Gallium-68 Labeled Iron Oxide Nanoparticles Coated with 2, 3-Dicarboxypropane-1, 1-diphosphonic Acid as a Potential PET/MR Imaging Agent: A Proof-of-Concept Study. (28th December 2017)

• Record Type: Journal Article
• Authors: Karageorgou, Maria-Argyro; Vranješ-Djurić, Sanja; Radović, Magdalena; Lyberopoulou, Anna; Antić, Bratislav; Rouchota, Maritina; Gazouli, Maria; Loudos, George; Xanthopoulos, Stavros; Sideratou, Zili; Stamopoulos, Dimosthenis; Bouziotis, Penelope; Tsoukalas, Charalampos
• Other Names: Herranz Fernando Academic Editor.
• Is Part Of: Contrast media & molecular imaging. Volume 2017(2017)
• Publication Date: 2017-12-28
• Subjects: Diagnostic imaging -- Periodicals; Magnetic resonance imaging -- Periodicals; Contrast media (Diagnostic imaging) -- Periodicals; Contrast Media -- Periodicals; Diagnostic Imaging -- Periodicals; Substances de contraste -- Périodiques; Diagnostics moléculaires -- Périodiques; Imagerie médicale; Substance de contraste; Périodique électronique (Descripteur de forme); Ressource Internet (Descripteur de forme); 616.0754
• DOI: 10.1155/2017/6951240
• Languages: English
• ISSNs: 1555-4309

Abstract

Abstract : The aim of this study was to develop a dual-modality PET/MR imaging probe by radiolabeling iron oxide magnetic nanoparticles (IONPs), surface functionalized with water soluble stabilizer 2, 3-dicarboxypropane-1, 1-diphosphonic acid (DPD), with the positron emitter Gallium-68. Magnetite nanoparticles (Fe3 O4 MNPs) were synthesized via coprecipitation method and were stabilized with DPD. The Fe3 O4 -DPD MNPs were characterized based on their structure, morphology, size, surface charge, and magnetic properties. In vitro cytotoxicity studies showed reduced toxicity in normal cells, compared to cancer cells. Fe3 O4 -DPD MNPs were successfully labeled with Gallium-68 at high radiochemical purity (>91%) and their stability in human serum and in PBS was demonstrated, along with their further characterization on size and magnetic properties. The ex vivo biodistribution studies in normal Swiss mice showed high uptake in the liver followed by spleen. The acquired PET images were in accordance with the ex vivo biodistribution results. Our findings indicate that G a 6 8 -Fe3 O4 -DPD MNPs could serve as an important diagnostic tool for biomedical imaging.