Effects of whole-body adenylyl cyclase 5 (Adcy5) deficiency on systemic insulin sensitivity and adipose tissue.
    
    
        
    
    
        
        Int. J. Mol. Sci. 22:4353 (2021)
    
    
    
      
      
	
	    Genome-wide association studies have identified adenylyl cyclase type 5 (ADCY5) as candidate gene for diabetes-related quantitative traits and an increased risk of type 2 diabetes. Mice with a whole-body deletion of Adcy5 (Adcy5 ) do not develop obesity, glucose intolerance and insulin resistance, have improved cardiac function and increased longevity. Here, we investigated Adcy5 knockout mice (Adcy5 ) to test the hypothesis that changes in adipose tissue (AT) may con-tribute to the reported healthier phenotype. In contrast to previous reports, we found that deletion of Adcy5 did not confer any physiological or biochemical benefits. However, this unexpected find-ing allowed us to investigate the effects of Adcy5 depletion on AT independently of lower body weight and a metabolically healthier phenotype. Adcy5  mice exhibited an increased number of smaller adipocytes, lower mean adipocyte size and a distinct AT gene expression pattern with mid-line 1 (Mid1) as the most significantly downregulated gene compared to control mice. Our Adcy5  model challenges previously described beneficial effects of Adcy5 deficiency and suggests that targeting Adcy5 does not improve insulin sensitivity and may therefore limit the relevance of ADCY5 as potential drug target. –/– –/– –/– –/–
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Adcy5 Knockout ; Adipocyte Size ; Gene Expression ; Insulin Resistance ; Metabolism ; Running Activity; Diet-induced Obesity; Calorie Restriction; Skeletal-muscle; Life-span; Mice; Protects; Disruption; Receptor; Type-5; Homeostasis
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2021
    
 
    
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        HGF-reported in Year
        2021
    
 
    
    
        ISSN (print) / ISBN
        1661-6596
    
 
    
        e-ISSN
        1422-0067
    
 
    
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	    Volume: 22,  
	    Issue: 9,  
	    Pages: ,  
	    Article Number: 4353 
	    Supplement: ,  
	
    
 
    
        
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            MDPI
        
 
        
            Publishing Place
            Basel
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
    
        Institute(s)
        Helmholtz Institute for Metabolism, Obesity and Vascular Research (HI-MAG)
    
 
    
        POF-Topic(s)
        30201 - Metabolic Health
    
 
    
        Research field(s)
        Helmholtz Diabetes Center
    
 
    
        PSP Element(s)
        G-506501-001
G-506500-001
    
 
    
        Grants
        
Deutsche Forschungsgemeinschaft (DFG, German Research foundation)
    
 
    
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        Erfassungsdatum
        2021-04-30