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- W1889208109 abstract "Tumor necrosis factor-α (TNF-α) has been shown to have a catabolic effect on intervertebral disc degeneration (IVDD), including increasing MMP3 expression and subsequent extracellular matrix (ECM) degradation. In contrast, transforming growth factor-β1 (TGF-β1) has an anabolic effect on nucleus pulposus (NP) cells. However, the anti-catabolic effect of TGF-β1 under inflammatory condition is unknown. The aim of this study was to demonstrate whether TGF-β1 can reverse TNF-α-induced MMP3 increase in NP cells and to further investigate the underlying mechanisms. The transcriptional activity, gene expression, and protein levels of MMP3 were measured by luciferase reporter assay, qRT-PCR and western blot, respectively. TNF-α increased MMP3 expression in rat NP cells time and dose dependently. TGF-β1 could abolish TNF-α-mediated up-regulation of collagen I and MMP3 expression, and down-regulate aggrecan and collagen II expression. The ERK1/2 signaling pathway was activated after exposure to TGF-β1. Treatment with ERK1/2 inhibitors (PD98059 and U0126) abolished the antagonistic effect of TGF-β1 on TNF-α mediated catabolic responses. These findings provide novel evidence supporting the anti-catabolic role of TGF-β1 in IVDD, which is important for the potential clinical application of TGF-β1 in disc degenerative disorders." @default.
- W1889208109 created "2016-06-24" @default.
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- W1889208109 date "2015-07-29" @default.
- W1889208109 modified "2023-10-12" @default.
- W1889208109 title "TGF-<b>β</b>1 antagonizes TNF-<b>α</b>induced up-regulation of matrix metalloproteinase 3 in nucleus pulposus cells: role of the ERK1/2 pathway" @default.
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- W1889208109 doi "https://doi.org/10.3109/03008207.2015.1054030" @default.
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