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International Journal of Molecular Medicine
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Article

CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis

  • Authors:
    • Lin Zhang
    • Yingna Li
    • Chunlian Liang
    • Weilin Yang
  • View Affiliations / Copyright

    Affiliations: Department of Geriatrics, The Second Affiliated Hospital, Medical School of Xi'an Jiaotong University,Xi'an, Shaanxi 710004, P.R. China
  • Pages: 478-486
    |
    Published online on: November 25, 2013
       https://doi.org/10.3892/ijmm.2013.1565
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Abstract

Idiopathic pulmonary fibrosis (IPF) is a chronic and progressive interstitial lung disease with unknown etiology and undefined treatment modality. Fibroblasts are regarded as the major cell type that mediates the onset and progression of lung fibrosis by secreting large amounts of extracellular matrix (ECM) proteins, such as connective tissue growth factor (CTGF/CCN2). Current knowledge confers a crucial role of CCN2 in lung fibrosis. CCN5, another member of the CCN family, has been suggested to play an inhibitory role in some fibrotic diseases, such as cardiac fibrosis. However, the role of CCN5 in the process of IPF remains unknown. In the present study, using western blot analysis, we demonstrate that CCN2 is highly expressed in fibroblasts derived from IPF tissue, but is only slightly expressed in normal human lung fibroblasts. However, CCN5 was weakly expressed in all the above cells. qRT-PCR revealed that transforming growth factor (TGF)-β1 stimulation increased CCN2 expression in the IPF-derived cultures of primary human lung fibroblasts (PIFs) in a time- and concentration-dependent manner, but only slightly affected the expression of CCN5. The overexpression of CCN5 induced by the transfection of PIFs with recombinant plasmid did not affect cell viability, proliferation and apoptosis; however, it significantly suppressed the expression of CCN2, α-smooth muscle actin (α-SMA) and collagen type I. The TGF-β1-induced upregulation of the phosphorylation of Akt was reversed by CCN5 overexpression. Our results also demonstrated that adenovirus-mediated CCN5 overexpression in a mouse model of bleomycin-induced IPF significantly decreased the hydroxyproline content in the lungs, as well as TGF-β1 expression in bronchoalveolar lavage fluid. Taken together, our data demonstrate that CCN5 exerts an inhibitory effect on the fibrotic phenotypes of pulmonary fibroblasts in vitro and in vivo, and as such may be a promising target for the treatment of IPF.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang L, Li Y, Liang C and Yang W: CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis . Int J Mol Med 33: 478-486, 2014.
APA
Zhang, L., Li, Y., Liang, C., & Yang, W. (2014). CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis . International Journal of Molecular Medicine, 33, 478-486. https://doi.org/10.3892/ijmm.2013.1565
MLA
Zhang, L., Li, Y., Liang, C., Yang, W."CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis ". International Journal of Molecular Medicine 33.2 (2014): 478-486.
Chicago
Zhang, L., Li, Y., Liang, C., Yang, W."CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis ". International Journal of Molecular Medicine 33, no. 2 (2014): 478-486. https://doi.org/10.3892/ijmm.2013.1565
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang L, Li Y, Liang C and Yang W: CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis . Int J Mol Med 33: 478-486, 2014.
APA
Zhang, L., Li, Y., Liang, C., & Yang, W. (2014). CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis . International Journal of Molecular Medicine, 33, 478-486. https://doi.org/10.3892/ijmm.2013.1565
MLA
Zhang, L., Li, Y., Liang, C., Yang, W."CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis ". International Journal of Molecular Medicine 33.2 (2014): 478-486.
Chicago
Zhang, L., Li, Y., Liang, C., Yang, W."CCN5 overexpression inhibits profibrotic phenotypes via the PI3K/Akt signaling pathway in lung fibroblasts isolated from patients with idiopathic pulmonary fibrosis and in an in vivo model of lung fibrosis ". International Journal of Molecular Medicine 33, no. 2 (2014): 478-486. https://doi.org/10.3892/ijmm.2013.1565
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