IKKα controls canonical TGFß-SMAD signaling to regulate genes expressing SNAIL and SLUG during EMT in panc1 cells.
    
    
        
    
    
        
        J. Cell Sci. 123, 4231-4239 (2010)
    
    
		
		
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			Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
		
     
    
		
		
			
				The epithelial to mesenchymal transition (EMT) is a crucial step in tumor progression, and the TGFβ-SMAD signaling pathway is an inductor of EMT in many tumor types. One hallmark of EMT is downregulation of the adherens junction protein E-cadherin, a process mediated by transcription factors such as the zinc fingers SNAIL and SLUG. Here, we report that the catalytic IκB kinase (IKK) subunit IKKα is necessary for the silencing of E-cadherin in a Panc1 cell model of TGFβ-SMAD-mediated EMT, independently of NFκB. IKKα regulates canonical TGFβ-SMAD signaling by interacting with SMAD3 and controlling SMAD complex formation on DNA. Furthermore, we demonstrate that the TGFβ-IKKα-SMAD signaling pathway induces transcription of the genes encoding SNAIL and SLUG. In addition, we demonstrate that IKKα also modulates canonical TGFβ-SMAD signaling in human MDA-MB231 breast cancer cells, arguing for a more general impact of IKKα on the control of TGFβ-SMAD signaling. Taken together, these findings indicate that IKKα contributes to the tumor-promoting function of the TGFβ-SMAD signaling pathway in particular cancers.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        EMT, IKK, NF{kappa}B, Pancreatic cancer, SMAD, SNAIL, SLUG, TGFβ
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2010
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2010
    
 
    
    
        ISSN (print) / ISBN
        0021-9533
    
 
    
        e-ISSN
        1477-9137
    
 
    
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	    Band: 123,  
	    Heft: 24,  
	    Seiten: 4231-4239 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Company of Biologists
        
 
        
            Verlagsort
            Cambridge
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
    
        Institut(e)
        Molekulare Endokrinologie und Metabolismus (MEM)
    
 
    
        POF Topic(s)
        30201 - Metabolic Health
    
 
    
        Forschungsfeld(er)
        Genetics and Epidemiology
    
 
    
        PSP-Element(e)
        G-505600-001
    
 
    
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        Erfassungsdatum
        2010-12-23