title: 5-Hydroxytryptamine as a potent migration enhancer of human aortic endothelial cells.
abstract: The purpose of the present study was to investigate whether 5-hydroxytryptamine (5-HT, serotonin) affects migration of vascular endothelial cells. 5-HT significantly enhanced migration of human aortic endothelial cells (HAECs), and this enhancement was completely inhibited by GR 55562, a 5-HT1 receptor antagonist, and fluoxetine, a 5-HT transporter inhibitor, but was not affected by ketanserin, a 5-HT2 receptor antagonist. 5-HT stimulation increased RhoA and ERK activity of HAECs, and inhibitors of RhoA (Y-27632 and H-1152) and inhibitors of MEK (U0126 and PD98059) abolished the 5-HT-induced increase in migration velocity. Inhibition of Rho kinase by Y-27632 blocked stress fiber formation and rear release of HAECs. Thus, 5-HT has a potent enhancing action on migration of HAECs through activating the RhoA and ERK pathways following 5-HT1 receptor stimulation.
authors.affiliation: Department of Hygiene and Preventive Medicine, Yamagata University School of Medicine, Iida-Nishi 2-2-2, Yamagata 990-9585, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Matsusaka
authors.forename: Ichiro
authors.initials: I
authors.lastname: Wakabayashi
mesh_terms: D019307:1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine / Q000031:analogs & derivatives / Q000494:pharmacology; D000577:Amides / Q000494:pharmacology; D001011:Aorta / Q000166:cytology*; D001549:Benzamides / Q000494:pharmacology; D002070:Butadienes / Q000494:pharmacology; D017871:Calcium-Calmodulin-Dependent Protein Kinases / Q000037:antagonists & inhibitors; D002465:Cell Movement / Q000187:drug effects* / Q000502:physiology; D002478:Cells, Cultured; D042783:Endothelial Cells / Q000187:drug effects* / Q000502:physiology; D004789:Enzyme Activation / Q000187:drug effects; D004791:Enzyme Inhibitors / Q000494:pharmacology; D005419:Flavonoids / Q000494:pharmacology; D005473:Fluoxetine / Q000494:pharmacology; D006801:Humans; D018715:Microscopy, Video; D019950:Mitogen-Activated Protein Kinase 1 / Q000378:metabolism; D048052:Mitogen-Activated Protein Kinase 3 / Q000378:metabolism; D009570:Nitriles / Q000494:pharmacology; D011725:Pyridines / Q000494:pharmacology; D012701:Serotonin / Q000494:pharmacology*; D018490:Serotonin Agents / Q000494:pharmacology*; D012702:Serotonin Antagonists / Q000494:pharmacology; D017367:Selective Serotonin Reuptake Inhibitors / Q000494:pharmacology; D022502:Stress Fibers / Q000187:drug effects; D013997:Time Factors; D020742:rhoA GTP-Binding Protein / Q000037:antagonists & inhibitors / Q000378:metabolism
chemical_list: D019307:1-(5-Isoquinolinesulfonyl)-2-Methylpiperazine; D000577:Amides; D001549:Benzamides; D002070:Butadienes; D017871:Calcium-Calmodulin-Dependent Protein Kinases; D004791:Enzyme Inhibitors; D005419:Flavonoids; D005473:Fluoxetine; D019950:Mitogen-Activated Protein Kinase 1; D048052:Mitogen-Activated Protein Kinase 3; D009570:Nitriles; D011725:Pyridines; D012701:Serotonin; D018490:Serotonin Agents; D012702:Serotonin Antagonists; D017367:Selective Serotonin Reuptake Inhibitors; D020742:rhoA GTP-Binding Protein; C459092:2-methyl-1-((4-methyl-5-isoquinolinyl)sulfonyl)homopiperazine; C113580:U 0126; C108830:Y 27632; C103477:3-(3-(dimethylamino)propyl)-4-hydroxy-N-(4-(4-pyridinyl)phenyl)benzamide; C093973:2-(2-amino-3-methoxyphenyl)-4H-1-benzopyran-4-one