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Silica@zirconia Core@shell Nanoparticles for Nucleic Acid Building Block Sorption

The development of delivery systems for the immobilization of nucleic acid cargo molecules is of prime importance due to the need for safe administration of DNA or RNA type of antigens and adjuvants in vaccines. Nanoparticles (NP) in the size range of 20–200 nm have attractive properties as vaccine...

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Autores principales: Naszályi Nagy, Livia, Dhaene, Evert, Van Zele, Matthias, Mihály, Judith, Klébert, Szilvia, Varga, Zoltán, Kövér, Katalin E., De Buysser, Klaartje, Van Driessche, Isabel, Martins, José C., Fehér, Krisztina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8468278/
https://www.ncbi.nlm.nih.gov/pubmed/34578482
http://dx.doi.org/10.3390/nano11092166
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author Naszályi Nagy, Livia
Dhaene, Evert
Van Zele, Matthias
Mihály, Judith
Klébert, Szilvia
Varga, Zoltán
Kövér, Katalin E.
De Buysser, Klaartje
Van Driessche, Isabel
Martins, José C.
Fehér, Krisztina
author_facet Naszályi Nagy, Livia
Dhaene, Evert
Van Zele, Matthias
Mihály, Judith
Klébert, Szilvia
Varga, Zoltán
Kövér, Katalin E.
De Buysser, Klaartje
Van Driessche, Isabel
Martins, José C.
Fehér, Krisztina
author_sort Naszályi Nagy, Livia
collection PubMed
description The development of delivery systems for the immobilization of nucleic acid cargo molecules is of prime importance due to the need for safe administration of DNA or RNA type of antigens and adjuvants in vaccines. Nanoparticles (NP) in the size range of 20–200 nm have attractive properties as vaccine carriers because they achieve passive targeting of immune cells and can enhance the immune response of a weakly immunogenic antigen via their size. We prepared high capacity 50 nm diameter silica@zirconia NPs with monoclinic/cubic zirconia shell by a green, cheap and up-scalable sol–gel method. We studied the behavior of the particles upon water dialysis and found that the ageing of the zirconia shell is a major determinant of the colloidal stability after transfer into the water due to physisorption of the zirconia starting material on the surface. We determined the optimum conditions for adsorption of DNA building blocks, deoxynucleoside monophosphates (dNMP), the colloidal stability of the resulting NPs and its time dependence. The ligand adsorption was favored by acidic pH, while colloidal stability required neutral-alkaline pH; thus, the optimal pH for the preparation of nucleic acid-modified particles is between 7.0–7.5. The developed silica@zirconia NPs bind as high as 207 mg dNMPs on 1 g of nanocarrier at neutral-physiological pH while maintaining good colloidal stability. We studied the influence of biological buffers and found that while phosphate buffers decrease the loading dramatically, other commonly used buffers, such as HEPES, are compatible with the nanoplatform. We propose the prepared silica@zirconia NPs as promising carriers for nucleic acid-type drug cargos.
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spelling pubmed-84682782021-09-27 Silica@zirconia Core@shell Nanoparticles for Nucleic Acid Building Block Sorption Naszályi Nagy, Livia Dhaene, Evert Van Zele, Matthias Mihály, Judith Klébert, Szilvia Varga, Zoltán Kövér, Katalin E. De Buysser, Klaartje Van Driessche, Isabel Martins, José C. Fehér, Krisztina Nanomaterials (Basel) Article The development of delivery systems for the immobilization of nucleic acid cargo molecules is of prime importance due to the need for safe administration of DNA or RNA type of antigens and adjuvants in vaccines. Nanoparticles (NP) in the size range of 20–200 nm have attractive properties as vaccine carriers because they achieve passive targeting of immune cells and can enhance the immune response of a weakly immunogenic antigen via their size. We prepared high capacity 50 nm diameter silica@zirconia NPs with monoclinic/cubic zirconia shell by a green, cheap and up-scalable sol–gel method. We studied the behavior of the particles upon water dialysis and found that the ageing of the zirconia shell is a major determinant of the colloidal stability after transfer into the water due to physisorption of the zirconia starting material on the surface. We determined the optimum conditions for adsorption of DNA building blocks, deoxynucleoside monophosphates (dNMP), the colloidal stability of the resulting NPs and its time dependence. The ligand adsorption was favored by acidic pH, while colloidal stability required neutral-alkaline pH; thus, the optimal pH for the preparation of nucleic acid-modified particles is between 7.0–7.5. The developed silica@zirconia NPs bind as high as 207 mg dNMPs on 1 g of nanocarrier at neutral-physiological pH while maintaining good colloidal stability. We studied the influence of biological buffers and found that while phosphate buffers decrease the loading dramatically, other commonly used buffers, such as HEPES, are compatible with the nanoplatform. We propose the prepared silica@zirconia NPs as promising carriers for nucleic acid-type drug cargos. MDPI 2021-08-25 /pmc/articles/PMC8468278/ /pubmed/34578482 http://dx.doi.org/10.3390/nano11092166 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Naszályi Nagy, Livia
Dhaene, Evert
Van Zele, Matthias
Mihály, Judith
Klébert, Szilvia
Varga, Zoltán
Kövér, Katalin E.
De Buysser, Klaartje
Van Driessche, Isabel
Martins, José C.
Fehér, Krisztina
Silica@zirconia Core@shell Nanoparticles for Nucleic Acid Building Block Sorption
title Silica@zirconia Core@shell Nanoparticles for Nucleic Acid Building Block Sorption
title_full Silica@zirconia Core@shell Nanoparticles for Nucleic Acid Building Block Sorption
title_fullStr Silica@zirconia Core@shell Nanoparticles for Nucleic Acid Building Block Sorption
title_full_unstemmed Silica@zirconia Core@shell Nanoparticles for Nucleic Acid Building Block Sorption
title_short Silica@zirconia Core@shell Nanoparticles for Nucleic Acid Building Block Sorption
title_sort silica@zirconia core@shell nanoparticles for nucleic acid building block sorption
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8468278/
https://www.ncbi.nlm.nih.gov/pubmed/34578482
http://dx.doi.org/10.3390/nano11092166
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