BioMed Research International

BioMed Research International / 2007 / Article
Special Issue

Biomedical Applications of Colloidal Nanocrystals

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Research Article | Open Access

Volume 2007 |Article ID 094740 | https://doi.org/10.1155/2007/94740

Mi Kyong Yoo, In Yong Kim, Eun Mi Kim, Hwan-Jeong Jeong, Chang-Moon Lee, Yong Yeon Jeong, Toshihiro Akaike, Chong Su Cho, "Superparamagnetic Iron Oxide Nanoparticles Coated with Galactose-Carrying Polymer for Hepatocyte Targeting", BioMed Research International, vol. 2007, Article ID 094740, 9 pages, 2007. https://doi.org/10.1155/2007/94740

Superparamagnetic Iron Oxide Nanoparticles Coated with Galactose-Carrying Polymer for Hepatocyte Targeting

Academic Editor: Marek Osinski
Received02 Apr 2007
Accepted24 Dec 2007
Published19 Feb 2008

Abstract

Our goal is to develop the functionalized superparamagnetic iron oxide nanoparticles (SPIONs) demonstrating the capacities to be delivered in liver specifically and to be dispersed in physiological environment stably. For this purpose, SPIONs were coated with polyvinylbenzyl-O-β-D-galactopyranosyl-D-gluconamide (PVLA) having galactose moieties to be recognized by asialoglycoprotein receptors (ASGP-R) on hepatocytes. For use as a control, we also prepared SPIONs coordinated with 2-pyrrolidone. The sizes, size distribution, structure, and coating of the nanoparticles were characterized by transmission electron microscopy (TEM), electrophoretic light scattering spectrophotometer (ELS), X-ray diffractometer (XRD), and Fourier transform infrared (FT-IR), respectively. Intracellular uptake of the PVLA-coated SPIONs was visualized by confocal laser scanning microscopy, and their hepatocyte-specific delivery was also investigated through magnetic resonance (MR) images of rat liver. MRI experimental results indicated that the PVLA-coated SPIONs possess the more specific accumulation property in liver compared with control, which suggests their potential utility as liver-targeting MRI contrast agent.

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Copyright © 2007 Mi Kyong Yoo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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