防止生物膜的形成和根除致病细菌由Zn杂的histidine衍生的碳量子点
Vijay Bhooshan Kumar1, Maoz Lahav1, Ehud Gazit1,2,3
1The Shmunis School of Biomedicine and Cancer Research, George S. Wise Faculty of Life Sciences, Tel Aviv University, 6997801, Tel Aviv, Israel. ehudga@tauex.tau.ac.il.
Journal of materials chemistry. B
|February 28, 2024
概括
新的添加碳量子点 (Zn-NCDs) 有效抑制细菌生长和生物膜形成. 这些纳米材料对哺乳动物细胞的毒性较低,为传统抗生素提供了有希望的替代品.
科学领域:
- 生物材料科学 生物材料科学
- 纳米技术 纳米技术
- 抗菌研究 抗菌研究
背景情况:
- 抗生素耐药性对全球健康构成重大威胁.
- 碳量子点 (CD) 具有可取的特性,如低毒性,水溶性和光,用于生物医学应用.
- 磁盘显示出抑制细菌生长和生物膜形成的潜力.
研究的目的:
- 通过热水方法合成由衍生的化N-化CD (Zn-NCDs).
- 评估Zn-NCDs对阳性和阴性细菌的抗菌疗效.
- 评估Zn-NCD与哺乳动物细胞的生物相容性及其生物成像潜力.
主要方法:
- 一个液热合成N-化CD和Zn-NCD.
- 合成纳米材料的尺寸,结晶性,光稳定性,量子产量和衰变时间的表征.
- 在体外测试抗菌活性对*黄金葡萄球菌*和空气菌的*测试.
- 生物膜抑制和透能力的评估.
- 对哺乳动物细胞的细胞毒性评估.
主要成果:
- 均大小 (∼6 nm) 的NCD和Zn-NCD被成功合成.
- Zn-NCDs显示出高量子产率 (76%) 和长衰变时间 (∼5 ns).
- 观察到有效抑制了格拉姆阳性和格拉姆阴性细菌的生长.
- Zn-NCDs成功地穿透了细菌细胞壁和生物膜,抑制了生长和形成.
- 在哺乳动物细胞中没有观察到显著的毒性.
结论:
- 丁衍生的Zn-NCDs通过热水方法有效合成.
- Zn-NCDs表现出强大的广泛抗菌活性和生物膜抑制.
- Zn-NCDs的低毒性和有效的抗菌性质将它们定位为有前途的纳米抗菌剂.
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