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
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2023
Prepublished im Jahr
0
HGF-Berichtsjahr
2023
ISSN (print) / ISBN
0027-8424
e-ISSN
1091-6490
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 120,
Heft: 34,
Seiten: ,
Artikelnummer: e2211281120
Supplement: ,
Reihe
Verlag
National Academy of Sciences
Verlagsort
2101 Constitution Ave Nw, Washington, Dc 20418 Usa
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
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Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
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