Monodisperse core-shell structured up-conversion Yb(OH)CO3@YbPO4:Er3+ hollow spheres as drug carriers

被引：122

作者：

Xu, Zhenhe ^{[1
]}

Ma, Ping'an ^{[1
]}

Li, Chunxia ^{[1
]}

Hou, Zhiyao ^{[1
]}

Zhai, Xuefeng ^{[1
]}

Huang, Shanshan ^{[1
]}

Lin, Jun ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

来源：

BIOMATERIALS | 2011年 / 32卷 / 17期

基金：

中国国家自然科学基金;

关键词：

Core-shell; Doxorubicin; Drug delivery; Hydrothermal synthesis; Up-conversion luminescence; MESOPOROUS SILICA NANOSPHERES; NANOPARTICLES; NANOCRYSTALS; PARTICLES; LUMINESCENCE; FABRICATION; KIRKENDALL; CRYSTALS; RED; NANOPHOSPHORS;

D O I：

10.1016/j.biomaterials.2011.02.026

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

In this work, we report a facile solution-phase synthesis of monodisperse core-shell structured Yb(OH)CO3@YbPO4 hollow spheres (size around 380 nm) by utilizing the colloidal sphere of Yb(OH)CO3 as the sacrificial template via the Kirkendall effect. The Er3+ doped Yb(OH)CO3@YbPO4 core-shell hollow spheres can be prepared similarly, which exhibit strong green emission under 980 nm NIR laser excitation even after loading with drug molecules. Most importantly, the sample can be used as an effective drug delivery carrier. The biocompatibility test on L929 fibroblast cells using MU assay reveals low cytotoxicity of the system. A typical anticancer drug, doxorubicin hydrochloride (DOX), is used for drug loading, and the release properties, cytotoxicity, uptake behavior and therapeutic effects were examined. It is found that DOX is shuttled into cell by core-shell hollow spheres carrier and released inside cells after endocytosis, and the DOX-loaded spheres exhibited greater cytotoxicity than free DOX. These results indicate that the core-shell Er3+ doped Yb(OH)CO3@YbPO4 hollow spheres have potential for drug loading and delivery into cancer cells to induce cell death. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：4161 / 4173

页数：13

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