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PMID |
Sentence |
| 1 |
7663570
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Lymph nodes containing microscopic tumor and shed mucin exhibited approximately 40-fold expansion in short-term (< 21 days) cultures with either IL-2 or IL-1 plus IL-2; the combination of IL-2/anti-CD3 monoclonal antibody (mAb) resulted in significantly higher expansion.
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| 2 |
7663570
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Cultures generated with IL-2 alone favored the expansion of CD8+ and CD56+ cells, whereas addition of IL-1 or anti-CD3 mAb to IL-2 promoted outgrowth of CD4+ T-cells.
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| 3 |
7663570
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However, CD4+ cells expanded in IL-2/anti-CD3 retained the ability to proliferate in response to TAG-72 mucin-expressing autologous tumor as well as bovine submaxillary mucin (BSM) a soluble TAG-72+ mucin.
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| 4 |
7663570
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In addition, CD4+ cells expressed mRNA for IL-2, IL-4, tumor necrosis factor-beta and IFNg, and retained the ability to secrete IL-2 after expansion.
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| 5 |
15597669
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The cytokine response detected in ABPA patients is of a CD4+ Th2 type as evidenced by the production of IL-4, IL-5, and very little or no IFN-g on stimulation of T-lymphocytes with Aspergillus antigens.
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| 6 |
15659263
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The role of distinct CD4+ T-cell populations in regulating the nature and strength of immune responses is well documented, and has in the past principally focused on the mutual antagonism between Th1 and Th2 cells, which secrete interferon (IFN)-gamma and interleukin (IL)-4, respectively.
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| 7 |
15659263
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However, the recent identification of T cells that secrete high levels of IL-10 and/or transforming growth factor-b, but not IFN-g or IL-4, called regulatory T (Tr) cells has prompted a paradigm shift in our understanding of the regulation of immune responses following infection.
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| 8 |
16520391
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T-bet regulates Th1 responses through essential effects on GATA-3 function rather than on IFNG gene acetylation and transcription.
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| 9 |
16520391
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T helper type 1 (Th1) development is facilitated by interrelated changes in key intracellular factors, particularly signal transducer and activator of transcription (STAT)4, T-bet, and GATA-3.
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| 10 |
16520391
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Here we show that CD4+ cells from T-bet-/- mice are skewed toward Th2 differentiation by high endogenous GATA-3 levels but exhibit virtually normal Th1 differentiation provided that GATA-3 levels are regulated at an early stage by anti-interleukin (IL)-4 blockade of IL-4 receptor (R) signaling.
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| 11 |
16520391
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In addition, under these conditions, Th1 cells from T-bet-/- mice manifest IFNG promotor accessibility as detected by histone acetylation and deoxyribonuclease I hypersensitivity.
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| 12 |
16520391
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In related studies, we show that the negative effect of GATA-3 on Th1 differentiation in T-bet-/- cells arises from its ability to suppress STAT4 levels, because if this is prevented by a STAT4-expressing retrovirus, normal Th1 differentiation is observed.
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| 13 |
16520391
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Finally, we show that retroviral T-bet expression in developing and established Th2 cells leads to down-regulation of GATA-3 levels.
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| 14 |
16520391
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These findings lead to a model of T cell differentiation that holds that naive T cells tend toward Th2 differentiation through induction of GATA-3 and subsequent down-regulation of STAT4/IL-12Rbeta2 chain unless GATA-3 levels or function is regulated by T-bet.
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| 15 |
16520391
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Thus, the principal function of T-bet in developing Th1 cells is to negatively regulate GATA-3 rather than to positively regulate the IFNG gene.
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| 16 |
19689734
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A continuous T-bet expression is required to silence the interleukin-4-producing potential in T helper type 1 cells.
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| 17 |
19689734
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To develop into committed T helper type 1 (Th1) cells, naive CD4(+) T cells not only need to acquire the capacity to produce interferon-gamma (IFN-gamma), but they also need to gain the ability to silence their interleukin-4 (IL-4) -producing potential.
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| 18 |
19689734
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We found that a lack of IL-4 stimulation was not sufficient to silence the IL-4-producing potential in activated CD4(+) T cells and that Th1-promoting factor was required.
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| 19 |
19689734
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Although it has been shown that T-bet is a crucial factor in suppressing Il4 gene expression, it is unclear whether a continuous presence of T-bet is required to silence the Il4 gene in Th1 cells.
