Endosomes and Microtubles are Required for Productive Infection in Aquareovirus.
Virol Sin
; 35(2): 200-211, 2020 Apr.
Article
em En
| MEDLINE
| ID: mdl-31858455
ABSTRACT
Grass carp reovirus (GCRV), the genus Aquareovirus in family Reoviridae, is viewed as the most pathogenic aquareovirus. To understand the molecular mechanism of how aquareovirus initiates productive infection, the roles of endosome and microtubule in cell entry of GCRV are investigated by using quantum dots (QDs)-tracking in combination with biochemical approaches. We found that GCRV infection and viral protein synthesis were significantly inhibited by pretreating host cells with endosome acidification inhibitors NH4Cl, chloroquine and bafilomycin A1 (Bafi). Confocal images indicated that GCRV particles could colocalize with Rab5, Rab7 and lysosomes in host cells. Further ultrastructural examination validated that viral particle was found in late endosomes. Moreover, disruption of microtubules with nocodazole clearly blocked GCRV entry, while no inhibitory effects were observed with cytochalasin D treated cells in viral infection, hinting that intracellular transportation of endocytic uptake in GCRV infected cells is via microtubules but not actin filament. Notably, viral particles were observed to transport along microtubules by using QD-labeled GCRV. Altogether, our results suggest that GCRV can use endosomes and microtubules to initiate productive infection.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Endossomos
/
Reoviridae
/
Carpas
/
Infecções por Reoviridae
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Internalização do Vírus
/
Microtúbulos
Limite:
Animals
Idioma:
En
Revista:
Virol Sin
Assunto da revista:
VIROLOGIA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
China