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基于Ceria的化学调节人工氧化酶,增强抗菌活性和生物膜抑制

Xiaoyan He^1,2, Dan Su², Xiuqin Bai^1,2

¹Hubei Longzhong Laboratory, Wuhan University of Technology Xiangyang Demonstration Zone, Xiangyang 441000, China.

ACS applied materials & interfaces

|May 31, 2024

概括

具有类似氧化酶活性的Ceria纳米颗粒显示出作为抗污染剂的前景. 在最佳水平上添加3,4-Dihydroxy-l-phenylalanine (DOPA) 增强了它们的抗菌和生物膜抑制特性.

科学领域:

材料科学材料科学材料科学
生物技术是生物技术.
环境科学环境科学

背景情况:

(CeO₂) 纳米颗粒具有类似氧化酶 (HPO) 的活性,使其适合生物良性防应用.
3,4-二基-l-氨 (DOPA) 是类粘合蛋白中的关键成分,在生物污染中发挥作用.
在DOPA和CeO₂纳米颗粒之间的相互作用及其对抗污染性能的影响还不太清楚.

研究的目的:

为了研究DOPA和CeO₂纳米粒子之间的相互作用.
评估DOPA吸附对CeO₂纳米颗粒的HPO类活性和抗污染性能的影响.
探索DOPA-CeO₂纳米复合材料作为抗菌和抗生物膜剂的潜力.

主要方法:

DOPA-CeO₂纳米复合物的合成和表征.
通过光谱光度测试评估HPO类活性.
使用细菌培养物对抗菌活性的评估.
生物膜抑制试验用于量化抗生物膜性能.
测量泽塔电位,以了解表面电荷的特性.

主要成果:

在CeO₂上的DOPA吸附导致Ce³⁺分数增加,并且由于电子转移,带隙能量减少.
尽管暴露的Ce³⁺影响HPO类活性的部位略有减少,但DOPA-CeO₂纳米复合材料显示出抗菌和生物膜抑制能力.
一种0.1%的DOPA-CeO₂纳米复合物表现出增强的抗菌活性和优异的生物膜抑制,这是由于其类似HPO的活性和积极的泽塔潜力.

结论:

DOPA可以调节CeO₂纳米颗粒的特性,影响它们的HPO类活性和抗污染性能.
在适当的度下,DOPA可以增强CeO纳米颗粒的抗菌和抗效果.
DOPA-CeO₂纳米复合材料对于需要抗菌和抗生物污染特性的应用具有显著的潜力,特别是在海洋环境中.

关键词:

这就是CeO2 .多巴多巴 (DOPA) 是一种药物.它是一种抗菌药物,具有抗菌作用.具有类似氧化酶的活性.检验人数感应信号传输系统

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