Fas Ligand-Expressing B-1a Lymphocytes Mediate CD4 + -T-Cell Apoptosis during Schistosomal Infection: Induction by Interleukin 4 (IL-4) and IL-10
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چکیده
منابع مشابه
An interleukin 4 (IL-4)-independent pathway for CD4+ T cell IL-4 production is revealed in IL-4 receptor-deficient mice.
IL-4 receptor alpha chain (IL-4Ralpha)-deficient mice were generated by gene-targeting in BALB/c embryonic stem cells. Mutant mice showed a loss of IL-4 signal transduction and functional activity. The lack of IL-4Ralpha resulted in markedly diminished, but not absent, TH2 responses after infection with the helminthic parasite Nippostrongylus brasiliensis. CD4+, CD62L-high, and CD62L-low T cell...
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Interleukin (IL)-4 is known to be the most potent cytokine that can initiate Th2 cell differentiation. Paradoxically, IL-4 instructs dendritic cells (DCs) to promote Th1 cell differentiation. We investigated the mechanisms by which IL-4 directs CD4 T cells toward the Th1 cell lineage. Our study demonstrates that the IL-4-mediated induction of Th1 cell differentiation requires IL-10 production b...
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Interleukin (IL)-4 is the most potent factor that causes naive CD4+ T cells to differentiate to the T helper cell (Th) 2 phenotype, while IL-12 and interferon gamma trigger the differentiation of Th1 cells. However, the source of the initial polarizing IL-4 remains unclear. Here, we show that IL-6, probably secreted by antigen-presenting cells, is able to polarize naive CD4+ T cells to effector...
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The mechanisms underlying the extrathymic generation of CD25+CD4 regulatory T cells (Tregs) are largely unknown. In this study the IL-4R alpha-chain-binding cytokines, IL-4 and IL-13, were identified as inducers of CD25+ Tregs from peripheral CD25-CD4 naive T cells. IL-4-induced CD25+ Tregs phenotypically and functionally resemble naturally occurring Tregs in that they are anergic to mitogenic ...
متن کاملGATA-3 directly remodels the IL-10 locus independently of IL-4 in CD4+ T cells.
IL-10 is a major regulator in inflammatory responses. Although various transcription factors were defined to enhance IL-10, the molecular mechanism for the initiation of Il-10 transcription, remains unknown. mRNA profiling of six distinct primary CD4+ T cell populations showed differential expression of the transcription factor GATA-3 correlated with levels of IL-10 expression. We showed that e...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 2002
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.70.2.812-819.2002