Ogrinc Wagner, A.* ; Friedrich, V.* ; Barthels, C.* ; Marconi, P.* ; Blutke, A. ; Brombacher, F.* ; Brocker, T.*
     
 
    
        
Strain specific maturation of Dendritic cells and production of IL-1β controls CD40-driven colitis.
    
    
        
    
    
        
        PLoS ONE 14:e0210998 (2019)
    
    
    
		
		
			
				Intestinal integrity is maintained by balanced numbers of CD103(+) Dendritic cells (DCs), which generate peripherally induced regulatory T cells (iTregs). We have developed a mouse model where DC-specific constitutive CD40 signals caused a strong reduction of CD103(+) DCs in the lamina propria (LP) and intestinal lymph nodes (LN). As a consequence, also iTregs were strongly reduced and transgenic mice on the C57Bl/6-background (B6) developed fatal colitis. Here we describe that transgenic mice on a pure Balb/c-background (B/c) do not show any pathologies, while transgenic C57Bl/6 x Balb/c (F1) mice develop weak colon inflammation, without fatal colitis. This graded pathology correlated with the effects of CD40-signalling on DCs in each background, with striking loss of CD103(+) DCs in B6, but reduced in F1 and diminished in B/c background. We further show direct correlation of CD103(+) DC-numbers with numbers of iTregs, the frequencies of which behave correspondingly. Striking effects on B6-DCs reflected robust loss of surface MHCII, known to be crucial for iTreg induction. Furthermore, elevated levels of IL-23 together with IL-1, found only in B6 mice, support generation of intestinal IFN-gamma(+) IL-17(+) Th17 cells and IFN-gamma(+) Th1 cells, responsible for onset of disease. Together, this demonstrates a novel aspect of colitis-control, depending on genetic background. Moreover, strain-specific environmental sensing might alter the CD103(+) DC/iTreg-axis to tip intestinal homeostatic balance to pathology.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Regulatory T-cells; Inflammatory-bowel-disease; Soluble Cd40 Ligand; Transcription-factor; Tgf-beta; Intestinal Inflammation; Signaling Controls; Cd103(+) Dcs; Th1 Cells; Reg-cells
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2019
    
 
    
        Prepublished im Jahr 
        
    
 
    
        HGF-Berichtsjahr
        2019
    
 
    
    
        ISSN (print) / ISBN
        1932-6203
    
 
    
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	    Band: 14,  
	    Heft: 1,  
	    Seiten: ,  
	    Artikelnummer: e0210998 
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Public Library of Science (PLoS)
        
 
        
            Verlagsort
            Lawrence, Kan.
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30205 - Bioengineering and Digital Health
30505 - New Technologies for Biomedical Discoveries
    
 
    
        Forschungsfeld(er)
        Enabling and Novel Technologies
    
 
    
        PSP-Element(e)
        G-500390-001
A-630600-001
    
 
    
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        Erfassungsdatum
        2019-03-07