Isolation of hemopoietic stem cell subsets from murine bone marrow: I. Radioprotective ability of purified cell suspensions differing in the proportion of day-7 and day-12 CFU-S

Journal Article · Fri Jan 01 04:00:00 EST 1988 · Exp. Hematol.; (United States)

OSTI ID:5553766

Ploemacher, R E; Brons, N H

We have studied the ability of bone marrow cell suspensions greatly differing in the relative proportion of day-7 and day-12 spleen colony-forming units (CFU-S) to rescue mice from radiation-inflicted death, and to repopulate the irradiated bone marrow and spleen with nucleated cells. Counterflow centrifugal elutriation in combination with removal of adherent cells and fluorescence-activated cell sorting on differences in wheat germ agglutinin (WGA)-fluorescein isothiocyanate (FITC) affinity and light scatter properties were used consecutively to enrich large numbers of hemopoietic stem cells from mouse bone marrow. Enrichments of 50- to 200-fold have been achieved for day-12 CFU-S and radioprotective ability (RPA), permitting 50% of lethally irradiated mice to survive over a period of 30 days with as few as 50-80 donor cells. The ratio of day-7 and day-12 CFU-S in the various suspensions could be significantly modulated on the basis of their WGA binding and perpendicular light scatter characteristics. This finding enabled us to investigate the properties of day-7 and day-12 CFU-S with respect to their RPA. We found a highly significant log/log relationship between enrichment factors for (1) RPA, (2) the number of day-12 CFU-S, and (3) spleen cellularity as measured on day 13. In addition, similar numbers of sorted and unfractionated day-12 CFU-S were required to obtain the same level of protection. Enrichment for RPA was significantly less related to either the number of day-7 CFU-S injected, or the bone marrow cellularity of the irradiated mice on day 13.

• Research Organization: Erasmus Univ., Rotterdam, The Netherlands
• OSTI ID: 5553766
• Journal Information: Exp. Hematol.; (United States), Journal Name: Exp. Hematol.; (United States) Vol. 16:1; ISSN EXHMA
• Country of Publication: United States
• Language: English

Related Subjects

560152* -- Radiation Effects on Animals-- Animals
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AGGLUTININS
ANIMAL CELLS
ANIMALS
ANTIBODIES
BONE MARROW CELLS
CENTRIFUGATION
COLONY FORMATION
CONNECTIVE TISSUE CELLS
IRRADIATION
LETHAL IRRADIATION
MAMMALS
MICE
RADIATION PROTECTION
RADIOSENSITIVITY EFFECTS
RODENTS
SEPARATION PROCESSES
SOMATIC CELLS
SPLEEN CELLS
STEM CELLS
VERTEBRATES