PMID- 35444958 OWN - NLM STAT- MEDLINE DCOM- 20220422 LR - 20220716 IS - 2235-2988 (Electronic) IS - 2235-2988 (Linking) VI - 12 DP - 2022 TI - Monitoring Autophagy at Cellular and Molecular Level in Crassostrea gigas During an Experimental Ostreid Herpesvirus 1 (OsHV-1) Infection. PG - 858311 LID - 10.3389/fcimb.2022.858311 [doi] LID - 858311 AB - Mortality outbreaks of young Pacific oysters, Crassostrea gigas, have seriously affected the oyster-farming economy in several countries around the world. Although the causes of these mortality outbreaks appear complex, a viral agent has been identified as the main factor: a herpesvirus called ostreid herpesvirus 1 (OsHV-1). Autophagy is an important degradation pathway involved in the response to several pathologies including viral diseases. In C. gigas, recent studies indicate that this pathway is conserved and functional in at least haemocytes and the mantle. Furthermore, an experimental infection in combination with compounds known to inhibit or induce autophagy in mammals revealed that autophagy is involved in the response to OsHV-1 infection. In light of these results, the aim of this study was to determine the role of autophagy in the response of the Pacific oyster to infection by virus OsHV-1. For this purpose, an experimental infection in combination with a modulator of autophagy was performed on Pacific oysters known to have intermediate susceptibility to OsHV-1 infection. In haemolymph and the mantle, the autophagy response was monitored by flow cytometry, western blotting, and real-time PCR. At the same time, viral infection was evaluated by quantifying viral DNA and RNA amounts by real-time PCR. Although the results showed activation of autophagy in haemolymph and the mantle 14 hours post infection (after viral replication was initiated), they were also indicative of different regulatory mechanisms of autophagy in the two tissues, thus supporting an important function of autophagy in the response to virus OsHV-1. CI - Copyright (c) 2022 Picot, Faury, Pelletier, Arzul, Chollet, Degremont, Renault and Morga. FAU - Picot, Sandy AU - Picot S AD - Ifremer, ASIM, Adaptation Sante des invertebres, La Tremblade, France. FAU - Faury, Nicole AU - Faury N AD - Ifremer, ASIM, Adaptation Sante des invertebres, La Tremblade, France. FAU - Pelletier, Camille AU - Pelletier C AD - Ifremer, ASIM, Adaptation Sante des invertebres, La Tremblade, France. FAU - Arzul, Isabelle AU - Arzul I AD - Ifremer, ASIM, Adaptation Sante des invertebres, La Tremblade, France. FAU - Chollet, Bruno AU - Chollet B AD - Ifremer, ASIM, Adaptation Sante des invertebres, La Tremblade, France. FAU - Degremont, Lionel AU - Degremont L AD - Ifremer, ASIM, Adaptation Sante des invertebres, La Tremblade, France. FAU - Renault, Tristan AU - Renault T AD - Ifremer, Departement Ressources Biologiques et Environnement, La Tremblade, France. FAU - Morga, Benjamin AU - Morga B AD - Ifremer, ASIM, Adaptation Sante des invertebres, La Tremblade, France. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220404 PL - Switzerland TA - Front Cell Infect Microbiol JT - Frontiers in cellular and infection microbiology JID - 101585359 RN - 0 (DNA, Viral) RN - Ostreid herpesvirus 1 SB - IM MH - Animals MH - Autophagy MH - *Crassostrea/genetics/metabolism MH - DNA Viruses MH - DNA, Viral/analysis MH - *Herpesviridae MH - Mammals/genetics MH - *Virus Diseases PMC - PMC9014014 OTO - NOTNLM OT - Pacific oyster (Crassostrea gigas) OT - autophagy OT - herpesvirus OT - innate immunity OT - invertebrate COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2022/04/22 06:00 MHDA- 2022/04/23 06:00 PMCR- 2022/01/01 CRDT- 2022/04/21 05:45 PHST- 2022/01/19 00:00 [received] PHST- 2022/03/01 00:00 [accepted] PHST- 2022/04/21 05:45 [entrez] PHST- 2022/04/22 06:00 [pubmed] PHST- 2022/04/23 06:00 [medline] PHST- 2022/01/01 00:00 [pmc-release] AID - 10.3389/fcimb.2022.858311 [doi] PST - epublish SO - Front Cell Infect Microbiol. 2022 Apr 4;12:858311. doi: 10.3389/fcimb.2022.858311. eCollection 2022.