Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.biomaterials.2008.01.028
Title: HER-2-mediated endocytosis of magnetic nanospheres and the implications in cell targeting and particle magnetization
Authors: Wuang, S.C. 
Neoh, K.G. 
Kang, E.-T. 
Pack, D.W.
Leckband, D.E.
Keywords: Cell targeting
HER-2-mediated endocytosis
Herceptin
Magnetization
Polypyrrole-Fe3O4 nanospheres
Issue Date: May-2008
Citation: Wuang, S.C., Neoh, K.G., Kang, E.-T., Pack, D.W., Leckband, D.E. (2008-05). HER-2-mediated endocytosis of magnetic nanospheres and the implications in cell targeting and particle magnetization. Biomaterials 29 (14) : 2270-2279. ScholarBank@NUS Repository. https://doi.org/10.1016/j.biomaterials.2008.01.028
Abstract: Polypyrrole-Fe3O4 nanospheres were synthesized via an emulsion polymerization method with hyaluronic acid as the surfactant. Hyaluronic acid offers the advantages of biocompatibility, cell adhesive property and the availability of functional groups for attachment of other molecules. The nanospheres were further functionalized with herceptin, and the efficacy of uptake of the functionalized nanospheres by human breast cancer cells was evaluated. It is envisioned that the combination of hyaluronic acid with its cell adhesive property and herceptin would result in high efficacy of internalization of the nanospheres by the cancer cells via a HER-2-mediated endocytosis. Our results showed that this is indeed the case and that the high concentration of herceptin-functionalized magnetic nanospheres in the cancer cells offers great potential in cancer cell targeting and treatment. In addition, the magnetic property of these nanospheres was also critically investigated and the magnetization was found to be affected by the particles' environment. The combination of these cell-targeting magnetic carriers with chemotherapeutic agents will be highly advantageous for the preferential killing of cancer cells in hyperthermia treatment. © 2008 Elsevier Ltd. All rights reserved.
Source Title: Biomaterials
URI: http://scholarbank.nus.edu.sg/handle/10635/89062
ISSN: 01429612
DOI: 10.1016/j.biomaterials.2008.01.028
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