Dendritic cells differentiated from human monocytes through a combination of IL-4, GM-CSF and IFN-gamma exhibit phenotype and function of blood dendritic cells.
Our previous studies demonstrated that monocytes, when cultured under certain conditions, are able to differentiate into DC-like cells (MoDC) presenting a high accessory activity and low phagocytic function. In the present study, we demonstrate that under the effect of a triple combination of IL-4, IFN-gamma and GM-CSF human blood monocytes are able to differentiate into the cells expressing an identical phenotype and functional features of blood dendritic cells. MoDC stimulated T cell proliferation 20-30 times higher than untreated monocytes, similar to blood DC. They expressed abundant HLA-DR molecules, but only trace amounts of the monocyte/macrophage markers CD16 (FcR III), CD32 (FcR II), and CD14. Phagocytosis of Ig- and complement-opsonized bacteria was reduced by 93%.
Xu
H
H
Dept. of Immunology, Cleveland Clinic Foundation, OH 44195, USA.
Krämer
M
M
Spengler
H P
HP
Peters
J H
JH
D002454:Cell Differentiation / Q000187:drug effects; D003713:Dendritic Cells / Q000166:cytology* / Q000187:drug effects* / Q000276:immunology; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000008:administration & dosage*; D006684:HLA-DR Antigens / Q000378:metabolism; D006801:Humans; D066298:In Vitro Techniques; D007371:Interferon-gamma / Q000008:administration & dosage*; D015847:Interleukin-4 / Q000008:administration & dosage*; D018950:Lipopolysaccharide Receptors / Q000378:metabolism; D008213:Lymphocyte Activation; D007959:Lymphocyte Culture Test, Mixed; D009000:Monocytes / Q000166:cytology* / Q000187:drug effects* / Q000276:immunology; D010587:Phagocytosis / Q000187:drug effects; D010641:Phenotype; D017452:Receptors, IgG / Q000378:metabolism; D013601:T-Lymphocytes / Q000276:immunology
D006684:HLA-DR Antigens; D018950:Lipopolysaccharide Receptors; D017452:Receptors, IgG; D015847:Interleukin-4; D007371:Interferon-gamma; D016178:Granulocyte-Macrophage Colony-Stimulating Factor