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| Status |
Public on Jul 26, 2019 |
| Title |
Pre-marked chromatin and transcription factor co-binding shape the pioneering activity of Foxa2 [RNA-seq low input] |
| Organism |
Mus musculus |
| Experiment type |
Expression profiling by high throughput sequencing
|
| Summary |
Pioneer transcription factors (PTF) can recognize their binding sites on nucleosomal DNA and trigger chromatin opening for recruitment of other non-pioneer transcription factors. However, critical properties of PTFs are still poorly understood, such as how can these transcription factors selectively recognize cell type-specific binding sites and under which conditions can they initiate chromatin remodelling. Here we show that early endoderm binding sites of the paradigm PTF Foxa2 are epigenetically primed by low levels of active chromatin modifications in embryonic stem cells (ESC). Priming of these binding sites is supported by preferential recruitment of Foxa2 to endoderm binding sites compared to lineage-inappropriate binding sites, when ectopically expressed in ESCs. We further show that binding of Foxa2 is required for chromatin opening during endoderm differentiation. However, increased chromatin accessibility was only detected on binding sites which are synergistically bound with other endoderm transcription factors. Thus, our data suggest that binding site selection of PTFs is directed by the chromatin environment and that chromatin opening requires collaboration of PTFs with additional transcription factors.
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| |
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| Overall design |
Transcriptional analysis in control and Foxa2-KO ES or endoderm cells; control and Foxa2-overexpressing ES cells.
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| Contributor(s) |
Cernilogar FM, Schotta G |
| Citation(s) |
31350899, 34168324 |
| Submission date |
Jun 25, 2018 |
| Last update date |
Aug 17, 2021 |
| Contact name |
Filippo M. Cernilogar |
| E-mail(s) |
filippo.cernilogar@med.uni-muenchen.de
|
| Organization name |
LMU Munich
|
| Department |
Biomedical Center
|
| Street address |
Grosshaderner Strasse 9
|
| City |
Planegg-Martinsried |
| ZIP/Postal code |
82152 |
| Country |
Germany |
| |
|
| Platforms (1) |
| GPL18480 |
Illumina HiSeq 1500 (Mus musculus) |
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| Samples (14)
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| This SubSeries is part of SuperSeries: |
| GSE116262 |
Pre-marked chromatin and transcription factor co-binding shape the pioneering activity of Foxa2 |
|
| Relations |
| BioProject |
PRJNA477893 |
| SRA |
SRP151325 |
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