AuNP-DG: Deoxyglucose-labeled Gold Nanoparticles As X-ray Computed Tomography Contrast Agents for Cancer Imaging

Overview

Journal Mol Imaging Biol

Publisher Springer

Specialties Molecular Biology
Radiology

Date 2010 Mar 19

PMID 20237857

Citations 21

Authors

Bulent Aydogan

Ji Li

Tijana Rajh

Ahmed Chaudhary

Steven J Chmura

Charles Pelizzari

Christian Wietholt

Metin Kurtoglu

Peter Redmond

Affiliations

Soon will be listed here.

Abstract

Purpose: To study the feasibility of using 2-deoxy-D-glucose (2-DG)-labeled gold nanoparticle (AuNP-DG) as a computed tomography (CT) contrast agent with tumor targeting capability through in vitro experiments.

Procedures: Gold nanoparticles (AuNP) were fabricated and were conjugated with 2-deoxy-D-glucose. The human alveolar epithelial cancer cell line, A-549, was chosen for the in vitro cellular uptake assay. Two groups of cell samples were incubated with the AuNP-DG and the unlabeled AuNP, respectively. Following the incubation, the cells were washed with sterile PBS to remove the excess gold nanoparticles and spun to cell pellets using a centrifuge. The cell pellets were imaged using a microCT scanner immediately after the centrifugation. The reconstructed CT images were analyzed using a commercial software package.

Results: Significant contrast enhancement in the cell samples incubated with the AuNP-DG with respect to the cell samples incubated with the unlabeled AuNP was observed in multiple CT slices.

Conclusions: Results from this study demonstrate enhanced uptake of 2-DG-labeled gold nanoparticle by cancer cells in vitro and warrant further experiments to study the exact molecular mechanism by which the AuNP-DG is internalized and retained in the tumor cells.

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