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Article

Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response

  • Authors:
    • Wei Lu
    • Tanmin Lu
    • Xin Wei
  • View Affiliations / Copyright

    Affiliations: Department of Obstetrics and Gynecology, Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
  • Pages: 3597-3604
    |
    Published online on: September 28, 2016
       https://doi.org/10.3892/or.2016.5134
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Abstract

In the present study, DNA (cytosine-5)-methyltransferase 3α (DNMT3a) is explored as an anticancer molecule in ovarian cancer treatment, and also the mechanistic link between DNMT3a and its regulatory signaling pathway in Caov-3 cells is provided. Firstly, DNMT3a protein expression in 12 freshly resected ovarian cancer patient tissues and tisssues from 8 ovariectomized patients was assessed. In the ovarian cancer tissues, DNMT3a expression was upregulated and miR-182 expression was downregulated. DNMT3a overexpression inhibited miR-182 expression and caspase-3 and -9 activity and suppressed p53 and c-Myc protein expression in Caov-3 cells. Secondly, miR-182 overexpression increased Caov-3 cell apoptosis, which however was reduced by DNMT3a (DNMT3 plasmid) overexpression. Downregulation of DNMT3a expression activated miR-182 expression and caspase-3 and -9 activity, and promoted p53 and c-Myc protein expression in Caov-3 cells. Collectively, a valuable anticancer mechanism of ovarian cancer was elucidated, by which downregulation of DNMT3a regulated miR-182 via caspase-3 and -9-mediated apoptosis and DNA damage response, which suggests that DNMT3a may be used as a potential strategy for therapeutic intervention in ovarian cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Lu W, Lu T and Wei X: Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response. Oncol Rep 36: 3597-3604, 2016.
APA
Lu, W., Lu, T., & Wei, X. (2016). Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response. Oncology Reports, 36, 3597-3604. https://doi.org/10.3892/or.2016.5134
MLA
Lu, W., Lu, T., Wei, X."Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response". Oncology Reports 36.6 (2016): 3597-3604.
Chicago
Lu, W., Lu, T., Wei, X."Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response". Oncology Reports 36, no. 6 (2016): 3597-3604. https://doi.org/10.3892/or.2016.5134
Copy and paste a formatted citation
x
Spandidos Publications style
Lu W, Lu T and Wei X: Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response. Oncol Rep 36: 3597-3604, 2016.
APA
Lu, W., Lu, T., & Wei, X. (2016). Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response. Oncology Reports, 36, 3597-3604. https://doi.org/10.3892/or.2016.5134
MLA
Lu, W., Lu, T., Wei, X."Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response". Oncology Reports 36.6 (2016): 3597-3604.
Chicago
Lu, W., Lu, T., Wei, X."Downregulation of DNMT3a expression increases miR-182-induced apoptosis of ovarian cancer through caspase-3 and caspase-9-mediated apoptosis and DNA damage response". Oncology Reports 36, no. 6 (2016): 3597-3604. https://doi.org/10.3892/or.2016.5134
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