Abstract
T-lymphocyte migration into tissues requires focal degradation of the basement membrane. In this study, we show that transient adherence to fibronectin induces the production of activated forms of matrix metalloproteinase-2 (MMP-2) and MMP-9, as well as downregulation of tissue inhibitor of metalloproteinase-2 (TIMP-2) by T-cell lines. MMP-2 activation was likely achieved by inducing a coordinated expression of membrane-type matrix metalloproteinase-1 (MMP-14), a major activator of MMP-2. Blocking monoclonal antibodies against alpha4, alpha5, and alphav integrins strongly reduced MMP-2 and MMP-9 production induced by fibronectin. Disrupting actin cytoskeleton organization by cytochalasin D strongly enhanced fibronectin-induced MMP-2 and MMP-9 expression. Inhibiting Src tyrosine kinases with herbimycin A reduced MMP-2 and MMP-9 production with no effect on cell attachment. By contrast, G-protein inhibition by pertussis toxin, or transfection with a dominant negative mutant of Ha-Ras strongly increased fibronectin-induced MMP-2 and MMP-9. Inhibition of PI3 kinase, MAPkinase (MEK1), or p38 MAPkinase by wortmannin, PD 98059, or SB 202190, respectively, strongly promoted fibronectin-induced MMP2 and MMP-9. Cells at high density lost their ability to synthesize MMP-2 and MMP-9 in response to fibronectin and MMP expression was restored by transfection with a dominant-negative mutant of Ha-Ras or by treatment with wortmannin, PD 98059, or SB 202190. Our findings suggest that adhesion to fibronectin transduces both stimulatory (through Src-type tyrosin kinases) and inhibitory signals (through Ras/MAPKinase signaling pathways) for MMP-2 and MMP-9 expression by T lymphocytes and that their relative predominance is regulated by additional stimuli related to cell adhesion, motility, and growth.
Publication types
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Comparative Study
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Research Support, Non-U.S. Gov't
MeSH terms
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Androstadienes / pharmacology
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Antibodies, Monoclonal / pharmacology
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Benzoquinones
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Cell Adhesion / drug effects
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Enzyme Activation / drug effects
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Enzyme Inhibitors / pharmacology
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Fibronectins / pharmacology*
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Flavonoids / pharmacology
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GTP-Binding Proteins / antagonists & inhibitors
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Gene Expression Regulation / drug effects*
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Gene Expression Regulation, Neoplastic / drug effects
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Genes, ras
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Humans
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Imidazoles / pharmacology
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Integrins / antagonists & inhibitors
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Integrins / immunology
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Jurkat Cells / drug effects
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Jurkat Cells / metabolism
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Lactams, Macrocyclic
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MAP Kinase Signaling System*
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Matrix Metalloproteinase 2 / biosynthesis*
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Matrix Metalloproteinase 2 / genetics
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Matrix Metalloproteinase Inhibitors*
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Matrix Metalloproteinases / biosynthesis*
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Matrix Metalloproteinases / genetics
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Matrix Metalloproteinases, Membrane-Associated
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Metalloendopeptidases*
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Neoplasm Proteins / biosynthesis
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Neoplasm Proteins / genetics
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Neoplasm Proteins / physiology
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Peptide Fragments / pharmacology
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Pertussis Toxin
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Phosphoinositide-3 Kinase Inhibitors
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Protein Structure, Tertiary
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Proto-Oncogene Proteins p21(ras) / antagonists & inhibitors
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Proto-Oncogene Proteins p21(ras) / physiology*
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Pyridines / pharmacology
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Quinones / pharmacology
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Rifabutin / analogs & derivatives
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T-Lymphocytes / drug effects*
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T-Lymphocytes / metabolism
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Tissue Inhibitor of Metalloproteinase-1 / biosynthesis
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Tissue Inhibitor of Metalloproteinase-1 / genetics
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Tissue Inhibitor of Metalloproteinase-2 / biosynthesis
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Tissue Inhibitor of Metalloproteinase-2 / genetics
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Transfection
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Tumor Cells, Cultured
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Virulence Factors, Bordetella / pharmacology
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Wortmannin
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src-Family Kinases / antagonists & inhibitors
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src-Family Kinases / physiology
Substances
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Androstadienes
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Antibodies, Monoclonal
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Benzoquinones
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Enzyme Inhibitors
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Fibronectins
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Flavonoids
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Imidazoles
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Integrins
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Lactams, Macrocyclic
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Matrix Metalloproteinase Inhibitors
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Neoplasm Proteins
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Peptide Fragments
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Phosphoinositide-3 Kinase Inhibitors
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Pyridines
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Quinones
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Tissue Inhibitor of Metalloproteinase-1
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Virulence Factors, Bordetella
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Tissue Inhibitor of Metalloproteinase-2
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Rifabutin
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herbimycin
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Pertussis Toxin
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src-Family Kinases
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Matrix Metalloproteinases
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Matrix Metalloproteinases, Membrane-Associated
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Metalloendopeptidases
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Matrix Metalloproteinase 2
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GTP-Binding Proteins
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HRAS protein, human
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Proto-Oncogene Proteins p21(ras)
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4-(4-fluorophenyl)-2-(4-hydroxyphenyl)-5-(4-pyridyl)imidazole
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2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one
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Wortmannin