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Thammatinna K, Sinprasertporn A, Naknaen A, Samernate T, Nuanpirom J, Chanwong P, Somboonwiwat K, Pogliano J, Sathapondecha P, Thawonsuwan J, Nonejuie P, Chaikeeratisak V. Nucleus-forming vibriophage cocktail reduces shrimp mortality in the presence of pathogenic bacteria. Sci Rep 2023; 13:17844. [PMID: 37857653 PMCID: PMC10587174 DOI: 10.1038/s41598-023-44840-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 10/12/2023] [Indexed: 10/21/2023] Open
Abstract
The global aquaculture industry has suffered significant losses due to the outbreak of Acute Hepatopancreatic Necrosis Disease (AHPND) caused by Vibrio parahaemolyticus. Since the use of antibiotics as control agents has not been shown to be effective, an alternative anti-infective regimen, such as phage therapy, has been proposed. Here, we employed high-throughput screening for potential phages from 98 seawater samples and obtained 14 phages exhibiting diverse host specificity patterns against pathogenic VPAHPND strains. Among others, two Chimallinviridae phages, designated Eric and Ariel, exhibited the widest host spectrum against vibrios. In vitro and in vivo studies revealed that a cocktail derived from these two nucleus-forming vibriophages prolonged the bacterial regrowth of various pathogenic VPAHPND strains and reduced shrimp mortality from VPAHPND infection. This research highlights the use of high-throughput phage screening that leads to the formulation of a nucleus-forming phage cocktail applicable for bacterial infection treatment in aquaculture.
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Affiliation(s)
- Khrongkhwan Thammatinna
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Ammara Sinprasertporn
- Songkhla Aquatic Animal Health Research and Development Center (SAAHRDC), Department of Fisheries, Songkhla, Thailand
| | - Ampapan Naknaen
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Thanadon Samernate
- Institute of Molecular Biosciences, Mahidol University, Salaya, Nakhon Pathom, Thailand
| | - Jiratchaya Nuanpirom
- Center for Genomics and Bioinformatics Research, Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Parinda Chanwong
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Kunlaya Somboonwiwat
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Joe Pogliano
- Division of Biological Sciences, University of California San Diego, La Jolla, CA, USA
| | - Ponsit Sathapondecha
- Center for Genomics and Bioinformatics Research, Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Jumroensri Thawonsuwan
- Songkhla Aquatic Animal Health Research and Development Center (SAAHRDC), Department of Fisheries, Songkhla, Thailand
| | - Poochit Nonejuie
- Institute of Molecular Biosciences, Mahidol University, Salaya, Nakhon Pathom, Thailand
| | - Vorrapon Chaikeeratisak
- Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand.
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Limkul S, Phiwthong T, Massu A, Jaree P, Thawonsuwan J, Teaumroong N, Boonanuntanasarn S, Somboonwiwat K, Boonchuen P. The interferon-like proteins, Vagos, in Fenneropenaeus merguiensis elicit antimicrobial responses against WSSV and VP AHPND infection. Fish Shellfish Immunol 2022; 131:718-728. [PMID: 36341873 DOI: 10.1016/j.fsi.2022.10.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/18/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
The Vago interferon-like protein participates in the interplay between interferon regulatory factors and the expression of immune-responsive genes. Vago was initially perceived to participate only in the antiviral activation through JAK/STAT pathway. However, certain isoforms of Vago can stimulate antimicrobial responses. Here we identify Vago isoforms in Fenneropenaeus merguiensis (FmVagos) and how they function in antiviral and antibacterial responses against highly invasive pathogens, including white spot syndrome virus (WSSV) and Vibrio parahaemolyticus (VPAHPND). Three isoforms of FmVagos were identified: FmVago4, FmVago5a, and FmVago5b, and expressed throughout tissues of the shrimp. During infection, FmVago4, FmVago5a, and FmVago5b, were up-regulated after WSSV and VPAHPND challenges at certain time points. Pre-injection of purified recombinant FmVago4 (rVago4), FmVago5a (rVago5a), and FmVago5b (rVago5b) proteins could significantly reduce the mortality of shrimp upon WSSV infection, while the increase of survival rate of VPAHPND-infected shrimp was observed only in rVago4 treatment. The immunity routes that FmVagos might instigate in response to the pathogens were examined by qRT-PCR, revealing that the JAK/STAT pathway was activated after introducing rVago4, rVago5a, and rVago5b, while the Toll/IMD pathway and proPO system, combined with PO activity, were provoked only in the rVago4-treated shrimp. Our finding suggests cross-talk between Vago's antiviral and antimicrobial responses in shrimp immunity. These findings complement previous studies in which Vago and its specific isoform could promote viral and bacterial clearance in shrimp.
