Biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia

Martin Pohland,1 Robert Glumm,1,2 Frank Wiekhorst,3 Jürgen Kiwit,4 Jana Glumm1,4 1Institute of Cell Biology and Neurobiology, Center for Anatomy, Charité – Universitätsmedizin Berlin, 2Clinic of Neurology, Jüdisches Krankenhaus, 3Department 8.2 Biosig...

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Autores principales:	Pohland M, Glumm R, Wiekhorst F, Kiwit J, Glumm J
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2017
Materias:	VSOP SPIO hippocampus organotypic viability Medicine (General) R5-920
Acceso en línea:	https://doaj.org/article/7256cae30b874b6b8b5696007108196f
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spelling	oai:doaj.org-article:7256cae30b874b6b8b5696007108196f2021-12-02T06:37:58ZBiocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia1178-2013https://doaj.org/article/7256cae30b874b6b8b5696007108196f2017-02-01T00:00:00Zhttps://www.dovepress.com/biocompatibility-of-very-small-superparamagnetic-iron-oxide-nanopartic-peer-reviewed-article-IJNhttps://doaj.org/toc/1178-2013Martin Pohland,1 Robert Glumm,1,2 Frank Wiekhorst,3 Jürgen Kiwit,4 Jana Glumm1,4 1Institute of Cell Biology and Neurobiology, Center for Anatomy, Charité – Universitätsmedizin Berlin, 2Clinic of Neurology, Jüdisches Krankenhaus, 3Department 8.2 Biosignals, Physikalisch-Technische Bundesanstalt, 4Clinic of Neurosurgery, HELIOS Klinikum Berlin Buch, Berlin, Germany Abstract: Superparamagnetic iron oxide nanoparticles (SPIO) are applied as contrast media for magnetic resonance imaging (MRI) and treatment of neurologic diseases despite the fact that important information concerning their local interactions is still lacking. Due to their small size, SPIO have great potential for magnetically labeling different cell populations, facilitating their MRI tracking in vivo. Before SPIO are applied, however, their effect on cell viability and tissue homoeostasis should be studied thoroughly. We have previously published data showing how citrate-coated very small superparamagnetic iron oxide particles (VSOP) affect primary microglia and neuron cell cultures as well as neuron-glia cocultures. To extend our knowledge of VSOP interactions on the three-dimensional multicellular level, we further examined the influence of two types of coated VSOP (R1 and R2) on murine organotypic hippocampal slice cultures. Our data show that 1) VSOP can penetrate deep tissue layers, 2) long-term VSOP-R2 treatment alters cell viability within the dentate gyrus, 3) during short-term incubation VSOP-R1 and VSOP-R2 comparably modify hippocampal cell viability, 4) VSOP treatment does not affect cytokine homeostasis, 5) microglial depletion decreases VSOP uptake, and 6) microglial depletion plus VSOP treatment increases hippocampal cell death during short-term incubation. These results are in line with our previous findings in cell coculture experiments regarding microglial protection of neurite branching. Thus, we have not only clarified the interaction between VSOP, slice culture, and microglia to a degree but also demonstrated that our model is a promising approach for screening nanoparticles to exclude potential cytotoxic effects. Keywords: VSOP, SPIO, hippocampus, organotypic, viability Pohland MGlumm RWiekhorst FKiwit JGlumm JDove Medical PressarticleVSOPSPIOhippocampusorganotypicviabilityMedicine (General)R5-920ENInternational Journal of Nanomedicine, Vol Volume 12, Pp 1577-1591 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	VSOP SPIO hippocampus organotypic viability Medicine (General) R5-920
spellingShingle	VSOP SPIO hippocampus organotypic viability Medicine (General) R5-920 Pohland M Glumm R Wiekhorst F Kiwit J Glumm J Biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia
description	Martin Pohland,1 Robert Glumm,1,2 Frank Wiekhorst,3 Jürgen Kiwit,4 Jana Glumm1,4 1Institute of Cell Biology and Neurobiology, Center for Anatomy, Charité – Universitätsmedizin Berlin, 2Clinic of Neurology, Jüdisches Krankenhaus, 3Department 8.2 Biosignals, Physikalisch-Technische Bundesanstalt, 4Clinic of Neurosurgery, HELIOS Klinikum Berlin Buch, Berlin, Germany Abstract: Superparamagnetic iron oxide nanoparticles (SPIO) are applied as contrast media for magnetic resonance imaging (MRI) and treatment of neurologic diseases despite the fact that important information concerning their local interactions is still lacking. Due to their small size, SPIO have great potential for magnetically labeling different cell populations, facilitating their MRI tracking in vivo. Before SPIO are applied, however, their effect on cell viability and tissue homoeostasis should be studied thoroughly. We have previously published data showing how citrate-coated very small superparamagnetic iron oxide particles (VSOP) affect primary microglia and neuron cell cultures as well as neuron-glia cocultures. To extend our knowledge of VSOP interactions on the three-dimensional multicellular level, we further examined the influence of two types of coated VSOP (R1 and R2) on murine organotypic hippocampal slice cultures. Our data show that 1) VSOP can penetrate deep tissue layers, 2) long-term VSOP-R2 treatment alters cell viability within the dentate gyrus, 3) during short-term incubation VSOP-R1 and VSOP-R2 comparably modify hippocampal cell viability, 4) VSOP treatment does not affect cytokine homeostasis, 5) microglial depletion decreases VSOP uptake, and 6) microglial depletion plus VSOP treatment increases hippocampal cell death during short-term incubation. These results are in line with our previous findings in cell coculture experiments regarding microglial protection of neurite branching. Thus, we have not only clarified the interaction between VSOP, slice culture, and microglia to a degree but also demonstrated that our model is a promising approach for screening nanoparticles to exclude potential cytotoxic effects. Keywords: VSOP, SPIO, hippocampus, organotypic, viability
format	article
author	Pohland M Glumm R Wiekhorst F Kiwit J Glumm J
author_facet	Pohland M Glumm R Wiekhorst F Kiwit J Glumm J
author_sort	Pohland M
title	Biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia
title_short	Biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia
title_full	Biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia
title_fullStr	Biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia
title_full_unstemmed	Biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia
title_sort	biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia
publisher	Dove Medical Press
publishDate	2017
url	https://doaj.org/article/7256cae30b874b6b8b5696007108196f
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Biocompatibility of very small superparamagnetic iron oxide nanoparticles in murine organotypic hippocampal slice cultures and the role of microglia

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