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Cytotoxicity of the Functionalized Gold and Silver Nanorods

Published online by Cambridge University Press:  01 February 2011

Chiung-Wen Kuo ,
Jun-Jung Lai Lai  and
Peilin Chen
Chiung-Wen Kuo
Affiliation:
[email protected], Academia Sinica, Research Center for Applied Sciences, 128, Sect 2, Academia Rd. Nankang, Taipei, 115, Taiwan, 886-2-27898000, 886-2-27896735
Jun-Jung Lai Lai
Affiliation:
[email protected], Academia Sinica, Research Center for Applied Sciences, 128, Sect 2, Academia Rd. Nankang, Taipei, 115, Taiwan
Peilin Chen
Affiliation:
[email protected], Academia Sinica, Research Center for Applied Sciences, 128, Sect 2, Academia Rd. Nankang, Taipei, 115, Taiwan
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Abstract

The cytotoxicity of various surface functionalized gold and silver nanords was measured by MTT assays for two cell lines, fibroblast and HeLa. It was found that the functionalized nanorods with 200 nm diameter and length up to a few micrometer can be readily internalized by both types of cells regardless of the surface functionalization. However, the cytotoxicity of the nanorods was found to depend on the polarity of the surface charge. The positively charged amino end group on the nanorod surface was found to be the least toxic whereas the negatively charged carboxylic acid end group on the nanorod surface caused lots of cell death. In general, the functionalized nanorods were found to be more toxic than the serum coated nanorods.

Keywords

AuAgbiomaterial
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 951: Symposium E – Nanofunctional Materials, Nanostructures and Novel Devices for Biological and Chemical Detection , 2006 , 0951-E12-25
Copyright
Copyright © Materials Research Society 2007

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