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The postulated NF-κB binding site of the TSDR is not transcriptionally responsive to activated NF-κB.

Abstract

<p>(<b>A</b>) RLM-11 cells were stimulated with PMA/iono for indicated time periods and applied to subcellular fractionation. Nuclear and cytoplasmic extracts were analyzed by Western blotting using the indicated antibodies. p44/42 and lamin B served as loading and purity controls for cytoplasmic and nuclear fractions, respectively. (<b>B</b>) A luciferase reporter plasmid integrating the NF-κB-RE was transfected into RLM-11 cells and dual luciferase assays were performed in triplicates as described in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0088318#pone-0088318-g001" target="_blank">Figure 1</a>. Mean luciferase activity is shown as fold increase to unstimulated control. Results are representative of four independent experiments. (<b>C</b>) A schematic view on the first part of the <i>Foxp3</i> gene locus is depicted. White boxes indicate untranslated exons, the first translated exon is indicated in black. Evolutionary conserved non-coding sequences (CNS) are indicated in grey. The distended region of the TSDR includes the previously described NF-κB binding site (black frame), which is flanked by the seventh CpG motif (underlined) of the TSDR. (<b>D</b>) A tandem of five repetitive sequences of the putative NF-κB binding site was inserted into the pCpGL luciferase reporter plasmid upstream of the <i>EF</i> promoter (tandem-EFPro). Dual luciferase assays were performed as described in (B) using pCpGL-TSDR-EFPro as a positive control. Data represent one out of two independent experiments.</p

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The Francis Crick Institute

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Last time updated on 12/02/2018

This paper was published in The Francis Crick Institute.

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