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A smart multi-functional coating based on anti-pathogen micelles tethered with copper nanoparticles via a biosynthesis method using l-vitamin C
A multi-functional anti-pathogen coating with “release-killing”, “contact-killing” and “anti-adhesion” properties was prepared from biocompatible polymer encapsulated chlorine dioxide (ClO(2)) which protected the active ingredient from the outside environment. A slow sustained-release of ClO(2) from...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080516/ https://www.ncbi.nlm.nih.gov/pubmed/35541145 http://dx.doi.org/10.1039/c8ra01985a |
Sumario: | A multi-functional anti-pathogen coating with “release-killing”, “contact-killing” and “anti-adhesion” properties was prepared from biocompatible polymer encapsulated chlorine dioxide (ClO(2)) which protected the active ingredient from the outside environment. A slow sustained-release of ClO(2) from micelles over fifteen days was detected for long-term release-killing. Micelles only release ClO(2) on demand in minimum inhibitory concentrations. We prepared nanoparticles which were covalently clustered on micelle surfaces to improve contact-killing as well as to improve the stability of the micelle. Copper nanoparticles were generated using the biosynthesis method including l-vitamin C, which avoids the toxicity and allows for the preparation of copper nanoparticles in a green environment. Synergistic anti-pathogen activity could be generated by a combination of micelle released ClO(2) and ascorbic acid. In addition to release-killing and contact-killing, a pluronic polymer coated surface also provides an additional “anti-adhesion” property through its protein-repelling ability. In this research, the designed coating demonstrated a broad-spectrum of activity to kill drug-resistant bacteria, viruses and spores in short period of time. Based on scanning electron microscopy (SEM), transmission electron microscopy (TEM) and anti-oxidase assays, we found that the designed coatings killed the pathogens via bio-oxidation. We also carried out acute respiratory toxicity tests in this research. Analysis of blood samples, lung function and histopathological slices indicated that the synthesized micelles allowed a controlled and sustained release of ClO(2) to kill pathogens while maintaining an overall ClO(2) concentration in the air within a safe range. |
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