Howes, A.* ; O'Sullivan, P.A.* ; Breyer, F.* ; Ghose, A.* ; Cao, L.* ; Krappmann, D. ; Bowcock, A.M.* ; Ley, S.C.*
     
 
    
        
Psoriasis mutations disrupt CARD14 autoinhibition promoting BCL10-MALT1-dependent NF-κB activation.
    
    
        
    
    
        
        Biochem. J. 473, 1759-1768 (2016)
    
    
    
		
		
			
				Inherited and de novo mutations in the CARD14 gene promote the development of psoriasis, an inflammatory disease of the skin. CARD14 is a member of the CARMA protein family that includes the structurally related CARD11 adaptor that mediates NF-κB activation by antigen receptors. We investigated the mechanism by which CARD14 mutation in psoriasis activates NF-κB. In contrast to wild type CARD14, CARD14(E138A)and CARD14(G117S)psoriasis mutants interacted constitutively with BCL10 and MALT1, and triggered BCL10 and MALT1 dependent activation of NF-κB in keratinocytes. These alterations disrupted the inhibitory effect of the CARD14 linker region on NF-κB activation by facilitating BCL10 binding. Therefore, psoriasis mutations activated CARD14 by a mechanism analogous to oncogenic CARD11 mutations in non-Hodgkin B cell lymphomas. CARD14(E138A)also stimulated MALT1 paracaspase activity and activated both ERK1/2 and p38α MAP kinases. Inhibition of MALT1 with mepazine reduced CARD14(E138A)-induced expression of specific psoriasis-associated transcripts in keratinocytes. Our results establish the mechanism whereby gain-of-function CARD14 variants, which induce psoriatic disease in affected individuals, activate pro-inflammatory signaling.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Card14 ; Malt1 ; Keratinocytes ; Nuclear Factor Kappab ; Psoriasis; Responsive Inhibitory Domain; Innate Immunity; Arthritis; Malt1; Phosphorylation; Identification; Regnase-1; Proteins; Cleavage; Bcl10
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2016
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2016
    
 
    
    
        ISSN (print) / ISBN
        0264-6021
    
 
    
        e-ISSN
        1470-8728
    
 
    
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	    Band: 473,  
	    Heft: 12,  
	    Seiten: 1759-1768 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Portland Press
        
 
        
            Verlagsort
            London
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
    
        Institut(e)
        Research Unit Signaling and Translation (SAT)
    
 
    
        POF Topic(s)
        30203 - Molecular Targets and Therapies
    
 
    
        Forschungsfeld(er)
        Enabling and Novel Technologies
    
 
    
        PSP-Element(e)
        G-509800-002
    
 
    
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        Erfassungsdatum
        2016-04-18