期刊
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
卷 96, 期 -, 页码 552-560出版社
ELSEVIER
DOI: 10.1016/j.msec.2018.11.063
关键词
Boron nitride nanospheres; Mesoporous silica; Doxorubicin; Targeted delivery; Cancer therapy
资金
- Natural Science Foundation of Jiangsu Province [BK 20170202, BK20140141]
- National Natural Science Foundation of China [21406087, 31400693, 21576118]
- 111 Project [111-2-06]
Biomedical application of boron nitride (BN) nanomaterials has recently attracted considerable attentions. BN nanospheres (BNNS) could safely deliver anti-cancer drug into tumor cells, which makes them potential nano carrier for cancer therapy. However, the poor dispersity in physiological environments and low drug loading capacity severely limit their further applications. Herein, we developed a novel drug delivery system based on folate-conjugated mesoporous silica (MS)-functionalized BNNS (BNMS-FA). Dispersity and drug loading capacity of BNNS were highly improved by MS modification. BNMS-FA complexes were nontoxic up to a concentration of 100 mu g/mL, and could be specifically internalized by HeLa and MCF-7 cells via folate receptor-mediated endocytosis. Doxorubicin (DOX) could be loaded onto BNMS-FA complexes with high efficiency via pi-pi stacking and hydrogen bonding, and showed a sustained release pattern under different pH conditions. BNMS-FA/DOX complexes exhibited superior drug internalization and antitumor efficacy over free DOX, BNNS/DOX and BNMS/DOX complexes, which were considered promising for targeted cancer therapy.
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