期刊
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
卷 100, 期 -, 页码 855-861出版社
ELSEVIER
DOI: 10.1016/j.msec.2019.03.028
关键词
Mesoporous nanoparticles; Gelatin; MMP 2 cleavable; Nanogate; Anticancer drug delivery
资金
- National Key Research and Development Program of China [2017YFB0309300]
- National Natural Science Foundation of China [81772317]
- Shanghai International Cooperation Program [15520721200]
- Development Fund for Shanghai Talents [201519]
- Fundamental Research Funds for the Central Universities [WD1714002, WD1717015]
In this study, we demonstrate a simple approach to developing mesoporous nanohybrids via a process of preloading of an anticancer drug (doxorubicin, DOX) into mesoporous silica nanoparticles (MSN), followed by assembly with a kind of naturally-derived polymer (gelatin, cleavable by matrix metalloproteinase 2 overexpressed by tumor). The gelatin shell is then in situ crosslinked by degradable N,N'-bis(acryloyl)cystamine (BAC) to form enzymatic and redox switchable nanogates on the mesoporous nanoparticles. The nanohybrids displayed pH/redox/enzymatic sensitivity in DOX release under conditions mimicking tumor microenvironments. The nanocarriers can be effectively taken up by A549 cells (a carcinomic human alveolar basal epithelial cell line), resulting in a high DOX intracellular accumulation and an improved anticancer cytotoxicity when compared with free DOX, suggesting their potential as a nanoplatform for therapeutic delivery.
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