title: Characterization of peripheral blood steady-state progenitor cells preserved in liquid culture conditions with or without GM-CSF and IL2.
abstract: The cellular characteristics of steady-state peripheral blood progenitor cell (PBPC) apheresis, including total number of lymphomononuclear cells, CD34 and CFUs, was evaluated in a group of 26 chemo-radiotherapy patients as well as in a group of 23 surgically resected cancer patients. Three-to seven-day incubation in standard liquid culture conditions with growth factors (IL2, GM-CSF or both) correlated with a statistically significant increase in CD34+ and CD56+ cell populations compared with incubation without growth factors, especially when both GM-CSF and IL2 were used. In addition, an increase in CD33+, CD13+ and HLA-DR+ cell populations was observed after 3-7 days incubation with GM-CSF. The basal culture control exhibited a decrease in CD33+ and CD13+ cell populations while CD34+ and CD56+ cell populations were maintained. These results were similar in the treated and untreated groups of patients. The infusion of GM-CSF and IL2 preincubated PBPC after intensive chemotherapy was associated with a rapid hematological recovery with a median time duration for WBC < 500/uL, WBC < 1.000/uL and platelets < 20.000/uL of 7.9 days, 14.9 days and 10.7 days respectively. We conclude that a short GM-CSF and IL2 preincubation of steady-state PBPC is associated with an increase in cell populations exhibiting the immune and progenitor cell phenotypes and correlates with an early hematological recovery after intensive chemotherapy.
authors.affiliation: Department of Oncology, Facultad de Medicina, Universidad de Navarra, Pamplona, Spain.
authors.forename: D
authors.initials: D
authors.lastname: Sawadogo
authors.forename: M J
authors.initials: MJ
authors.lastname: Martínez
authors.forename: J
authors.initials: J
authors.lastname: Merino
authors.forename: M L
authors.initials: ML
authors.lastname: Subirá
authors.forename: A
authors.initials: A
authors.lastname: Brugarolas
mesh_terms: D000328:Adult; D000368:Aged; D018952:Antigens, CD34 / Q000032:analysis; D001793:Blood Preservation / Q000379:methods*; D019002:CD56 Antigen / Q000032:analysis; D002478:Cells, Cultured; D003131:Combined Modality Therapy; D003470:Culture Media / Q000494:pharmacology*; D004357:Drug Synergism; D005260:Female; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology*; D018380:Hematopoietic Stem Cell Transplantation; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000187:drug effects; D006801:Humans; D016219:Immunotherapy, Adoptive; D007376:Interleukin-2 / Q000494:pharmacology*; D007937:Leukapheresis; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000097:blood / Q000628:therapy; D010976:Platelet Count; D016896:Treatment Outcome
chemical_list: D018952:Antigens, CD34; D019002:CD56 Antigen; D003470:Culture Media; D007376:Interleukin-2; D016178:Granulocyte-Macrophage Colony-Stimulating Factor