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Near-optimal Conditions for the In Vitro Culture of Hemopoietic Progenitor Cells in Bone Marrow from the Rat
1 Division of Cellular and Molecular Medicine, Section for Cellular and Molecular Pathology, St Georges, University of London, United Kingdom Correspondence: Dr. G. Molyneux, Breakthrough Breast Cancer Centre, Institute of Cancer Research, 237 Fulham Road, London SW3 6JB, UK; e-mail:gemma.molyneux{at}icr.ac.uk. In vitro techniques for the culture of hemopoietic stem cells and committed hemopoietic progenitor cells in rat bone marrow have not been adequately described in the literature. In the present investigations, and using commercially available hemopoietic cytokines and growth factors, the conditions required to perform long-term bone marrow culture (LTBMC) using rat femoral bone marrow were studied, in conjunction with the colony-forming unit cell assay (CFU-C), to quantify the number of progenitor cells. CFU-C production by LTBMCs, set up using Iscoves modified Dulbeccos medium supplemented with fetal calf serum and horse serum, ceased after week 2 of culture. However, the duration of CFU-C production was significantly increased by supplementing LTBMCs with the cytokine recombinant mouse stem cell factor or recombinant rat stem cell factor.
Key Words: long-term bone marrow culture rat hemopoietic progenitor cells colony-forming unit cell assay mouse stem cell factor in vitro culture Abbreviations: BFU-E, burst-forming unit erythroid BM, bone marrow CFU-C, colony-forming unit cell CFU-GEM, colony-forming units granulocyte–macrophage and erythroid elements CFU-GM, colony-forming units granulocyte–macrophage FCS, fetal calf serum HS, horse serum IMDM, Iscoves modified Dulbeccos medium LTBMC, long-term bone marrow culture rhEpo, recombinant human erythropoietin rhG-CSF, recombinant human granulocyte colony–stimulating factor rhIL-6, recombinant human interleukin 6 rmIL-3, recombinant mouse interleukin 3 rmSCF, recombinant mouse stem cell factor rrSCF, recombinant rat stem cell factor SCF, stem cell factor
Toxicologic Pathology, Vol. 37, No. 2,
170-174 (2009) |
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