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Wei, H.* ; Bruns, O.T. ; Chen, O.* ; Bawendi, M.G.*

Compact zwitterion-coated iron oxide nanoparticles for in vitro and in vivo imaging.

Integr. Biol. 5, 108-114 (2013)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
We have recently developed compact and water-soluble zwitterionic dopamine sulfonate (ZDS) ligand coated superparamagnetic iron oxide nanoparticles (SPIONs) for use in various biomedical applications. The defining characteristics of ZDS-coated SPIONs are small hydrodynamic diameters, low non-specific interactions with fetal bovine serum, the opportunity for specific labeling, and stability with respect to time, pH, and salinity. We report here on the magnetic characterization of ZDS-coated SPIONs and their in vitro and in vivo performance relative to non-specific interactions with HeLa cells and in mice, respectively. ZDS-coated SPIONs retained the superparamagnetism and saturation magnetization (M(s)) of as-synthesized hydrophobic SPIONs, with M(s) = 74 emu g(-1) [Fe]. Moreover, ZDS-coated SPIONs showed only small non-specific uptake into HeLa cancer cells in vitro and low non-specific binding to serum proteins in vivo in mice.
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Publication type Article: Journal article
Document type Scientific Article
Language english
Publication Year 2013
HGF-reported in Year 2013
ISSN (print) / ISBN 1757-9694
e-ISSN 1757-9708
Quellenangaben Volume: 5, Issue: 1, Pages: 108-114 Article Number: , Supplement: ,
Publisher Royal Society of Chemistry (RSC)
Publishing Place Cambridge
Reviewing status Peer reviewed
Institute(s) Helmholtz Pioneer Campus (HPC)
PubMed ID 23042209
Erfassungsdatum 2019-01-16