title: Effect of interleukin-10 on anti-CD40- and interleukin-4-induced immunoglobulin E production by human lymphocytes.
abstract: We studied the effect of IL-10 on the in vitro synthesis of IgE and IgG by human peripheral blood mononuclear cells (PBMC) following stimulation with anti-CD40 monoclonal antibody and IL-4. Anti-CD40- and IL-4-stimulated PBMC showed an increase in IL-10 synthesis together with increases in IgE and IgG production. Addition of anti-IL-10 antibody to this system suppressed IgE as well as IgG production without affecting the proliferation of PBMC. Addition of IL-10 enhanced IgE and IgG production if PBMC were activated with anti-CD40 and IL-4. PBMC costimulated with anti-CD40, IL-4 and IL-10 showed a remarkable increase in IL-6 production, but had no effect on IFN-gamma production. Addition of IL-10 to purified human tonsillar B cells stimulated with anti-CD40 and IL-4 enhanced B cell proliferation and IgG production, but not IgE production. These results suggest that IL-10 accelerates IgE production by anti-CD40- and IL-4-stimulated PBMC by enhancing IL-6 production through activation of T lymphocytes.
authors.affiliation: Pharmaceutical Discovery Research Laboratory, Teijin Institute for Biomedical Research, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Uejima
authors.forename: K
authors.initials: K
authors.lastname: Takahashi
authors.forename: K
authors.initials: K
authors.lastname: Komoriya
authors.forename: S
authors.initials: S
authors.lastname: Kurozumi
authors.forename: H D
authors.initials: HD
authors.lastname: Ochs
mesh_terms: D000328:Adult; D001402:B-Lymphocytes / Q000187:drug effects / Q000378:metabolism*; D019013:CD40 Antigens / Q000276:immunology*; D006801:Humans; D007073:Immunoglobulin E / Q000096:biosynthesis*; D007074:Immunoglobulin G / Q000096:biosynthesis; D007371:Interferon-gamma / Q000096:biosynthesis; D016753:Interleukin-10 / Q000096:biosynthesis / Q000494:pharmacology*; D015847:Interleukin-4 / Q000494:pharmacology*; D015850:Interleukin-6 / Q000096:biosynthesis; D007963:Leukocytes, Mononuclear / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D008213:Lymphocyte Activation / Q000187:drug effects; D008297:Male; D014066:Palatine Tonsil / Q000378:metabolism
chemical_list: D019013:CD40 Antigens; D007074:Immunoglobulin G; D015850:Interleukin-6; D016753:Interleukin-10; D015847:Interleukin-4; D007073:Immunoglobulin E; D007371:Interferon-gamma