In vitro activity on myeloid progenitors of a combination of 2-chloro-2'-deoxyadenosine and interferon alpha : The effects of IL-1 and GM-CSF
1996
Abstract The toxic effects of a combination of 2-chloro-2′-deoxyadenosine (CDA) and interferon alpha (IFN-α), with and without addition of interleukin 1 (IL-1) and/or granulocyte macrophage colony stimulating factor (GM-CSF), on the in vitro growth of peripheral blood granulocyte macrophage committed progenitors (CFU-GM) from 10 normal subjects were investigated. CDA concentration ranged from 15.6 nmol/l to 1 μmol/I, IFN-α sole concentration was 10 IU/ml. IL-1 and/or GM-CSF were added at concentrations of 2000 pg/ml and 10 ng/ml, respectively. CDA induced a dose dependent inhibitory effect on CFU-GM growth. Addition of IFN-α increased CFU-GM inhibition induced by CDA only at lower concentrations of the latter. IL-1 and GM-CSF, separately or in combination, did not counteract the inhibitory activity of the CDA-IFN-α combination.
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