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Tunable surface plasmon resonance–based remote actuation of bimetallic core-shell nanoparticle-coated Stimuli responsive polymer for switchable chemo-photothermal synergistic cancer therapy

Amoli Diva, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1016/j.xphs.2018.05.025
  3. Abstract:
  4. New dual light/temperature-responsive nanocarriers were synthesized using bimetallic plasmonic Au-Ag and Ag-Au nanoparticles (NPs) as cores of vehicles which subsequently functionalized with an upper critical solubility temperature–based poly acrylamide-co-acrylonitrile using reversible addition-fragmentation chain transfer for spatiotemporally controlled chemo-photothermal synergistic cancer therapy. The bimetallic cores were assigned to sense wavelengths close to the localized surface plasmon resonance of monometallic NP shell to produce heat which not only can increase the surrounding temperature over the upper critical solubility temperature of polymer to open its valves and promote drug diffusion but also can kill cancerous cells through photothermal effects with increase in environment temperature by nearly 18°C after about 5 min radiation. The bimetallic NPs were shown good reusability even after 5 heating/cooling cycles, and the efficiency of both photothermal/chemotherapic procedures can be modulated by manipulating carrier's concentration and radiation time. In addition, the cytotoxicity of drug-free nanocarriers on normal L929 fibroblast and letrozole-loaded nanocarriers on MDAMB 231 breast-cancer cell lines were investigated in the absence/presence of laser radiation. Finally, the prepared nanocomposites were exhibited switchable on/off drug release in 2 buffered solutions (pH 5.5 and 7.4) with light actuation. The results revealed that the prepared nanocarriers can be served as efficient delivery platforms for remote-control chemophotothermal synergistic cancer therapy. © 2018 American Pharmacists Association®
  5. Keywords:
  6. Bimetallic Ag-Au and Au-Ag nanoparticles ; Chemophotothermal cancer therapy ; Laser-enhanced release ; Remote actuation ; Copolymer ; Gold nanoparticle ; Letrozole ; Nanocarrier ; Nanocomposite ; Polyacrylamide ; Polyacrylonitrile ; Silver nanoparticle ; Cancer cell ; Cancer chemotherapy ; Cancer therapy ; Concentration (parameters) ; Controlled study ; Drug cytotoxicity ; Drug delivery system ; Drug diffusion ; Drug dosage form comparison ; Environmental temperature ; Heat ; Human ; Human cell ; MDA-MB-231 cell line ; NCTC clone 929 cell line ; PH ; Photothermal therapy ; Radiation ; Recycling ; Solubility ; Spectral sensitivity ; Surface plasmon resonance ; Switchable chemo-photothermal synergistic cancer therapy ; Synthesis ; Temperature
  7. Source: Journal of Pharmaceutical Sciences ; Volume 107, Issue 10 , 2018 , Pages 2618-2627 ; 00223549 (ISSN)
  8. URL: https://www.sciencedirect.com/science/article/pii/S002235491830337X