A T1, T2 magnetic resonance imaging (MRI)-fluorescent imaging (FI) by using ultrasmall mixed gadolinium-europium oxide nanoparticles

Wenlong Xu, Ja Young Park, Krishna Kattel, Badrul Alam Bony, Woo Choul Heo, Seonguk Jin, Jang Woo Park, Yongmin Chang, Ji Yeon Do, Kwon Seok Chae, Tae Jeong Kim, Ji Ae Park, Young Woo Kwak, Gang Ho Lee

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Multiple molecular imaging is a challenging subject. Water-soluble and biocompatible lactobionic acid coated ultrasmall mixed gadolinium-europium oxide nanoparticles with an average particle diameter of 1.75 nm and an average hydrodynamic diameter of 4.16 nm were synthesized and applied for T1, T2 MRI-FI in vitro and in vivo. They had r1 and r 2 values of 11.9 and 38.7 s-1 mM-1, respectively, and showed clear dose-dependent contrast changes in both R 1 and R2 map images. In addition, they showed both positive and negative contrast enhancements in 3 tesla T1 and T 2 MR images in a mouse, respectively, and fluorescent confocal images in both DU145 cells and C. elegans (a small nematode). This study demonstrates the T1, T2 MRI-FI multi-functionality of lactobionic acid coated mixed gadolinium-europium oxide nanoparticles.

Original languageEnglish
Pages (from-to)2361-2367
Number of pages7
JournalNew Journal of Chemistry
Volume36
Issue number11
DOIs
StatePublished - Nov 2012

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