Long noncoding RNA TUG1 promotes cardiac fibroblast transformation to myofibroblasts via miR‑29c in chronic hypoxia

  • Authors:
    • Yun Zhu
    • Zezhou Feng
    • Zhao Jian
    • Yingbin Xiao
  • View Affiliations

  • Published online on: July 27, 2018     https://doi.org/10.3892/mmr.2018.9327
  • Pages: 3451-3460
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Abstract

Cardiac fibroblast‑myofibroblast transformation (FMT) contributes to the fibrotic deterioration evoked by chronic hypoxia. Growing evidence implicates long noncoding RNAs (lncRNAs) in various types of cardiac physiological and pathological processes, especially in cardiac fibrosis. In the present study, the lncRNA Taurine Upregulated Gene 1 (TUG1), reported as a regulator of hypoxia fibrosis in the lungs, was found to also be an important regulator of cardiac FMT. Specifically, the possible role of TUG1 in cardiac FMT and fibrosis under chronic hypoxia was investigated. It was revealed that the degree of fibrosis in heart tissues collected from congenital heart surgery patients with low pulse oxygen saturation and mice housed under chronic hypoxic and atmospheric pressure conditions was negatively correlated with pulse oxygen saturation. Moreover, TUG1 expression was positively correlated with the degree of fibrosis but negatively correlated with pulse oxygen saturation. Cardiac fibroblasts showed increased myofibroblast marker, collagen I and α‑SMA expression levels as the hypoxia time increased. TUG1 knockdown ameliorated the hypoxia‑induced FMT. A bioinformatics analysis predicted that TUG1 had miR‑29c binding sites in its 3'‑UTR and miR‑29c is a key regulator of cardiac fibrosis. The present study demonstrated that TUG1, along with miR‑29c, may contribute to cardiac FMT activation and promote fibrosis in chronic hypoxia.
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September-2018
Volume 18 Issue 3

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

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Spandidos Publications style
Zhu Y, Feng Z, Jian Z and Xiao Y: Long noncoding RNA TUG1 promotes cardiac fibroblast transformation to myofibroblasts via miR‑29c in chronic hypoxia. Mol Med Rep 18: 3451-3460, 2018
APA
Zhu, Y., Feng, Z., Jian, Z., & Xiao, Y. (2018). Long noncoding RNA TUG1 promotes cardiac fibroblast transformation to myofibroblasts via miR‑29c in chronic hypoxia. Molecular Medicine Reports, 18, 3451-3460. https://doi.org/10.3892/mmr.2018.9327
MLA
Zhu, Y., Feng, Z., Jian, Z., Xiao, Y."Long noncoding RNA TUG1 promotes cardiac fibroblast transformation to myofibroblasts via miR‑29c in chronic hypoxia". Molecular Medicine Reports 18.3 (2018): 3451-3460.
Chicago
Zhu, Y., Feng, Z., Jian, Z., Xiao, Y."Long noncoding RNA TUG1 promotes cardiac fibroblast transformation to myofibroblasts via miR‑29c in chronic hypoxia". Molecular Medicine Reports 18, no. 3 (2018): 3451-3460. https://doi.org/10.3892/mmr.2018.9327