title: CD133 positive progenitor endothelial cell lines from human cord blood.
abstract: Endothelial progenitor cells (EPCs) modulate postnatal vascularization and contribute to vessel regeneration in adults. Stem cells and progenitor cells were found in umbilical cord blood, bone marrow, and mobilized peripheral blood cells, from where they were isolated and cultured. However, the yield of progenitor cells is usually not sufficient for clinical application and the quality of progenitor cells varies. The aim of the study was the immortalization of early progenitor cells with high proliferative potential, capable to differentiate to EPCs and, further, toward endothelial cells. Two cell lines, namely HEPC-CB.1 and HEPC-CB.2 (human endothelial progenitor cells-cord blood) were isolated. As assessed by specific antibody labeling and flow cytometric analysis, they express a panel of stem cell markers: CD133, CD13, CD271, CD90 and also endothelial cell markers: CD202b, CD309 (VEGFR2), CD146, CD105, and CD143 but they do not present markers of finally differentiated endothelial cells: CD31, vWf, nor CD45 which is a specific hematopoietic cell marker. Using the multiplex Cytometric Bead Assay, the simultaneous production of proangiogenic cytokines IL8, angiogenin, and VEGF was demonstrated in normoxia and was shown to be increased by hypoxia. Both cell lines, similarly as mature endothelial cells, underwent in vitro pre-angiogenic process, formed pseudovessel structures and present an accelerated angiogenesis in hypoxic conditions. To date, these are the first CD133 positive established cell lines from human cord blood cells.
authors.affiliation: Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, PAN, 53114 Wrocław, Poland.
authors.forename: Maria
authors.initials: M
authors.lastname: Paprocka
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Krawczenko
authors.forename: Danuta
authors.initials: D
authors.lastname: Dus
authors.forename: Aneta
authors.initials: A
authors.lastname: Kantor
authors.forename: Aude
authors.initials: A
authors.lastname: Carreau
authors.forename: Catherine
authors.initials: C
authors.lastname: Grillon
authors.forename: Claudine
authors.initials: C
authors.lastname: Kieda
mesh_terms: D000071916:AC133 Antigen; D015703:Antigens, CD / Q000378:metabolism*; D015415:Biomarkers / Q000378:metabolism; D002460:Cell Line; D049109:Cell Proliferation; D002469:Cell Separation; D042783:Endothelial Cells / Q000166:cytology; D005312:Fetal Blood / Q000166:cytology*; D006023:Glycoproteins / Q000378:metabolism*; D006801:Humans; D007963:Leukocytes, Mononuclear / Q000166:cytology; D018919:Neovascularization, Physiologic; D010455:Peptides / Q000378:metabolism*; D013234:Stem Cells / Q000166:cytology*
chemical_list: D000071916:AC133 Antigen; D015703:Antigens, CD; D015415:Biomarkers; D006023:Glycoproteins; C000606023:PROM1 protein, human; D010455:Peptides