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, 11 (2), 145-52

Receptor Insertion Into Factor-Dependent Murine Cell Lines to Develop Specific Bioassays for Murine G-CSF and M-CSF and Human GM-CSF

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Receptor Insertion Into Factor-Dependent Murine Cell Lines to Develop Specific Bioassays for Murine G-CSF and M-CSF and Human GM-CSF

D Metcalf et al. Growth Factors.

Abstract

cDNAs encoding the receptors for murine G-CSF, M-CSF or human GM-CSF were inserted into the murine hemopoietic continuous cell lines Ba/F3 or FDC-P1 and sublines selected that were then responsive to proliferative stimulation by these growth factors. When used in microwell assays the Ba/F3 G-CSF receptor-expressing cell line was able to detect 100 pg G-CSF per ml, the Ba/F3 M-CSF receptor-expressing cell line 100-400 pg M-CSF per ml and the FDC-P1 line expressing the alpha- and beta-chains of the human GM-CSF receptor detected 5-10 pg/ml of GM-CSF in test material. These cell lines appear satisfactory for use as selective bioassays for these colony stimulating factors in material potentially containing a mixture of growth factors.

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