Social exclusion changes histone modifications H3K4me3 and H3K27ac in liver tissue of wild house mice.
    
    
        
    
    
        
        PLoS ONE 10:e0133988 (2015)
    
    
    
      
      
	
	    Wild house mice form social hierarchies with aggressive males defending territories, in which females, young mice and submissive adult males share nests. In contrast, socially excluded males are barred from breeding groups, have numerous bite wounds and patches of thinning fur. Since their feeding times are often disrupted, we investigated whether social exclusion leads to changes in epigenetic marks of metabolic genes in liver tissue. We used chromatin immunoprecipitation and quantitative PCR to measure enrichment of two activating histone marks at 15 candidate loci. The epigenetic profiles of healthy males sampled from nest boxes differed significantly from the profiles of ostracized males caught outside of nests and showing bite wounds indicative of social exclusion. Enrichment of histone-3 lysine-4 trimethylation (H3K4me3) changed significantly at genes Cyp4a14, Gapdh, Nr3c1, Pck1, Ppara, and Sqle. Changes at histone-3 lysine-27 acetylation (H3K27ac) marks were detected at genes Fasn, Nr3c1, and Plin5. A principal components analysis separated the socialized from the ostracized mice. This was independent of body weight for the H3K4me3 mark, and partially dependent for H3K27ac. There was no separation, however, between healthy males that had been sampled from two different nests. A hierarchical cluster analysis also separated the two phenotypes, which was independent of body weight for both markers. Our study shows that a period of social exclusion during adult life leads to quantitative changes in histone modification patterns in mouse liver tissue. Similar epigenetic changes might occur during the development of stress-induced metabolic disorders in humans.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Posttraumatic-stress-disorder; Mus-musculus-domesticus; Gene-expression; Human Genome; Early-life; Glucocorticoid-receptor; Natural-populations; Territory Formation; Metabolic Disease; Super-enhancers
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2015
    
 
    
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        HGF-reported in Year
        2015
    
 
    
    
        ISSN (print) / ISBN
        1932-6203
    
 
    
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	    Volume: 10,  
	    Issue: 8,  
	    Pages: ,  
	    Article Number: e0133988 
	    Supplement: ,  
	
    
 
    
        
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            Publisher
            Public Library of Science (PLoS)
        
 
        
            Publishing Place
            Lawrence, Kan.
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        30205 - Bioengineering and Digital Health
    
 
    
        Research field(s)
        Enabling and Novel Technologies
    
 
    
        PSP Element(s)
        G-503800-001
    
 
    
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        Erfassungsdatum
        2015-08-14