当前位置: X-MOL 学术Small › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
In Situ Fabrication of Ultrasmall Gold Nanoparticles/2D MOFs Hybrid as Nanozyme for Antibacterial Therapy.
Small ( IF 13.0 ) Pub Date : 2020-05-05 , DOI: 10.1002/smll.202000553
Wen-Chao Hu 1 , Muhammad Rizwan Younis 2 , Yue Zhou 2 , Chen Wang 1 , Xing-Hua Xia 2
Affiliation  

As one of the common reactive oxygen species, H2O2 has been widely used for combating pathogenic bacterial infections. However, the high dosage of H2O2 can induce undesired damages to normal tissues and delay wound healing. In this regard, peroxidase‐like nanomaterials serve as promising nanozymes, thanks to their positive promotion toward the antibacterial performance of H2O2, while avoiding the toxicity caused by the high concentrations of H2O2. In this work, ultrasmall Au nanoparticles (UsAuNPs) are grown on ultrathin 2D metal–organic frameworks (MOFs) via in situ reduction. The formed UsAuNPs/MOFs hybrid features both the advantages of UsAuNPs and ultrathin 2D MOFs, displaying a remarkable peroxidase‐like activity toward H2O2 decomposition into toxic hydroxyl radicals (·OH). Results show that the as‐prepared UsAuNPs/MOFs nanozyme exhibits excellent antibacterial properties against both Gram‐negative (Escherichia coli ) and Gram‐positive (Staphylococcus aureus ) bacteria with the assistance of a low dosage of H2O2. Animal experiments indicate that this hybrid material can effectively facilitate wound healing with good biocompatibility. This study reveals the promising potential of a hybrid nanozyme for antibacterial therapy and holds great promise for future clinical applications.

中文翻译:

原位制备超小金纳米粒子/ 2D MOFs杂合体作为用于抗菌治疗的纳米酶。

作为常见的活性氧之一,H 2 O 2已被广泛用于抵抗病原性细菌感染。但是,高剂量的H 2 O 2会对正常组织造成不希望的损害并延迟伤口愈合。在这方面,过氧化物酶样纳米材料由于对H 2 O 2的抗菌性能有积极促进作用,同时又避免了高浓度H 2 O 2引起的毒性,因此成为有前途的纳米酶。。在这项工作中,超细金纳米颗粒(UsAuNPs)通过原位还原在超薄二维金属有机框架(MOF)上生长。形成的UsAuNPs / MOFs杂物兼具UsAuNPs和超薄2D MOF的优点,显示出对H 2 O 2分解成有毒羟基自由基(·OH)的过氧化物酶样活性。结果表明,所制备的UsAuNPs / MOFs纳米在低剂量的H 2 O 2的辅助下对革兰氏阴性金黄色葡萄球菌均表现出优异的抗菌性能。。动物实验表明,这种杂合材料可以有效促进伤口愈合,并具有良好的生物相容性。这项研究揭示了杂合纳米酶在抗菌治疗中的潜在潜力,并为未来的临床应用带来了广阔的前景。
更新日期:2020-05-05
down
wechat
bug