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Affiliation(s)
- Sirawich Limkul
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Tannatorn Phiwthong
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Amarin Massu
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Phattarunda Jaree
- Center of Applied Shrimp Research and Innovation, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakhon Pathom, 73170, Thailand
| | - Jumroensri Thawonsuwan
- Songkhla Aquatic Animal Health Research Center, Department of Fisheries, Songkhla, 90110, Thailand
| | - Neung Teaumroong
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Surintorn Boonanuntanasarn
- School of Animal Technology and Innovation, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Kunlaya Somboonwiwat
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, 10330, Bangkok, Thailand.
| | - Pakpoom Boonchuen
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
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Jaree P, Boonchuen P, Thawonsuwan J, Kondo H, Hirono I, Somboonwiwat K. Transcriptome profiling reveals the novel immunometabolism-related genes against WSSV infection from Fenneropenaeus merguiensis. Fish Shellfish Immunol 2022; 120:31-44. [PMID: 34758397 DOI: 10.1016/j.fsi.2021.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 06/13/2023]
Abstract
The white spot syndrome virus (WSSV) has been considered a serious threat to shrimp aquaculture. Besides, the activation of cell metabolism as an immune reaction to the virus is now recognized as a piece of the pivotal puzzle of the antiviral responses. Hence, this study explores the relationship between metabolic gene expression and antiviral responses in shrimp using transcriptome analysis. The RNA-seq libraries of Fenneropenaeus merguensis hemocytes after WSSV challenge at early (6 hpi) and late (24 hpi) stages of infection were analyzed to identify differentially expressed genes (DEGs) that the WSSV subverted the expression. One-hundred-thirty-three DEGs that were expressed in response to WSSV infection at both stages were identified. Based on the GO annotation, they were related to innate immunity and metabolic pathway. The expression correlation between "full term" (NGS) and qRT-PCR of 16 representative DEGs is shown. Noticeably, the expression profiles of all the selected metabolic genes involved in glucose metabolism, lipid metabolism, amino acid metabolism, and nucleotide metabolism showed a specific correlation between NGS and qRT-PCR upon WSSV infection. Of these, we further characterized the function related to the WSSV response of glutamine: fructose-6-phosphate aminotransferase (FmGFAT), the rate-limiting enzyme of the hexosamine biosynthesis pathway, which was found to be up-regulated at the late stage of WSSV infection. Suppression of FmGFAT by RNA interference resulted in postponing the death of WSSV-infected shrimp and reduction of viral copy number. These results suggested that the FmGFAT is linked between metabolic change and WSSV responses in shrimp, where the virus-induced metabolic rewiring hijack biological compounds and/or energy sources to benefit the viral replication process.
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Affiliation(s)
- Phattarunda Jaree
- Center of Applied Shrimp Research and Innovation, Institute of Molecular Biosciences, Mahidol University, Salaya, Nakhon Pathom, Thailand
| | - Pakpoom Boonchuen
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima, Thailand
| | - Jumroensri Thawonsuwan
- Songkhla Aquatic Animal Health Research Center, Department of Fisheries, Songkhla, Thailand
| | - Hidehiro Kondo
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo, Japan
| | - Ikuo Hirono
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo, Japan
| | - Kunlaya Somboonwiwat
- Center of Excellence for Molecular Biology and Genomics of Shrimp, Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.
