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Article

MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1

  • Authors:
    • Jian Yao
    • Ping Zhang
    • Jin Li
    • Wei Xu
  • View Affiliations / Copyright

    Affiliations: Department of Integrated Traditional Chinese and Western Medicine, First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150001, P.R. China
  • Pages: 1097-1104
    |
    Published online on: May 17, 2017
       https://doi.org/10.3892/ol.2017.6200
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Abstract

There are accumulating reports that microRNAs are dysregulated in a number of human cancer types, and that they may function as tumor suppressors or oncogenes in tumorigenesis and tumor development. microRNA‑215 (miR‑215) has been identified as a tumor suppressor in epithelial ovarian, pancreatic, non‑small cell lung and colon cancer, whereas it may act as an oncogene in gastric and cervical cancer. The role of miR‑215 in breast cancer carcinogenesis and progression has yet to be elucidated. In the present study, the expression level of miR‑215 was determined in breast cancer tissues and cell lines using the reverse transcription‑quantitative polymerase chain reaction. The effects of miR-215 overexpression on proliferation and the invasive capacity of breast cancer cells were assessed using MTT and cell invasion assays. The results revealed that miR‑215 was significantly downregulated in breast cancer tissues and cell lines. Restoration of miR‑215 expression inhibited the proliferation and invasion of breast cancer cells. The underlying molecular mechanism for the suppression of proliferation and invasion by miR‑215 was investigated. AKT serine/threonine kinase 1 (AKT1) was validated as a novel direct target of miR‑215, and the effect of AKT1 small interfering RNA mimicked the effect of miR‑215 overexpression in breast cancer cells. These results indicated that miR‑215 acted as a tumor suppressor, and that its downregulation in tumor tissues may contribute to the carcinogenesis and progression of breast cancer, indicating that miR‑215 may be a novel therapeutic target for the treatment of breast cancer.
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Copy and paste a formatted citation
Spandidos Publications style
Yao J, Zhang P, Li J and Xu W: MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1. Oncol Lett 14: 1097-1104, 2017.
APA
Yao, J., Zhang, P., Li, J., & Xu, W. (2017). MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1. Oncology Letters, 14, 1097-1104. https://doi.org/10.3892/ol.2017.6200
MLA
Yao, J., Zhang, P., Li, J., Xu, W."MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1". Oncology Letters 14.1 (2017): 1097-1104.
Chicago
Yao, J., Zhang, P., Li, J., Xu, W."MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1". Oncology Letters 14, no. 1 (2017): 1097-1104. https://doi.org/10.3892/ol.2017.6200
Copy and paste a formatted citation
x
Spandidos Publications style
Yao J, Zhang P, Li J and Xu W: MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1. Oncol Lett 14: 1097-1104, 2017.
APA
Yao, J., Zhang, P., Li, J., & Xu, W. (2017). MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1. Oncology Letters, 14, 1097-1104. https://doi.org/10.3892/ol.2017.6200
MLA
Yao, J., Zhang, P., Li, J., Xu, W."MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1". Oncology Letters 14.1 (2017): 1097-1104.
Chicago
Yao, J., Zhang, P., Li, J., Xu, W."MicroRNA-215 acts as a tumor suppressor in breast cancer by targeting AKT serine/threonine kinase 1". Oncology Letters 14, no. 1 (2017): 1097-1104. https://doi.org/10.3892/ol.2017.6200
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