Paracrine factors from mesenchymal stem cells attenuate epithelial injury and lung fibrosis

  • Authors:
    • Qinqin Shen
    • Bing Chen
    • Zhifeng Xiao
    • Lifen Zhao
    • Xuefeng Xu
    • Xuan Wan
    • Mulan Jin
    • Jianwu Dai
    • Huaping Dai
  • View Affiliations

  • Published online on: December 15, 2014     https://doi.org/10.3892/mmr.2014.3092
  • Pages: 2831-2837
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Abstract

Paracrine factors are currently considered to be the major mechanism through which mesenchymal stem cells (MSCs) exert their actions. The aim of this study was to investigate the protective effects of conditioned medium (CM) from bone marrow mesenchymal stem cells (MSC) on bleomycin (BLM)‑induced lung injury and fibrosis, both in vitro and in vivo. A549 human non‑small cell lung cancer epithelial cells were cultured in serum‑free medium, or MSC‑CM, both with or without BLM. The protective effects of MSC‑CM was determined by MTT assay to assess cell viability and Annexin V‑PE to assess apoptosis. Rats were intratracheally injected with MSC‑CM, saline, or conditioned medium from fibroblasts on day 0 and day 3 after intratracheal administration of BLM, and were sacrificed on day 28. Lung injury and fibrosis were assessed by histological assessment, Ashcroft score, and hydroxyproline assay; lung cell apoptosis was detected using terminal deoxynucleotidyl transferase dUTP nick end labeling assay. In comparison to the control group (0.17±0.01), 8 and 16% MSC‑CM had a significant stimulatory effect on A549 cellular proliferation (0.24±0.03 and 0.24±0.04, respectively, P<0.01). A549 cells cultured with MSC‑CM were protected from BLM‑induced apoptosis, 23.43±3.76% vs. 38.06±4.32%; (P<0.05). In the BLM‑challenged rats, MSC‑CM was shown to protect against lung fibrosis in terms of lung inflammation, fibrotic scores, collagen deposition, and cell apoptosis. This data suggests that MSCs are capable of protecting against lung injury and fibrosis both in vitro and in vivo through a paracrine anti‑inflammatory mechanism. MSC‑CM may provide a novel approach for the treatment of lung fibrosis.
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April-2015
Volume 11 Issue 4

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

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Spandidos Publications style
Shen Q, Chen B, Xiao Z, Zhao L, Xu X, Wan X, Jin M, Dai J and Dai H: Paracrine factors from mesenchymal stem cells attenuate epithelial injury and lung fibrosis. Mol Med Rep 11: 2831-2837, 2015
APA
Shen, Q., Chen, B., Xiao, Z., Zhao, L., Xu, X., Wan, X. ... Dai, H. (2015). Paracrine factors from mesenchymal stem cells attenuate epithelial injury and lung fibrosis. Molecular Medicine Reports, 11, 2831-2837. https://doi.org/10.3892/mmr.2014.3092
MLA
Shen, Q., Chen, B., Xiao, Z., Zhao, L., Xu, X., Wan, X., Jin, M., Dai, J., Dai, H."Paracrine factors from mesenchymal stem cells attenuate epithelial injury and lung fibrosis". Molecular Medicine Reports 11.4 (2015): 2831-2837.
Chicago
Shen, Q., Chen, B., Xiao, Z., Zhao, L., Xu, X., Wan, X., Jin, M., Dai, J., Dai, H."Paracrine factors from mesenchymal stem cells attenuate epithelial injury and lung fibrosis". Molecular Medicine Reports 11, no. 4 (2015): 2831-2837. https://doi.org/10.3892/mmr.2014.3092