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PMID |
Sentence |
| 1 |
18549798
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Janus-kinase-3-dependent signals induce chromatin remodeling at the Ifng locus during T helper 1 cell differentiation.
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| 2 |
18549798
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Differentiation of naive CD4+ T cells into T helper type 1 (Th1) effector cells requires both T cell receptor (TCR) signaling and cytokines such as interleukin-12 and interferon gamma (IFN-gamma).
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| 3 |
18549798
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Here, we report that a third cytokine signal, mediated by the Janus family tyrosine kinase 3 (Jak3) and signal transducer and activator of transcription 5 (STAT5) pathway, is also required for Th1 cell differentiation.
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| 4 |
18549798
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In the absence of Jak3-dependent signals, naive CD4+ T cells proliferate robustly but produce little IFN-gamma after Th1 cell polarization in vitro.
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| 5 |
18549798
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This defect is not due to reduced activation of STAT1 or STAT4 or to impaired upregulation of the transcription factor T-bet.
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| 6 |
18549798
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Instead, we find that T-bet binding to the Ifng promoter is greatly diminished in the absence of Jak3-dependent signals, correlating with a decrease in Ifng promoter accessibility and histone acetylation.
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| 7 |
18549798
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These data indicate that Jak3 regulates epigenetic modification and chromatin remodeling of the Ifng locus during Th1 cell differentiation.
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| 8 |
19384057
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Recently, we reported a novel mechanism by which the T-box transcription factor T-bet interacts with JMJD3, an H3K27-demethylase, and Set7/9, an H3K4-methyltransferase (Genes Dev. 2008. 22: 2980-2993).
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| 9 |
19384057
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Therefore, studies examining the molecular mechanisms that account for the ability of T-bet to regulate Ifng and Cxcr3, prototypic CD4+ Th1 genes, have provided novel insight into essential regulatory events that occur at diverse developmental transitions.
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| 10 |
19464989
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In this issue of Immunity, Schulz et al. (2009) use mathematical modeling to elucidate a signaling network controlling Ifng gene expression, thereby showing the importance of an Interleukin-12-dependent, Interferon-gamma-independent second phase of inducing the transcription factor T-bet.
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| 11 |
20399120
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The transcription factor GATA3 actively represses RUNX3 protein-regulated production of interferon-gamma.
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| 12 |
20399120
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The transcription factor GATA3 is crucial for the differentiation of naive CD4(+) T cells into T helper 2 (Th2) cells.
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| 13 |
20399120
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Here, we show that deletion of Gata3 allowed the appearance of interferon-gamma (IFN-gamma)-producing cells in the absence of interleukin-12 (IL-12) and IFN-gamma.
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| 14 |
20399120
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Such IFN-gamma production was transcription factor T-bet independent.
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| 15 |
20399120
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Another T-box-containing transcription factor Eomes, but not T-bet, was induced both in GATA3-deficient CD4(+) T cells differentiated under Th2 cell conditions and in Th2 cells with enforced Runx3 expression, contributing to IFN-gamma production.
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| 16 |
20399120
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GATA3 overexpression blocked Runx3-mediated Eomes induction and IFN-gamma production, and GATA3 protein physically interacted with Runx3 protein.
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| 17 |
20399120
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Furthermore, we found that Runx3 directly bound to multiple regulatory elements of the Ifng gene and that blocking Runx3 function in either Th1 or GATA3-deficient "Th2" cells results in diminished IFN-gamma production by these cells.
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| 18 |
20399120
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Thus, the Runx3-mediated pathway, actively suppressed by GATA3, induces IFN-gamma production in a STAT4- and T-bet-independent manner.
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| 19 |
21518797
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The lineage-defining factors T-bet and Bcl-6 collaborate to regulate Th1 gene expression patterns.
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| 20 |
21518797
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The T-box transcription factor T-bet is important for the differentiation of naive CD4(+) T helper cells (Th cells) into the Th1 phenotype.
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| 21 |
21518797
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In this study, we first identify Socs1, Socs3, and Tcf7 (TCF-1) as gene targets that are negatively regulated by T-bet.
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| 22 |
21518797
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Consistent with this, we identified two T-bet DNA-binding elements in the Socs1 promoter that are functionally used to down-regulate transcription in primary Th1 cells.
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| 23 |
21518797
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Furthermore, T-bet functionally recruits Bcl-6 to the Ifng locus in late stages of Th1 differentiation to repress its activity, possibly to prevent the overproduction of IFN-γ, which could result in autoimmunity.
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