title: Mesenchymal stem cells derived from CD133-positive cells in mobilized peripheral blood and cord blood: proliferation, Oct4 expression, and plasticity.
abstract: In this study, we used a common procedure to assess the potential of mobilized peripheral blood (MPB) and umbilical cord blood (UCB) as sources of mesenchymal stem cells (MSCs) in comparison with bone marrow (BM). We tested three methods: plastic adhesion supplemented with 5% of BM-MSC conditioned medium, unsupplemented plastic adhesion, and selection of CD133-positive cells. MSCs derived from MPB or UCB are identified by their positive expression of mesenchymal (SH2, SH3) and negative expression of hematopoietic markers (CD14, CD34, CD45, HLA-DR). We observed that the CD133-positive cell fraction contains more MSCs with high proliferative potential. Placed in appropriate conditions, these cells proved their capacity to differentiate into adipocytes, osteocytes, chondrocytes, and neuronal/glial cells. MPB- and UCB-MSCs express Oct4, a transcriptional binding factor present in undifferentiated cells with high proliferative capacity. The selection of CD133-positive cells enabled us to obtain a homogeneous population of MSCs from UCB and MPB. These sources may have a major clinical importance thanks to their easy accessibility.
authors.affiliation: Jules Bordet Institute, 121 Bd de Waterloo, 1000 Brussels, Belgium. tatiana.tondreau@bordet.be.
authors.forename: Tatiana
authors.initials: T
authors.lastname: Tondreau
authors.forename: Nathalie
authors.initials: N
authors.lastname: Meuleman
authors.forename: Alain
authors.initials: A
authors.lastname: Delforge
authors.forename: Marielle
authors.initials: M
authors.lastname: Dejeneffe
authors.forename: Rita
authors.initials: R
authors.lastname: Leroy
authors.forename: Martine
authors.initials: M
authors.lastname: Massy
authors.forename: Christine
authors.initials: C
authors.lastname: Mortier
authors.forename: Dominique
authors.initials: D
authors.lastname: Bron
authors.forename: Laurence
authors.initials: L
authors.lastname: Lagneaux
mesh_terms: D000071916:AC133 Antigen; D017667:Adipocytes / Q000166:cytology; D015703:Antigens, CD / Q000032:analysis; D015415:Biomarkers / Q000032:analysis; D001773:Blood Cells / Q000166:cytology* / Q000378:metabolism; D001854:Bone Marrow Cells / Q000166:cytology / Q000378:metabolism; D002454:Cell Differentiation; D019070:Cell Lineage; D049109:Cell Proliferation; D002469:Cell Separation; D002478:Cells, Cultured; D003114:Colony-Forming Units Assay; D005312:Fetal Blood / Q000166:cytology*; D005434:Flow Cytometry; D006023:Glycoproteins / Q000032:analysis; D006801:Humans; D059630:Mesenchymal Stem Cells / Q000166:cytology* / Q000378:metabolism; D009474:Neurons / Q000166:cytology; D050814:Octamer Transcription Factor-3 / Q000378:metabolism; D010011:Osteocytes / Q000166:cytology; D010455:Peptides / Q000032:analysis; D012333:RNA, Messenger / Q000378:metabolism
chemical_list: D000071916:AC133 Antigen; D015703:Antigens, CD; D015415:Biomarkers; D006023:Glycoproteins; D050814:Octamer Transcription Factor-3; C494173:POU5F1 protein, human; C000606023:PROM1 protein, human; D010455:Peptides; D012333:RNA, Messenger