title: Biology of CD34+CD38- cells in lymphohematopoiesis.
abstract: Since the discovery of the CD34 stem/progenitor cell antigen, considerable progress has been made in further purifying human lymphohematopoietic stem cells (HSC). These studies have identified a number of antigens which can be targeted to subfractionate the CD34+ cell population. In particular, several lines of evidence suggest that the rare CD38(-)subpopulation of CD34+ cells may be enriched in HSC. This review briefly summarizes relevant knowledge concerning the CD38 molecule and the results of in vitro and in vivo studies of CD34+38(-)cells. Possible clinical uses for purified CD34+38(-)cells are outlined.
authors.affiliation: Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA. novelenm @ welchlink.welch.jhu.edu
authors.forename: E M
authors.initials: EM
authors.lastname: Novelli
authors.forename: M
authors.initials: M
authors.lastname: Ramirez
authors.forename: C I
authors.initials: CI
authors.lastname: Civin
mesh_terms: D036541:ADP-ribosyl Cyclase; D051997:ADP-ribosyl Cyclase 1; D015703:Antigens, CD; D018952:Antigens, CD34 / Q000502:physiology*; D000943:Antigens, Differentiation / Q000502:physiology*; D006410:Hematopoiesis / Q000502:physiology*; D006412:Hematopoietic Stem Cells / Q000276:immunology*; D006801:Humans; D008562:Membrane Glycoproteins; D009244:NAD+ Nucleosidase / Q000502:physiology*
chemical_list: D015703:Antigens, CD; D018952:Antigens, CD34; D000943:Antigens, Differentiation; D008562:Membrane Glycoproteins; D036541:ADP-ribosyl Cyclase; C498154:CD38 protein, human; D009244:NAD+ Nucleosidase; D051997:ADP-ribosyl Cyclase 1