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- W2025575006 abstract "Photodynamic therapy (PDT) for brain tumors appears to be complementary to conventional treatments. A number of studies show the major role of the vascular effect in the tumor eradication by PDT. For interstitial PDT (iPDT) of brain tumors guided by real-time imaging, multifunctional nanoparticles consisting of a surface-localized tumor vasculature targeting neuropilin-1 (NRP-1) peptide and encapsulated photosensitizer and magnetic resonance imaging (MRI) contrast agents, have been designed. Nanoplatforms confer photosensitivity to cells and demonstrate a molecular affinity to NRP-1. Intravenous injection into rats bearing intracranial glioma exhibited a dynamic contrast-enhanced MRI for angiogenic endothelial cells lining the neovessels mainly located in the peripheral tumor. By using MRI completed by NRP-1 protein expression of the tumor and brain adjacent to tumor tissues, we checked the selectivity of the nanoparticles. This study represents the first in vivo proof of concept of closed-head iPDT guided by real-time MRI using targeted ultrasmall nanoplatforms. From the clinical editor: The authors constructed tumor vascular peptide targeting multifunctional silica-based nanoparticles, with encapsulated gadolinium oxide as MRI contrast agent and chlorin as a photosensitizer, as a proof of concept novel treatment for glioblastoma in an animal model." @default.
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- W2025575006 date "2015-04-01" @default.
- W2025575006 modified "2023-10-16" @default.
- W2025575006 title "Multifunctional ultrasmall nanoplatforms for vascular-targeted interstitial photodynamic therapy of brain tumors guided by real-time MRI" @default.
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- W2025575006 doi "https://doi.org/10.1016/j.nano.2014.12.007" @default.
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