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Article

Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA

  • Authors:
    • Tomoaki Terakawa
    • Hideaki Miyake
    • Masafumi Kumano
    • Masato Fujisawa
  • View Affiliations / Copyright

    Affiliations: Division of Urology, Kobe University Graduate School of Medicine, Kobe 650-0017, Japan
  • Pages: 713-717
    |
    Published online on: April 28, 2011
       https://doi.org/10.3892/ol.2011.295
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Abstract

The objective of this study was to investigate the inhibitory effects of Aurora-A expression on the growth and chemosensitivity of Caki-2 cells in human renal cell carcinoma (RCC). Caki-2 cells were established, in which an expression vector containing short hairpin RNA (shRNA) targeting Aurora-A was introduced (Caki-2/sh-A). The growth and sensitivity of chemotherapeutic agents in Caki-2/sh-A cells were compared to those in Caki-2 cells transfected with control vector alone (Caki-2/C). The expression levels of both Aurora-A mRNA and protein in Caki-2/sh-A cells were less than 10% of those in Caki-2/C cells. The in vitro growth of Caki-2/sh-A cells was significantly inferior to that of Caki-2/C cells, and the proportion of Caki-2/sh-A cells in the G2-M phase was significantly greater compared to that of Caki-2/C cells. In addition, the expression level of Bax in Caki-2/sh-A cells was significantly higher as compared to that in Caki-2/C cells, while phosphorylated Akt in Caki-2/sh-A cells was markedly down-regulated compared to that in Caki-2/C cells. Among several chemotherapeutic agents examined, the most significant difference between Caki-2/sh-A and Caki-2/C cells was observed in the sensitivity to docetaxel. Thus, the IC50 value of docetaxel in Caki-2/sh-A cells was decreased by approximately 90% compared to that in Caki-2/C cells. Treatment of Caki-2/sh-A cells, but not Caki-2/C ones, with 5 nM docetaxel resulted in the induction of apoptotic cell death accompanying the induction of p53. The findings suggest that the suppression of Aurora-A expression using shRNA is a useful therapeutic strategy against RCC through growth inhibition as well as enhanced chemosensitivity.
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Copy and paste a formatted citation
Spandidos Publications style
Terakawa T, Miyake H, Kumano M and Fujisawa M: Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA. Oncol Lett 2: 713-717, 2011.
APA
Terakawa, T., Miyake, H., Kumano, M., & Fujisawa, M. (2011). Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA. Oncology Letters, 2, 713-717. https://doi.org/10.3892/ol.2011.295
MLA
Terakawa, T., Miyake, H., Kumano, M., Fujisawa, M."Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA". Oncology Letters 2.4 (2011): 713-717.
Chicago
Terakawa, T., Miyake, H., Kumano, M., Fujisawa, M."Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA". Oncology Letters 2, no. 4 (2011): 713-717. https://doi.org/10.3892/ol.2011.295
Copy and paste a formatted citation
x
Spandidos Publications style
Terakawa T, Miyake H, Kumano M and Fujisawa M: Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA. Oncol Lett 2: 713-717, 2011.
APA
Terakawa, T., Miyake, H., Kumano, M., & Fujisawa, M. (2011). Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA. Oncology Letters, 2, 713-717. https://doi.org/10.3892/ol.2011.295
MLA
Terakawa, T., Miyake, H., Kumano, M., Fujisawa, M."Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA". Oncology Letters 2.4 (2011): 713-717.
Chicago
Terakawa, T., Miyake, H., Kumano, M., Fujisawa, M."Growth inhibition and enhanced chemosensitivity induced by down-regulation of Aurora-A in human renal cell carcinoma Caki-2 cells using short hairpin RNA". Oncology Letters 2, no. 4 (2011): 713-717. https://doi.org/10.3892/ol.2011.295
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