International Journal of Cell Cloning, Vol 1, 49-56, Copyright © 1983 by AlphaMed Press

ORIGINAL ARTICLES

In vitro production of CFU-S and cells with erythropoiesis repopulating ability by 5-fluorouracil treated mouse bone marrow

GS Hodgson, TR Bradley and JM Radley

Mouse bone marrow, obtained from donors three days after treatment with 5-fluorouracil, had a very low ability to form macroscopic spleen colonies in irradiated mice at 10 days after transplantation of the cells (CFU-S10); such marrow also had no detectable erythropoiesis repopulating ability but did have near normal marrow repopulating ability and spleen megakaryocyte repopulating ability. Incubation of this marrow in vitro for 7 days with medium containing growth factor preparations (a) pregnant mouse uterus extract plus human spleen conditioned medium or (b) mouse spleen conditioned medium, resulted in marked increases in CFU-S10 and in cells with erythropoietic repopulating ability together with maintenance of cells with marrow repopulating ability. These responses were not observed in cultures with control medium alone. Spleen megakaryocyte repopulating ability was also maintained in the presence of the factor preparations.

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