A novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity

Abstract Cerium oxide nanoparticles (CNPs) are novel synthetic antioxidant agents proposed for treating oxidative stress-related diseases. The synthesis of high-quality CNPs for biomedical applications remains a challenging task. A major concern for a safe use of CNPs as pharmacological agents is th...

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Main Authors:	Fanny Caputo, Marta Mameli, Andrzej Sienkiewicz, Silvia Licoccia, Francesco Stellacci, Lina Ghibelli, Enrico Traversa
Format:	article
Language:	EN
Published:	Nature Portfolio 2017
Subjects:	Medicine R Science Q
Online Access:	https://doaj.org/article/17ac40f4c50e4ad2b1e9acb342aa0e45
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spelling	oai:doaj.org-article:17ac40f4c50e4ad2b1e9acb342aa0e452021-12-02T16:08:13ZA novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity10.1038/s41598-017-04098-62045-2322https://doaj.org/article/17ac40f4c50e4ad2b1e9acb342aa0e452017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04098-6https://doaj.org/toc/2045-2322Abstract Cerium oxide nanoparticles (CNPs) are novel synthetic antioxidant agents proposed for treating oxidative stress-related diseases. The synthesis of high-quality CNPs for biomedical applications remains a challenging task. A major concern for a safe use of CNPs as pharmacological agents is their tendency to agglomerate. Herein we present a simple direct precipitation approach, exploiting ethylene glycol as synthesis co-factor, to synthesize at room temperature nanocrystalline sub-10 nm CNPs, followed by a surface silanization approach to improve nanoparticle dispersibility in biological fluids. CNPs were characterized using transmission electron microscopy (TEM) observations, X-ray diffraction (XRD) analysis, thermogravimetric analysis (TGA), Fourier-transform infrared (FT-IR) spectroscopy, proton nuclear magnetic resonance (1H-NMR) spectroscopy, dynamic light scattering (DLS) and zeta potential measurements. CNP redox activity was studied in abiotic systems using electron spin resonance (ESR) measurements, and in vitro on human cell models. In-situ silanization improved CNP colloidal stability, in comparison with non-functionalized particles, and allowed at the same time improving their original biological activity, yielding thus functionalized CNPs suitable for biomedical applications.Fanny CaputoMarta MameliAndrzej SienkiewiczSilvia LicocciaFrancesco StellacciLina GhibelliEnrico TraversaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-13 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Fanny Caputo Marta Mameli Andrzej Sienkiewicz Silvia Licoccia Francesco Stellacci Lina Ghibelli Enrico Traversa A novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity
description	Abstract Cerium oxide nanoparticles (CNPs) are novel synthetic antioxidant agents proposed for treating oxidative stress-related diseases. The synthesis of high-quality CNPs for biomedical applications remains a challenging task. A major concern for a safe use of CNPs as pharmacological agents is their tendency to agglomerate. Herein we present a simple direct precipitation approach, exploiting ethylene glycol as synthesis co-factor, to synthesize at room temperature nanocrystalline sub-10 nm CNPs, followed by a surface silanization approach to improve nanoparticle dispersibility in biological fluids. CNPs were characterized using transmission electron microscopy (TEM) observations, X-ray diffraction (XRD) analysis, thermogravimetric analysis (TGA), Fourier-transform infrared (FT-IR) spectroscopy, proton nuclear magnetic resonance (1H-NMR) spectroscopy, dynamic light scattering (DLS) and zeta potential measurements. CNP redox activity was studied in abiotic systems using electron spin resonance (ESR) measurements, and in vitro on human cell models. In-situ silanization improved CNP colloidal stability, in comparison with non-functionalized particles, and allowed at the same time improving their original biological activity, yielding thus functionalized CNPs suitable for biomedical applications.
format	article
author	Fanny Caputo Marta Mameli Andrzej Sienkiewicz Silvia Licoccia Francesco Stellacci Lina Ghibelli Enrico Traversa
author_facet	Fanny Caputo Marta Mameli Andrzej Sienkiewicz Silvia Licoccia Francesco Stellacci Lina Ghibelli Enrico Traversa
author_sort	Fanny Caputo
title	A novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity
title_short	A novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity
title_full	A novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity
title_fullStr	A novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity
title_full_unstemmed	A novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity
title_sort	novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/17ac40f4c50e4ad2b1e9acb342aa0e45
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A novel synthetic approach of cerium oxide nanoparticles with improved biomedical activity

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