Opposite effects of bFGF and TGF-beta on collagen metabolism by human periodontal ligament fibroblasts. 2007

Karina Gonzales Silverio-Ruiz, and Aurora Esmeralda Traverso Martinez, and Gustavo Pompermaier Garlet, and Carolina Fregonesi Barbosa, and Joao Santana Silva, and Regina Maria Barreto Cicarelli, and Sandro Roberto Valentini, and Ricardo Samih Georges Abi-Rached, and Carlos Rossa Junior
Department of Diagnosis and Surgery, School of Dentistry at Araraquara, São Paulo State University-UNESP, Rua Humaitá, 1680, Centro, Araraquara, SP, CEP 14801-903, Brazil.

This study evaluated the effects of bFGF and TGF-beta, individually and combined, on cell proliferation and collagen metabolism. Primary human periodontal ligament cells were stimulated with two concentrations (1 and 10 ng/ml) of each growth factor, both individually and combined. Proliferation was determined by a commercial biochemical assay. Real time RT-PCR determined gene expression of MMP-1 and -2, collagen types I and III, TIMP-1, -2 and -3. Autocrine effects on synthesis of bFGF and TGF-beta were evaluated by ELISA. Only TGF-beta, either isolated or associated with bFGF, significantly increased cell proliferation. TGF-beta had anabolic effects, increasing expression of type I and III collagen as well as of TIMPs, whereas bFGF had opposite effects. When bFGF and TGF-beta were associated, the anabolic effects prevailed. Synthesis of TGF-beta was induced only by the association of lower concentrations of the growth factors, whereas there was a dose-dependent production of bFGF. It is concluded that bFGF had a predominantly catabolic effect, and TGF-beta exerted an anabolic effect on hPDL cells.

UI MeSH Term Description Entries
D010513 Periodontal Ligament The fibrous CONNECTIVE TISSUE surrounding the TOOTH ROOT, separating it from and attaching it to the alveolar bone (ALVEOLAR PROCESS). Alveolodental Ligament,Alveolodental Membrane,Gomphosis,Alveolodental Ligaments,Alveolodental Membranes,Gomphoses,Ligament, Alveolodental,Ligament, Periodontal,Membrane, Alveolodental,Periodontal Ligaments
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D005347 Fibroblasts Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules. Fibroblast
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D016212 Transforming Growth Factor beta A factor synthesized in a wide variety of tissues. It acts synergistically with TGF-alpha in inducing phenotypic transformation and can also act as a negative autocrine growth factor. TGF-beta has a potential role in embryonal development, cellular differentiation, hormone secretion, and immune function. TGF-beta is found mostly as homodimer forms of separate gene products TGF-beta1, TGF-beta2 or TGF-beta3. Heterodimers composed of TGF-beta1 and 2 (TGF-beta1.2) or of TGF-beta2 and 3 (TGF-beta2.3) have been isolated. The TGF-beta proteins are synthesized as precursor proteins. Bone-Derived Transforming Growth Factor,Platelet Transforming Growth Factor,TGF-beta,Milk Growth Factor,TGFbeta,Bone Derived Transforming Growth Factor,Factor, Milk Growth,Growth Factor, Milk
D016222 Fibroblast Growth Factor 2 A single-chain polypeptide growth factor that plays a significant role in the process of WOUND HEALING and is a potent inducer of PHYSIOLOGIC ANGIOGENESIS. Several different forms of the human protein exist ranging from 18-24 kDa in size due to the use of alternative start sites within the fgf-2 gene. It has a 55 percent amino acid residue identity to FIBROBLAST GROWTH FACTOR 1 and has potent heparin-binding activity. The growth factor is an extremely potent inducer of DNA synthesis in a variety of cell types from mesoderm and neuroectoderm lineages. It was originally named basic fibroblast growth factor based upon its chemical properties and to distinguish it from acidic fibroblast growth factor (FIBROBLAST GROWTH FACTOR 1). Basic Fibroblast Growth Factor,Fibroblast Growth Factor, Basic,HBGF-2,Cartilage-Derived Growth Factor,Class II Heparin-Binding Growth Factor,FGF-2,FGF2,Fibroblast Growth Factor-2,Heparin-Binding Growth Factor Class II,Prostate Epithelial Cell Growth Factor,Prostatropin,Cartilage Derived Growth Factor,FGF 2
D049109 Cell Proliferation All of the processes involved in increasing CELL NUMBER including CELL DIVISION. Cell Growth in Number,Cellular Proliferation,Cell Multiplication,Cell Number Growth,Growth, Cell Number,Multiplication, Cell,Number Growth, Cell,Proliferation, Cell,Proliferation, Cellular
D019714 Tissue Inhibitor of Metalloproteinases A family of secreted protease inhibitory proteins that regulates the activity of SECRETED MATRIX METALLOENDOPEPTIDASES. They play an important role in modulating the proteolysis of EXTRACELLULAR MATRIX, most notably during tissue remodeling and inflammatory processes. Tissue Inhibitor of Metalloproteinase,TIMP Proteins,Metalloproteinase Tissue Inhibitor,Metalloproteinases Tissue Inhibitor,Proteins, TIMP
D020778 Matrix Metalloproteinase 2 A secreted endopeptidase homologous with INTERSTITIAL COLLAGENASE, but which possesses an additional fibronectin-like domain. Gelatinase A,72-kDa Gelatinase,72-kDa Type IV Collagenase,MMP-2 Metalloproteinase,MMP2 Metalloproteinase,Matrix Metalloproteinase-2,72 kDa Gelatinase,72 kDa Type IV Collagenase,Gelatinase, 72-kDa,MMP 2 Metalloproteinase,Metalloproteinase 2, Matrix,Metalloproteinase, MMP-2,Metalloproteinase, MMP2
D020781 Matrix Metalloproteinase 1 A member of the metalloproteinase family of enzymes that is principally responsible for cleaving FIBRILLAR COLLAGEN. It can degrade interstitial collagens, types I, II and III. Interstitial Collagenase,MMP-1 Metalloproteinase,MMP1 Metalloproteinase,Matrix Metalloproteinase-1,Pro-Matrix Metalloproteinase-1,Promatrixmetalloproteinase-1,proMMP-1,MMP 1 Metalloproteinase,Metalloproteinase 1, Matrix,Metalloproteinase, MMP-1,Metalloproteinase, MMP1,Metalloproteinase-1, Pro-Matrix,Pro Matrix Metalloproteinase 1,Promatrixmetalloproteinase 1

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