Human peripheral blood monocyte-derived interleukin-10-induced semi-mature dendritic cells induce anergic CD4(+) and CD8(+) T cells via presentation of the internalized soluble antigen and cross-presentation of the phagocytosed necrotic cellular fragments.
We examined the ability of human monocyte-derived interleukin (IL)-10-induced semi-mature dendritic cells (semi-mDCs) that had been pulsed with soluble protein and necrotic cellular fragments to induce an antigen (Ag)-specific anergy in CD4(+) and CD8(+) T cells. IL-10 converted normal immature DCs (iDCs) into semi-mDCs during the maturation. In contrast to normal iDCs and mature DCs, IL-10-induced semi-mDCs as well as IL-10-treated iDCs not only had reduced their allogeneic T cell-stimulatory capacity, but also induced an allogeneic Ag-specific anergy in T cells. Normal mDCs that had been pulsed with tetanus toxin (TT) or allogeneic necrotic cellular fragments caused further activation of TT-specific CD4(+) T cells or allogeneic fibroblast-specific CD8(+) T cells, Ag-pulsed IL-10-induced semi-mDCs induced an anergic state in both cell types. Thus, our results suggest that IL-10-induced semi-mDCs induce an Ag-specific anergy in CD4(+) and CD8(+) T cells via presentation of the internalized protein and cross-presentation of the phagocytosed cellular fragments.
Department of Immunology and Medical Zoology, School of Medicine, Kagoshima University, Kagoshima City, Japan. katsuaki@m3.kufm.kagoshima-u.ac.jp
Katsuaki
K
Sato
Naohide
N
Yamashita
Takami
T
Matsuyama
D017951:Antigen Presentation / Q000276:immunology*; D000941:Antigens / Q000276:immunology* / Q000378:metabolism; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology* / Q000378:metabolism; D018414:CD8-Positive T-Lymphocytes / Q000276:immunology* / Q000378:metabolism; D002454:Cell Differentiation / Q000276:immunology; D002478:Cells, Cultured; D017635:Clonal Anergy; D003713:Dendritic Cells / Q000166:cytology / Q000276:immunology*; D004705:Endocytosis / Q000502:physiology; D005434:Flow Cytometry; D006801:Humans; D016753:Interleukin-10 / Q000276:immunology*; D009000:Monocytes / Q000187:drug effects* / Q000276:immunology / Q000378:metabolism; D010641:Phenotype
D000941:Antigens; D016753:Interleukin-10