Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 18, Issue 15, Pages 1779-1783Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b717613a
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We report a novel approach for synthesizing LuPO4-apoferritin core-shell nanoparticles based on an apoferritin template. To prepare the nanoparticle, we used non-radioactive lutetium as a model target or surrogate for radiolutetium (Lu-177). The central cavity, multi-channel structure, and chemical properties of apoferritin are well-suited for sequentially diffusing lutetium and phosphate ions into the cavity, resulting in a stable core-shell composite. We characterized the synthesized LuPO4-apoferritin nanoparticle using transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). We found that LuPO4 formed inside the cavity of apoferritin with an 8 nm diameter. We tested the pre-targeting capability of biotin-modified lutetium-apoferritin nanoparticle using streptavidin-modified magnetic beads and streptavidin-modified fluorescein isothiocyanate (FITC) tracer. This paper presents a simple, fast, and efficient method for synthesizing LuPO4-apoferritin nanoparticle for potential applications in radioimmunotherapy and radioimmunoimaging of cancer.
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