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Hybrid Fe3O4-Poly(acrylic acid) Nanogels for Theranostic Cancer Treatment

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Multifunctional nanomedicine integrated with both therapy and diagnostics holds vast potential in cancer treatment. We developed hybrid Fe3O4-poly(acrylic acid) (PAA) nanogels for both drug delivery and magnetic resonance imaging (MRI). Superparamagnetic Fe3O4 nanoparticles were encapsulated inside porous PAA nanogels via an in situ co-precipitation approach. With successive growth of magnetic nanoparticles, the highest magnetization saturation (M s) value of the Fe3O4 nanoparticles in the PAA nanogels was determined as 20 emu/g. The resulting hybrid Fe3O4-PAA nanogels showed high drug loading capacity (98%) and sustained drug release in vitro. Cytotoxicity assays and cellular imaging demonstrated that the hybrid nanogels were highly biocompatible and efficiently internalized in human neuroblastoma SH-SY5Y cells. In MRI studies, the hybrid nanogels exhibited an excellent contrast in T 2 weighted imaging and a high MRI sensitivity in the tumor site.
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Keywords: HIGH DRUG LOADING CAPACITY; HYBRID MAGNETIC NANOGELS; IN SITU CO-PRECIPITATION; MRI IMAGING; TUMOR TARGET

Document Type: Research Article

Publication date: May 1, 2015

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  • Journal of Biomedical Nanotechnology (JBN) is a peer-reviewed multidisciplinary journal providing broad coverage in all research areas focused on the applications of nanotechnology in medicine, drug delivery systems, infectious disease, biomedical sciences, biotechnology, and all other related fields of life sciences.
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