Open Access

Silencing of MALAT1 inhibits migration and invasion by sponging miR‑1‑3p in prostate cancer cells

  • Authors:
    • Xiaofan Dai
    • Zuowen Liang
    • Lingyun Liu
    • Kaimin Guo
    • Shengqi Xu
    • Hongliang Wang
  • View Affiliations

  • Published online on: August 22, 2019     https://doi.org/10.3892/mmr.2019.10602
  • Pages: 3499-3508
  • Copyright: © Dai et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Prostate cancer is a common malignancy with a high mortality rate. Long non‑coding RNA metastasis associated with lung adenocarcinoma transcript 1 (MALAT1) has been reported to serve tumor‑promoting roles. However, the underlying mechanism requires further examination. In the present study, it was demonstrated that MALAT1 was increased while microRNA (miR/miRNA)‑1‑3p was decreased in prostate cancer cell lines. The silencing of MALAT1 inhibited migration, invasion and epithelial‑mesenchymal transition, when epithelial (E)‑cadherin expression level was increased, and neural (N)‑cadherin, vimentin, Slug and Snail expression levels were decreased. Dual‑luciferase reporter assay results demonstrated that miR‑1‑3p bound to MALAT1 and coronin 1C (CORO1C) 3' untranslated region, and MALAT1 competed with CORO1C for the binding sites of miR‑1‑3p. MALAT1 inhibited the expression of miR‑1‑3p and vice versa. MALAT1 knockdown induced the decline of CORO1C, which was subsequently recovered by the miR‑1‑3p inhibitor. In addition, by inhibiting miR‑1‑3p or overexpressing CORO1C, the silencing of MALAT1‑induced phenotypic alterations were restored. In conclusion, MALAT1 serving as a degradable miRNA sponge, may sequester miR‑1‑3p from CORO1C and by silencing MALAT1, migration, invasion and epithelial‑mesenchymal transition may be inhibited in prostate cancer cells. MALAT1 and CORO1C may serve as novel clinical therapeutic targets for prostate cancer.

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October 2019
Volume 20 Issue 4

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Copy and paste a formatted citation
APA
Dai, X., Liang, Z., Liu, L., Guo, K., Xu, S., & Wang, H. (2019). Silencing of MALAT1 inhibits migration and invasion by sponging miR‑1‑3p in prostate cancer cells. Molecular Medicine Reports, 20, 3499-3508. https://doi.org/10.3892/mmr.2019.10602
MLA
Dai, X., Liang, Z., Liu, L., Guo, K., Xu, S., Wang, H."Silencing of MALAT1 inhibits migration and invasion by sponging miR‑1‑3p in prostate cancer cells". Molecular Medicine Reports 20.4 (2019): 3499-3508.
Chicago
Dai, X., Liang, Z., Liu, L., Guo, K., Xu, S., Wang, H."Silencing of MALAT1 inhibits migration and invasion by sponging miR‑1‑3p in prostate cancer cells". Molecular Medicine Reports 20, no. 4 (2019): 3499-3508. https://doi.org/10.3892/mmr.2019.10602