title: [Effect of ginsenosides on proliferation and differentiation of human CD34+ hematopoietic stem/progenitor cells].
abstract: OBJECTIVE
  To investigate the effect of ginsenosides (GS) on proliferation and differentiation of human CD34+ stem/progenitor cells.
  
  
  METHODS
  CD34+ hematopoietic progenitor cells were isolated from umbilical cord blood by using the immune beads sorting system. The cells were exposed to GS of different concentrations in both liquid culture and semi-solid culture, and the elevation rate on proliferation of CD34+ stem/progenitor cells and colony formation were estimated. The cells were marked with monoclonal antibody and the marker was examined by flow cytometry after incubated with GS for 14 days.
  
  
  RESULTS
  GS (5-50 micrograms/ml) could raise the colony production rate of BFU-E, CFU-E, CFU-GM, CFU-GEMM by (87.6 +/- 2.6)%, (63.3 +/- 2.8)%, (58.0 +/- 3.1)% and (96.3 +/- 5.5)% respectively (all P < 0.01), and the best effect in improving cell proliferation of CD34+ cells in vitro was obtained when the concentration of GS was 25 micrograms/ml. After incubation with GS for 14 days, number of CD33+ cells was increased by GS in a dose-dependent manner with a peak increasing rate at 200 micrograms/ml. In the presence of GS 50 micrograms/ml, CD15+ cells were reaching the peak. Number of CD71+ and G-A+ cells increased only when the concentration of GS was 25 micrograms/ml.
  
  
  CONCLUSIONS
  GS could not only promote the proliferation but also induce the differentiation of CD34+ hematopoietic stem/progenitor cells, GS may play the role by cooperating with hematopoietic growth factor, and by its growth factor-like function in the regulation of hematopoiesis.
authors.affiliation: Affiliated Hospital of Zhejiang College of TCM, Hangzhou (310006).
authors.forename: J
authors.initials: J
authors.lastname: Jin
authors.forename: H
authors.initials: H
authors.lastname: Tao
authors.forename: R
authors.initials: R
authors.lastname: Gao
mesh_terms: D018952:Antigens, CD34 / Q000378:metabolism*; D002454:Cell Differentiation / Q000187:drug effects; D002455:Cell Division / Q000187:drug effects; D002478:Cells, Cultured; D005312:Fetal Blood / Q000166:cytology; D036145:Ginsenosides; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000187:drug effects*; D006801:Humans; D005894:Panax; D012503:Saponins / Q000494:pharmacology*
chemical_list: D018952:Antigens, CD34; D036145:Ginsenosides; D012503:Saponins