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:: Volume 18, Issue 3 (7-2020) ::
Int J Radiat Res 2020, 18(3): 539-547 Back to browse issues page
Development of radiolabeled dextran coated iron oxide nanoparticles with 111-In and its biodistribution studies
S.H. Mousavie Anijdan, A. Gholami, A. Lahooti
Department of Medical Physics and Biomedical Engineering, School of Medicine, Tehran University of Medical sciences, Tehran, Iran , lahootia@razi.tums.ac.ir
Abstract:   (1319 Views)
Background: The main aim of this study is to radiolabel dextran coated iron oxide nanoparticles (NPs) (with 80 nm hydrodynamic size) with the Indium-111 and evaluation their biodistribution after intravenous injection normal mice. Materials and Method: The chelator Diethylenetriamine Pentaacetic Acid (DTPA) dianhydride was conjugated to SPION using a small modification of the well-known cyclic anhydride method at a ratio of 1:5 (NPs:DTPA) molar ratio. The reaction was purified with magnetic assorting columns (MACs) using high gradient magnetic field following incubation. Then the radiochemical purity of the radiolabeled NPs were determined using RTLC method. The magnetic properties of nanoparticles were measured by a 1.5 tesla clinical human MRI. Results: The NPs showed high super paramagnetic properties whereas their r2/r1 was 17.6. The RTLC showed that the purity of compound was above 99% after purification and the compound has shown a good in-vitro stability until 6 hours in the presence of human serum. The biodistribution of 111In-DTPA-NPs in mice demonstrated high uptake in the reticuloendothelial system (RES) and the blood clearance was so fast. Conclusion: Due to magnificent uptakes of this radiotracer in the liver and spleen, its stability and their fast clearance from other tissues, especially in blood, it is suggested that this radiotracer would be suitable for RES theranostics purposes.
Keywords: Dextran-coated superparamagnetic iron oxide, 111In radioisotope, biodistribution, theranostics, reticuloendothelial system, radiopharmaceuticals.
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Type of Study: Original Research | Subject: Radiation Biology
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Mousavie Anijdan S, Gholami A, Lahooti A. Development of radiolabeled dextran coated iron oxide nanoparticles with 111-In and its biodistribution studies. Int J Radiat Res. 2020; 18 (3) :539-547
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Volume 18, Issue 3 (7-2020) Back to browse issues page
International Journal of Radiation Research
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