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Article Open Access

MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer

  • Authors:
    • Chunfeng Wang
    • Juan Wang
    • Jing Zhang
    • Yongxiang Li
    • Qinghui Sun
    • Feng Guo
    • Xiupeng An
  • View Affiliations / Copyright

    Affiliations: Department of Thyroid and Breast Surgery, The Second People's Hospital of Liaocheng, The Second Hospital of Liaocheng Affiliated to Shandong First Medical University, Linqing of Liaocheng, Shandong 252600, P.R. China, Department of Hematology and Oncology, The People's Hospital of Linqing, Linqing of Liaocheng, Shandong 252600, P.R. China, Department of Emergency, The Second People's Hospital of Liaocheng, The Second Hospital of Liaocheng Affiliated to Shandong First Medical University, Linqing of Liaocheng, Shandong 252600, P.R. China
    Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 386
    |
    Published online on: October 29, 2020
       https://doi.org/10.3892/ol.2020.12249
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Abstract

Dysregulated microRNAs (miRNAs) serve vital roles in the progression and prognosis of breast cancer. miR‑623 has been reported to influence the progression of numerous other cancers, such as lung adenocarcinoma and hepatocellular carcinoma, however, its role in breast cancer remains unclear. In the present study, the mRNA expression of miR‑623 was studied in 121 pairs of breast cancer and adjacent normal tissues and cultured cell lines by reverse‑transcription quantitative PCR. The association between miR‑623 expression and clinical characteristics or the overall survival rate of patients was investigated by the χ2 test or Cox regression analysis, respectively. The role of miR‑623 in cell proliferation, migration and invasion of breast cancer cells was evaluated by cell transfection to regulate miR‑623 expression and the CCK8 and Transwell assays, respectively. miR‑623 was downregulated in breast cancer tissues and cell lines compared with normal tissues and breast epithelial cell lines. The χ2 test demonstrated that the downregulation of miR‑623 was associated with the tumor node metastasis (TNM) stage of patients with breast cancer. miR‑623 and TNM stage were considered as two independent prognostic factors for breast cancer. Additionally, cell proliferation, migration, and invasion of breast cancer cells were promoted by the downregulation of miR‑623, while upregulation of miR‑623 led to inhibition of the aforementioned processes. Downregulation of miR‑623 in breast cancer is associated with the development of breast cancer and indicates a poor prognosis of patients. The downregulation of miR‑623 promotes cell proliferation, migration and invasion of breast cancer. The findings of the present study indicate that miR‑623 functions as a prognosis biomarker and a tumor suppressor in breast cancer, which provides a potential therapeutic target for patients with breast cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Wang C, Wang J, Zhang J, Li Y, Sun Q, Guo F and An X: MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer. Oncol Lett 20: 386, 2020.
APA
Wang, C., Wang, J., Zhang, J., Li, Y., Sun, Q., Guo, F., & An, X. (2020). MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer. Oncology Letters, 20, 386. https://doi.org/10.3892/ol.2020.12249
MLA
Wang, C., Wang, J., Zhang, J., Li, Y., Sun, Q., Guo, F., An, X."MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer". Oncology Letters 20.6 (2020): 386.
Chicago
Wang, C., Wang, J., Zhang, J., Li, Y., Sun, Q., Guo, F., An, X."MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer". Oncology Letters 20, no. 6 (2020): 386. https://doi.org/10.3892/ol.2020.12249
Copy and paste a formatted citation
x
Spandidos Publications style
Wang C, Wang J, Zhang J, Li Y, Sun Q, Guo F and An X: MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer. Oncol Lett 20: 386, 2020.
APA
Wang, C., Wang, J., Zhang, J., Li, Y., Sun, Q., Guo, F., & An, X. (2020). MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer. Oncology Letters, 20, 386. https://doi.org/10.3892/ol.2020.12249
MLA
Wang, C., Wang, J., Zhang, J., Li, Y., Sun, Q., Guo, F., An, X."MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer". Oncology Letters 20.6 (2020): 386.
Chicago
Wang, C., Wang, J., Zhang, J., Li, Y., Sun, Q., Guo, F., An, X."MicroRNA‑623 inhibits tumor progression and is a predictor of poor prognosis of breast cancer". Oncology Letters 20, no. 6 (2020): 386. https://doi.org/10.3892/ol.2020.12249
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