FN Archimer Export Format PT J TI A Sustained Immune Response Supports Long-Term Antiviral Immune Priming in the Pacific Oyster, Crassostrea gigas BT AF Lafont, Maxime Vergnes, Agnes Vidal-Dupiol, Jeremie de Lorgeril, Julien Gueguen, Yannick Haffner, Philippe Petton, Bruno Chaparro, Cristian Barrachina, Celia Destoumieux-Garzon, Delphine Mitta, Guillaume Gourbal, Benjamin Montagnani, Caroline AS 1:1,2;2:1;3:1;4:1;5:1;6:1;7:3;8:2;9:5;10:1;11:2;12:2;13:1; FF 1:;2:PDG-RBE-IHPE;3:PDG-RBE-IHPE;4:PDG-RBE-IHPE;5:PDG-RBE-IHPE;6:PDG-RBE-IHPE;7:PDG-RBE-PFOM-LPI;8:;9:;10:;11:;12:;13:PDG-RBE-IHPE; C1 IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, Montpellier, France IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, Perpignan, France Ifremer, LEMAR UMR6539, Argenton-en-Landunvez, France MGX, Biocampus Montpellier, CNRS, INSERM, University of Montpellier, Montpellier, France IHPE, University of Montpellier, CNRS, Ifremer, University of Perpignan Via Domitia, Montpellier, France C2 IFREMER, FRANCE UNIV PERPIGNAN, FRANCE IFREMER, FRANCE CNRS, FRANCE CNRS, FRANCE SI MONTPELLIER ARGENTON SE PDG-RBE-IHPE PDG-RBE-PFOM-LPI UM LEMAR IHPE IN WOS Ifremer UMR WOS Cotutelle UMR DOAJ copubli-france copubli-univ-france IF 7.867 TC 48 UR https://archimer.ifremer.fr/doc/00614/72580/71541.pdf https://archimer.ifremer.fr/doc/00614/72580/71542.xlsx https://archimer.ifremer.fr/doc/00614/72580/71543.tif https://archimer.ifremer.fr/doc/00614/72580/71544.tif https://archimer.ifremer.fr/doc/00614/72580/71545.xlsx https://archimer.ifremer.fr/doc/00614/72580/71546.xlsx https://archimer.ifremer.fr/doc/00614/72580/71547.eps https://archimer.ifremer.fr/doc/00614/72580/71548.xlsx https://archimer.ifremer.fr/doc/00614/72580/71549.xlsx https://archimer.ifremer.fr/doc/00614/72580/71550.tif https://archimer.ifremer.fr/doc/00614/72580/71551.tif LA English DT Article DE ;innate immunity;priming;OsHV-1;antiviral response;immune memory;oyster;POMS;poly(I-C);interferon;transcriptomic AB Over the last decade, innate immune priming has been evidenced in many invertebrate phyla. If mechanistic models have been proposed, molecular studies aiming to substantiate these models have remained scarce. We reveal here the transcriptional signature associated with immune priming in the oyster Crassostrea gigas. Oysters were fully protected against Ostreid herpesvirus 1 (OsHV-1), a major oyster pathogen, after priming with poly(I·C), which mimics viral double-stranded RNA. Global analysis through RNA sequencing of oyster and viral genes after immune priming and viral infection revealed that poly(I·C) induces a strong antiviral response that impairs OsHV-1 replication. Protection is based on a sustained upregulation of immune genes, notably genes involved in the interferon pathway and apoptosis, which control subsequent viral infection. This persistent antiviral alert state remains active over 4 months and supports antiviral protection in the long term. This acquired resistance mechanism reinforces the molecular foundations of the sustained response model of immune priming. It further opens the way to applications (pseudovaccination) to cope with a recurrent disease that causes dramatic economic losses in the shellfish farming industry worldwide. PY 2020 PD MAR SO Mbio SN 2150-7511 PU American Society for Microbiology VL 11 IS 2 UT 000531071300058 DI 10.1128/mBio.02777-19 ID 72580 ER EF