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International Journal of Oncology
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Print ISSN: 1019-6439 Online ISSN: 1791-2423
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May-2014 Volume 44 Issue 5

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Article Open Access

Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor

  • Authors:
    • Soon Young Jang
    • Eun Hyang Jang
    • Seo Young Jeong
    • Jong-Ho Kim
  • View Affiliations / Copyright

    Affiliations: Department of Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Dongdaemun-gu, Seoul 130-701, Republic of Korea, Department of Life and Nanopharmaceutical Science, Kyung Hee University, Dongdaemun-gu, Seoul 130-701, Republic of Korea
    Copyright: © Jang et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].
  • Pages: 1455-1460
    |
    Published online on: February 20, 2014
       https://doi.org/10.3892/ijo.2014.2306
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Abstract

Shikonin, a natural naphthoquinone isolated from the traditional Chinese medicine Zi Cao (gromwell), has been shown to possess tumor cell killing activity. The human androgen receptor (AR) is a nuclear transcription factor that serves as a major therapeutic target for prostate cancer. However, AR regulation by shikonin has not been reported. We investigated the effects of shikonin on the growth of prostate cancer cells. We observed that shikonin decreased the expression of AR at both the mRNA and the protein levels in LNCaP and 22RV1 human prostate cancer cells. The results from a luciferase assay showed that shikonin decreased the transcriptional activity of AR. Moreover, shikonin treatment inhibited AR target gene expression, PSA and growth inhibition of prostate cancer cells. In conclusion, the present study shows for the first time that shikonin treatment causes transcriptional repression of AR and inhibition of its nuclear localization in human prostate cancer cells. We propose that shikonin, an anticancer drug extracted from natural sources, induces inhibition of cell growth through modulation of AR in androgen-responsive prostate cancer cells and is a candidate for use in cancer chemotherapy for human prostate cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Jang SY, Jang EH, Jeong SY and Kim J: Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor. Int J Oncol 44: 1455-1460, 2014.
APA
Jang, S.Y., Jang, E.H., Jeong, S.Y., & Kim, J. (2014). Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor. International Journal of Oncology, 44, 1455-1460. https://doi.org/10.3892/ijo.2014.2306
MLA
Jang, S. Y., Jang, E. H., Jeong, S. Y., Kim, J."Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor". International Journal of Oncology 44.5 (2014): 1455-1460.
Chicago
Jang, S. Y., Jang, E. H., Jeong, S. Y., Kim, J."Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor". International Journal of Oncology 44, no. 5 (2014): 1455-1460. https://doi.org/10.3892/ijo.2014.2306
Copy and paste a formatted citation
x
Spandidos Publications style
Jang SY, Jang EH, Jeong SY and Kim J: Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor. Int J Oncol 44: 1455-1460, 2014.
APA
Jang, S.Y., Jang, E.H., Jeong, S.Y., & Kim, J. (2014). Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor. International Journal of Oncology, 44, 1455-1460. https://doi.org/10.3892/ijo.2014.2306
MLA
Jang, S. Y., Jang, E. H., Jeong, S. Y., Kim, J."Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor". International Journal of Oncology 44.5 (2014): 1455-1460.
Chicago
Jang, S. Y., Jang, E. H., Jeong, S. Y., Kim, J."Shikonin inhibits the growth of human prostate cancer cells via modulation of the androgen receptor". International Journal of Oncology 44, no. 5 (2014): 1455-1460. https://doi.org/10.3892/ijo.2014.2306
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