期刊
INORGANICS
卷 10, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/inorganics10120250
关键词
pH-responsive; drug delivery; cancer therapy; Iridium complex; metallotherapeutics; mesoporous silica nanoparticles
资金
- German Academic Exchange Service (DAAD)
- Science Fund of the Republic of Serbia, PROMIS [57393212]
- European Union [6060755]
- [952259]
Using nanoparticles for controlled drug delivery to cancer, in response to its weakly acidic environment, represents a promising approach toward increasing the effectiveness and reducing the adverse effects of cancer therapy. This study constructed acidification-responsive drug delivery systems using mesoporous silica nanoparticles (MSN) to target cancer cells. The results showed enhanced release of drug complexes in weakly acidic environments, and demonstrated the potential for efficient treatment of glioblastoma multiforme.
Using nanoparticles for controlled drug delivery to cancer, in response to its weakly acidic environment, represents a promising approach toward increasing the effectiveness and reducing the adverse effects of cancer therapy. Hence, the aim of this study is to construct novel mesoporous silica nanoparticle (MSN)-based acidification-responsive drug delivery systems for targeted cancer therapy. Herein, the surface of MSN is covalently functionalized with Ir(III)-based complex through a pH-cleavable hydrazone-based linker and characterized by nitrogen sorption, SEM, FTIR, EDS, TGA, DSC, DLS, and zeta potential measurements. Enhanced release of Ir(III)-complexes is evidenced by UV/VIS spectroscopy at the weakly acidic environments (pH 5 and pH 6) in comparison to the release at physiological conditions. The in vitro toxicity of the prepared materials is tested on healthy MRC-5 cells while their potential for the efficient treatment of glioblastoma multiforme is demonstrated on the U251 cell line.
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