title: CD133+ cell selection is an alternative to CD34+ cell selection for ex vivo expansion of hematopoietic stem cells.
abstract: CD133 is a new stem cell antigen that may provide an alternative to CD34 for the selection and expansion of hematopoietic cells for transplantation. This study compared the expansion capacities of CD133(+) and CD34(+) cells isolated from the same cord blood (CB) samples. After 14 days culture in stroma-free, serum-free medium in the presence of stem cell factor (SCF), Flt3-1, megakaryocyte growth and development factor (MGDF), and granulocyte colony-stimulating factor (G-CSF), the CD133(+) and CD34(+) fractions displayed comparable expansion of the myeloid compartment (CFC, LTC-IC, and E-LTC-IC). The expansion of CD133(+) CB cells was up to 1262-fold for total cells, 99-fold for CD34(+) cells, 109-fold for CD34(+) CD133(+) cells, 133-fold for CFU-GM, 14.5-fold for LTC-IC, and 7.5-fold for E-LTC-IC. Moreover, the expanded population was able to generate lymphoid B (CD19(+)), NK (CD56(+)), and T (CD4(+) CD8(+)) cells in liquid or fetal thymic organ cultures, while expression of the homing antigen CXCR4 was similar on expanded and nonexpanded CD133(+) or CD34(+) cells. Thus, the CD133(+) subset could be expanded in the same manner as the CD34(+) subset and conserved its multilineage capacity, which would support the relevance of CD133 for clinical hematopoietic selection.
authors.affiliation: INSERM U 417, Hôpital Saint-Antoine, Paris, France.
authors.forename: L
authors.initials: L
authors.lastname: Kobari
authors.forename: M C
authors.initials: MC
authors.lastname: Giarratana
authors.forename: F
authors.initials: F
authors.lastname: Pflumio
authors.forename: B
authors.initials: B
authors.lastname: Izac
authors.forename: L
authors.initials: L
authors.lastname: Coulombel
authors.forename: L
authors.initials: L
authors.lastname: Douay
mesh_terms: D000071916:AC133 Antigen; D015703:Antigens, CD; D018952:Antigens, CD34 / Q000032:analysis*; D000954:Antigens, Surface / Q000032:analysis*; D001402:B-Lymphocytes / Q000166:cytology / Q000276:immunology; D018929:Cell Culture Techniques / Q000379:methods; D002454:Cell Differentiation / Q000187:drug effects / Q000502:physiology*; D002455:Cell Division; D002478:Cells, Cultured; D016895:Culture Media, Serum-Free; D005312:Fetal Blood / Q000166:cytology*; D005434:Flow Cytometry; D006023:Glycoproteins / Q000032:analysis*; D016179:Granulocyte Colony-Stimulating Factor / Q000494:pharmacology; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000187:drug effects / Q000276:immunology; D006801:Humans; D018189:Immunomagnetic Separation / Q000379:methods; D007231:Infant, Newborn; D007694:Killer Cells, Natural / Q000166:cytology / Q000276:immunology; D009924:Organ Culture Techniques; D010455:Peptides / Q000032:analysis*; D011518:Proto-Oncogene Proteins / Q000494:pharmacology; D020794:Receptor Protein-Tyrosine Kinases / Q000494:pharmacology; D011994:Recombinant Proteins / Q000494:pharmacology; D019089:Stem Cell Factor / Q000494:pharmacology; D013601:T-Lymphocytes / Q000166:cytology / Q000276:immunology; D013926:Thrombopoietin / Q000494:pharmacology; D013950:Thymus Gland / Q000196:embryology / Q000276:immunology; D051941:fms-Like Tyrosine Kinase 3
chemical_list: D000071916:AC133 Antigen; D015703:Antigens, CD; D018952:Antigens, CD34; D000954:Antigens, Surface; D016895:Culture Media, Serum-Free; D006023:Glycoproteins; C000606023:PROM1 protein, human; D010455:Peptides; D011518:Proto-Oncogene Proteins; D011994:Recombinant Proteins; D019089:Stem Cell Factor; D016179:Granulocyte Colony-Stimulating Factor; D013926:Thrombopoietin; C497970:FLT3 protein, human; D020794:Receptor Protein-Tyrosine Kinases; D051941:fms-Like Tyrosine Kinase 3