Autophagy induced by infectious hematopoietic necrosis virus inhibits intracellular viral replication and extracellular viral yields in epithelioma papulosum cyprini cell line.

Abstract:

:Infectious hematopoietic necrosis virus (IHNV) is a common pathogen that causes severe disease in the salmonid aquaculture industry. Recent work demonstrated that autophagy plays an important role in pathogen invasion by activating innate and adaptive immunity. This study investigated the relationship between IHNV and autophagy in epithelioma papulosum cyprini cells. The electron microscopy results show that IHNV infection can induce typical autophagosomes which are representative structures of autophagy activation. The punctate accumulation of green fluorescence-tagged microtubule-associate protein 1 light chain 3 (LC3) and the protein conversion from LC3-I to LC3-II were respectively confirmed by confocal fluorescence microscopy and western blotting. Furthermore, the effects of autophagy on IHNV replication were also clarified by altering the autophagy pathway. The results showed that rapamycin induced autophagy can inhibit both intracellular viral replication and extracellular viral yields, while autophagy inhibitor produced the opposite results. These findings demonstrated that autophagy plays an antiviral role during IHNV infection.

journal_name

Dev Comp Immunol

authors

Zhao JZ,Xu LM,Liu M,Zhang ZY,Yin JS,Liu HB,Lu TY

doi

10.1016/j.dci.2017.07.025

subject

Has Abstract

pub_date

2017-12-01 00:00:00

pages

88-94

eissn

0145-305X

issn

1879-0089

pii

S0145-305X(17)30351-8

journal_volume

77

pub_type

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