Biomaterial Database

Characterization of the IgE Fc receptors on monocytes and macrophages. 1983

H L Spiegelberg, and G Boltz-Nitulescu, and J M Plummer, and F M Melewicz

Subpopulations of human monocytes (15%) and alveolar macrophages (AM phi, 8%) and rat and mouse AM phi (89%) and peritoneal M phi (57%) bear Fc receptors for IgE (Fc epsilon R) as shown by IgE-specific rosette formation. Cells from M phi-like cell lines of human, rat, and mouse origins also express Fc epsilon R. Monomeric IgE binds to Fc epsilon R on M phi with an equilibrium association constant Ka congruent to 10(7) M-1. The Fc epsilon R on human monocytes and M phi are antigenically similar to Fc epsilon R on lymphocytes but differ from Fc epsilon R on basophilic granulocytes. The Fc epsilon R on human and mouse M phi promote phagocytosis and lysis of IgE-coated erythrocytes. Patients with active IgE-mediated allergic diseases have elevated percentages of Fc epsilon R(+) monocytes (56%) that show allergic increased lytic activity against IgE-coated erythrocytes as compared to monocytes from normal humans. M phi from rats infested with Nippostrongylus brasiliensis parasites express more Fc epsilon R than normal M phi. The data indicate that Fc epsilon R expressed on M phi differ from those on mast cells and basophils, increase in number during IgE immune responses, and are likely to play an important role in the host's defense against parasites and in the pathogenesis of allergic diseases.

UI	MeSH Term	Description	Entries
D007073	Immunoglobulin E	An immunoglobulin associated with MAST CELLS. Overexpression has been associated with allergic hypersensitivity (HYPERSENSITIVITY, IMMEDIATE).	IgE
D007139	Immunoglobulin epsilon-Chains	The class of heavy chains found in IMMUNOGLOBULIN E. They have a molecular weight of approximately 72 kDa and they contain about 550 amino acid residues arranged in five domains and about three times more carbohydrate than the heavy chains of IMMUNOGLOBULIN A; IMMUNOGLOBULIN D; and IMMUNOGLOBULIN G.	Ig epsilon Chains,Immunoglobulins, epsilon-Chain,Immunoglobulin epsilon-Chain,epsilon-Chain Immunoglobulins,epsilon-Immunoglobulin Heavy Chain,epsilon-Immunoglobulin Heavy Chains,Chains, Ig epsilon,Heavy Chain, epsilon-Immunoglobulin,Heavy Chains, epsilon-Immunoglobulin,Immunoglobulin epsilon Chain,Immunoglobulin epsilon Chains,Immunoglobulins, epsilon Chain,epsilon Chain Immunoglobulins,epsilon Chains, Ig,epsilon Immunoglobulin Heavy Chain,epsilon Immunoglobulin Heavy Chains,epsilon-Chain, Immunoglobulin,epsilon-Chains, Immunoglobulin
D008214	Lymphocytes	White blood cells formed in the body's lymphoid tissue. The nucleus is round or ovoid with coarse, irregularly clumped chromatin while the cytoplasm is typically pale blue with azurophilic (if any) granules. Most lymphocytes can be classified as either T or B (with subpopulations of each), or NATURAL KILLER CELLS.	Lymphoid Cells,Cell, Lymphoid,Cells, Lymphoid,Lymphocyte,Lymphoid Cell
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
D009000	Monocytes	Large, phagocytic mononuclear leukocytes produced in the vertebrate BONE MARROW and released into the BLOOD; contain a large, oval or somewhat indented nucleus surrounded by voluminous cytoplasm and numerous organelles.	Monocyte
D010587	Phagocytosis	The engulfing and degradation of microorganisms; other cells that are dead, dying, or pathogenic; and foreign particles by phagocytic cells (PHAGOCYTES).	Phagocytoses
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
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012397	Rosette Formation	The in vitro formation of clusters consisting of a cell (usually a lymphocyte) surrounded by antigenic cells or antigen-bearing particles (usually erythrocytes, which may or may not be coated with antibody or antibody and complement). The rosette-forming cell may be an antibody-forming cell, a memory cell, a T-cell, a cell bearing surface cytophilic antibodies, or a monocyte possessing Fc receptors. Rosette formation can be used to identify specific populations of these cells.	Immunocytoadherence,Formation, Rosette,Formations, Rosette,Immunocytoadherences,Rosette Formations