在生物功能中使用纳米粘土介导的晶相工程,以平衡抗菌性和细胞毒性
Menghan Yu1,2,3, Yunyang Liu1,2,3, Tianqi Liao1,2,3
1Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, China.
Nano letters
|January 28, 2025
概括
天然滑石泥使氧化物纳米颗粒的晶相工程成为可能,增强了抗菌活性,并减少了先进的伤口愈合应用中的毒性.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 生物医学工程 生物医学工程
背景情况:
- 金属氧化物纳米材料中的晶体相对其特性和功能有重大影响.
- 控制相位多样性的晶体形态仍然是传统合成方法的一个重大挑战.
研究的目的:
- 开发一种以纳米粘土为媒介的战略,用于氧化物 (MnOx) 纳米粒子的晶相工程.
- 为了增强氧化酶活性,抗微生物疗效和MnOx纳米颗粒的细胞兼容性,使用石粉.
主要方法:
- 利用滑石粉作为纳米粘土介质,用于氧化物纳米颗粒的晶相工程.
- 研究了MnOx纳米粒子的形态学和相调节.
- 进行理论计算以了解Mn3O4/MnOOH接口增强氧激活的机制.
- 评估了抗微生物活性,细胞毒性和 in vitro 和 in vivo 的伤口愈合潜力.
主要成果:
- 塔尔克调节的MnOx复合物 (M/T) 呈现出增强的氧化酶活性.
- M/T-190对大肠杆菌和黄金葡萄球菌具有99%的杀菌活性,细胞相容性为84%.
- 理论计算表明,粉调节电荷分布和d频段中心,改善氧气激活.
- 将M/T整合到布中显示出显著的抗菌活性,低毒性,并促进了伤口愈合.
结论:
- 塔尔克介导晶相工程为开发先进纳米材料提供了一种新的方法.
- 工程设计的MnOx纳米颗粒对生物医学应用,特别是伤口愈合有很大的前景.
- 在纳米材料设计中,可以利用天然矿物质进行复杂的晶相控制.
相关概念视频
01:29Biofilms
Biofilms are complex communities of microorganisms encased in a self-produced extracellular polysaccharide matrix attached to surfaces. These microbial consortia can include single or multiple species, providing enhanced survival benefits by forming organized, multilayered structures.The formation of biofilms occurs through four key stages: attachment, colonization, development, and dispersal.During attachment, free-swimming planktonic cells adhere to a surface, often facilitated by...
01:24Microbial Corrosion
Microbiologically Influenced Corrosion (MIC) is a significant form of material degradation caused by the metabolic activities of microorganisms. This phenomenon poses substantial challenges across various industries, including oil and gas, maritime, and water treatment sectors.MIC occurs when microorganisms, such as bacteria, archaea, and fungi, colonize metal surfaces, forming biofilms that alter the local electrochemical environment. These biofilms can lead to the production of corrosive...