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Alenton RRR, Koiwai K, Nakamura R, Thawonsuwan J, Kondo H, Hirono I. A Hint of Primitive Mucosal Immunity in Shrimp through Marsupenaeus japonicus Gill C-Type Lectin. J Immunol 2019; 203:2310-2318. [PMID: 31519863 DOI: 10.4049/jimmunol.1900156] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 08/06/2019] [Indexed: 01/06/2023]
Abstract
Lectins are found in most living organisms, providing immune surveillance by binding to carbohydrate ligands. In fishes, C-type lectins were isolated from mucus of respiratory organs (skin and gills), where they aid the mucosal immune response in regulating microbiota and suppressing pathogens. In shrimp, however, no mucosal immunity or any form of gill-specific immune defense has been reported, and most identified C-type lectins are associated with hemocyte cellular and humoral responses. Interestingly, our microarray analysis revealed the localization of highly expressed novel biodefense genes in gills, among which is Marsupenaeus japonicus gill C-type lectin (MjGCTL), which we previously reported. Gill mucus collected from M. japonicus displayed similar bacterial agglutination ability as observed with recombinant MjGCTL. This agglutinating ability can be attributed to endogenous MjGCTL (nMjGCTL) detected in gill mucus, which was confirmed with an agglutination assay using purified nMjGCTL from gills. In addition, nMjGCTL also promoted in vivo bacterial phagocytosis by hemocytes. In vivo knockdown of MjGCTL resulted in a compromised immune system, which was manifested by impaired agglutination capacity of gill mucus and downregulation of the gill antimicrobial peptides, crustin and penaeidin. Shrimp immunocompromised by MjCGTL knockdown, apparently lost the ability to respond to attaching and penetrating bacteria. This was evident as increased total bacteria and Vibrio counts in both gills and hemolymph, which were correlated with low survival during a bacterial challenge. These results reveal immune defense by shrimp gills resembling a primitive form of mucosal immunity.
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Affiliation(s)
- Rod Russel R Alenton
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo 108-8477, Japan; and
| | - Keiichiro Koiwai
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo 108-8477, Japan; and
| | - Rika Nakamura
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo 108-8477, Japan; and
| | - Jumroensri Thawonsuwan
- Songkhla Aquatic Animal Health Research Center, Department of Fisheries, Songkhla 90100, Thailand
| | - Hidehiro Kondo
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo 108-8477, Japan; and
| | - Ikuo Hirono
- Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo 108-8477, Japan; and
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Tinwongger S, Thawonsuwan J, Kondo H, Hirono I. Identification of an anti-lipopolysaccharide factor AV-R isoform (LvALF AV-R) related to Vp_PirAB-like toxin resistance in Litopenaeus vannamei. Fish Shellfish Immunol 2019; 84:178-188. [PMID: 30292804 DOI: 10.1016/j.fsi.2018.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 09/27/2018] [Accepted: 10/03/2018] [Indexed: 06/08/2023]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is a shrimp farming disease, caused by the pathogenic Vibrio parahaemolyticus carrying a plasmid encoding Vp_PirAB-like toxins. Formalin-killed cells of V. parahaemolyticus AHPND-causing strain D6 (FKC-VpD6) were used to select Vp_PirAB-like toxin-resistant Litopenaeus vannamei by oral administration. Stomach and hepatopancreas tissues of shrimps that survived for one week were subjected to RNA sequencing. Differentially expressed genes (DEGs) between surviving shrimp, AHPND-infected shrimp, and normal shrimp were identified. The expressions of 10 DEGs were validated by qPCR. Only one gene (a gene homologous to L. vannamei anti-lipopolysaccharide factor AV-R isoform (LvALF AV-R)) was expressed significantly more strongly in the hepatopancreas of surviving shrimp than in the other groups. Significantly higher expression of LvALF AV-R was also observed in shrimp that survived two other trials of FKC-VpD6 selection. Recombinant ALF AV-R bound to LPS, PGN, Gram-negative bacteria, and some Gram-positive bacteria in ELISAs. ALF AV-R recombinant protein did not interact with native Vp_PirAB-like toxin in an ELISA or a Far-Western blot. For L. vannamei orally fed ALF AV-R protein for 3 days, the survival rate following challenge with VpD6-immersion was not significantly different from that of shrimp fed two control diets. These results suggest that LvALF AV-R expression was induced in the hepatopancreas of shrimp in response to the presence of Vp_PirAB-like toxin, although other factors might also be involved in the resistance mechanism.
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Affiliation(s)
- Sasiwipa Tinwongger
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan; Department of Fisheries, Kasetklang Chatuchak, Bangkok, 10900, Thailand
| | - Jumroensri Thawonsuwan
- Songkhla Aquatic Animal Health Research Center, Department of Fisheries, Songkhla, Thailand
| | - Hidehiro Kondo
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Ikuo Hirono
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan.
