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Article

Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes

  • Authors:
    • Shanshan Zhang
    • Lei Han
    • Jianwei Wei
    • Zhendong Shi
    • Peiyu Pu
    • Jianning Zhang
    • Xubo Yuan
    • Chunsheng Kang
  • View Affiliations / Copyright

    Affiliations: Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science and Engineering, Tianjin University, Tianjin 300072, P.R. China, Laboratory of Neuro-Oncology, Department of Neurosurgery, Tianjin Neurological Institute, Tianjin Medical University General Hospital, Tianjin 300052, P.R. China
  • Pages: 1589-1600
    |
    Published online on: January 22, 2015
       https://doi.org/10.3892/ijo.2015.2841
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Abstract

Doxorubicin (DOX) is a key chemotherapeutic drug for cancer treatment. The antitumor mechanism of DOX is its action as a topoisomerase II poison by preventing DNA replication. Our study shows that DOX can be involved in epigenetic regulation of gene transcription through downregulation of DNA methyltransferase 1 (DNMT1) then reactivation of DNA methylation-silenced tumor suppressor genes in glioblastoma (GBM). Recent evidence demonstrated that microRNA (miR or miRNA) can mediate expression of genes through post-transcriptional regulation and modulate sensitivity to anticancer drugs. As one of the first miRNAs detected in the human genome, miR-21 has been validated to be overexpressed in GBM. Combination treatment of a chemotherapeutic and miRNA showed synergistically increased anticancer activities which has been proven to be an effective strategy for tumor therapy. In our study, co-treatment of DOX and miR-21 inhibitor (miR-21i) resulted in remarkably increased expression of tumor suppressor genes compared with DOX or the miR-21i treatment alone. Moreover, we demonstrate that combining DOX and miR-21i significantly reduced tumor cell proliferation, invasion and migration in vitro. Our study concludes that combining DOX and miR-21i is a new strategy for the therapy of GBM.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang S, Han L, Wei J, Shi Z, Pu P, Zhang J, Yuan X and Kang C: Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes. Int J Oncol 46: 1589-1600, 2015.
APA
Zhang, S., Han, L., Wei, J., Shi, Z., Pu, P., Zhang, J. ... Kang, C. (2015). Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes. International Journal of Oncology, 46, 1589-1600. https://doi.org/10.3892/ijo.2015.2841
MLA
Zhang, S., Han, L., Wei, J., Shi, Z., Pu, P., Zhang, J., Yuan, X., Kang, C."Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes". International Journal of Oncology 46.4 (2015): 1589-1600.
Chicago
Zhang, S., Han, L., Wei, J., Shi, Z., Pu, P., Zhang, J., Yuan, X., Kang, C."Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes". International Journal of Oncology 46, no. 4 (2015): 1589-1600. https://doi.org/10.3892/ijo.2015.2841
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang S, Han L, Wei J, Shi Z, Pu P, Zhang J, Yuan X and Kang C: Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes. Int J Oncol 46: 1589-1600, 2015.
APA
Zhang, S., Han, L., Wei, J., Shi, Z., Pu, P., Zhang, J. ... Kang, C. (2015). Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes. International Journal of Oncology, 46, 1589-1600. https://doi.org/10.3892/ijo.2015.2841
MLA
Zhang, S., Han, L., Wei, J., Shi, Z., Pu, P., Zhang, J., Yuan, X., Kang, C."Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes". International Journal of Oncology 46.4 (2015): 1589-1600.
Chicago
Zhang, S., Han, L., Wei, J., Shi, Z., Pu, P., Zhang, J., Yuan, X., Kang, C."Combination treatment with doxorubicin and microRNA-21 inhibitor synergistically augments anticancer activity through upregulation of tumor suppressing genes". International Journal of Oncology 46, no. 4 (2015): 1589-1600. https://doi.org/10.3892/ijo.2015.2841
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