MAVS O-GlcNAcylation Is Essential for Host Antiviral Immunity against Lethal RNA Viruses.
Cell Rep
; 28(9): 2386-2396.e5, 2019 08 27.
Article
en En
| MEDLINE
| ID: mdl-31461653
It is known that lethal viruses profoundly manipulate host metabolism, but how the metabolism alternation affects the immediate host antiviral immunity remains elusive. Here, we report that the O-GlcNAcylation of mitochondrial antiviral-signaling protein (MAVS), a key mediator of interferon signaling, is a critical regulation to activate the host innate immunity against RNA viruses. We show that O-GlcNAcylation depletion in myeloid cells renders the host more susceptible to virus infection both in vitro and in vivo. Mechanistically, we demonstrate that MAVS O-GlcNAcylation is required for virus-induced MAVS K63-linked ubiquitination, thereby facilitating IRF3 activation and IFNß production. We further demonstrate that D-glucosamine, a commonly used dietary supplement, effectively protects mice against a range of lethal RNA viruses, including human influenza virus. Our study highlights a critical role of O-GlcNAcylation in regulating host antiviral immunity and validates D-glucosamine as a potential therapeutic for virus infections.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Procesamiento Proteico-Postraduccional
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Infecciones por Orthomyxoviridae
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Proteínas Adaptadoras Transductoras de Señales
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Inmunidad Innata
Límite:
Animals
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Female
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Humans
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Male
Idioma:
En
Revista:
Cell Rep
Año:
2019
Tipo del documento:
Article
Pais de publicación:
Estados Unidos