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Patients with atopic dermatitis (AD) have significantly reduced plasma cAMP levels, and the cAMP level is correlated with the immunopathogenesis of AD. The production of thymus and activation-regulated chemokine (TARC/CCL17) and macrophage-derived chemokine (MDC/CCL22) in keratinocytes is...
Expression of the anti-inflammatory cytokine IL-10 can be induced either by TLR agonists such as lipopolysaccharide (LPS), or by various endogenous stimuli, in particular those acting via a cAMP-dependent signaling pathway. We have previously reported that the synthetic phospho-ceramide...
Our studies in the RBL-2H3 mast cell line suggest that responses to antigen (Ag) are negatively modulated through upregulation of Src-like adaptor protein (SLAP). Ag stimulation of RBL-2H3 cells leads to increased levels of SLAP (but not SLAP2) transcripts and protein over a period of several...
Yellow jacket ( Vespula vulgaris) hyaluronidase (Ves v 2) is a glycoprotein and a mixture of two isoallergens, Ves v 2.01 and Ves v 2.02. Wasp and bee sensitized individuals frequently show IgE antibodies that in vitro recognize common carbohydrate structures across the hymenoptera species. The...
Chronic Granulomatous Disease (CGD) is a rare inherited disorder in which phagocytes fail to produce antimicrobial superoxide because NADPH oxidase activity is absent. In about 65% of the cases, the disease is due to mutations affecting the X-linked CYBB gene, encoding the gp91 phox subunit of...
CD200 plays an important role in prevention of graft rejection, autoimmune diseases and spontaneous abortion by delivering an immunoregulatory signal through interaction with its receptor. It also plays a role in regulating tumor immunity. We previously documented evidence for C/EBPβ as being...
The physiological roles of PKCα and PKCθ were defined in T cell immune functions downstream of the antigen receptor. To investigate the hypothesis that both PKC isotypes may have overlapping functions, we generated mice lacking both genes. We find that PKCα −/− / θ −/− animals have...
Mice prematurely expressing human CR2 (hCR2) in the B cell lineage have a defective B cell ontogeny and humoral immune response. We have previously determined altered tyrosine phosphorylation patterns within hCR2 transgenic mice, suggesting that irreversible changes in B cell signaling pathways...
IL-4 develops Th2-biased immunity or allergic inflammation through activation of STAT6-dependent signaling. In vascular endothelial cells (ECs), IL-4 elicits regulatory effects on chemokine production and adhesion molecule expression to recruit T cells and eosinophils. In this study, we examined...
The transmembrane protein tapasin has an essential role in the assembly of stable major histocompatibility (MHC) class I/peptide complexes. Within the endoplasmic reticulum, tapasin associates with both the transporter associated with antigen processing (TAP) and the MHC class I molecule. The...
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