He, B. et al. (2023) In vivo imaging sheds light on the susceptibility and permissivity of Carassius auratus to Cyprinid herpesvirus 2 according to developmental stage. Viruses, 15(8), 1746. (doi: 10.3390/v15081746) (PMID:37632088) (PMCID:PMC10459324)
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Abstract
Cyprinid herpesvirus 2 (CyHV-2) is a virus that causes mass mortality in economically important Carassius spp. However, there have been no comprehensive studies into host susceptibility or permissivity with respect to developmental stage, and the major portal of viral entry into the host is still unclear. To help bridge these knowledge gaps, we developed the first ever recombinant strain of CyHV-2 expressing bioluminescent and fluorescent reporter genes. Infection of Carassius auratus hosts with this recombinant by immersion facilitated the exploitation of various in vivo imaging techniques to establish the spatiotemporal aspects of CyHV-2 replication at larval, juvenile, and adult developmental stages. While less susceptible than later developmental stages, larvae were most permissive to CyHV-2 replication, leading to rapid systemic infection and high mortality. Permissivity to CyHV-2 decreased with advancing development, with adults being the least permissive and, thus, also exhibiting the least mortality. Across all developmental stages, the skin was the most susceptible and permissive organ to infection at the earliest sampling points post-infection, indicating that it represents the major portal of entry into these hosts. Collectively these findings provide important fundamental insights into CyHV-2 pathogenesis and epidemiology in Carassius auratus with high relevance to other related economically important virus-host models.
| Item Type: | Articles |
|---|---|
| Additional Information: | This work was supported by the University of Liège (FSR-SS-2022/64, FSR-SS-2023/49), the FNRS (PDR T.0241.19), the European Maritime and Fisheries Fund (Eel4ever project), the Welbio (WELBIO-CR-2022 A-14 12), the Walloon Region (ERANets NucNanoFish 2010052) and the Medical Research Council (MC_UU_12014/3). Computational resources have been provided by the Consortium des Équipements de Calcul Intensif (CÉCI), funded by the F.R.S.-FNRS under Grant No. 2.5020.11 and by the Walloon Region. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Davison, Professor Andrew |
| Creator Roles: | |
| Authors: | He, B., Sridhar, A., Streiff, C., Deketelaere, C., Zhang, H., Gao, Y., Hu, Y., Pirotte, S., Delrez, N., Davison, A. J., Donohoe, O., and Vanderplasschen, A. F.C. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Infection & Immunity |
| Journal Name: | Viruses |
| Publisher: | MDPI |
| ISSN: | 1999-4915 |
| ISSN (Online): | 1999-4915 |
| Published Online: | 15 August 2023 |
| Copyright Holders: | Copyright © 2023 The Authors |
| First Published: | First published in Viruses 15(8):1746 |
| Publisher Policy: | Reproduced under a Creative Commons licence |
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