Characterization of dendritic cells generated from peripheral blood of patients with malignant melanoma.
Dendritic cells (DCs) are professional antigen presenting cells. Two x 10(7) peripheral blood mononuclear cells (PBMCs) from each of 6 melanoma patients and 4 normal donors were incubated in 6-well plates. The adherent cells were cultured in GM-CSF (800 U/ml) and IL-4 (1000 U/ml) for 10 days. Anti-CD80, anti-CD86, anti-HLA-DR, anti-HLA-class I monoclonal antibodies and supernatant from two melanoma cell lines were incubated with DCs before responder T cells were added in mixed lymphocyte reaction (MLR). The mean yields of DCs were 3.6 x 10(5) and 9.3 x 10(5) for donor and the melanoma patients respectively. MLR was inhibited by anti-CD80, anti-CD86, anti-HLA-DR, anti-HLA-Class I and supernatant of melanoma cultures. The characteristics of DCs generated from melanoma patients were comparable to those from donors. DC function was inhibited by soluble factors in melanoma cultures. Further studies are warranted to characterize these inhibitory factors.
Chang
J W
JW
Department of Surgery, University of California, San Francisco/Mount Zion Cancer Center 94115, USA.
Vaquerano
J E
JE
Zhou
Y M
YM
Peng
M
M
Leong
S P
SP
D000911:Antibodies, Monoclonal / Q000494:pharmacology; D017951:Antigen Presentation / Q000187:drug effects; D015703:Antigens, CD / Q000276:immunology; D018122:B7-1 Antigen / Q000276:immunology; D051940:B7-2 Antigen; D001772:Blood Cell Count; D002478:Cells, Cultured; D003713:Dendritic Cells / Q000187:drug effects / Q000473:pathology*; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D006680:HLA Antigens / Q000276:immunology; D006684:HLA-DR Antigens / Q000276:immunology; D006801:Humans; D015847:Interleukin-4 / Q000494:pharmacology; D008213:Lymphocyte Activation; D007959:Lymphocyte Culture Test, Mixed; D008545:Melanoma / Q000097:blood* / Q000276:immunology; D008562:Membrane Glycoproteins / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology
D000911:Antibodies, Monoclonal; D015703:Antigens, CD; D018122:B7-1 Antigen; D051940:B7-2 Antigen; C497964:CD86 protein, human; D006680:HLA Antigens; D006684:HLA-DR Antigens; D008562:Membrane Glycoproteins; D015847:Interleukin-4; D016178:Granulocyte-Macrophage Colony-Stimulating Factor