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Article

miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway

  • Authors:
    • Xuemin Liu
    • Anpeng Zhang
    • Junxi Xiang
    • Yi Lv
    • Xufeng Zhang
  • View Affiliations / Copyright

    Affiliations: Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
  • Pages: 1385-1392
    |
    Published online on: July 25, 2016
       https://doi.org/10.3892/or.2016.4971
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Abstract

Hepatocellular carcinoma (HCC) is a highly vascularized tumor and the third ranking contributor of tumor-associated death. Our previous study corroborated the inhibitory roles of miRNA-451 (miR-451) in HCC cell growth and invasion. However, its effect on angiogenesis in HCC remains poorly elucidated. In this study, overexpression of miR-451 clearly attenuated the promoting effects of HCC cells on cell proliferation, migration and tube formation of human umbilical vein endothelial cells (HUVECs). Importantly, ectopic expression of miR‑451 also attenuated tumor growth and angiogenesis in nude mice. In vitro, the expression of IL‑6 receptor (IL‑6R) was reduced and identified as a direct target of miR‑451 by bioinformatics and a dual‑firefly luciferase reporter assay. Moreover, upregulation of IL‑6R strikingly ameliorated the inhibitory function of conditioned medium from miR‑451‑transfected HCC cells in HUVEC proliferation, migration and tube formation. Further mechanistic assay substantiated that miR‑451 restrained vascular endothelial growth factor (VEGF) production of HCC cells by targeting IL‑6R‑STAT3 signaling as evidenced that IL‑6R upregulation induced the increase in VEGF levels and interrupting signal transducer and activator of transcription 3 (STAT3) signaling with ectopic expression of dominant-negative STAT3 (STAT3D) markedly decreased VEGF expression. Additionally, conditioned medium of miR-451-overexpressed HCC also impaired the VEGF receptor 2 (VEGFR2) signaling in HUVECs. Accordingly, miR-451 may function as a potential suppressor of tumor angiogenesis in HCC by targeting IL-6R-STAT3-VEGF signaling, suggesting a promising therapeutic avenue for managing HCC.
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Copy and paste a formatted citation
Spandidos Publications style
Liu X, Zhang A, Xiang J, Lv Y and Zhang X: miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway. Oncol Rep 36: 1385-1392, 2016.
APA
Liu, X., Zhang, A., Xiang, J., Lv, Y., & Zhang, X. (2016). miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway. Oncology Reports, 36, 1385-1392. https://doi.org/10.3892/or.2016.4971
MLA
Liu, X., Zhang, A., Xiang, J., Lv, Y., Zhang, X."miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway". Oncology Reports 36.3 (2016): 1385-1392.
Chicago
Liu, X., Zhang, A., Xiang, J., Lv, Y., Zhang, X."miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway". Oncology Reports 36, no. 3 (2016): 1385-1392. https://doi.org/10.3892/or.2016.4971
Copy and paste a formatted citation
x
Spandidos Publications style
Liu X, Zhang A, Xiang J, Lv Y and Zhang X: miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway. Oncol Rep 36: 1385-1392, 2016.
APA
Liu, X., Zhang, A., Xiang, J., Lv, Y., & Zhang, X. (2016). miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway. Oncology Reports, 36, 1385-1392. https://doi.org/10.3892/or.2016.4971
MLA
Liu, X., Zhang, A., Xiang, J., Lv, Y., Zhang, X."miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway". Oncology Reports 36.3 (2016): 1385-1392.
Chicago
Liu, X., Zhang, A., Xiang, J., Lv, Y., Zhang, X."miR-451 acts as a suppressor of angiogenesis in hepatocellular carcinoma by targeting the IL-6R-STAT3 pathway". Oncology Reports 36, no. 3 (2016): 1385-1392. https://doi.org/10.3892/or.2016.4971
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