Human endometrial endothelial cells: isolation, characterization, and inflammatory-mediated expression of tissue factor and type 1 plasminogen activator inhibitor.
Binding of Ulex europaeus lectin to microvessels was used to isolate endothelial cells from cycling human endometrium. Cultured human endometrial endothelial cells (HEECs) exhibited endothelial cell-specific characteristics such as tube formation on a basement membrane matrix and sequestration of acetylated low-density lipoprotein. Markers for potentially contaminating epithelial, stromal, smooth muscle, and bone marrow-derived cells were not detected in the HEEC cultures. Basal and proinflammatory-stimulated immunostaining profiles for endothelial cell-specific adhesion markers, as exemplified by Von Willebrand's factor and E-selectin, were similar for cultured HEECs and human umbilical venous cord endothelial cells (HUVECs). However, HUVECs expressed several extracellular matrix proteins that were absent from cultured HEECs. In the latter, the protein kinase C agonist phorbol myristate acetate transiently enhanced tissue factor (TF) mRNA levels and elicited a more prolonged elevation in TF protein levels, but did not affect plasminogen activator inhibitor-1 (PAI-1) mRNA and protein levels. Inappropriate expression of TF, which initiates hemostasis by generating thrombin, and of PAI-1, which regulates hemostasis by acting as the primary inhibitor of fibrinolysis, can each lead to thrombosis. The differential regulation of TF and PAI-1 expression revealed in the current study emphasizes the importance of using HEECs to evaluate mechanisms regulating the hemostatic/thrombotic balance in human endometrium.
Schatz
F
F
Department of Obstetrics and Gynecology and Department of Pediatrics, New York University School of Medicine, New York, NY 10016, USA.
Soderland
C
C
Hendricks-Muñoz
K D
KD
Gerrets
R P
RP
Lockwood
C J
CJ
D015415:Biomarkers; D002478:Cells, Cultured; D019040:E-Selectin / Q000378:metabolism; D004716:Endometritis / Q000235:genetics / Q000378:metabolism; D004717:Endometrium / Q000166:cytology* / Q000187:drug effects / Q000378:metabolism*; D004727:Endothelium / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D004730:Endothelium, Vascular / Q000166:cytology / Q000187:drug effects / Q000378:metabolism; D016326:Extracellular Matrix Proteins / Q000378:metabolism; D005260:Female; D005786:Gene Expression Regulation; D006801:Humans; D018799:Intercellular Adhesion Molecule-1 / Q000378:metabolism; D037102:Lectins / Q000378:metabolism; D037121:Plant Lectins; D017395:Plasminogen Activator Inhibitor 1 / Q000235:genetics / Q000378:metabolism*; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D013925:Thromboplastin / Q000235:genetics / Q000378:metabolism*; D014841:von Willebrand Factor / Q000378:metabolism
D015415:Biomarkers; D019040:E-Selectin; D016326:Extracellular Matrix Proteins; D037102:Lectins; D037121:Plant Lectins; D017395:Plasminogen Activator Inhibitor 1; C036850:Ulex europaeus lectins; D014841:von Willebrand Factor; D018799:Intercellular Adhesion Molecule-1; D013925:Thromboplastin; D013755:Tetradecanoylphorbol Acetate