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PMID |
Sentence |
1 |
23609452
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60-kDa Tat-interactive protein (TIP60) positively regulates Th-inducing POK (ThPOK)-mediated repression of eomesodermin in human CD4+ T cells.
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2 |
23609452
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The abundant expression of IFNγ in Th-inducing POK (ThPOK)-deficient CD4(+) T cells requires the activation of Eomesodermin (Eomes); however, the underlying mechanism of this phenomenon remains unclear.
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3 |
23609452
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Here we report that ThPOK binds directly to the promoter region of the Eomes gene to repress its expression in CD4(+) T cells.
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4 |
23609452
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We identified the histone acetyltransferase TIP60 as a co-repressor of ThPOK-target genes, where ectopically expressed TIP60 increased ThPOK protein stability by promoting its acetylation at its Lys(360) residue to then augment the transcriptional repression of Eomes.
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5 |
23609452
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Moreover, knockdown of endogenous TIP60 abolished the stabilization of ThPOK in CD4(+) T cells, which led to the transcriptional activation of Eomes and increased production of IFNγ.
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6 |
23609452
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Our results reveal a novel pathway by which TIP60 and ThPOK synergistically suppresses Eomes function and IFNγ production, which could contribute to the regulation of inflammation.
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