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Biosynthesis of magnetic nanoparticles by human mesenchymal stem cells following transfection with the magnetotactic bacterial gene mms6

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Elfick_2017_Biosynthesis_SREP_39755_CC.pdf (793.2Kb)
Date
04/01/2017
Author
Elfick, Alistair
Rischitor, Grigore
Mouras, Rabah
Azfer, Asim
Lungaro, Lisa
Uhlarz, Marc
Herrmannsdörfer, Thomas
Lucocq, John Milton
Gamal, Wesam
Bagnaninchi, Pierre
Semple, Scott
Salter, Donald M.
Keywords
QH301 Biology
RC0254 Neoplasms. Tumors. Oncology (including Cancer)
RM Therapeutics. Pharmacology
NDAS
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Abstract
The use of stem cells to support tissue repair is facilitated by loading of the therapeutic cells with magnetic nanoparticles (MNPs) enabling magnetic tracking and targeting. Current methods for magnetizing cells use artificial MNPs and have disadvantages of variable uptake, cellular cytotoxicity and loss of nanoparticles on cell division. Here we demonstrate a transgenic approach to magnetize human mesenchymal stem cells (MSCs). MSCs are genetically modified by transfection with the mms6 gene derived from Magnetospirillum magneticum AMB-1, a magnetotactic bacterium that synthesises single-magnetic domain crystals which are incorporated into magnetosomes. Following transfection of MSCs with the mms6 gene there is bioassimilated synthesis of intracytoplasmic magnetic nanoparticles which can be imaged by MR and which have no deleterious effects on cell proliferation, migration or differentiation. The assimilation of magnetic nanoparticle synthesis into mammalian cells creates a real and compelling, cytocompatible, alternative to exogenous administration of MNPs.
Citation
Elfick , A , Rischitor , G , Mouras , R , Azfer , A , Lungaro , L , Uhlarz , M , Herrmannsdörfer , T , Lucocq , J M , Gamal , W , Bagnaninchi , P , Semple , S & Salter , D M 2017 , ' Biosynthesis of magnetic nanoparticles by human mesenchymal stem cells following transfection with the magnetotactic bacterial gene mms6 ' , Scientific Reports , vol. 7 , 39755 . https://doi.org/10.1038/srep39755
Publication
Scientific Reports
Status
Peer reviewed
DOI
https://doi.org/10.1038/srep39755
ISSN
2045-2322
Type
Journal article
Rights
Copyright the Author(s) 2017. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
Description
This work was funded under the FP7 EU project “MAGISTER”. Grant Number: NMP3-LA-2008-214685 and additionally supported through a MRC Confidence in Concept scheme award to the University of Edinburgh.
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/10072

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