PEG-modified gold nanorods with a stealth character for in vivo applications
PEG-modified gold nanorods with a stealth character for in vivo applications
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DOI：
10.1016/j.jconrel.2006.06.017
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发表时间：
2006-09-12
影响因子：
10.8
通讯作者：
Niidome, Yasuro
中科院分区：
文献类型：
--
作者：
Niidome, Takuro;Yamagata, Masato;Niidome, Yasuro
Gold nanorods prepared in hexadecyltrimethylammonium bromide (CTAB) solution are expected to provide novel materials for photothermal therapy and photo-controlled drug delivery systems. Since gold nanorods stabilized with CTAB show strong cylotoxicity, we developed a technique to modify these with polyethyleneglycol (PEG) for medical applications. PEG-modification was achieved by adding mPEG-SH in the CTAB solution, then, excess CTAB was removed by dialysis. PEG-modified gold nanoparticles showed a nearly neutral surface, and had little cytotoxicity in vitro. Following intravenous injection into mice, 54% of injected PEG-modified gold nanoparticles were found in blood at 0.5 h after intravenous injection, whereas most of gold was detected in the liver in the case of original gold nanorods stabilized with CTAB. (c) 2006 Elsevier B.V. All rights reserved.
