Suppression of casein kinase 2 sensitizes tumor cells to antitumor TRAIL therapy by regulating the phosphorylation and localization of p65 in prostate cancer

  • Authors:
    • Xiaokun Gang
    • Yao Wang
    • Yingdi Wang
    • Yu Zhao
    • Liya Ding
    • Jingwen Zhao
    • Lin Sun
    • Guixia Wang
  • View Affiliations

  • Published online on: July 13, 2015     https://doi.org/10.3892/or.2015.4123
  • Pages: 1599-1604
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Abstract

In the United States, prostate cancer (PCa) is the most commonly diagnosed cancer in males. For PCa at the late hormone-refractory stage, substantial improvement in treatment strategies is critically needed. TNF-related apoptosis-inducing ligand (TRAIL) is a promising anticancer agent, but both intrinsic and acquired resistance to TRAIL poses a huge problem in establishing clinically effective TRAIL therapies. In the present study, we examined the role played by casein kinase 2 (CK2) in the TRAIL‑induced nuclear factor κ-light-chain-enhancer of activated B cell (NF-κB) pathway in a PCa cell line. Downregulation of CK2 combined with a sub-dose of TRAIL suppressed p65 phosphorylation at serine 536. The combination treatment of TRAIL and the CK2 inhibitor decreased p65 nuclear translocation. Under the treatment of a sub-dose of TRAIL, downregulation of CK2, using both genetic and pharmacological approaches, decreased the transcriptional activity of NF-κB and the expression of NF-κB downstream anti-apoptosis genes. Therefore, we provided novel molecular mechanistic insight reporting that CK2 regulates the sensitivity of PCa cells to the antitumor effect of TRAIL. This is important for understanding how the TRAIL pathway is disrupted in PCa and may help to develop an effective combinatorial therapy for PCa.
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September-2015
Volume 34 Issue 3

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Gang X, Wang Y, Wang Y, Zhao Y, Ding L, Zhao J, Sun L and Wang G: Suppression of casein kinase 2 sensitizes tumor cells to antitumor TRAIL therapy by regulating the phosphorylation and localization of p65 in prostate cancer. Oncol Rep 34: 1599-1604, 2015
APA
Gang, X., Wang, Y., Wang, Y., Zhao, Y., Ding, L., Zhao, J. ... Wang, G. (2015). Suppression of casein kinase 2 sensitizes tumor cells to antitumor TRAIL therapy by regulating the phosphorylation and localization of p65 in prostate cancer. Oncology Reports, 34, 1599-1604. https://doi.org/10.3892/or.2015.4123
MLA
Gang, X., Wang, Y., Wang, Y., Zhao, Y., Ding, L., Zhao, J., Sun, L., Wang, G."Suppression of casein kinase 2 sensitizes tumor cells to antitumor TRAIL therapy by regulating the phosphorylation and localization of p65 in prostate cancer". Oncology Reports 34.3 (2015): 1599-1604.
Chicago
Gang, X., Wang, Y., Wang, Y., Zhao, Y., Ding, L., Zhao, J., Sun, L., Wang, G."Suppression of casein kinase 2 sensitizes tumor cells to antitumor TRAIL therapy by regulating the phosphorylation and localization of p65 in prostate cancer". Oncology Reports 34, no. 3 (2015): 1599-1604. https://doi.org/10.3892/or.2015.4123