PMID- 24931626 OWN - NLM STAT- MEDLINE DCOM- 20150309 LR - 20140714 IS - 1095-9947 (Electronic) IS - 1050-4648 (Linking) VI - 39 IP - 2 DP - 2014 Aug TI - In vitro antibacterial analysis of phenoloxidase reaction products from the sea cucumber Apostichopus japonicus. PG - 458-63 LID - S1050-4648(14)00201-0 [pii] LID - 10.1016/j.fsi.2014.06.002 [doi] AB - Three phenoloxidases (POs) of Apostichopus japonicus, AjPOs (AjPO1, AjPO2 and AjPO3), were partially purified from the coelomocytes with an electrophoretic method, and then employed for the in vitro antibacterial analysis. Using L-3,4-dihydroxyphenylalanine (L-DOPA) as a substrate, AjPO1 and AjPO2-derived compounds inhibited the growth of Vibrio splendidus and Staphylococcus aureus, while AjPO3-derived compounds only inhibited the growth of V. splendidus. When dopamine was used as a substrate, AjPO1 and AjPO3-derived compounds inhibited the growth of V. splendidus and Vibrio harveyi, while AjPO2-derived compounds only inhibited the growth of V. splendidus. Moreover, AjPO1-derived compounds showed stronger inhibition in V. harveyi than AjPO3-derived compounds did. However, all of the three AjPO reaction products showed no inhibitions on the growth of Pseudoalteromonas nigrifaciens, Shewanella baltica, Micrococcus lysodeikticus, Streptococcus dysgalactiae and Nocardiopsis sp. with L-DOPA or dopamine as a substrate. Scanning electron microscope (SEM) observation of V. harveyi treated by AjPOs and dopamine showed that AjPO1-derived compounds resulted in massive bacteriolysis, AjPO2-derived compounds caused no obvious alteration on bacterial morphology, and AjPO3-derived compounds increased the ratio of spheroidal bacteria. All these results suggested that AjPO reaction products derived by L-DOPA and dopamine had different but limited antibacterial spectrum, and the different antibacterial effects observed among three AjPOs resulted from the different reaction products generated by AjPOs with the same substrate. CI - Copyright (c) 2014 Elsevier Ltd. All rights reserved. FAU - Jiang, Jingwei AU - Jiang J AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Zhou, Zunchun AU - Zhou Z AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. Electronic address: zunchunz@hotmail.com. FAU - Dong, Ying AU - Dong Y AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Cong, Cong AU - Cong C AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Guan, Xiaoyan AU - Guan X AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Wang, Bai AU - Wang B AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Chen, Zhong AU - Chen Z AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Jiang, Bei AU - Jiang B AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Yang, Aifu AU - Yang A AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Gao, Shan AU - Gao S AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. FAU - Sun, Hongjuan AU - Sun H AD - Liaoning Key Lab of Marine Fishery Molecular Biology, Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning 116023, PR China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140612 PL - England TA - Fish Shellfish Immunol JT - Fish & shellfish immunology JID - 9505220 RN - 0 (Anti-Bacterial Agents) RN - 46627O600J (Levodopa) RN - EC 1.14.18.1 (Monophenol Monooxygenase) SB - IM MH - Animals MH - Anti-Bacterial Agents/*metabolism/pharmacology MH - Bacteriolysis/*drug effects MH - In Vitro Techniques MH - Levodopa/*metabolism MH - Microscopy, Electron, Scanning MH - Monophenol Monooxygenase/immunology/isolation & purification/*metabolism MH - Sea Cucumbers/*enzymology/*immunology MH - Species Specificity MH - Staphylococcus aureus/drug effects/growth & development MH - Vibrio/drug effects/growth & development/ultrastructure OTO - NOTNLM OT - Antibacterial effects OT - Dopamine OT - L-3,4-dihydroxyphenylalanine OT - Phenoloxidases OT - Sea cucumber (Apostichopus japonicus) EDAT- 2014/06/17 06:00 MHDA- 2015/03/10 06:00 CRDT- 2014/06/17 06:00 PHST- 2014/03/05 00:00 [received] PHST- 2014/06/01 00:00 [revised] PHST- 2014/06/05 00:00 [accepted] PHST- 2014/06/17 06:00 [entrez] PHST- 2014/06/17 06:00 [pubmed] PHST- 2015/03/10 06:00 [medline] AID - S1050-4648(14)00201-0 [pii] AID - 10.1016/j.fsi.2014.06.002 [doi] PST - ppublish SO - Fish Shellfish Immunol. 2014 Aug;39(2):458-63. doi: 10.1016/j.fsi.2014.06.002. Epub 2014 Jun 12.