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Article

miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression

  • Authors:
    • Fujun Li
    • Chaohui Gu
    • Fengyan Tian
    • Zhankui Jia
    • Zhenglei Meng
    • Yinghui Ding
    • Jinjian Yang
  • View Affiliations / Copyright

    Affiliations: Department of Urology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China, Department of Pediatrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, P.R. China
  • Pages: 2859-2865
    |
    Published online on: March 8, 2016
       https://doi.org/10.3892/or.2016.4663
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Abstract

Prostate cancer is the most common solid-organ malignancy and the second leading cause of cancer-related death in males. The oncogenic effect of leucine-rich repeat-containing G protein-coupled receptor (LGR) 4 has been recognized in the formation of various types of cancers, yet its regulatory mechanism in prostate cancer is still not fully understood. Previous study has shown that LGR4 may be a new responsive gene of interleukin-6 (IL-6) in cancer progression. In the present study, we established the LNCaP-IL-6+ cell subline by long-term incubation with a low concentration of IL-6 and explored the regulatory role of miR-218, a tumor-suppressing miRNA, in IL-6-induced LGR4 expression and LNCaP-IL-6+ cell proliferation and invasion. The results showed that miR-218 expression was gradually decreased and IL-6 expression was gradually increased in the process of prostate cancer progression from normal prostate, benign prostatic hyperplasia to prostate cancer, and from LNCaP to LNCaP-IL-6+ cells. Notably, we also found that miR-218 inhibited the expression of cell cycle regulatory protein cyclin A1 and invasion-related matrix metalloproteinase-9 protein induced by IL-6, and impeded the accelerative effect of IL-6 on LNCaP-IL-6+ cell proliferation, cell cycle progression and cell invasion. Moreover, our results confirmed that miR-218 directly targets LGR4 and modulated the PI3K/Akt and Wnt/β-catenin pathways in the LNCaP-IL-6+ cells. Taken together, these data clearly demonstrated the involvement of the miR-218/LGR4 regulatory pathway in IL-6-induced cell proliferation and invasion in LNCaP-IL-6+ cells via PI3K/Akt and Wnt/β-catenin signaling, providing new insight into therapeutics for inflammation-induced prostate cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Li F, Gu C, Tian F, Jia Z, Meng Z, Ding Y and Yang J: miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression. Oncol Rep 35: 2859-2865, 2016.
APA
Li, F., Gu, C., Tian, F., Jia, Z., Meng, Z., Ding, Y., & Yang, J. (2016). miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression. Oncology Reports, 35, 2859-2865. https://doi.org/10.3892/or.2016.4663
MLA
Li, F., Gu, C., Tian, F., Jia, Z., Meng, Z., Ding, Y., Yang, J."miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression". Oncology Reports 35.5 (2016): 2859-2865.
Chicago
Li, F., Gu, C., Tian, F., Jia, Z., Meng, Z., Ding, Y., Yang, J."miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression". Oncology Reports 35, no. 5 (2016): 2859-2865. https://doi.org/10.3892/or.2016.4663
Copy and paste a formatted citation
x
Spandidos Publications style
Li F, Gu C, Tian F, Jia Z, Meng Z, Ding Y and Yang J: miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression. Oncol Rep 35: 2859-2865, 2016.
APA
Li, F., Gu, C., Tian, F., Jia, Z., Meng, Z., Ding, Y., & Yang, J. (2016). miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression. Oncology Reports, 35, 2859-2865. https://doi.org/10.3892/or.2016.4663
MLA
Li, F., Gu, C., Tian, F., Jia, Z., Meng, Z., Ding, Y., Yang, J."miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression". Oncology Reports 35.5 (2016): 2859-2865.
Chicago
Li, F., Gu, C., Tian, F., Jia, Z., Meng, Z., Ding, Y., Yang, J."miR-218 impedes IL-6-induced prostate cancer cell proliferation and invasion via suppression of LGR4 expression". Oncology Reports 35, no. 5 (2016): 2859-2865. https://doi.org/10.3892/or.2016.4663
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