Pena-Francesch, M.* ; Vanoaica, L.D.* ; Zhu, G.F.* ; Stumpe, M.* ; Sankar, D.S.* ; Nowag, H.* ; Valencia-Camargo, A.D.* ; Hammerschmidt, W. ; Dengjel, J.* ; Ligeon, L.A.* ; Münz, C.*
     
 
    
        
The autophagy machinery interacts with EBV capsids during viral envelope release.
    
    
        
    
    
        
        Proc. Natl. Acad. Sci. U.S.A. 120:e2211281120 (2023)
    
    
    
		
		
			
				Autophagy serves as a defense mechanism against intracellular pathogens, but several microorganisms exploit it for their own benefit. Accordingly, certain herpesviruses include autophagic membranes into their infectious virus particles. In this study, we analyzed the composition of purified virions of the Epstein-Barr virus (EBV), a common oncogenic γ-herpesvirus. In these, we found several components of the autophagy machinery, including membrane-associated LC3B-II, and numerous viral proteins, such as the capsid assembly proteins BVRF2 and BdRF1. Additionally, we showed that BVRF2 and BdRF1 interact with LC3B-II via their common protein domain. Using an EBV mutant, we identified BVRF2 as essential to assemble mature capsids and produce infectious EBV. However, BdRF1 was sufficient for the release of noninfectious viral envelopes as long as autophagy was not compromised. These data suggest that BVRF2 and BdRF1 are not only important for capsid assembly but together with the LC3B conjugation complex of ATG5-ATG12-ATG15L1 are also critical for EBV envelope release.
			
			
				
			
		 
		
			
				
					
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        Publikationstyp
        Artikel: Journalartikel
    
 
    
        Dokumenttyp
        Wissenschaftlicher Artikel
    
 
    
        Typ der Hochschulschrift
        
    
 
    
        Herausgeber
        
    
    
        Schlagwörter
        Ebv ; Autophagy ; Viral Capsid Assembly ; Viral Envelope ; Xenophagy; Epstein-barr-virus; Extracellular Vesicles; Proteins; Replication; Infection; Blocks; Fusion; Roles; Motif; Flux
    
 
    
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        Sprache
        englisch
    
 
    
        Veröffentlichungsjahr
        2023
    
 
    
        Prepublished im Jahr 
        0
    
 
    
        HGF-Berichtsjahr
        2023
    
 
    
    
        ISSN (print) / ISBN
        0027-8424
    
 
    
        e-ISSN
        1091-6490
    
 
    
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	    Band: 120,  
	    Heft: 34,  
	    Seiten: ,  
	    Artikelnummer: e2211281120 
	    Supplement: ,  
	
    
 
  
        
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            Verlag
            National Academy of Sciences
        
 
        
            Verlagsort
            2101 Constitution Ave Nw, Washington, Dc 20418 Usa
        
 
	
        
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        Begutachtungsstatus
        Peer reviewed
    
 
     
    
        POF Topic(s)
        30203 - Molecular Targets and Therapies
    
 
    
        Forschungsfeld(er)
        Immune Response and Infection
    
 
    
        PSP-Element(e)
        G-501500-001
    
 
    
        Förderungen
        Novartis
Cancer Research Center Zurich
Swiss NSF
Vontobel Foundation
Roche
Swiss MS Society
Swiss Vaccine Research Institute
Sobek Foundation
HMZ ImmunoTargET of the University of Zurich
Cancer Research Switzerland
Forschungskredit of the University of Zurich
    
 
    
        Copyright
        
    
 	
    
    
    
    
    
        Erfassungsdatum
        2023-10-06