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The actin binding domain of the epidermal growth factor receptor is required for EGF-stimulated tissue invasion. 1997

M A van der Heyden, and P M Van Bergen en Henegouwen, and N de Ruiter, and M A Verdaasdonk, and J G van den Tweel, and G Rijksen, and J Boonstra, and P Joling
Department of Molecular Cell Biology, Utrecht University, The Netherlands. m_heyden@hubrecht.nl

NIH-3T3 fibroblasts expressing epidermal growth factor receptors (EGFRs) lacking the actin binding domain (ABD) were analyzed for their EGF-induced capacity to invade a bone marrow stromal cell (BMSC) monolayer. The fibroblasts display a reduction in the percentage of cytoskeleton-associated EGFRs. Furthermore, EGF-induced tyrosine kinase activity is unaffected by the mutation. Cells expressing the mutant EGFRs hardly invade a BMSC monolayer upon EGF stimulation in contrast to cells expressing wild-type EGFRs. Using the same cells no difference was observed in PDGF-induced invasion, which ligand was as potent in both cell types as EGF was in wild-type cells. Inhibition of both the phosphatidyl inositol-3-kinase (PI-3-K) and lipoxygenase pathways in wild-type cells mimicked the effect of the ABD deletion. Our results point to an important role for the ABD of the EGFR in EGF-induced tissue invasion.

UI MeSH Term Description Entries
D009361 Neoplasm Invasiveness Ability of neoplasms to infiltrate and actively destroy surrounding tissue. Invasiveness, Neoplasm,Neoplasm Invasion,Invasion, Neoplasm
D009637 Masoprocol A potent lipoxygenase inhibitor that interferes with arachidonic acid metabolism. The compound also inhibits formyltetrahydrofolate synthetase, carboxylesterase, and cyclooxygenase to a lesser extent. It also serves as an antioxidant in fats and oils. Nordihydroguaiaretic Acid,(R*,S*)-4,4'-(2,3-Dimethylbutane-1,4-diyl)bispyrocatechol,Actinex,Dihydronorguaiaretic Acid,Nordihydroguaiaretic Acid, (R*,S*)-Isomer,meso-Nordihydroguaiaretic Acid,Acid, meso-Nordihydroguaiaretic,meso Nordihydroguaiaretic Acid
D010982 Platelet-Derived Growth Factor Mitogenic peptide growth hormone carried in the alpha-granules of platelets. It is released when platelets adhere to traumatized tissues. Connective tissue cells near the traumatized region respond by initiating the process of replication. Platelet Derived Growth Factor,Factor, Platelet-Derived Growth,Growth Factor, Platelet-Derived
D011505 Protein-Tyrosine Kinases Protein kinases that catalyze the PHOSPHORYLATION of TYROSINE residues in proteins with ATP or other nucleotides as phosphate donors. Tyrosine Protein Kinase,Tyrosine-Specific Protein Kinase,Protein-Tyrosine Kinase,Tyrosine Kinase,Tyrosine Protein Kinases,Tyrosine-Specific Protein Kinases,Tyrosylprotein Kinase,Kinase, Protein-Tyrosine,Kinase, Tyrosine,Kinase, Tyrosine Protein,Kinase, Tyrosine-Specific Protein,Kinase, Tyrosylprotein,Kinases, Protein-Tyrosine,Kinases, Tyrosine Protein,Kinases, Tyrosine-Specific Protein,Protein Kinase, Tyrosine-Specific,Protein Kinases, Tyrosine,Protein Kinases, Tyrosine-Specific,Protein Tyrosine Kinase,Protein Tyrosine Kinases,Tyrosine Specific Protein Kinase,Tyrosine Specific Protein Kinases
D001854 Bone Marrow Cells Cells contained in the bone marrow including fat cells (see ADIPOCYTES); STROMAL CELLS; MEGAKARYOCYTES; and the immediate precursors of most blood cells. Bone Marrow Cell,Cell, Bone Marrow,Cells, Bone Marrow,Marrow Cell, Bone,Marrow Cells, Bone
D002448 Cell Adhesion Adherence of cells to surfaces or to other cells. Adhesion, Cell,Adhesions, Cell,Cell Adhesions
D002465 Cell Movement The movement of cells from one location to another. Distinguish from CYTOKINESIS which is the process of dividing the CYTOPLASM of a cell. Cell Migration,Locomotion, Cell,Migration, Cell,Motility, Cell,Movement, Cell,Cell Locomotion,Cell Motility,Cell Movements,Movements, Cell
D002478 Cells, Cultured Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others. Cultured Cells,Cell, Cultured,Cultured Cell
D003599 Cytoskeleton The network of filaments, tubules, and interconnecting filamentous bridges which give shape, structure, and organization to the cytoplasm. Cytoplasmic Filaments,Cytoskeletal Filaments,Microtrabecular Lattice,Cytoplasmic Filament,Cytoskeletal Filament,Cytoskeletons,Filament, Cytoplasmic,Filament, Cytoskeletal,Filaments, Cytoplasmic,Filaments, Cytoskeletal,Lattice, Microtrabecular,Lattices, Microtrabecular,Microtrabecular Lattices
D004791 Enzyme Inhibitors Compounds or agents that combine with an enzyme in such a manner as to prevent the normal substrate-enzyme combination and the catalytic reaction. Enzyme Inhibitor,Inhibitor, Enzyme,Inhibitors, Enzyme

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