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MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma

  • Authors:
    • Ye Dong
    • Jianjun Zou
    • San Su
    • Huiyi Huang
    • Yanzhen Deng
    • Birong Wang
    • Weidong Li
  • View Affiliations / Copyright

    Affiliations: The 1st Ward of the Medical Department, Affiliated Cancer Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510095, P.R. China, Department of Oncology, Guangzhou Chest Hospital, Guangzhou, Guangdong 510095, P.R. China
    Copyright: © Dong et al. This is an open access article distributed under the terms of Creative Commons Attribution License [CC BY_NC 3.0].
  • Pages: 1016-1022
    |
    Published online on: March 19, 2015
       https://doi.org/10.3892/mmr.2015.3516
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Abstract

Hepatocellular carcinoma (HCC) is the fifth most common cancer type worldwide and the third leading cause of cancer-associated mortality. To date, its pathogenesis has remained poorly understood. Previous studies have demonstrated that deregulated microRNA (miR) participates in hepatocarcinogenesis. In the present study, miR‑218 and miR‑520a were observed to be downregulated in human HCC cells relative to normal hepatic cells. Overexpression of miR‑218 or miR‑520a inhibited cell proliferation and induced cell cycle arrest at the G0/G1 phase checkpoint. Furthermore, a dual‑luciferase reporter assay identified that E2F2 was a novel direct target of miR‑218 but not miR‑520a in HCC. In addition, miR‑218 and miR‑520a were observed to negatively regulate E2F2 mRNA and protein levels. This suggested that miR‑218 regulated the expression of E2F2 via directly binding to its 3'‑untranslated region, whereas miR‑520a affected E2F2 expression indirectly. In conclusion, these results indicated that miR‑218 and miR‑520a are crucial in the development of HCC via the inhibition of cell proliferation and cycle progression by downregulating E2F2.
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Copy and paste a formatted citation
Spandidos Publications style
Dong Y, Zou J, Su S, Huang H, Deng Y, Wang B and Li W: MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma. Mol Med Rep 12: 1016-1022, 2015.
APA
Dong, Y., Zou, J., Su, S., Huang, H., Deng, Y., Wang, B., & Li, W. (2015). MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma. Molecular Medicine Reports, 12, 1016-1022. https://doi.org/10.3892/mmr.2015.3516
MLA
Dong, Y., Zou, J., Su, S., Huang, H., Deng, Y., Wang, B., Li, W."MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma". Molecular Medicine Reports 12.1 (2015): 1016-1022.
Chicago
Dong, Y., Zou, J., Su, S., Huang, H., Deng, Y., Wang, B., Li, W."MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma". Molecular Medicine Reports 12, no. 1 (2015): 1016-1022. https://doi.org/10.3892/mmr.2015.3516
Copy and paste a formatted citation
x
Spandidos Publications style
Dong Y, Zou J, Su S, Huang H, Deng Y, Wang B and Li W: MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma. Mol Med Rep 12: 1016-1022, 2015.
APA
Dong, Y., Zou, J., Su, S., Huang, H., Deng, Y., Wang, B., & Li, W. (2015). MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma. Molecular Medicine Reports, 12, 1016-1022. https://doi.org/10.3892/mmr.2015.3516
MLA
Dong, Y., Zou, J., Su, S., Huang, H., Deng, Y., Wang, B., Li, W."MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma". Molecular Medicine Reports 12.1 (2015): 1016-1022.
Chicago
Dong, Y., Zou, J., Su, S., Huang, H., Deng, Y., Wang, B., Li, W."MicroRNA-218 and microRNA-520a inhibit cell proliferation by downregulating E2F2 in hepatocellular carcinoma". Molecular Medicine Reports 12, no. 1 (2015): 1016-1022. https://doi.org/10.3892/mmr.2015.3516
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