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Spherically-Clustered Porous Au–Ag Alloy Nanoparticle Prepared by Partial Inhibition of Galvanic Replacement and Its Application for Efficient Multimodal Therapy
journal contribution
posted on 2015-03-24, 00:00 authored by Hongje Jang, Dal-Hee MinThe polyvinylpyrrolidone (PVP)-coated spherically clustered porous gold–silver alloy nanoparticle (PVP-SPAN) was prepared by low temperature mediated, partially inhibited galvanic replacement reaction followed by silver etching process. The prepared porous nanostructures exhibited excellent photothermal conversion efficiency under irradiation of near-infrared light (NIR) and allowed a high payload of both doxorubicin (Dox) and thiolated dye-labeled oligonucleotide, DNAzyme (FDz). Especially, PVP-SPAN provided 10 times higher loading capacity for oligonucleotide than conventional hollow nanoshells due to increased pore diameter and surface-to-volume ratio. We demonstrated highly efficient chemo-thermo-gene multitherapy based on codelivery of Dox and FDz with NIR-mediated photothermal therapeutic effect using a model system of hepatitis C virus infected human liver cells (Huh7 human hepatocarcinoma cell line containing hepatitis C virus NS3 gene replicon) compared to conventional hollow nanoshells.
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nanoparticlesphericallyratiohepatitis C virus NS 3 gene repliconDNAzymemultitherapyPorouphotothermal conversion efficiencyNIRirradiationApplicationthiolateddoxorubicinliver cellsFDzGalvanic Replacementoligonucleotidereplacement reactionEfficient Multimodal TherapyThe polyvinylpyrrolidonepore diameterloading capacitypayloadPVPhepatitis C virussilver etching processhepatocarcinoma cell line10 timesPartial InhibitionNanoparticlenanoshellcodeliveryHuh 7Doxmodel systemnanostructure
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