title: Autologous CD34+ cell transplantation for patients with advanced lymphoma: effects of overnight storage on peripheral blood progenitor cell enrichment and engraftment.
abstract: In order to demonstrate the feasibility of mobilization, enrichment and engraftment of autologous peripheral blood CD34+ cells in patients with relapsed lymphoma, 59 peripheral blood progenitor cell (PBPC) collections from 21 patients were enriched for CD34+ cells using CEPRATE SC (CellPro, Bothell, WA, USA) immunoaffinity column. Following high-dose chemotherapy, a mean of 17 x 10(8) (range, 3-34) nucleated cells/kg containing 8.7 x 10(6) (0.3-26) CD34+ cells/kg were re-infused. Blood cell recovery in these patients was compared to engraftment capacity of unenriched PBPCs in a cohort of lymphoma patients treated with an identical high-dose chemotherapy regimen. Neutrophil and platelet engraftment was rapid in both groups including five patients who received < or = 1 x 10(6) CD34+ cells/kg. After infusion of CD34+ enriched cells, neutrophils exceeded 0.5 x 10(9)/l in 11 (8-14) days and platelets exceeded 20 x 10(9)/l (untransfused) in 15 (9-39) days. In order to optimize the immunoaffinity column utilization we stored the first PBPC collections overnight at 4 degrees C and combined them with the next day's collection prior to the CD34+ enrichment procedure in 11 patients. This maneuver resulted in a significant decrease in the CD34+ cell recovery (resulting in reinfusion of a mean of 42% less CD34+ cells). Although overnight storage did not affect neutrophil engraftment, platelet engraftment was prolonged in this group of patients even when > 2.0 x 10(6) CD34+ cells/kg were re-infused. The overnight storage procedure should be further evaluated for its effects on the CD34+ immunoaffinity enrichment procedure, megakaryocyte progenitors and platelet engraftment. We conclude that CD34+ cells enriched from peripheral blood result in rapid engraftment after high-dose chemotherapy in patients with advanced lymphoma that is comparable to that of patients receiving unenriched PBPCs.
authors.affiliation: Department of Medicine and CWRU Ireland Cancer Center, University Hospitals of Cleveland and CWRU, OH 44106, USA.
authors.forename: O N
authors.initials: ON
authors.lastname: Koç
authors.forename: S L
authors.initials: SL
authors.lastname: Gerson
authors.forename: G L
authors.initials: GL
authors.lastname: Phillips
authors.forename: B W
authors.initials: BW
authors.lastname: Cooper
authors.forename: L
authors.initials: L
authors.lastname: Kutteh
authors.forename: G
authors.initials: G
authors.lastname: Van Zant
authors.forename: D E
authors.initials: DE
authors.lastname: Reece
authors.forename: R M
authors.initials: RM
authors.lastname: Fox
authors.forename: J E
authors.initials: JE
authors.lastname: Schupp
authors.forename: N
authors.initials: N
authors.lastname: Tainer
authors.forename: H M
authors.initials: HM
authors.lastname: Lazarus
mesh_terms: D000328:Adult; D018952:Antigens, CD34 / Q000378:metabolism*; D001793:Blood Preservation; D005260:Female; D006085:Graft Survival; D018380:Hematopoietic Stem Cell Transplantation / Q000379:methods*; D006412:Hematopoietic Stem Cells / Q000276:immunology; D006689:Hodgkin Disease / Q000628:therapy; D006801:Humans; D007937:Leukapheresis; D008223:Lymphoma / Q000628:therapy*; D008228:Lymphoma, Non-Hodgkin / Q000628:therapy; D008297:Male; D008875:Middle Aged; D013997:Time Factors; D014182:Transplantation, Autologous
chemical_list: D018952:Antigens, CD34