Activator-blocker model of transcriptional regulation by pioneer-like factors
Abstract: Zygotic genome activation (ZGA) in the development of flies, fish, frogs and mammals depends on pioneer-like transcription factors (TFs). Those TFs create open chromatin regions, promote histone acetylation on enhancers, and activate transcription. Here, we use the panel of single, double and triple mutants for zebrafish genome activators Pou5f3, Sox19b and Nanog, multi-omics and mathematical modeling to investigate the combinatorial mechanisms of genome activation. We show that Pou5f3 and Nanog act differently on synergistic and antagonistic enhancer types. Pou5f3 and Nanog both bind as pioneer-like TFs on synergistic enhancers, promote histone acetylation and activate transcription. Antagonistic enhancers are activated by binding of one of these factors. The other TF binds as non-pioneer-like TF, competes with the activator and blocks all its effects, partially or completely. This activator-blocker mechanism mutually restricts widespread transcriptional activation by Pou5f3 and Nanog and prevents premature expression of late developmental regulators in the early embryo
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Anmerkungen
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Nature communications. - 14, 1 (2023) , 5677, ISSN: 2041-1723
- Ereignis
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Veröffentlichung
- (wo)
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Freiburg
- (wer)
-
Universität
- (wann)
-
2023
- Urheber
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Riesle, Aileen Julia
Gao, Meijiang
Rosenblatt, Marcus
Hermes, Jacques
Haß, Helge
Gebhard, Anna
Veil, Marina
Grüning, Björn
Timmer, Jens
Onichtchouk, Daria
- DOI
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10.1038/s41467-023-41507-z
- URN
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urn:nbn:de:bsz:25-freidok-2400167
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
-
25.03.2025, 13:41 MEZ
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Beteiligte
- Riesle, Aileen Julia
- Gao, Meijiang
- Rosenblatt, Marcus
- Hermes, Jacques
- Haß, Helge
- Gebhard, Anna
- Veil, Marina
- Grüning, Björn
- Timmer, Jens
- Onichtchouk, Daria
- Universität
Entstanden
- 2023
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