Dendrimer-based nanoprobe for dual modality magnetic resonance and fluorescence imaging.

Talanov, Vladimir S; Regino, Celeste A S; Kobayashi, Hisataka; Bernardo, Marcelino; Choyke, Peter L; Brechbiel, Martin W · Nano Lett · 2006

basic_science · Level V

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Abstract

A novel PAMAM dendrimer-based nanoprobe for dual magnetic resonance and fluorescence imaging modalities was synthesized. Fluorescence studies revealed that Gd(III) complexation to the probe has no effect on the quantum yield; however, increases in the dye content resulted in partial quenching. The potential of the new nanoprobe, G6-(Cy5.5)(1.25)(1B4M-Gd)(145), as a dual modality imaging agent was demonstrated in vivo by the efficient visualization of sentinel lymph nodes in mice by both MRI and fluorescence imaging modalities.

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