Biomaterial Database

Formation of IgE-binding factors by rat T lymphocytes. VI. Cellular mechanisms for the formation of IgE-potentiating factor and IgE-suppressive factor by antigenic stimulation of antigen-primed spleen cells. 1982

T Uede, and K Ishizaka

Analysis of cellular mechanisms of formation of IgE-binding factors by KLH-primed spleen cells revealed that the presentation of KLH to KLH-primed T cells by adherent cells resulted in the formation of lymphokines that in turn stimulated unprimed lymphocytes to form IgE-binding factors. Lymphokines released from KLH-alum-primed spleen cells induced normal lymphocytes to form IgE-potentiating factors, whereas those released from KLH-CFA-primed spleen cells induced the formation of IgE-suppressive factors. Fractionation of the lymphokines from KLH-primed spleen cells and analysis of cell sources of the lymphokines revealed that multiple factors are involved in the selective formation of one or the other IgE-binding factors. Thus, KLH-alum primed splenic T cells from "inducers" of IgE-binding factors and glycosylation-enhancing factors upon antigenic stimulation, and these factors in combination stimulate unprimed W 3/25+ Fc gamma R+ T cells to form IgE-potentiating factors. Antigenic stimulation of KLH-CFA-primed T cells results in the formation of the "inducers" and glycosylation-inhibiting factors, and these two lymphokines collectively stimulate unprimed W 3/25+ Fc gamma R+ T cells to form IgE-suppressive factors. Cell sources of "inducers" are W 3/25+ Fc gamma R- T cells, cells different from the source of IgE-binding factors. The glycosylation-enhancing factor is derived from W 3/25+ F gamma R+ T cells in KLH-alum-primed spleen; the glycosylation-inhibiting factor is derived from OX 8+ T cells in KLH-CFA-primed spleen. Evidence was obtained that these lymphokines, which modulate the protein glycosylation of IgE-binding factors during their biosynthesis, are derived from antigen-primed T cells and determine the nature of IgE-binding factors formed.

UI	MeSH Term	Description	Entries
D007073	Immunoglobulin E	An immunoglobulin associated with MAST CELLS. Overexpression has been associated with allergic hypersensitivity (HYPERSENSITIVITY, IMMEDIATE).	IgE
D007108	Immune Tolerance	The specific failure of a normally responsive individual to make an immune response to a known antigen. It results from previous contact with the antigen by an immunologically immature individual (fetus or neonate) or by an adult exposed to extreme high-dose or low-dose antigen, or by exposure to radiation, antimetabolites, antilymphocytic serum, etc.	Immunosuppression (Physiology),Immunosuppressions (Physiology),Tolerance, Immune
D007111	Immunity, Cellular	Manifestations of the immune response which are mediated by antigen-sensitized T-lymphocytes via lymphokines or direct cytotoxicity. This takes place in the absence of circulating antibody or where antibody plays a subordinate role.	Cell-Mediated Immunity,Cellular Immune Response,Cell Mediated Immunity,Cell-Mediated Immunities,Cellular Immune Responses,Cellular Immunities,Cellular Immunity,Immune Response, Cellular,Immune Responses, Cellular,Immunities, Cell-Mediated,Immunities, Cellular,Immunity, Cell-Mediated,Response, Cellular Immune
D007156	Immunologic Memory	The altered state of immunologic responsiveness resulting from initial contact with antigen, which enables the individual to produce antibodies more rapidly and in greater quantity in response to secondary antigenic stimulus.	Immune Memory,Immunological Memory,Memory, Immunologic,Immune Memories,Immunologic Memories,Immunological Memories,Memory, Immune,Memory, Immunological
D007166	Immunosuppressive Agents	Agents that suppress immune function by one of several mechanisms of action. Classical cytotoxic immunosuppressants act by inhibiting DNA synthesis. Others may act through activation of T-CELLS or by inhibiting the activation of HELPER CELLS. While immunosuppression has been brought about in the past primarily to prevent rejection of transplanted organs, new applications involving mediation of the effects of INTERLEUKINS and other CYTOKINES are emerging.	Immunosuppressant,Immunosuppressive Agent,Immunosuppressants,Agent, Immunosuppressive,Agents, Immunosuppressive
D008222	Lymphokines	Soluble protein factors generated by activated lymphocytes that affect other cells, primarily those involved in cellular immunity.	Lymphocyte Mediators,Mediators, Lymphocyte
D008264	Macrophages	The relatively long-lived phagocytic cell of mammalian tissues that are derived from blood MONOCYTES. Main types are PERITONEAL MACROPHAGES; ALVEOLAR MACROPHAGES; HISTIOCYTES; KUPFFER CELLS of the liver; and OSTEOCLASTS. They may further differentiate within chronic inflammatory lesions to EPITHELIOID CELLS or may fuse to form FOREIGN BODY GIANT CELLS or LANGHANS GIANT CELLS. (from The Dictionary of Cell Biology, Lackie and Dow, 3rd ed.)	Bone Marrow-Derived Macrophages,Monocyte-Derived Macrophages,Macrophage,Macrophages, Monocyte-Derived,Bone Marrow Derived Macrophages,Bone Marrow-Derived Macrophage,Macrophage, Bone Marrow-Derived,Macrophage, Monocyte-Derived,Macrophages, Bone Marrow-Derived,Macrophages, Monocyte Derived,Monocyte Derived Macrophages,Monocyte-Derived Macrophage
D011961	Receptors, Fc	Molecules found on the surface of some, but not all, B-lymphocytes, T-lymphocytes, and macrophages, which recognize and combine with the Fc (crystallizable) portion of immunoglobulin molecules.	Fc Receptors,Fc Receptor,Receptor, Fc
D002352	Carrier Proteins	Proteins that bind or transport specific substances in the blood, within the cell, or across cell membranes.	Binding Proteins,Carrier Protein,Transport Protein,Transport Proteins,Binding Protein,Protein, Carrier,Proteins, Carrier
D002478	Cells, Cultured	Cells propagated in vitro in special media conducive to their growth. Cultured cells are used to study developmental, morphologic, metabolic, physiologic, and genetic processes, among others.	Cultured Cells,Cell, Cultured,Cultured Cell