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

作者：Aydogan Bulent^*; Li Ji; Rajh Tijana; Chaudhary Ahmed; Chmura Steven J; Pelizzari Charles; Wietholt Christian; Kurtoglu Metin; Redmond Peter

来源：Molecular Imaging and Biology, 2010, 12(5): 463-467.

DOI：10.1007/s11307-010-0299-8

• Gold nanoparticle
• Contrast-enhanced CT
• 2-Deoxy-D-glucose
• Cancer imaging
• Tumor targeting

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.
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.
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.
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.

• 出版日期2010-10