Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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Transactions of Nonferrous Metals Society of China

Vol. 25    No. 2    February 2015

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Arginine functionalized hydroxyapatite nanoparticles and its bioactivity for gene delivery
Guo-hui WANG1, Yan-zhong ZHAO1, Juan TAN1, Shai-hong ZHU1, Ke-chao ZHOU2

1. The Third Xiangya Hospital, Central South University, Changsha 410013, China;
2. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China

Abstract:In order to further improve the transfection efficiency of hydroxyapatite nanoparticle (HAp), arginine functionalized hydroxyapatite (HAp/Arg) was synthesized by hydrothermal synthesis. The morphology, crystallite size and zeta potential of the HAp/Arg were characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM) and zeta potential analyzer. The loading and protecting properties of HAp/Arg to DNA were tested by electrophoresis. Its cytotoxicity was also measured in Hela cells and HAEC cells by MTT and LDH, and its transfection efficiency was examined by fluorescence microscope and flow cytometry. The results reveal that HAp/Arg is short rod-like and nano single crystal, the mean diameter is 50-90 nm and zeta potential is 35.8 mV at pH 7.4. HAp/Arg to DNA can be condensed by electrostatic effect and protect DNA against degradation in DNase I, and shows high transfection efficiency without cytotoxicity. These results suggest that HAp/Arg can be a promising alternative as a novel gene delivery system.


Key words: hydroxyapatite nanoparticles; arginine; functionalization; hydrothermal synthesis; gene delivery

ISSN 1004-0609
CN 43-1238/TG

ISSN 1003-6326
CN 43-1239/TG

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