The induction of IgE synthesis by IL-4 requires T cells and monocytes, as well as T cell- and monocyte-derived cytokines. Optimal cytokine combinations, however, fail to induce highly purified B cells to secrete IgE, indicating that additional signals are required. We show herein that the induction of human IgE synthesis by rIL-4 requires cognate interaction between the T cell receptor/CD3 comp...

Omalizumab (anti-IgE ab) is a recombinant humanized monoclonal antibody (rhuMAb-E25) developed by immunizing mice with human IgE. Then, a monoclonal antibody was selected that recognizes IgE at the same site as the highaffinity receptor for IgE (FcεRI). Omalizumab is the only Mab to date that has been found to be effective and approved by both the FDA and European Medicines Agency (EMA) for the...

ObjectiveThe purpose of this article is to review the pathophysiologic mechanisms, differential diagnosis, evaluation, and treatment various manifestations ocular allergy, with an especial focus on immunoglobulin E (IgE)-mediated disease.Data SourcesA PubMed search was performed include articles, using terms allergy allergic conjunctivitis.Study SelectionsRecent relevant human studies in Englis...

A chimeric human IgE monoclonal antibody was developed against the house dust mite allergen Der p 2. This chimeric antibody (hIgE-Dp2A) was composed of the heavy-chain variable domains and light chains of the original murine monoclonal antibody retaining its binding characteristics, whereas the heavy-chain constant domains were exchanged with the human IgE heavy chain. The chimeric IgE expressi...

BACKGROUND IgE-mediated activation of mast cells has been reported to induce the release of tumour necrosis alpha (TNF-α), which may display autocrine effects on these cells by inducing the generation of the tissue remodelling protease matrix metalloproteinase-9 (MMP-9). While mast cells and basophils have been shown to express complementary and partially overlapping roles, it is not clear whet...

A better understanding of the pathophysiological role of Langerhans cells (LC) in atopic diseases is dictated by the characterization of the structures involved in immunoglobulin (IgE)-binding on their cell surface. We previously reported that human LC express the high affinity receptor for IgE (Fc epsilon RI), as well as the low affinity receptor for IgE (Fc epsilon RII/CD23). In the present s...

IgE was the last of the five immunoglobulin classes to be discovered and is the antibody that is responsible for much of human type I allergic disease. This review summarizes recent developments with respect to control of IgE synthesis with an emphasis on Th2 (T helper 2) control and regulation using IgE Fc receptors.

Omalizumab is an anti-human IgE humanized monoclonal antibody produced against CƐ3 domain of the Fc fragment of IgE molecule. Omalizumab suppresses the effector roles of IgE by preventing binding to high-affinity receptors (FcεR1) on allergy-related immune effector cells and blocking mast cell or basophil mediator release.4 Based on this mechanism of action, Omab also provides symptomatic relie...