Wang, Y.* ; Li, G.* ; Chen, B.* ; Shakir, G.* ; Volz, M.* ; van der Vorst, E.P.C.* ; Maas, S.L.* ; Geiger, M.* ; Jethwa, C.* ; Bartelt, A. ; Li, Z.* ; Wettich, J.* ; Sachs, N.* ; Maegdefessel, L.* ; Nazari Jahantigh, M.* ; Hristov, M.* ; Lacy, M.* ; Lutz, B.* ; Weber, C.* ; Herzig, S. ; Guillamat Prats, R.* ; Steffens, S.*
     
 
    
        
Myeloid cannabinoid CB1 receptor deletion confers atheroprotection in male mice by reducing macrophage proliferation in a sex-dependent manner.
    
    
        
    
    
        
        Cardiovasc. Res. 120, 1411-1426 (2024)
    
    
    
		
		
			
				AIMS: Although the cannabinoid CB1 receptor has been implicated in atherosclerosis, its cell-specific effects in this disease are not well understood. To address this, we generated a transgenic mouse model to study the role of myeloid CB1 signaling in atherosclerosis. METHODS AND RESULTS: Here, we report that male mice with myeloid-specific Cnr1 deficiency on atherogenic background developed smaller lesions and necrotic cores than controls, while only minor genotype differences were observed in females. Male Cnr1 deficient mice showed reduced arterial monocyte recruitment and macrophage proliferation with less inflammatory phenotype. The sex-specific differences in proliferation were dependent on estrogen receptor (ER)α-estradiol signaling. Kinase activity profiling identified a CB1-dependent regulation of p53 and cyclin-dependent kinases. Transcriptomic profiling further revealed chromatin modifications, mRNA processing and mitochondrial respiration among the key processes affected by CB1 signaling, which was supported by metabolic flux assays. Chronic administration of the peripherally-restricted CB1 antagonist JD5037 inhibited plaque progression and macrophage proliferation, but only in male mice. Finally, CNR1 expression was detectable in human carotid endarterectomy plaques and inversely correlated with proliferation, oxidative metabolism and inflammatory markers, suggesting a possible implication of CB1-dependent regulation in human pathophysiology. CONCLUSION: Impaired macrophage CB1 signaling is atheroprotective by limiting their arterial recruitment, proliferation and inflammatory reprogramming in male mice. The importance of macrophage CB1 signaling appears to be sex-dependent.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
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        Herausgeber
        
    
    
        Schlagwörter
        Cannabinoid CB1 receptor; Macrophage; Proliferation; p53; Oestrogen receptor alpha; Activated Endocannabinoid System; Muscle-cell-proliferation; Atherosclerosis; P53; Accumulation; Dysfunction; Blockade
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2024
    
 
    
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        0
    
 
    
        HGF-Berichtsjahr
        2024
    
 
    
    
        ISSN (print) / ISBN
        0008-6363
    
 
    
        e-ISSN
        1755-3245
    
 
    
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	    Band: 120,  
	    Heft: 12,  
	    Seiten: 1411-1426 
	    Artikelnummer: ,  
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            Oxford University Press
        
 
        
            Verlagsort
            Great Clarendon St, Oxford Ox2 6dp, England
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        90000 - German Center for Diabetes Research
    
 
    
        Forschungsfeld(er)
        Helmholtz Diabetes Center
    
 
    
        PSP-Element(e)
        G-501900-251
    
 
    
        Förderungen
        Chinese Scholar Council
Federal Ministry of Education and Research (BMBF)
LMU Medical Faculty FoeFoLe program
Interdisciplinary Center for Clinical Research within the faculty of Medicine at the RWTH Aachen University
Fritz Thyssen Stiftung
Deutsche Forschungsgemeinschaft
    
 
    
        Copyright
        
    
 	
    
    
    
    
    
        Erfassungsdatum
        2024-06-18