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miR-29 Inhibits Bleomycin-induced Pulmonary Fibrosis in Mice

Open access
Xiao, Jun, Meng, Xiao-Ming, Huang, Xiao R, Chung, Arthur CK, Feng, Yu-Lin, Hui, David SC, Yu, Cheuk-Man, Sung, Joseph JY, Lan, Hui Y·2012·Molecular Therapy

Abstract

Loss of microRNA-29 (miR-29) is known to be a mechanism of transforming growth factor-β (TGF-β)-mediated pulmonary fibrosis, but the therapeutic implication of miR-29 for pulmonary fibrosis remains unexplored. The present study investigated whether miR-29 had therapeutic potential for lung disease induced by bleomycin in mice. In addition, the signaling mechanisms that regulated miR-29 expression were investigated in vivo and in vitro. We found that miR-29 was a downstream target gene of Smad3 and negatively regulated by TGF-β/Smad signaling in fibrosis. This was evidenced by the findings that mice or pulmonary fibroblasts null for Smad3 were protected against bleomycin or TGF-β1-induced loss of miR-29 along with fibrosis in vivo and in vitro. Interestingly, overexpression of miR-29 could in turn negatively regulated TGF-β and connective tissue growth factor (CTGF) expression and Smad3 signaling. Therefore, Sleeping Beauty (SB)-mediated miR-29 gene transfer into normal and diseased lung tissues was capable of preventing and treating pulmonary fibrosis including inflammatory macrophage infiltration induced by bleomycin in mice. In conclusion, miR-29 is negatively regulated by TGF-β/Smad3 and has a therapeutic potential for pulmonary fibrosis. SB-mediated miR-29 gene therapy is a non-invasive therapeutic strategy for lung disease associated with fibrosis.

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Metadata

Authors
Xiao, J., Meng, X.-M., Huang, X. R., Chung, A. C., Feng, Y.-L., Hui, D. S., Yu, C.-M., Sung, J. J., & Lan, H. Y.
Venue
Molecular Therapy
Publisher
Elsevier BV
Published
2012-06
Volume
20
Issue
6
Pages
1251-1260
ISSN
1525-0016 (ISSN-L)
OpenAlex
W2087158191
Cited by
293
References
5
FWCI
22.29
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: miR-29 Inhibits Bleomycin-induced Pulmonary Fibrosis in Mice. https://app.cochat.ai/papers/10.1038/mt.2012.36
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Xiao, J., Meng, X.-M., Huang, X. R., Chung, A. C., Feng, Y.-L., Hui, D. S., Yu, C.-M., Sung, J. J., & Lan, H. Y. (2012). miR-29 Inhibits Bleomycin-induced Pulmonary Fibrosis in Mice. Molecular Therapy. https://doi.org/10.1038/mt.2012.36

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