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Koiwai K, Kodera T, Thawonsuwan J, Riani S, Kawase M, Kondo H, Hirono I. Rapid diagnosis of three shrimp RNA viruses using RT-PCR-DNA chromatography. J Fish Dis 2018; 41:1309-1312. [PMID: 29806113 DOI: 10.1111/jfd.12821] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 04/13/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Affiliation(s)
- Keiichiro Koiwai
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | | | - Jumroensri Thawonsuwan
- Department of Fisheries, Songkhla Aquatic Animal Health Research Center, Songkhla, Thailand
| | - Septya Riani
- PT. Sure Marketing Company, Tangerang, Indonesia
| | - Mitsuo Kawase
- TBA co., Ltd., Sendai, Japan
- Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - Hidehiro Kondo
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - Ikuo Hirono
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
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Koiwai K, Kodera T, Thawonsuwan J, Kawase M, Kondo H, Hirono I. A rapid method for simultaneously diagnosing four shrimp diseases using PCR-DNA chromatography method. J Fish Dis 2018; 41:395-399. [PMID: 29064102 DOI: 10.1111/jfd.12732] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/22/2017] [Accepted: 08/23/2017] [Indexed: 05/21/2023]
Affiliation(s)
- K Koiwai
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | | | - J Thawonsuwan
- Department of Fisheries, Songkhla Aquatic Animal Health Research Center, Songkhla, Thailand
| | - M Kawase
- TBA co., Ltd., Sendai, Japan
- Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan
| | - H Kondo
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - I Hirono
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
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Bunpa S, Nishibuchi M, Thawonsuwan J, Sermwittayawong N. Genetic heterogeneity among Vibrio alginolyticus strains, and design of a PCR-based identification method using gyrB gene sequence. Can J Microbiol 2017; 64:1-10. [PMID: 29017024 DOI: 10.1139/cjm-2017-0269] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Vibrio alginolyticus, a pathogen among humans and marine animals, is ubiquitous in marine environments. The aims of this study were to analyze the relationships between genetic diversity and origins, and to develop new primers based on the gyrB sequence to identify V. alginolyticus isolated from various sources. To determine the genetic diversity of this bacterium, an arbitrarily primed polymerase chain reaction (AP-PCR) technique was performed on 36 strains of V. alginolyticus isolated from diarrhea patients and from diseased marine animals and environments in southern Thailand. The results showed distinct DNA fingerprints of all strains, indicating that they are genetically heterogeneous. For species-specific identification of V. alginolyticus, primers targeting the gyrB gene of V. alginolyticus were developed. Thirty reference Vibrio spp., 13 non-Vibrio spp., and 160 strains of V. alginolyticus isolated from various sources in southern Thailand were used to evaluate the specificity of these primers. Our results showed that the gyrB primers could specifically identify V. alginolyticus from all sample types. In addition, the detection limit of the PCR was at least 95 pg of DNA template. Therefore, we concluded that the newly designed gyrB primers are rapid, highly sensitive, and specific to identify V. alginolyticus isolated from various sources.
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Affiliation(s)
- Supansa Bunpa
- a Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand.,b Food Safety and Health Research Unit, Prince of Songkla University, Songkhla 90110, Thailand
| | - Mitsuaki Nishibuchi
- c Center for Southeast Asian Studies, Kyoto University, Kyoto 606-8501, Japan
| | - Jumroensri Thawonsuwan
- d Coastal Aquatic Animal Health Research Institute, Coastal Fisheries Research and Development Division, Department of Fisheries, Songkhla 90100, Thailand
| | - Natthawan Sermwittayawong
- a Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla 90110, Thailand.,b Food Safety and Health Research Unit, Prince of Songkla University, Songkhla 90110, Thailand
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Tinwongger S, Nochiri Y, Thawonsuwan J, Nozaki R, Kondo H, Awasthi SP, Hinenoya A, Yamasaki S, Hirono I. Virulence of acute hepatopancreatic necrosis disease PirAB-like relies on secreted proteins not on gene copy number. J Appl Microbiol 2016; 121:1755-1765. [PMID: 27522063 DOI: 10.1111/jam.13256] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 05/26/2016] [Accepted: 08/09/2016] [Indexed: 11/28/2022]
Abstract
