Ubiquitin-proteasomal degradation of antiapoptotic survivin facilitates induction of apoptosis in prostate cancer cells by pristimerin

  • Authors:
    • Yong Bo Liu
    • Xiaohua Gao
    • Dorrah Deeb
    • Chris Brigolin
    • Yiguan Zhang
    • Jiajiu Shaw
    • Kirit Pindolia
    • Subhash C. Gautam
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  • Published online on: July 25, 2014     https://doi.org/10.3892/ijo.2014.2561
  • Pages: 1735-1741
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Abstract

Pristimerin (PM), a quinonemethide triterpenoid, is a promising anticancer agent with potent antiproliferative and apoptosis-inducing activities against cancer cell lines. However, the anticancer activity and mechanisms of PM in prostate cancer cells have not been adequately investigated. Here we report that the degradation of survivin plays an important role in the antiproliferative and proapoptotic effects of PM in carcinoma of the prostate (CaP) cell lines. Treatment with PM inhibited proliferation and induced apoptosis in LNCaP and PC-3 cells as characterized by the loss of cell viability and an increase in Annexin V-binding and cleavage of PARP-1, respectively. The antiproliferative and apoptosis-inducing effects of PM were associated with the inhibition of cell cycle regulatory proteins, antiapoptotic survivin and members of the Bcl-2 family. Data showed that response to PM is regulated by survivin since overexpression of survivin rendered CaP cells resistant to PM. Furthermore, downregulation of survivin by PM was mediated through the ubiquitin-proteasomal degradation. Together, these data demonstrate that pristimerin inhibits proliferation and induces apoptosis in CaP cells by abolishing survivin through the ubiquitin-proteasome pathway.
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October 2014
Volume 45 Issue 4

Print ISSN: 1019-6439
Online ISSN:1791-2423

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APA
Liu, Y.B., Gao, X., Deeb, D., Brigolin, C., Zhang, Y., Shaw, J. ... Gautam, S.C. (2014). Ubiquitin-proteasomal degradation of antiapoptotic survivin facilitates induction of apoptosis in prostate cancer cells by pristimerin. International Journal of Oncology, 45, 1735-1741. https://doi.org/10.3892/ijo.2014.2561
MLA
Liu, Y. B., Gao, X., Deeb, D., Brigolin, C., Zhang, Y., Shaw, J., Pindolia, K., Gautam, S. C."Ubiquitin-proteasomal degradation of antiapoptotic survivin facilitates induction of apoptosis in prostate cancer cells by pristimerin". International Journal of Oncology 45.4 (2014): 1735-1741.
Chicago
Liu, Y. B., Gao, X., Deeb, D., Brigolin, C., Zhang, Y., Shaw, J., Pindolia, K., Gautam, S. C."Ubiquitin-proteasomal degradation of antiapoptotic survivin facilitates induction of apoptosis in prostate cancer cells by pristimerin". International Journal of Oncology 45, no. 4 (2014): 1735-1741. https://doi.org/10.3892/ijo.2014.2561