Viral reprogramming by nervous necrosis virus alters key metabolites and its pathways in sevenband grouper (Hyporthodus septemfasciatus) gills.

Autor: Rajendran R; Department of Aqualife Medicine, Chonnam National University, Yeosu, 50626, Republic of Korea., Krishnan R; Department of Aquatic Animal Health Management, Kerala University of Fisheries and Ocean Studies, Kerala, 682506, India., Oh MJ; Department of Aqualife Medicine, Chonnam National University, Yeosu, 50626, Republic of Korea. Electronic address: ohmj@jnu.ac.kr.
Jazyk: angličtina
Zdroj: Fish & shellfish immunology [Fish Shellfish Immunol] 2024 Nov; Vol. 154, pp. 109900. Date of Electronic Publication: 2024 Sep 10.
DOI: 10.1016/j.fsi.2024.109900
Abstrakt: Nervous necrosis virus (NNV) which mainly infects sevenband grouper (Hyporthodus Septemfasciatus) is considered a potential threat to the grouper aquaculture industry. The gills being one of the portal of entry and an active site of replication of fish viruses emphasises its role as a key region to study the metabolomic changes caused by viral reprograming and hijacking of metabolic pathways associated with immunity of the host. In the present study, liquid chromatography mass spectrometry (LC-MS) was used to detect changes of endogenous compounds of the grouper after NNV infection. A total of 75 metabolites of ten different pathways were identified. The metabolites were mainly associated with fatty acids, lipids, amino acids and nucleotides. The virus reprogramming lead to the downregulation of majority of the metabolites in their pathways. Arachidonic acid (AA), tryptophan, kynurenine and methandriol were selected as representative metabolites and challenge studies with NNV confirmed the fact that, metabolites controlled the replication of virus in a dose dependent manner. Immune gene expression studies also confirmed the effect of metabolites by upregulated expression of interleukins, cytokines and TLRs which are part of cellular immune response. This study shows the viral reprogramming of NNV in grouper gill cells resulting in alterations in basic metabolic pathways associated with normal functioning of the organism.
(Copyright © 2024 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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