Differential effects of bacterial lipopolysaccharide and interferon-gamma on proliferation of two factor-dependent macrophage cell lines.
We examined the responsiveness of two factor-dependent macrophage cell lines, BDM-1 and its subclone, BDM-1W3, to bacterial lipopolysaccharide (LPS), interferon-gamma (IFN-gamma), and tumor necrosis factor-alpha (TNF-alpha) for their growth. LPS inhibited the M-CSF-dependent proliferation of BDM-1 cells but it had no effect on the proliferation of BDM-1W3 cells. LPS promoted DNA synthesis and supported the cell viability in the absence of CSFs in BDM-1 and BDM-1W3 cells, suggesting that the intracellular signals are transduced from the interaction of LPS with LPS-binding sites in BDM-1W3 cells as well as in BDM-1 cells. IFN-gamma inhibited the proliferation of BDM-1 and BDM-1W3 cells. However, BDM-1 cells were more susceptible to the inhibitory effect of IFN-gamma than BDM-1W3 cells. In contrast to LPS and IFN-gamma, TNF-alpha did not inhibit the proliferation of BDM-1 and BDM-1W3 cells. These cell lines should be useful for studying the regulatory mechanisms in CSF-dependent macrophage proliferation.
Ohki
K
K
Department of Microbiology, Saga Medical School, Japan.
Nagayama
A
A
Kohashi
O
O
D000818:Animals; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D002470:Cell Survival / Q000502:physiology; D004247:DNA / Q000096:biosynthesis; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000502:physiology; D007371:Interferon-gamma / Q000494:pharmacology*; D008070:Lipopolysaccharides / Q000502:physiology*; D016173:Macrophage Colony-Stimulating Factor / Q000502:physiology; D008264:Macrophages / Q000187:drug effects*; D051379:Mice; D008809:Mice, Inbred C3H; D014409:Tumor Necrosis Factor-alpha / Q000502:physiology
D008070:Lipopolysaccharides; D014409:Tumor Necrosis Factor-alpha; D016173:Macrophage Colony-Stimulating Factor; D007371:Interferon-gamma; D016178:Granulocyte-Macrophage Colony-Stimulating Factor; D004247:DNA