Cernilogar, F.M.* ; Hasenöder ; Wang, Z.* ; Scheibner, K. ; Burtscher, I. ; Sterr, M. ; Smialowski, P. ; Groh, S.* ; Evenroed, I.M.* ; Gilfillan, G.D.* ; Lickert, H. ; Schotta, G.*
     
 
    
        
Pre-marked chromatin and transcription factor co-binding shape the pioneering activity of Foxa2.
    
    
        
    
    
        
        Nucleic Acids Res. 47, 9069-9086 (2019)
    
    
    
		
		
			
				Pioneer transcription factors (PTF) can recognize their binding sites on nucleosomal DNA and trigger chromatin opening for recruitment of other nonpioneer transcription factors. However, critical properties of PTFs are still poorly understood, such as how these transcription factors selectively recognize cell type-specific binding sites and under which conditions they can 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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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Dna; Endoderm; Enhancers; Specification; Hnf-3-beta; Dynamics
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2019
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2019
    
 
    
    
        ISSN (print) / ISBN
        0305-1048
    
 
    
        e-ISSN
        1362-4962
    
 
    
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	    Band: 47,  
	    Heft: 17,  
	    Seiten: 9069-9086 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Oxford University Press
        
 
        
            Verlagsort
            Great Clarendon St, Oxford Ox2 6dp, England
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30204 - Cell Programming and Repair
90000 - German Center for Diabetes Research
30201 - Metabolic Health
    
 
    
        Forschungsfeld(er)
        Stem Cell and Neuroscience
Helmholtz Diabetes Center
    
 
    
        PSP-Element(e)
        G-500800-001
G-501900-231
G-502300-001
    
 
    
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        Erfassungsdatum
        2019-08-07