FN Archimer Export Format PT J TI Potential of fascaplysin and palauolide from Fascaplysinopsis cf reticulata to reduce the risk of bacterial infection in fish farming BT AF Mai, Tepoerau Toullec, Jordan Van Wynsberge, Simon Besson, Marc Soulet, Stephanie Petek, Sylvain Aliotti, Emmanuelle Ekins, Merrick Hall, Kathryn Erpenbeck, Dirk Lecchini, David Beniddir, Mehdi A. SAULNIER, Denis Debitus, Cecile AS 1:1;2:11;3:1,3,4;4:5,6;5:12;6:13;7:13;8:7,8;9:7;10:9;11:5;12:10;13:1;14:13; FF 1:PDG-RBE-LEADNC;2:;3:PDG-RBE-LEADNC;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:PDG-RBE-RMPF;14:; C1 EIO, ILM, IFREMER, IRD, UPF, BP 6570, 98702 FAA’A, Tahiti, French Polynesia IRD, Univ. Brest, CNRS, IFREMER, LEMAR, F-29280 Plouzane, France Institut de Recherche pour le Développement, UMR 9220 ENTROPIE (Institut de Recherche Pour le Développement, Université de la Réunion, Centre National de la Recherche Scientifique), Nouméa, New Caledonia LEAD-NC, 98848 Nouméa, New Caledonia PSL Research University: EPHE-UPVD-CNRS, USR 3278 CRIOBE, BP 1013-Moorea, French Polynesia Observatoire Océanologique de Banyuls-sur-Mer, Université Pierre et Marie Curie Paris, Banyuls-sur-Mer, France Queensland Museum, PO Box 3300, South Brisbane BC, Queensland 4101, Australia School of Biological Sciences, University of Queensland, St Lucia, Queensland, 4072, Australia Department of Earth and Environmental Sciences & GeoBio-Center, Ludwig-Maximilians-Universität München, Richard-Wagner Str. 10, 80333 Munich, Germany Biocis, Equipe “Pharmacognosie-Chimie des substances naturelles”, CNRS, Université de Paris Sus, Univ. Paris-Saclay, Faculté de pharmacie, 5 rue J-B Clément, 92293 Châtenay-Malabry cedex, France EIO, ILM, IFREMER, IRD, UPF, BP 6570, 98702 FAA’A, Tahiti, French Polynesia EIO, ILM, IFREMER, IRD, UPF, BP 6570, 98702 FAA’A, Tahiti, French Polynesia EIO, ILM, IFREMER, IRD, UPF, BP 6570, 98702 FAA’A, Tahiti, French Polynesia C2 IFREMER, FRANCE IRD, FRANCE IRD, FRANCE IFREMER, FRANCE EPHE, FRANCE UNIV PARIS 06, FRANCE QUEENSLAND MUSEUM, AUSTRALIA UNIV QUEENSLAND, AUSTRALIA UNIV MUNCHEN, GERMANY UNIV PARIS SACLAY, FRANCE UBO, FRANCE UNIV POLYNESIE FRANCAISE, FRANCE IRD, FRANCE SI NOUMEA BREST TAHITI SE PDG-RBE-LEADNC PDG-RBE-PFOM IRD PDG-RBE-RMPF UM LEMAR EIO IN DOAJ TC 0 UR https://archimer.ifremer.fr/doc/00598/71052/69366.pdf LA English DT Article CR TUAM 2011 BO Alis DE ;Porifera;Marine natural products;Quorum sensing inhibitors;Antibiotic;Fascaplysinopsis cf reticulata AB Marine natural products isolated from the sponge Fascaplysinopsis cf reticulata, in French Polynesia, were investigated as an alternative to antibiotics to control pathogens in aquaculture. The overuse of antibiotics in aquaculture is largely considered to be an environmental pollution, because it supports the transfer of antibiotic resistance genes within the aquatic environment. One environmentally friendly alternative to antibiotics is the use of quorum sensing inhibitors (QSIs). Quorum sensing (QS) is a regulatory mechanism in bacteria which control virulence factors through the secretion of autoinducers (AIs), such as acyl-homoserine lactone (AHL) in gram-negative bacteria. Vibrio harveyi QS is controlled through three parallel pathways: HAI-1, AI-2, and CAI-1. Bioassay-guided purification of F. cf reticulata extract was conducted on two bacterial species, i.e., Tenacibaculum maritimum and V. harveyi for antibiotic and QS inhibition bioactivities. Toxicity bioassay of fractions was also evaluated on the freshwater fish Poecilia reticulata and the marine fish Acanthurus triostegus. Cyclohexanic and dichloromethane fractions of F. cf reticulata exhibited QS inhibition on V. harveyi and antibiotic bioactivities on V. harveyi and T. maritimum, respectively. Palauolide (1) and fascaplysin (2) were purified as major molecules from the cyclohexanic and dichloromethane fractions, respectively. Palauolide inhibited QS of V. harveyi through HAI-1 QS pathway at 50 μg ml–1 (26 μM), while fascaplysin affected the bacterial growth of V. harveyi (50 μg ml–1) and T. maritimum (0.25 μg). The toxicity of fascaplysin-enriched fraction (FEF) was evaluated and exhibited a toxic effect against fish at 50 μg ml–1. This study demonstrated for the first time the QSI potential of palauolide (1). Future research may assess the toxicity of both the cyclohexanic fraction of the sponge and palauolide (1) on fish, to confirm their potential as alternative to antibiotics in fish farming. PY 2019 PD DEC SO Fisheries and Aquatic Sciences SN 2234-1757 PU Springer Science and Business Media LLC VL 22 IS 1 DI 10.1186/s41240-019-0145-0 ID 71052 ER EF