Intracellular lipid droplets are exploited by Junín virus in a nucleoprotein-dependent process.
J Cell Sci
; 137(19)2024 Oct 01.
Article
en En
| MEDLINE
| ID: mdl-39292070
ABSTRACT
Lipid droplets (LDs) are organelles involved in lipid storage, maintenance of energy homeostasis, protein sequestration, signaling events and inter-organelle interactions. Recently, LDs have been shown to favor the replication of members from different viral families, such as the Flaviviridae and Coronaviridae. In this work, we show that LDs are essential organelles for members of the Arenaviridae family. A virus-driven reduction of LD number was observed in cultures infected with Junín mammarenavirus (JUNV), caused in part by action of the viral nucleoprotein. Notably, we identified a new pool of nucleoprotein and viral RNA that localizes in the vicinity of LDs, suggesting that LDs play a role during the viral replication cycle. Regarding the mechanism behind LD exhaustion, we found evidence that lipophagy is involved in LD degradation with the resulting fatty acids being substrates of fatty acid ß-oxidation, which fuels viral multiplication. This work highlights the importance of LDs during the replication cycle of JUNV, contributing to the knowledge of the metabolic changes these mammarenaviruses cause in their hosts.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Replicación Viral
/
Virus Junin
/
Gotas Lipídicas
/
Nucleoproteínas
Límite:
Animals
/
Humans
Idioma:
En
Revista:
J Cell Sci
Año:
2024
Tipo del documento:
Article
Pais de publicación:
Reino Unido