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Elucidating the Function of Penetratin and a Static Magnetic Field in Cellular Uptake of Magnetic Nanoparticles

Nanotechnology plays an increasingly important role in the biomedical arena. In particular, magnetic nanoparticles (mNPs) have become important tools in molecular diagnostics, in vivo imaging and improved treatment of disease, with the ultimate aim of producing a more theranostic approach. Due to th...

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Autores principales: Chaudhary, Suman, Smith, Carol Anne, del Pino, Pablo, de la Fuente, Jesus M., Mullin, Margaret, Hursthouse, Andrew, Stirling, David, Berry, Catherine C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3816682/
https://www.ncbi.nlm.nih.gov/pubmed/24275948
http://dx.doi.org/10.3390/ph6020204
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author Chaudhary, Suman
Smith, Carol Anne
del Pino, Pablo
de la Fuente, Jesus M.
Mullin, Margaret
Hursthouse, Andrew
Stirling, David
Berry, Catherine C.
author_facet Chaudhary, Suman
Smith, Carol Anne
del Pino, Pablo
de la Fuente, Jesus M.
Mullin, Margaret
Hursthouse, Andrew
Stirling, David
Berry, Catherine C.
author_sort Chaudhary, Suman
collection PubMed
description Nanotechnology plays an increasingly important role in the biomedical arena. In particular, magnetic nanoparticles (mNPs) have become important tools in molecular diagnostics, in vivo imaging and improved treatment of disease, with the ultimate aim of producing a more theranostic approach. Due to their small sizes, the nanoparticles can cross most of the biological barriers such as the blood vessels and the blood brain barrier, thus providing ubiquitous access to most tissues. In all biomedical applications maximum nanoparticle uptake into cells is required. Two promising methods employed to this end include functionalization of mNPs with cell-penetrating peptides to promote efficient translocation of cargo into the cell and the use of external magnetic fields for enhanced delivery. This study aimed to compare the effect of both penetratin and a static magnetic field with regards to the cellular uptake of 200 nm magnetic NPs and determine the route of uptake by both methods. Results demonstrated that both techniques increased particle uptake, with penetratin proving more cell specific. Clathrin- medicated endocytosis appeared to be responsible for uptake as shown via PCR and western blot, with Pitstop 2 (known to selectively block clathrin formation) blocking particle uptake. Interestingly, it was further shown that a magnetic field was able to reverse or overcome the blocking, suggesting an alternative route of uptake.
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spelling pubmed-38166822013-11-14 Elucidating the Function of Penetratin and a Static Magnetic Field in Cellular Uptake of Magnetic Nanoparticles Chaudhary, Suman Smith, Carol Anne del Pino, Pablo de la Fuente, Jesus M. Mullin, Margaret Hursthouse, Andrew Stirling, David Berry, Catherine C. Pharmaceuticals (Basel) Article Nanotechnology plays an increasingly important role in the biomedical arena. In particular, magnetic nanoparticles (mNPs) have become important tools in molecular diagnostics, in vivo imaging and improved treatment of disease, with the ultimate aim of producing a more theranostic approach. Due to their small sizes, the nanoparticles can cross most of the biological barriers such as the blood vessels and the blood brain barrier, thus providing ubiquitous access to most tissues. In all biomedical applications maximum nanoparticle uptake into cells is required. Two promising methods employed to this end include functionalization of mNPs with cell-penetrating peptides to promote efficient translocation of cargo into the cell and the use of external magnetic fields for enhanced delivery. This study aimed to compare the effect of both penetratin and a static magnetic field with regards to the cellular uptake of 200 nm magnetic NPs and determine the route of uptake by both methods. Results demonstrated that both techniques increased particle uptake, with penetratin proving more cell specific. Clathrin- medicated endocytosis appeared to be responsible for uptake as shown via PCR and western blot, with Pitstop 2 (known to selectively block clathrin formation) blocking particle uptake. Interestingly, it was further shown that a magnetic field was able to reverse or overcome the blocking, suggesting an alternative route of uptake. MDPI 2013-02-06 /pmc/articles/PMC3816682/ /pubmed/24275948 http://dx.doi.org/10.3390/ph6020204 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. http://creativecommons.org/licenses/by/3.0/ This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Chaudhary, Suman
Smith, Carol Anne
del Pino, Pablo
de la Fuente, Jesus M.
Mullin, Margaret
Hursthouse, Andrew
Stirling, David
Berry, Catherine C.
Elucidating the Function of Penetratin and a Static Magnetic Field in Cellular Uptake of Magnetic Nanoparticles
title Elucidating the Function of Penetratin and a Static Magnetic Field in Cellular Uptake of Magnetic Nanoparticles
title_full Elucidating the Function of Penetratin and a Static Magnetic Field in Cellular Uptake of Magnetic Nanoparticles
title_fullStr Elucidating the Function of Penetratin and a Static Magnetic Field in Cellular Uptake of Magnetic Nanoparticles
title_full_unstemmed Elucidating the Function of Penetratin and a Static Magnetic Field in Cellular Uptake of Magnetic Nanoparticles
title_short Elucidating the Function of Penetratin and a Static Magnetic Field in Cellular Uptake of Magnetic Nanoparticles
title_sort elucidating the function of penetratin and a static magnetic field in cellular uptake of magnetic nanoparticles
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3816682/
https://www.ncbi.nlm.nih.gov/pubmed/24275948
http://dx.doi.org/10.3390/ph6020204
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