title: In vitro study of immunosuppressive effect of apoptotic cells.
abstract: Recent studies revealed that apoptotic cells are actively involved in immunosuppression and anti-inflammation. After being phagocytosed by macrophages, apoptotic cells can actively regulate cytokines secretion from lipopolysaccharide (LPS)-stimulated macrophages, in which the secretion of immunosuppressive cytokines such as interleukin-10 (IL-10) is increased while the pro-inflammatory cytokines such as tumor necrosis factor-alpha (TNFa), interleukin-1beta (IL-1b) and leukin-8 (IL-8) are suppressed. In this paper, we first present evidence that phagocytosed apoptotic cells regulate cytokine secretion of LPS-stimulated macrophages, but also inhibit the activation of T lymphocytes stimulated by ConA. These data suggest that apoptotic cells can alter the biological behavior of macrophages which gain immunosuppressive property.
authors.affiliation: Department of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310027, China.
authors.forename: Wen-Jin
authors.initials: WJ
authors.lastname: Zhang
authors.forename: Shu-Sen
authors.initials: SS
authors.lastname: Zheng
mesh_terms: D000818:Animals; D015703:Antigens, CD / Q000378:metabolism; D000945:Antigens, Differentiation, T-Lymphocyte / Q000378:metabolism; D017209:Apoptosis / Q000276:immunology*; D054426:Chemokine CXCL2; D018925:Chemokines / Q000096:biosynthesis / Q000235:genetics; D003208:Concanavalin A / Q000494:pharmacology; D016207:Cytokines / Q000096:biosynthesis; D005260:Female; D006801:Humans; D007108:Immune Tolerance; D066298:In Vitro Techniques; D019169:Jurkat Cells; D037181:Lectins, C-Type; D008070:Lipopolysaccharides / Q000494:pharmacology; D008213:Lymphocyte Activation / Q000187:drug effects; D008264:Macrophages / Q000187:drug effects / Q000276:immunology; D051379:Mice; D008813:Mice, Inbred ICR; D010587:Phagocytosis; D015375:Receptors, Interleukin-2 / Q000378:metabolism; D015398:Signal Transduction / Q000276:immunology; D013601:T-Lymphocytes / Q000187:drug effects / Q000276:immunology; D014409:Tumor Necrosis Factor-alpha / Q000096:biosynthesis / Q000235:genetics; D000099192:CD69 Antigens
chemical_list: D015703:Antigens, CD; D000945:Antigens, Differentiation, T-Lymphocyte; D054426:Chemokine CXCL2; D018925:Chemokines; D003208:Concanavalin A; D016207:Cytokines; D037181:Lectins, C-Type; D008070:Lipopolysaccharides; D015375:Receptors, Interleukin-2; D014409:Tumor Necrosis Factor-alpha; D000099192:CD69 Antigens; C404915:Cxcl2 protein, mouse