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- W4310530326 abstract "Abstract Graphene quantum dots (GQDs) are biocompatible nanoparticles employed in biomedical field, thanks to their size and photophysical properties. GQDs have shown the capability to cross biological barriers, including the blood-brain barrier, which makes them promising agents for brain diseases therapy. It has been shown that surface-functionalized GQDs enhance membrane fluidity and intracellular uptake, exerting a synergistic effect with antitumor drugs at subtherapeutic doses. Here we tested GQDs effects in combination with chemotherapeutic agents doxorubicin and temozolomide, on a complex 3D spheroid model of glioblastoma. We observed that the capability of GQDs to absorb and convert near-infrared light into heat is a key factor in membrane permeability enhancement on 3D model. This non-invasive therapeutic strategy named photothermal therapy (PTT), combined to chemotherapy at subtherapeutic doses, significantly increased the effect of antitumor drugs, by reducing tumor growth and viability. Furthermore, the increase in membrane permeability due to GQDs-mediated PTT enhanced the release of reactive oxygen species with strong migration of the immune system towards irradiated cancer spheroids. Our data indicate that the increase in membrane permeability can enhance the efficacy of antitumor drugs at subtherapeutic doses against glioblastoma, reducing side effects and directing immune response, ultimately improving quality of life for patients." @default.
- W4310530326 created "2022-12-11" @default.
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- W4310530326 date "2022-12-01" @default.
- W4310530326 modified "2023-10-03" @default.
- W4310530326 title "Carboxylated Graphene Quantum Dots-Mediated Photothermal Therapy Enhances Drug-Membrane Permeability, ROS Production, and the Immune System Recruitment on 3D Glioblastoma Models." @default.
- W4310530326 doi "https://doi.org/10.21203/rs.3.rs-2312481/v1" @default.
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