保持稳定至少两个月,比非稳定 (2周) 长得多.
- 在低度 (1 mg L-1) 时,SeNPs表现出强烈的抗菌活性,对抗阳性细菌,特别是黄金葡萄球菌 (包括MRSA菌株).
- 用酸合成的SeNP表现出最小的细胞毒性 (EC50>100毫克L-1),而用酸减少的SeNP表现出更高的细胞毒性 (EC50 6.8毫克L-1).
结论:
- 反应条件,特别是减少剂和稳定剂的选择,极大地影响SeNP的稳定性和生物活性.
- 稳定SeNP为开发具有良好的安全概况的有效抗菌剂提供了一个有前途的平台.
- 进一步研究SeNPs和降解剂 (如甲酸) 的协同作用是有必要的,以优化治疗应用.
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