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Coluccia, Daniel; Figueiredo, Carlyn A.; Wu, Megan YiJun; Riemenschneider, Alexandra N.; Diaz, Roberto; Luck, Amanda; Smith, Christian; Das, Sunit; Ackerley, Cameron; O’Reilly, Meaghan; Hynynen, Kullervo; Rutka, James T.
Nanomedicine, June 2018, 2018-06-00, 20180601, Letnik: 14, Številka: 4Journal Article
Glioblastoma (GBM) is the most common and aggressive primary brain tumor resulting in high rates of morbidity and mortality. A strategy to increase the efficacy of available drugs and enhance the delivery of chemotherapeutics through the blood brain barrier (BBB) is desperately needed. We investigated the potential of Cisplatin conjugated gold nanoparticle (GNP-UP-Cis) in combination with MR-guided Focused Ultrasound (MRgFUS) to intensify GBM treatment. Viability assays demonstrated that GNP-UP-Cis greatly inhibits the growth of GBM cells compared to free cisplatin and shows marked synergy with radiation therapy. Additionally, increased DNA damage through γH2AX phosphorylation was observed in GNP-UP-Cis treated cells, along with enhanced platinum concentrations. In vivo, GNP-UP-Cis greatly reduced the growth of GBM tumors and MRgFUS led to increased BBB permeability and GNP-drug delivery in brain tissue. Our studies suggest that GNP-Cis conjugates and MRgFUS can be used to focally enhance the delivery of targeted chemotherapeutics to brain tumors. Display omitted
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in: SICRIS
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