HER2/neu antibody conjugated poly(amino acid)-coated iron oxide nanoparticles for breast cancer MR imaging.

Abstract:

:Superparamagnetic iron oxide nanoparticles are widely used as nanoprobes for magnetic resonance imaging (MRI). Water-soluble iron oxide nanoparticles were synthesized by coating iron oxide nanoparticles with a hydrophilic, biocompatible, biodegradable poly(amino acid) derivative, poly(2-hydroxyethyl aspartamide) graft copolymer for negative contrast enhancement on T2 weighted MRI. HER2/neu antibodies were conjugated on the surface of poly(amino acid) coated iron oxide nanoparticles for the detection of breast cancer. The antibody-grafted iron oxide nanoparticles (PAION-Ab) were about 31.1 nm in diameter. The T2 relaxivity of PAION-Ab was 246 L·mmol(-1)·sec(-1) greater than that of the commercial product such as Feridex. PAION-Ab showed low cytotoxicity even at relatively high concentrations. Furthermore, Prussian blue staining and in vitro MRI study with SKBR-3, breast cancer cells overexpressing HER2/neu receptors indicated that PAION-Ab exhibited excellent cancer cell detection ability and enhanced signal intensities in the T2-weighted image.

journal_name

Biomacromolecules

journal_title

Biomacromolecules

authors

Yang HM,Park CW,Woo MA,Kim MI,Jo YM,Park HG,Kim JD

doi

10.1021/bm100560m

subject

Has Abstract

pub_date

2010-11-08 00:00:00

pages

2866-72

issue

11

eissn

1525-7797

issn

1526-4602

journal_volume

11

pub_type

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