title: Mouse flt-1 promoter directs endothelial-specific expression in the embyroid body model of embryogenesis.
abstract: The endothelial-specific receptor tyrosine kinase flt-1 (VEGFR-1) is expressed early on during endothelial lineage commitment both in vivo and in vitro. However, the exact function of flt-1 in vascular development still remains unclear. Here we report that a 2.2-kb fragment 5' of the mouse flt-1 gene becomes transcriptionally active during endothelial cell differentiation in developing embryoid bodies derived from mouse ES cells. Reporter gene expression correlated well with PECAM-1 expression and mirrored the expression pattern of the endogenous flt-1 gene. The temporal and spatial activity of the 2.2-kb flt-1 promoter provides a means to (1) identify a living population of early committed endothelial/bipotential progenitors and (2) ectopically express biologically active genes during lineage commitment.
authors.affiliation: Genetics Division, National Cancer Centre Research Institute, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.
authors.forename: G
authors.initials: G
authors.lastname: Quinn
authors.forename: T
authors.initials: T
authors.lastname: Ochiya
authors.forename: M
authors.initials: M
authors.lastname: Terada
authors.forename: T
authors.initials: T
authors.lastname: Yoshida
mesh_terms: D017398:Alternative Splicing / Q000235:genetics; D000818:Animals; D015415:Biomarkers / Q000032:analysis; D002454:Cell Differentiation; D002455:Cell Division; D019070:Cell Lineage; D003001:Cloning, Molecular; D004622:Embryo, Mammalian / Q000166:cytology / Q000378:metabolism*; D004727:Endothelium / Q000166:cytology / Q000378:metabolism*; D005434:Flow Cytometry; D018507:Gene Expression Regulation, Developmental; D020868:Gene Silencing; D005799:Genes, Dominant / Q000235:genetics; D017930:Genes, Reporter / Q000235:genetics; D016678:Genome; D051379:Mice; D008969:Molecular Sequence Data; D009154:Mutation / Q000235:genetics; D009928:Organ Specificity; D019408:Platelet Endothelial Cell Adhesion Molecule-1 / Q000032:analysis; D011401:Promoter Regions, Genetic / Q000235:genetics*; D011518:Proto-Oncogene Proteins / Q000235:genetics*; D020794:Receptor Protein-Tyrosine Kinases / Q000235:genetics*; D011973:Receptors, LDL / Q000378:metabolism; D011995:Recombination, Genetic; D015398:Signal Transduction; D013234:Stem Cells / Q000166:cytology / Q000378:metabolism; D014162:Transfection; D014407:Tumor Cells, Cultured; D040281:Vascular Endothelial Growth Factor Receptor-1
chemical_list: D015415:Biomarkers; D019408:Platelet Endothelial Cell Adhesion Molecule-1; D011518:Proto-Oncogene Proteins; D011973:Receptors, LDL; D020794:Receptor Protein-Tyrosine Kinases; D040281:Vascular Endothelial Growth Factor Receptor-1