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Article Open Access

Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells

  • Authors:
    • Bin Chen
    • Jian Ma
    • Chunwei Li
    • Yong Wang
  • View Affiliations / Copyright

    Affiliations: The Sixth Department of Ophthalmology, The Fourth People's Hospital of Shenyang, Shenyang, Liaoning 110031, P.R. China, Research Office, Shenyang Medical College, Shenyang, Liaoning 110034, P.R. China, Department of Ophthalmology, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China, The Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
    Copyright: © Chen et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 16-24
    |
    Published online on: May 8, 2018
       https://doi.org/10.3892/mmr.2018.8987
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Abstract

Long noncoding RNAs (lncRNAs) are associated with various diseases including cataracts. The role of lncRNA potassium voltage‑gated channel subfamily Q member 1 opposite strand/antisense transcript 1 (KCNQ1OT1) on lens epithelial cell (LEC) proliferation and epithelial‑mesenchymal transition (EMT) in cataracts disease remains unclear. In the present study, KCNQ1OT1 and mothers against decapentaplegic homolog (SMAD)4 expression levels were upregulated in human cataract lens posterior capsular samples and in transforming growth factor (TGF)‑β2‑treated SRA01/04 cells, as demonstrated by reverse transcription‑quantitative polymerase chain reaction, immunohistochemical staining and western blot analyses. A further loss of function test revealed that suppression of KCNQ1OT1 inhibited the proliferation and EMT of TGF‑β2‑treated SRA01/04 cells. Additionally, the present study reported that increase and decrease of KCNQ1OT1 regulated SMAD4 expression, which indicated that SMAD4 may be a downstream gene of KCNQ1OT1. Finally, a constructed SMAD4 RNA interference experiment confirmed that the function of KCNQ1OT1 was to act on LEC proliferation and EMT, and this was achieved via the SMAD4 signaling pathway. The findings of the present study may provide a novel target for molecular therapy of cataracts disease.
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Copy and paste a formatted citation
Spandidos Publications style
Chen B, Ma J, Li C and Wang Y: Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells. Mol Med Rep 18: 16-24, 2018.
APA
Chen, B., Ma, J., Li, C., & Wang, Y. (2018). Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells. Molecular Medicine Reports, 18, 16-24. https://doi.org/10.3892/mmr.2018.8987
MLA
Chen, B., Ma, J., Li, C., Wang, Y."Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells". Molecular Medicine Reports 18.1 (2018): 16-24.
Chicago
Chen, B., Ma, J., Li, C., Wang, Y."Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells". Molecular Medicine Reports 18, no. 1 (2018): 16-24. https://doi.org/10.3892/mmr.2018.8987
Copy and paste a formatted citation
x
Spandidos Publications style
Chen B, Ma J, Li C and Wang Y: Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells. Mol Med Rep 18: 16-24, 2018.
APA
Chen, B., Ma, J., Li, C., & Wang, Y. (2018). Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells. Molecular Medicine Reports, 18, 16-24. https://doi.org/10.3892/mmr.2018.8987
MLA
Chen, B., Ma, J., Li, C., Wang, Y."Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells". Molecular Medicine Reports 18.1 (2018): 16-24.
Chicago
Chen, B., Ma, J., Li, C., Wang, Y."Long noncoding RNA KCNQ1OT1 promotes proliferation and epithelial‑mesenchymal transition by regulation of SMAD4 expression in lens epithelial cells". Molecular Medicine Reports 18, no. 1 (2018): 16-24. https://doi.org/10.3892/mmr.2018.8987
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