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Article

MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression

  • Authors:
    • Sung Lyea Park
    • Tae-Min Cho
    • Se Yeon Won
    • Jun-Hui Song
    • Dae‑Hwa Noh
    • Wun-Jae Kim
    • Sung-Kwon Moon
  • View Affiliations / Copyright

    Affiliations: Department of Food and Nutrition, Chung-Ang University, Anseong 456-756, Republic of Korea, Department of Biochemistry and Molecular Biology, College of Medicine, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea, Personalized Tumor Engineering Research Center, Department of Urology, Chungbuk National University, Cheongju, Chungbuk 361-763, Republic of Korea
  • Pages: 1605-1612
    |
    Published online on: July 9, 2015
       https://doi.org/10.3892/or.2015.4119
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Abstract

MicroRNAs (miRs) serve either as oncogenes or tumor-suppressor genes in tumor progression. MicroRNA-20b (miR‑20b) is known to be involved with the oncomirs of several types of cancers. However, in the present study we describe how miR-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells. In the present study, miR-20b was downregulated in bladder cancer cell lines, and its overexpression resulted in a significant reduction in the proliferation of EJ cells. In addition, via a bioinformatics approach, we identified cell cycle-regulated genes that are the putative targets of miR-20b. The transfection of miR-20b into EJ cells induced G1 phase cell cycle arrest via the decreased expression of cyclin D1, CDK2 and CDK6 without affecting another G1 phase cell cycle regulator, cyclin E. The cell cycle inhibitor p21WAF1 was upregulated in the miR-20b transfected cells. Moreover, the enforced expression of miR-20b resulted in impaired wound-healing migration and invasion in the EJ cells. Based on our target prediction analysis of miRs, we confirmed that miR-20b overexpression strongly impedes MMP-2 expression via suppressive activation of the Sp-1 binding motif, an important transcription factor present in the MMP-2 promoter. Herein, we report the novel concept that miR-20b exerts a suppressive effect on both cell cycle-modulated proliferation and MMP-2-mediated migration and invasion in bladder cancer EJ cells.
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Copy and paste a formatted citation
Spandidos Publications style
Park SL, Cho T, Won SY, Song J, Noh DH, Kim W and Moon S: MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression. Oncol Rep 34: 1605-1612, 2015.
APA
Park, S.L., Cho, T., Won, S.Y., Song, J., Noh, D., Kim, W., & Moon, S. (2015). MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression. Oncology Reports, 34, 1605-1612. https://doi.org/10.3892/or.2015.4119
MLA
Park, S. L., Cho, T., Won, S. Y., Song, J., Noh, D., Kim, W., Moon, S."MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression". Oncology Reports 34.3 (2015): 1605-1612.
Chicago
Park, S. L., Cho, T., Won, S. Y., Song, J., Noh, D., Kim, W., Moon, S."MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression". Oncology Reports 34, no. 3 (2015): 1605-1612. https://doi.org/10.3892/or.2015.4119
Copy and paste a formatted citation
x
Spandidos Publications style
Park SL, Cho T, Won SY, Song J, Noh DH, Kim W and Moon S: MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression. Oncol Rep 34: 1605-1612, 2015.
APA
Park, S.L., Cho, T., Won, S.Y., Song, J., Noh, D., Kim, W., & Moon, S. (2015). MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression. Oncology Reports, 34, 1605-1612. https://doi.org/10.3892/or.2015.4119
MLA
Park, S. L., Cho, T., Won, S. Y., Song, J., Noh, D., Kim, W., Moon, S."MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression". Oncology Reports 34.3 (2015): 1605-1612.
Chicago
Park, S. L., Cho, T., Won, S. Y., Song, J., Noh, D., Kim, W., Moon, S."MicroRNA-20b inhibits the proliferation, migration and invasion of bladder cancer EJ cells via the targeting of cell cycle regulation and Sp-1-mediated MMP-2 expression". Oncology Reports 34, no. 3 (2015): 1605-1612. https://doi.org/10.3892/or.2015.4119
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