PMID- 12608905 OWN - NLM STAT- MEDLINE DCOM- 20030610 LR - 20190906 IS - 0022-3484 (Print) IS - 0022-3484 (Linking) VI - 38 IP - 2 DP - 2003 Apr TI - Basic fibroblast growth factor induces the expression of matrix metalloproteinase-3 in human periodontal ligament cells through the MEK2 mitogen-activated protein kinase pathway. PG - 122-9 AB - Basic fibroblast growth factor (bFGF, FGF-2) is one of the potent mitogens for periodontal ligament (PDL) cells. However, the role of bFGF on the matrix metalloproteinase-3 (MMP-3) expression in PDL cells is unknown. In this study, the effect of bFGF on MMP-3 expression in PDL cells and the mechanism of this process were examined. Human PDL cells were exposed to bFGF at various concentrations (0.01-10 ng/ml) in monolayer cultures. bFGF increased [3H]thymidine incorporation and suppressed proteoglycan synthesis concentration-dependently. However, similar concentration ranges of bFGF increased the release of the cell-associated proteoglycans into the medium. Furthermore, bFGF increased MMP-3 mRNA levels concentration-dependently as examined by reverse transcription-polymerase chain reaction (RT-PCR). Induction of MMP-3 after the stimulation with bFGF was observed as early as 12 h with maximal at 24 h. Thereafter, the MMP-3 mRNA level gradually decreased until 72 h. Cycloheximide blocked the induction of MMP-3 by bFGF, indicating the requirement of de novo protein synthesis for this stimulation. Furthermore, MMP-3 expression induced by bFGF was abrogated by U0126, a specific inhibitor of MEK1/2 and ERK1/2 in mitogen-activated protein (MAP) kinase pathway, not by PD98059, a specific inhibitor of MEK1. In addition, bFGF up-regulated the phosphorylated ERK1/2 in 5 min with the maximal at 20 min as examined by Western blotting, and U0126 inhibited the ERK1/2 phosphorylation induced by bFGF. These findings suggest that bFGF induces MMP-3 expression in PDL cells through the activation of the MEK2 in MAP kinase pathway. bFGF stimulation on MMP-3 synthesis may be involved in the control of the cell-associated proteoglycans in PDL cells during periodontal regeneration and degradation. FAU - Shimazu, Atsushi AU - Shimazu A AD - Department of Preventive Dentistry, Faculty of Dentistry, Hiroshima University, Hiroshima, Japan. atsushi@hiroshima-u.ac.jp FAU - Morishita, Masayuki AU - Morishita M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Periodontal Res JT - Journal of periodontal research JID - 0055107 RN - 0 (Butadienes) RN - 0 (Enzyme Inhibitors) RN - 0 (Flavonoids) RN - 0 (Nitriles) RN - 0 (Protein Synthesis Inhibitors) RN - 0 (Proteoglycans) RN - 0 (RNA, Messenger) RN - 0 (U 0126) RN - 103107-01-3 (Fibroblast Growth Factor 2) RN - 98600C0908 (Cycloheximide) RN - EC 2.7.1.- (MAP2K2 protein, human) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinases) RN - EC 2.7.12.2 (MAP Kinase Kinase 2) RN - EC 2.7.12.2 (Mitogen-Activated Protein Kinase Kinases) RN - EC 3.4.24.17 (Matrix Metalloproteinase 3) RN - SJE1IO5E3I (2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one) RN - VC2W18DGKR (Thymidine) SB - IM MH - Analysis of Variance MH - Butadienes/pharmacology MH - Calcium-Calmodulin-Dependent Protein Kinases/antagonists & inhibitors MH - Cell Culture Techniques MH - Cycloheximide/pharmacology MH - Dose-Response Relationship, Drug MH - Enzyme Inhibitors/pharmacology MH - Fibroblast Growth Factor 2/administration & dosage/*pharmacology MH - Flavonoids/pharmacology MH - Gene Expression Regulation, Enzymologic/drug effects MH - Humans MH - MAP Kinase Kinase 2 MH - Matrix Metalloproteinase 3/*drug effects/genetics MH - Mitogen-Activated Protein Kinase Kinases/antagonists & inhibitors/*pharmacology MH - Nitriles/pharmacology MH - Periodontal Ligament/*enzymology MH - Protein Synthesis Inhibitors/pharmacology MH - Protein-Tyrosine Kinases/antagonists & inhibitors/*pharmacology MH - Proteoglycans/antagonists & inhibitors/metabolism MH - RNA, Messenger/genetics MH - Thymidine/metabolism MH - Time Factors MH - Up-Regulation EDAT- 2003/03/01 04:00 MHDA- 2003/06/11 05:00 CRDT- 2003/03/01 04:00 PHST- 2003/03/01 04:00 [pubmed] PHST- 2003/06/11 05:00 [medline] PHST- 2003/03/01 04:00 [entrez] AID - 1o645 [pii] AID - 10.1034/j.1600-0765.2003.01645.x [doi] PST - ppublish SO - J Periodontal Res. 2003 Apr;38(2):122-9. doi: 10.1034/j.1600-0765.2003.01645.x.