AIMS To investigate the virulence of the Vp_PirAB-like genes in Vibrio parahaemolyticus- acute hepatopancreatic necrosis disease (AHPND)-causing strain and the factors that are associated with the virulence level. METHODS AND RESULTS The virulence of Vp_PirAB-like was examined using a non-virulent strain FP11 of V. parahaemolyticus transformed with a plasmid harbouring Vp_PirAB-like genes and then it was used to challenge shrimp Litopenaeus vannamei and Marsupenaeus japonicus. Both species experienced 100% mortality at 10 days post infection. Analysis of a mutant strain (E1M), that was originally identified as virulent strain (E1) but lost its virulence to L. vannamei, revealed that it lacked a part of the Vp_PirA-like gene and all of the Vp_PirB-like gene. The copy numbers of Vp_PirA-like and Vp_PirB-like genes varied among virulent strains and were not correlated with their virulence. In Western blotting, Vp_PirA-like and Vp_PirB-like proteins were detected in both the cell lysate and the culture supernatant. The strongest intensity of detecting band in the culture supernatant was observed in the strain that caused the highest mortality. The V. parahaemolyticus AHPND-causing strain, unlike the human tdh-positive strain, did not show any enterotoxicity. CONCLUSION Vibrio parahaemolyticus AHPND-causing strains secrete the Vp_PirA-like and Vp_PirB-like proteins during the growing phase. The amount of secreted proteins affects the shrimp mortality. SIGNIFICANCE AND IMPACT OF THE STUDY The secreted proteins of Vp_PirAB-like are key factors of virulence in the V. parahaemolyticus AHPND-causing strain, but not gene copy.
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Affiliation(s)
- S Tinwongger
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan.,Coastal Fisheries Research and Development Division, Department of Fisheries Kasetklang Chatuchak, Bangkok, Thailand
| | - Y Nochiri
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - J Thawonsuwan
- Coastal Fisheries Research and Development Division, Department of Fisheries, Coastal Aquatic Animal Health Research Institute, Songkhla, Thailand
| | - R Nozaki
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - H Kondo
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
| | - S P Awasthi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - A Hinenoya
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - S Yamasaki
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - I Hirono
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Tokyo, Japan
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Thawonsuwan J, Kiron V, Satoh S, Panigrahi A, Verlhac V. Epigallocatechin-3-gallate (EGCG) affects the antioxidant and immune defense of the rainbow trout, Oncorhynchus mykiss. Fish Physiol Biochem 2010; 36:687-697. [PMID: 19680766 DOI: 10.1007/s10695-009-9344-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2009] [Accepted: 06/11/2009] [Indexed: 05/10/2023]
Abstract
Epigallocatechin-3-gallate (EGCG), a very potent antioxidant derived from green tea, was compared with vitamin E in terms of its effects on antioxidant defense and immune response of rainbow trout, by means of a feeding trial of eight weeks. Two of the experimental diets were supplemented with EGCG at either 20 or 100 mg kg(-1) diet (which contained only 30% of the intended levels) and the third was provided with 100 mg kg(-1) vitamin E but not EGCG. The control diet was not supplemented with the test components. Observation of tissue levels indicated that the high amount of EGCG helped to increase the availability of the lipid-soluble antioxidant vitamin E. The lower levels of lipid hydroperoxide in the liver of fish fed the higher amount of EGCG suggested that it was an effective antioxidant. Considering the immune indices, EGCG and vitamin E at 100 mg (actual amounts 31.9 and 94.1 mg kg(-1) diet, respectively) had identical capabilities in improving phagocytic activity and controlling hydrogen peroxide production by leucocytes. However, EGCG could possibly be more effective at enhancing serum lysozyme activity and the alternative complement activity. This work revealed the potential of EGCG as an antioxidant and an immunostimulant for rainbow trout, at least at the inclusion level of 32 mg kg(-1) diet.
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Affiliation(s)
- J Thawonsuwan
- Coastal Aquatic Animal Health Research Institute, Pawong, Muang, Songkla, 90100, Thailand
| | - V Kiron
- Faculty of Biosciences and Aquaculture, Bodø University College, Bodø, 8049, Norway.
| | - S Satoh
- Department of Marine Biosciences, Tokyo University of Marine Science and Technology, Minato, Tokyo, 108-8477, Japan
| | - A Panigrahi
- Central Institute of Brackishwater Aquaculture, KRC, Kakdwip, West Bengal, 743347, India
| | - V Verlhac
- Aquaculture Research Group, DSM Nutritional Products, CRNA-BP170, 68305, St. Louis cedex, France
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