title: Demonstration that human mast cells arise from a progenitor cell population that is CD34(+), c-kit(+), and expresses aminopeptidase N (CD13).
abstract: Human mast cells are known to arise from a CD34(+)/c-kit(+) progenitor cell population that also gives rise to neutrophils, eosinophils, basophils, and monocytes. To further characterize cells within the CD34(+)/c-kit(+) population that yield mast cells, this progenitor was additionally sorted for CD13, a myeloid marker known to appear early on rodent mast cells and cultured human mast cells, but not expressed or expressed at low levels on human tissue mast cells; and cultured in recombinant human (rh) stem cell factor (rhSCF), rh interleukin-3 (rhIL-3; first week only), and rhIL-6. Initial sorts revealed that although the majority of cells in culture arose from the CD34(+)/c-kit(+)/CD13(-) cell population, mast cells arose from a CD34(+)/c-kit(+)/CD13(+) progenitor cell that also gave rise to a population of monocytes. Sequential sorting confirmed that CD34(+)/c-kit(+)/CD13(+) cells in CD34(+)/c-kit(+)/CD13(-) sorts gave rise to the few mast cells observed in CD13(-) sorted cells. CD34(+)/c-kit(+)/CD13(+) cells plated as single cells in the presence of various cytokine combinations gave rise to pure mast cell, monocyte, or mixed mast cell/monocyte progeny. Addition of either rh granulocyte-macrophage colony-stimulating factor (rhGM-CSF) or rhIL-5 to the CD34(+)/c-kit(+)/CD13(+) progenitor cell population cultured in rhSCF, rhIL-3, and rhIL-6 did increase the number of total cells cultured and in the case of rhIL-5, did increase total mast cell numbers. Neither rhGM-CSF or rhIL-5 led to additional cell populations, ie, even with the addition of rhGM-CSF or rhIL-5, only mast cells and monocytes grew from CD34(+)/c-kit(+)/CD13(+) cells. Thus, human mast cells and a population of monocytes arise from precursor cells that express CD34, c-kit, and CD13; and within which, are mast cell, monocyte, and mast/monocyte (bipotential) precursors.
authors.affiliation: Laboratory of Allergic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA. Akirshenba@atlas.niaid.nih.gov
authors.forename: A S
authors.initials: AS
authors.lastname: Kirshenbaum
authors.forename: J P
authors.initials: JP
authors.lastname: Goff
authors.forename: T
authors.initials: T
authors.lastname: Semere
authors.forename: B
authors.initials: B
authors.lastname: Foster
authors.forename: L M
authors.initials: LM
authors.lastname: Scott
authors.forename: D D
authors.initials: DD
authors.lastname: Metcalfe
mesh_terms: D015703:Antigens, CD / Q000096:biosynthesis; D018952:Antigens, CD34 / Q000096:biosynthesis*; D001854:Bone Marrow Cells / Q000166:cytology; D018826:CD13 Antigens / Q000032:analysis / Q000096:biosynthesis / Q000235:genetics*; D002478:Cells, Cultured; D002999:Clone Cells; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000187:drug effects / Q000502:physiology*; D006636:Histamine Release; D006801:Humans; D018189:Immunomagnetic Separation / Q000379:methods; D007377:Interleukin-3 / Q000494:pharmacology; D015850:Interleukin-6 / Q000494:pharmacology; D008407:Mast Cells / Q000166:cytology* / Q000187:drug effects / Q000502:physiology; D019009:Proto-Oncogene Proteins c-kit / Q000096:biosynthesis*; D011994:Recombinant Proteins / Q000494:pharmacology; D019089:Stem Cell Factor / Q000494:pharmacology
chemical_list: D015703:Antigens, CD; D018952:Antigens, CD34; D007377:Interleukin-3; D015850:Interleukin-6; D011994:Recombinant Proteins; D019089:Stem Cell Factor; D019009:Proto-Oncogene Proteins c-kit; D018826:CD13 Antigens