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- W3033583092 endingPage "111124" @default.
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- W3033583092 abstract "Abstract Mesoporous silica nanoparticles with a superparamagnetic iron oxide core were prepared in this work, in order to obtain multifunctional platforms with adequate features for cancer theranostics. Three different core-shell nanocomplexes were obtained: IO-OAm/mSiO2, IO-APTES/mSiO2 and IO/SiO2/mSiO2. In the case of IO-OAm/mSiO2 and IO-APTES/mSiO2, iron oxide (IO) was obtained by thermal decomposition, having in this case a coating of oleylamine (OAm) that was in the second formulation exchanged by (3-aminopropyl)triethoxysilane ligand (APTES). Regarding the IO/SiO2/mSiO2 formulation, iron oxide was synthesized by microemulsion. The mesoporous silica shell (mSiO2) on the IO nanoparticles was obtained by sol-gel and the final materials were dried by supercritical fluids drying. VSM confirmed the superparamagnetic behaviour of the nanoparticles, leading to MS of 4.0, 1.8 and 10.2 emu·g−1, for IO-OAm/mSiO2, IO-APTES/mSiO2 and IO/SiO2/mSiO2, respectively. NMR relaxometry has shown the potential of these nanoparticles to be used as T2 contrast agents, with r2 values as high as 63.93 s−1·mM−1 Fe. The three types of nanoparticles exhibited loading contents of epirubicin of ~3% and drug release percentages of 19% for IO-OAm/mSiO2, 24% for IO-APTES/mSiO2 and 31% for IO/SiO2/mSiO2. The cytotoxicity of drug-loaded and non-loaded most promising nanoparticles was assessed, showing high potential of these platforms for application as anticancer drug carriers." @default.
- W3033583092 created "2020-06-12" @default.
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- W3033583092 date "2020-10-01" @default.
- W3033583092 modified "2023-10-14" @default.
- W3033583092 title "Supercritically dried superparamagnetic mesoporous silica nanoparticles for cancer theranostics" @default.
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- W3033583092 doi "https://doi.org/10.1016/j.msec.2020.111124" @default.
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