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Transforming growth factor-β1 suppresses the up-regulation of matrix metalloproteinase-2 by lung fibroblasts in response to tumor necrosis factor-α
| Content Provider | Scilit |
|---|---|
| Author | Ye, Hong Cai, Peng-Cheng Zhou, Qiong Ma, Wan-Li |
| Copyright Year | 2011 |
| Description | Journal: Wound Repair and Regeneration Exposed to inflammatory factors or cytokines, fibroblasts appear to play additional roles beyond the deposition of extracellular matrix. It has been reported that tumor necrosis factor-α (TNF-α) induces the production of matrix metalloproteinase-2 (MMP-2) and transforming growth factor-β1 (TGF-β1) in fibroblasts. In this study, we demonstrated that the active MMP-2 secreted by lung fibroblasts reached the peak level at 12 hours after TNF-α treatment, whereas, by adding anti-TGF-β1 antibody in the culture medium, the MMP-2 production in response to TNF-α was maintained at high levels after 24 hours of treatment. We also confirmed that TNF-α induced up-regulation of active TGF-β1 and exogenous TGF-β1 induced down-regulation of MMP-2 synthesis in lung fibroblasts. Moreover, an increased MMP-2 level was observed in a rat model with pulmonary inflammation and fibrosis induced by bleomycin-A5. This revealed that MMP-2 in the lung reached the peak level when TNF-α reached the peak level at the 7th day, and then MMP-2 decreased along with an increase in the TGF-β1 level. Taken together, our results demonstrate that TNF-α induced an increase of MMP-2 and TGF-β1 in lung fibroblasts, and the TGF-β1 attenuated the up-regulation of MMP-2. This suggests that MMP-2 secreted from fibroblasts modulated by TNF-α/TGF-β1 might play an important role in pulmonary inflammation and fibrosis. |
| Related Links | https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1524-475X.2011.00680.x |
| Ending Page | 399 |
| Page Count | 8 |
| Starting Page | 392 |
| e-ISSN | 1524475X |
| DOI | 10.1111/j.1524-475x.2011.00680.x |
| Journal | Wound Repair and Regeneration |
| Issue Number | 3 |
| Volume Number | 19 |
| Language | English |
| Publisher | Wiley-Blackwell |
| Publisher Date | 2011-04-21 |
| Access Restriction | Open |
| Subject Keyword | Journal: Wound Repair and Regeneration Biotechnology and Microbiology Tgf Β1 Pulmonary Inflammation |
| Content Type | Text |
| Resource Type | Article |
