Summary
Bone marrow cells of normal and cytosine-arabinoside (Ara-C) treated C57Bl mice were cultured in primary long-term culture (LTBMC) for a period of eight weeks. Non-adherent cells collected at weekly culture feedings consisted of neutrophils, macrophages and megakaryocytes. These were transferred into a) secondary peritoneal diffusion chamber cultures (DC) and b) secondary stromal cell cultures (SCC) first, and then into tertiary DC cultures. While in LTBMC and SCC there was no evidence of erythropoiesis, many erythroid colonies developed in DC cultures. It appears that undifferentiated erythroid progenitors may have a long survival in LTBMC and SCC devoid of erythropoietin and then differentiate in vivo in DC cultures in host mice without specific erythropoietic stimuli. Terminal differentiation and maturation of erythroid progenitors occurs to a limited extent in conventional DC cultures. The large number of erythroid colonies in DC observed in the present study could be due to increased sensitivity of undifferentiated erythroid progenitors from LTBMC to physiological levels of Epo in host mice of DC.
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Ben-Ishay, Z., Prindull, G. Long-term survival of murine erythroid progenitors in long-term bone marrow culture and stromal cell culture: differentiation in peritoneal diffusion chamber culture. Blut 58, 295–298 (1989). https://doi.org/10.1007/BF00320170
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DOI: https://doi.org/10.1007/BF00320170