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Article

Smart gold nanoparticles enhance killing effect on cancer cells

  • Authors:
    • Kun Song
    • Peng Xu
    • Yongde Meng
    • Feng Geng
    • Jie Li
    • Zhao  Li
    • James Xing
    • Jie Chen
    • Beihua Kong
  • View Affiliations / Copyright

    Affiliations: Department of Obstetrics and Gynecology/Gynecological Cancer Laboratory, Qilu Hospital of Shandong University, Ji'nan, Shandong, P.R. China, Department of Biomedical Engineering, University of Alberta, Edmonton, AB, Canada, Cross Cancer Institute, Edmonton, AB, Canada
  • Pages: 597-608
    |
    Published online on: November 29, 2012
       https://doi.org/10.3892/ijo.2012.1721
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Abstract

The present study explored the cellular uptake dynamics, the subcellular location and the internalization mechanisms of gold nanoparticles (GNPs) and glucose-capped GNPs (Glu-GNPs). The cancer radiotherapy-enhancing effects of GNPs were also evaluated. We synthesized the GNPs and Glu-GNPs by the seeding technique. The effects on cellular uptake and the radiosensitizing effect induced by GNPs and Glu-GNPs at lower doses were investigated using two human cancer cell lines (HeLa and MCF-7). The intracellular location of the nanoparticles was analyzed by transmission electron microscopy (TEM). Analysis of cellular apoptosis following GNP-based radiotherapy was performed by flow cytometry and TUNEL assay. Cancer cells took up more Glu-GNPs than naked GNPs and the uptake curve showed size- and cell-dependent uptake. GNPs were mainly located in the cytoplasm and endocytosis is the mechanism behind the internalization of GNPs and Glu-GNPs. Lower doses of GNPs and Glu-GNPs still enhanced the killing effect using X-ray irradiation, although the apoptotic rate was not altered. The results presented in this study provide evidence that Glu-GNPs may have a bright future in tumor-targeted diagnosis and treatment.
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Copy and paste a formatted citation
Spandidos Publications style
Song K, Xu P, Meng Y, Geng F, Li J, Li Z, Xing J, Chen J and Kong B: Smart gold nanoparticles enhance killing effect on cancer cells. Int J Oncol 42: 597-608, 2013.
APA
Song, K., Xu, P., Meng, Y., Geng, F., Li, J., Li, Z. ... Kong, B. (2013). Smart gold nanoparticles enhance killing effect on cancer cells. International Journal of Oncology, 42, 597-608. https://doi.org/10.3892/ijo.2012.1721
MLA
Song, K., Xu, P., Meng, Y., Geng, F., Li, J., Li, Z., Xing, J., Chen, J., Kong, B."Smart gold nanoparticles enhance killing effect on cancer cells". International Journal of Oncology 42.2 (2013): 597-608.
Chicago
Song, K., Xu, P., Meng, Y., Geng, F., Li, J., Li, Z., Xing, J., Chen, J., Kong, B."Smart gold nanoparticles enhance killing effect on cancer cells". International Journal of Oncology 42, no. 2 (2013): 597-608. https://doi.org/10.3892/ijo.2012.1721
Copy and paste a formatted citation
x
Spandidos Publications style
Song K, Xu P, Meng Y, Geng F, Li J, Li Z, Xing J, Chen J and Kong B: Smart gold nanoparticles enhance killing effect on cancer cells. Int J Oncol 42: 597-608, 2013.
APA
Song, K., Xu, P., Meng, Y., Geng, F., Li, J., Li, Z. ... Kong, B. (2013). Smart gold nanoparticles enhance killing effect on cancer cells. International Journal of Oncology, 42, 597-608. https://doi.org/10.3892/ijo.2012.1721
MLA
Song, K., Xu, P., Meng, Y., Geng, F., Li, J., Li, Z., Xing, J., Chen, J., Kong, B."Smart gold nanoparticles enhance killing effect on cancer cells". International Journal of Oncology 42.2 (2013): 597-608.
Chicago
Song, K., Xu, P., Meng, Y., Geng, F., Li, J., Li, Z., Xing, J., Chen, J., Kong, B."Smart gold nanoparticles enhance killing effect on cancer cells". International Journal of Oncology 42, no. 2 (2013): 597-608. https://doi.org/10.3892/ijo.2012.1721
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