IgE Surface Even in the Absence of Its Ligand, CD23 Trimers Are Preassociated on the Cell
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منابع مشابه
Role of IgE Low-Affinity Receptor (CD23) in Pathogenesis of Nasal Polyp
Background: Nasal polyps, a common clinical problem, are characterized by eosinophilic and mast cell inflammation. The role of allergy and IgE in pathogenesis of nasal polyps is still unclear. IgE receptors are important components of the immunological pathway in allergic and inflammatory diseases. Objective: To determine if the low affinity IgE receptor (CD23) is presented on nasal polyp tis...
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Recombinant full-length human CD23 has been incorporated into fluorescent liposomes to demonstrate the existence of a ligand for CD23 that is different from the previously known ligand, immunoglobulin E (IgE). The novel ligand for CD23 is expressed on subsets of normal T cells and B cells as well as on some myeloma cell lines. The interaction of full-length CD23 with its ligand is specifically ...
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Immunoglobulin E (IgE) antibodies play a fundamental role in allergic disease and are a target for therapeutic intervention. IgE functions principally through two receptors, FcεRI and CD23 (FcεRII). Minute amounts of allergen trigger mast cell or basophil degranulation by cross-linking IgE-bound FcεRI, leading to an inflammatory response. The interaction between IgE and CD23 on B-cells regulate...
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The CD23 (BLAST-2) antigen, recently identified as the low-affinity IgE receptor of B lymphocytes, has also been implicated as the focus for growth-promoting signals delivered to activated B cells by a low molecular weight B-cell growth factor (BCGF). Here we show that IgE and BCGF can coordinate B-lymphocyte growth through their opposing effects on the CD23 molecule. While the activation of pu...
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Immunoglobulin (Ig) E production by B cells requires two primary signals provided by T cells, interleukin (IL)-4 or IL-13 and CD40 ligand (CD40L). In addition, costimulatory signals, such as CD23-CD21 interaction, contribute further ensuring a selective control over this production. Recently, CD28, expressed on T cells, has been reported to be involved in this process. The CD28 ligands, CD80 (B...
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تاریخ انتشار 2003