Open Access

MALAT1 affects ovarian cancer cell behavior and patient survival

  • Authors:
    • Qunbo Lin
    • Wencai Guan
    • Weimin Ren
    • Lingyun Zhang
    • Jinguo Zhang
    • Guoxiong Xu
  • View Affiliations

  • Published online on: April 19, 2018     https://doi.org/10.3892/or.2018.6384
  • Pages: 2644-2652
  • Copyright: © Lin et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Epithelial ovarian cancer (EOC) is one of the most lethal malignancies of the female reproductive organs. Increasing evidence has revealed that long non‑coding RNAs (lncRNAs) participate in tumorigenesis. Metastasis associated lung adenocarcinoma transcript 1 (MALAT1) is an lncRNA and plays a role in various types of tumors. However, the function of MALAT1 on cellular behavior in EOC remains unclear. The current study explored the expression of MALAT1 in ovarian cancer tissues and in EOC cell lines. Quantitative RT‑PCR analysis revealed that the expression of MALAT1 was higher in human ovarian malignant tumor tissues and EOC cells than in normal ovarian tissues and non‑tumorous human ovarian surface epithelial cells, respectively. By analyzing the online database Kaplan‑Meier Plotter, MALAT1 was identified to be correlated with the overall survival (OS) and progression‑free survival (PFS) of patients with ovarian cancer. Furthermore, knockdown of MALAT1 by small interfering RNA (siRNA) significantly decreased EOC cell viability, migration, and invasion. Finally, dual‑luciferase reporter assays demonstrated that MALAT1 interacted with miR‑143‑3p, a miRNA that plays a role in EOC as demonstrated in our previous study. Inhibition of MALAT1 resulted in an increase of miR‑143‑3p expression, leading to a decrease of CMPK protein expression. In conclusion, our results indicated that MALAT1 was overexpressed in EOC. Silencing of MALAT1 decreased EOC cell viability and inhibited EOC cell migration and invasion. These data revealed that MALAT1 may serve as a new therapeutic target of human EOC.
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June-2018
Volume 39 Issue 6

Print ISSN: 1021-335X
Online ISSN:1791-2431

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Spandidos Publications style
Lin Q, Guan W, Ren W, Zhang L, Zhang J and Xu G: MALAT1 affects ovarian cancer cell behavior and patient survival. Oncol Rep 39: 2644-2652, 2018.
APA
Lin, Q., Guan, W., Ren, W., Zhang, L., Zhang, J., & Xu, G. (2018). MALAT1 affects ovarian cancer cell behavior and patient survival. Oncology Reports, 39, 2644-2652. https://doi.org/10.3892/or.2018.6384
MLA
Lin, Q., Guan, W., Ren, W., Zhang, L., Zhang, J., Xu, G."MALAT1 affects ovarian cancer cell behavior and patient survival". Oncology Reports 39.6 (2018): 2644-2652.
Chicago
Lin, Q., Guan, W., Ren, W., Zhang, L., Zhang, J., Xu, G."MALAT1 affects ovarian cancer cell behavior and patient survival". Oncology Reports 39, no. 6 (2018): 2644-2652. https://doi.org/10.3892/or.2018.6384