| # |
PMID |
Sentence |
| 1 |
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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| 2 |
19689734
|
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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| 3 |
19689734
|
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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| 4 |
19689734
|
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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| 5 |
19689734
|
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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| 6 |
19689734
|
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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| 7 |
19689734
|
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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| 8 |
19689734
|
Additionally, we found that T-bet is required to maintain Ifng expression.
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| 9 |
19689734
|
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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