PMID- 26075533 OWN - NLM STAT- MEDLINE DCOM- 20160908 LR - 20151201 IS - 1607-8438 (Electronic) IS - 0300-8207 (Linking) VI - 56 IP - 6 DP - 2015 Nov TI - TGF-beta1 antagonizes TNF-alpha induced up-regulation of matrix metalloproteinase 3 in nucleus pulposus cells: role of the ERK1/2 pathway. PG - 461-8 LID - 10.3109/03008207.2015.1054030 [doi] AB - Tumor necrosis factor-alpha (TNF-alpha) 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-beta1 (TGF-beta1) has an anabolic effect on nucleus pulposus (NP) cells. However, the anti-catabolic effect of TGF-beta1 under inflammatory condition is unknown. The aim of this study was to demonstrate whether TGF-beta1 can reverse TNF-alpha-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-alpha increased MMP3 expression in rat NP cells time and dose dependently. TGF-beta1 could abolish TNF-alpha-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-beta1. Treatment with ERK1/2 inhibitors (PD98059 and U0126) abolished the antagonistic effect of TGF-beta1 on TNF-alpha mediated catabolic responses. These findings provide novel evidence supporting the anti-catabolic role of TGF-beta1 in IVDD, which is important for the potential clinical application of TGF-beta1 in disc degenerative disorders. FAU - Yang, Hao AU - Yang H AD - a Department of Spine Surgery , Beijing Jishuitan Hospital, Peking University , Xinjiekou Dongjie , Beijing , China . AD - b Department of Spine Surgery , The First Affiliated Hospital of Sun Yat-sen University , Guangzhou , China . FAU - Gao, Fei AU - Gao F AD - c Department of Orthopaedic Surgery , Union Hospital, Tongji Medical College, Huazhong University of Science and Technology , Wuhan , China , and. FAU - Li, Xiang AU - Li X AD - d Department of Orthopaedics , The First People's Hospital of Taizhou , Taizhou , China. FAU - Wang, Jianru AU - Wang J AD - b Department of Spine Surgery , The First Affiliated Hospital of Sun Yat-sen University , Guangzhou , China . FAU - Liu, Hui AU - Liu H AD - b Department of Spine Surgery , The First Affiliated Hospital of Sun Yat-sen University , Guangzhou , China . FAU - Zheng, Zhaomin AU - Zheng Z AD - b Department of Spine Surgery , The First Affiliated Hospital of Sun Yat-sen University , Guangzhou , China . LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150729 PL - England TA - Connect Tissue Res JT - Connective tissue research JID - 0365263 RN - 0 (Tgfb1 protein, rat) RN - 0 (Transforming Growth Factor beta1) RN - 0 (Tumor Necrosis Factor-alpha) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) SB - IM MH - Animals MH - Cells, Cultured MH - *Gene Expression Regulation, Enzymologic MH - Intervertebral Disc Degeneration/*metabolism/pathology MH - Lumbar Vertebrae/*metabolism MH - *MAP Kinase Signaling System MH - Matrix Metalloproteinase 3/*biosynthesis MH - Mitogen-Activated Protein Kinase 3/*metabolism MH - Rats MH - Rats, Wistar MH - Transforming Growth Factor beta1/*metabolism/pharmacology MH - Tumor Necrosis Factor-alpha/*metabolism/pharmacology MH - *Up-Regulation OTO - NOTNLM OT - ERK1/2 signaling pathway OT - intervertebral disc degeneration OT - matrix metalloproteinases OT - transforming growth factor-beta1 OT - tumor necrosis factor-alpha EDAT- 2015/06/16 06:00 MHDA- 2016/09/09 06:00 CRDT- 2015/06/16 06:00 PHST- 2015/06/16 06:00 [entrez] PHST- 2015/06/16 06:00 [pubmed] PHST- 2016/09/09 06:00 [medline] AID - 10.3109/03008207.2015.1054030 [doi] PST - ppublish SO - Connect Tissue Res. 2015 Nov;56(6):461-8. doi: 10.3109/03008207.2015.1054030. Epub 2015 Jul 29.