Article ; Online: IgE regulates T helper cell differentiation through FcgammaRIII mediated dendritic cell cytokine modulation.
2010 Volume 264, Issue 1, Page(s) 54–60
Abstract: Asthma and allergy are characterized by dysregulation of inflammatory responses toward Th2 responses and high serum levels of IgE. IgE plays a role in the effector phase by triggering the degranulation of mast cells after antigen-crosslinking but its ... ...
Abstract | Asthma and allergy are characterized by dysregulation of inflammatory responses toward Th2 responses and high serum levels of IgE. IgE plays a role in the effector phase by triggering the degranulation of mast cells after antigen-crosslinking but its role in the induction of helper T cell differentiation is unknown. We have previously shown lymphotoxin is required for maintaining physiological levels of serum IgE which minimize spontaneous Th1-mediated airway inflammation, suggesting a physiological role for IgE in the regulation of T helper cell differentiation. We describe the mechanism in which IgE modulates inflammation by regulating dendritic cell cytokine production. Physiological levels of IgE suppress IL-12 production in the spleen and lung, suggesting IgE limits Th1 responses in vivo. IgE directly stimulates dendritic cells through FcgammaRIII to suppress IL-12 in vitro and influences APC to skew CD4+ T cells toward Th2 differentiation. We demonstrate a novel role for IgE in regulating differentiation of adaptive inflammatory responses through direct interaction with FcgammaRIII on dendritic cells. |
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MeSH term(s) | Animals ; Cell Differentiation ; Cells, Cultured ; Cytokines/genetics ; Cytokines/metabolism ; Dendritic Cells/immunology ; Dendritic Cells/metabolism ; Dendritic Cells/pathology ; Homeodomain Proteins/genetics ; Immunoglobulin E/blood ; Immunoglobulin E/genetics ; Immunoglobulin E/metabolism ; Lung/metabolism ; Lymphotoxin-alpha/genetics ; Lymphotoxin-beta/genetics ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Receptor Aggregation ; Receptors, IgG/genetics ; Receptors, IgG/immunology ; Receptors, IgG/metabolism ; Spleen/metabolism ; Th1 Cells/immunology ; Th1 Cells/metabolism ; Th1 Cells/pathology ; Th2 Cells/immunology ; Th2 Cells/metabolism ; Th2 Cells/pathology |
Chemical Substances | Cytokines ; Fcgr3 protein, mouse ; Homeodomain Proteins ; Lymphotoxin-alpha ; Lymphotoxin-beta ; Receptors, IgG ; RAG-1 protein (128559-51-3) ; Immunoglobulin E (37341-29-0) |
Language | English |
Publishing date | 2010-05-04 |
Publishing country | Netherlands |
Document type | Journal Article |
ZDB-ID | 80094-6 |
ISSN | 1090-2163 ; 0008-8749 |
ISSN (online) | 1090-2163 |
ISSN | 0008-8749 |
DOI | 10.1016/j.cellimm.2010.04.011 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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