title: Synergism of biochemical and mechanical stimuli in the differentiation of human placenta-derived multipotent cells into endothelial cells.
abstract: There have been intensive studies on the differentiation of endothelial progenitor cells (EPCs) into endothelial cells. We investigated the endothelial differentiation of placenta-derived multipotent cells (PDMCs), a population of CD34(-)/CD133(-)/Flk-1(-) cells. PDMCs were cultured in basal media or media containing endothelial growth factors (EGM), including vascular endothelial growth factor (VEGF), for 3 days and then subjected to shear stress of 6 or 12dyn/cm(2) for 24h. Culture of PDMCs in EGM under static conditions resulted in significant increases in VEGF receptor-1 (Flt-1) and receptor-2 (Flk-1) expression. Application of shear stress at 12dyn/cm(2) to these cells led to significant increases in their expression of von Willebrand Factor and platelet-endothelial cell adhesion molecule-1 at both the gene and protein levels. Shear stress at 6dyn/cm(2) had lesser effects. Uptakes of acetylated low-density lipoproteins as well as formation of tube-like structures on Matrigel were significantly increased after subjecting to shear stress of 12dyn/cm(2) for 24h. Our findings suggest that the combined use of endothelial growth factors and high shear stress is synergistic for the endothelial differentiation of PDMCs.
authors.affiliation: Cardiovascular and Blood Research Center, National Health Research Institutes, Miaoli, Taiwan, Republic of China.
authors.forename: Chia-Ching
authors.initials: CC
authors.lastname: Wu
authors.forename: You-Chen
authors.initials: YC
authors.lastname: Chao
authors.forename: Cheng-Nan
authors.initials: CN
authors.lastname: Chen
authors.forename: Shu
authors.initials: S
authors.lastname: Chien
authors.forename: Yao-Chang
authors.initials: YC
authors.lastname: Chen
authors.forename: Chih-Chung
authors.initials: CC
authors.lastname: Chien
authors.forename: Jeng-Jiann
authors.initials: JJ
authors.lastname: Chiu
authors.forename: B
authors.initials: B
authors.lastname: Linju Yen
mesh_terms: D001696:Biomechanical Phenomena; D002448:Cell Adhesion / Q000502:physiology; D002454:Cell Differentiation / Q000502:physiology*; D019070:Cell Lineage / Q000235:genetics; D002478:Cells, Cultured; D017077:Culture Media, Conditioned / Q000494:pharmacology; D042783:Endothelial Cells / Q000166:cytology* / Q000502:physiology; D005260:Female; D006801:Humans; D039902:Multipotent Stem Cells / Q000166:cytology* / Q000502:physiology; D010920:Placenta / Q000166:cytology* / Q000502:physiology; D019408:Platelet Endothelial Cell Adhesion Molecule-1 / Q000096:biosynthesis / Q000502:physiology; D011247:Pregnancy; D033081:Shear Strength; D042461:Vascular Endothelial Growth Factor A / Q000096:biosynthesis / Q000502:physiology; D040281:Vascular Endothelial Growth Factor Receptor-1 / Q000096:biosynthesis / Q000502:physiology; D040301:Vascular Endothelial Growth Factor Receptor-2 / Q000096:biosynthesis / Q000502:physiology; D014841:von Willebrand Factor / Q000096:biosynthesis / Q000502:physiology
chemical_list: D017077:Culture Media, Conditioned; D019408:Platelet Endothelial Cell Adhesion Molecule-1; C467484:VEGFA protein, human; D042461:Vascular Endothelial Growth Factor A; D014841:von Willebrand Factor; C501162:FLT1 protein, human; D040281:Vascular Endothelial Growth Factor Receptor-1; D040301:Vascular Endothelial Growth Factor Receptor-2