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Article Open Access

MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells

  • Authors:
    • Niraj Maskey
    • Dengfeng Li
    • Hui Xu
    • Hongming Song
    • Chenyang Wu
    • Kaiyao Hua
    • Jialu Song
    • Lin Fang
  • View Affiliations / Copyright

    Affiliations: Department of Thyroid and Breast Surgery, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai 200072, P.R. China
    Copyright: © Maskey et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2261-2267
    |
    Published online on: June 21, 2017
       https://doi.org/10.3892/ol.2017.6439
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Abstract

MicroRNAs (miRNAs/miRs) are 19-25 nucleotide-long, non‑coding RNAs that regulate the expression of target genes at the post‑transcriptional level. In the present study, the role of miR‑340 in breast cancer (BC) was investigated. The overexpression of miR‑340 significantly inhibited the proliferation, migration and invasion of human breast MDA‑MB‑231 cancer cells in vitro. The Rho‑associated, coiled‑coil containing protein kinase 1 (ROCK1) gene was identified as a target of miR‑340; its expression was downregulated by overexpression of miR‑340 by binding to its 3'‑untranslated region. The short interfering RNA‑mediated silencing of ROCK1 was also performed, which phenocopied the effects of miR‑340 overexpression. An inhibitor of miR‑340 was used to suppress miR‑340 expression, which led to increased expression of ROCK1, thus improving the proliferation, migration and invasion of MDA‑MB‑231 cells. Data from the present study suggest that miR‑340 inhibits MDA‑MB‑231 cell growth and its downregulation may lead to the progression and metastasis of BC. Thus, miR340 may act as a tumor‑suppressor agent that could serve a key role in the diagnosis and therapy of BC.
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Copy and paste a formatted citation
Spandidos Publications style
Maskey N, Li D, Xu H, Song H, Wu C, Hua K, Song J and Fang L: MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells. Oncol Lett 14: 2261-2267, 2017.
APA
Maskey, N., Li, D., Xu, H., Song, H., Wu, C., Hua, K. ... Fang, L. (2017). MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells. Oncology Letters, 14, 2261-2267. https://doi.org/10.3892/ol.2017.6439
MLA
Maskey, N., Li, D., Xu, H., Song, H., Wu, C., Hua, K., Song, J., Fang, L."MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells". Oncology Letters 14.2 (2017): 2261-2267.
Chicago
Maskey, N., Li, D., Xu, H., Song, H., Wu, C., Hua, K., Song, J., Fang, L."MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells". Oncology Letters 14, no. 2 (2017): 2261-2267. https://doi.org/10.3892/ol.2017.6439
Copy and paste a formatted citation
x
Spandidos Publications style
Maskey N, Li D, Xu H, Song H, Wu C, Hua K, Song J and Fang L: MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells. Oncol Lett 14: 2261-2267, 2017.
APA
Maskey, N., Li, D., Xu, H., Song, H., Wu, C., Hua, K. ... Fang, L. (2017). MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells. Oncology Letters, 14, 2261-2267. https://doi.org/10.3892/ol.2017.6439
MLA
Maskey, N., Li, D., Xu, H., Song, H., Wu, C., Hua, K., Song, J., Fang, L."MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells". Oncology Letters 14.2 (2017): 2261-2267.
Chicago
Maskey, N., Li, D., Xu, H., Song, H., Wu, C., Hua, K., Song, J., Fang, L."MicroRNA-340 inhibits invasion and metastasis by downregulating ROCK1 in breast cancer cells". Oncology Letters 14, no. 2 (2017): 2261-2267. https://doi.org/10.3892/ol.2017.6439
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