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dc.contributor.author유동길-
dc.contributor.authorGurusamy Saravanakumar-
dc.contributor.author손소영-
dc.contributor.author한화승-
dc.contributor.author허로운-
dc.contributor.author김광명-
dc.contributor.author권익찬-
dc.contributor.author이준영-
dc.contributor.author박재형-
dc.date.accessioned2015-12-03T01:10:23Z-
dc.date.available2015-12-03T01:10:23Z-
dc.date.issued201401-
dc.identifier.citationVOL 101, 1225-1233-
dc.identifier.issn01448617-
dc.identifier.other41647-
dc.identifier.urihttp://pubs.kist.re.kr/handle/201004/47256-
dc.description.abstractThe hallmark of atherosclerosis in its early pathogenic process is the overexpression of class A scavenger receptors (SR-A) by activated macrophages. In this study, dextran sulfate-coated superparamagnetic iron oxide nanoparticles (DS-SPIONs), as a magnetic resonance (MR) imaging contrast agent of atherosclerosis, was prepared via the facile co-precipitation method using a versatile double-hydrophilic block copolymer comprising of a DS segment (ligand for SR-A) and a poly(glyclerol methacrylate) segment (SPIONs surface-anchoring unit). The physicochemical properties of the DS-SPIONs were investigated using various instruments. DS-SPIONs exhibited high aqueous stability compared to dextran-coated SPIONs (Dex-SPIONs), which were used as controls. The cellular uptake behaviors of DS-SPIONs and Dex-SPIONs were evaluated using Prussian blue assay. Interestingly, the DS-SPIONs were effectively taken up by activated macrophages compared to Dex-SPIONs. However, the cellular uptake of DS-SPIONs by activated macrophages was remarkably reduced in the presence of free DS. These results suggest that activated macrophages internalize DS-SPIONs via receptor (SR-A)-mediated endocytosis. T2-weighted MR imaging of the cells demonstrated that activated macrophages treated with DS-SPIONs showed a significantly lower signal intensity compared to those treated with Dex-SPIONs. Overall, these results suggest that DS-SPIONs may be utilized as a potential contrast agent for atherosclerosis MR imaging.-
dc.publisherCarbohydrate polymers-
dc.subjectDextran sulfate-
dc.subjectAtherosclerosis-
dc.subjectDouble hydrophilic copolymer-
dc.subjectContrast agent-
dc.subjectMagnetic resonance imaging-
dc.titleDextran sulfate-coated superparamagnetic iron oxide nanoparticles as a contrast agent for atherosclerosis imaging-
dc.typeArticle-
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