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| 20 |
19689734
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To address this problem, we used an inducible form of T-bet - a T-bet-oestrogen receptor fusion molecule (T-bet-ER).
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| 21 |
19689734
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We found that the activation of T-bet during primary or secondary culture was sufficient to silence IL-4-producing potential.
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| 22 |
19689734
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On the other hand, the inactivation of T-bet after naïve CD4(+) T cells had differentiated into Th1 cells resulted in derepression of Il4 gene transcription.
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| 23 |
19689734
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Additionally, we found that T-bet is required to maintain Ifng expression.
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| 24 |
19689734
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Our data demonstrate that the continuous expression of T-bet is required for Th1 cells to silence their IL-4-producing potential.
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| 25 |
20621581
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Epinephrine-primed murine bone marrow-derived dendritic cells facilitate production of IL-17A and IL-4 but not IFN-γ by CD4+ T cells.
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| 26 |
20621581
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Epinephrine pre-treatment enhanced surface expression of MHCII, CD80 and CD86.
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| 27 |
20621581
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Epinephrine pre-treatment also induced a significant decrease of IL-12p70 and a significant increase of IL-23 and IL-10 cytokine production.
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| 28 |
20621581
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Importantly, these changes corresponded with increased IL-4 and IL-17A, but not IFN-g cytokine production by CD4(+) T cells in a b2-adrenergic receptor-dependent manner.
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| 29 |
20963786
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Changes in histone acetylation and methylation that are important for persistent but not transient expression of CCR4 in human CD4+ T cells.
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| 30 |
20963786
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Although regulation of CXCR3 and CCR4 is related to Th1 and Th2 differentiation, respectively, many CXCR3(+) and CCR4(+) cells do not express IFN-γ and/or IL-4, suggesting that the chemokine receptor genes might be inducible by mechanisms that are lineage-independent.
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| 31 |
20963786
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We investigated the regulation of CXCR3 versus IFNG, and CCR4 versus IL4 in human CD4(+) T cells by analyzing modifications of histone H3.
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| 32 |
20963786
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In naïve cord-blood cells, under nonpolarizing conditions not inducing IL4, CCR4 was induced to high levels without many of the activation-associated changes in promoter histone H3 found for both IL4 and CCR4 in Th2 cells.
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| 33 |
20963786
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Patterns of histone H3 modifications in CXCR3(+) CCR4(-) and CXCR3(-) CCR4(+) CD4(+) T-cell subsets from adult blood matched those in cells cultured under polarizing conditions in vitro.
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| 34 |
21783593
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Mice were treated with DNCB and TDI showed a preferential increase in the percentage of CD4+IL-2+ cells compared with vehicle and irritant-treated mice.
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| 35 |
21783593
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There was an increase in CD4+IFN-g+ cells of mice treated with DNCB and TDI, but no significant increases were observed in mice treated with SLS.
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| 36 |
21783593
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Mice were treated with DNCB and TDI showed an increase in the percentage of CD4+IL-4+ cells compared with vehicle and irritant-treated mice.
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| 37 |
21783593
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These results suggest that the population of interferon-gamma (IFN-g+) and IL-4+ cells on CD4+ cells and the mRNA expression for IL-4 in lymphocytes could be selectively modulated in allergen-treated mice.
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| 38 |
23761633
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STAT4 and T-bet are required for the plasticity of IFN-γ expression across Th2 ontogeny and influence changes in Ifng promoter DNA methylation.
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| 39 |
23761633
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CD4(+) T cells developing toward a Th2 fate express IL-4, IL-5, and IL-13 while inhibiting production of cytokines associated with other Th types, such as the Th1 cytokine IFN- γ.
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| 40 |
23761633
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We now show that this flexibility ("plasticity") of cytokine expression is preceded by a loss of the repressive DNA methylation of the Ifng promoter acquired during Th2 polarization yet requires STAT4 along with T-box expressed in T cells.
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| 41 |
23761633
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Surprisingly, loss of either STAT4 or T-box expressed in T cells increased Ifng promoter CpG methylation in both effector and memory Th2 cells.
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| 42 |
24204280
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Moreover, we revealed that the presentation of HLA-DQβ enhanced by LANA knockdown did not help LANA-specific CD4+ T cell recognition of PEL cells, and the inhibition of CIITA by LANA is independent of IL-4 or IFN-γ signaling but dependent on the direct interaction of LANA with IRF-4 (an activator of both the pIII and pIV CIITA promoters).
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