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Bunnoy A, Yanglang A, Tribamrung N, Keawthong C, Tumree P, Kumwan B, Meachasompop P, Saengrung J, Vanichvatin K, Muangrerk C, Prakitsri P, Suwatthanaphim A, Srisapoome P. Dietary administration of yeast (Saccharomyces cerevisiae) hydrolysate from sugar byproducts promotes the growth, survival, immunity, microbial community and disease resistance to VP (AHPND) in Pacific white shrimp (Litopenaeus vannamei). Fish Shellfish Immunol 2024; 145:109327. [PMID: 38158167 DOI: 10.1016/j.fsi.2023.109327] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/20/2023] [Accepted: 12/20/2023] [Indexed: 01/03/2024]
Abstract
This study investigated the effects of yeast hydrolysate (YH) from sugar byproducts on various parameters in Pacific white shrimp (Litopenaeus vannamei). The study found no significant differences in water quality parameters across all treatment tanks, ensuring that the observed effects were not due to environmental variations. There were no significant differences in growth parameters between the control group and groups receiving YH at different dosages. However, the group given YH at 10.0 g/kg feed exhibited a notably higher survival rate and higher expression of growth-related genes (IGF-2 and RAP-2A) in various shrimp tissues. YH was associated with enhanced immune responses, including lysozyme activity, NBT dye reduction, bactericidal activity, and phagocytic activity. Notably, the 10.0 g/kg feed group displayed the highest phagocytic index, indicating a dose-dependent immune response. Expression of immune-related genes (ALF, LYZ, ProPO, and SOD) was upregulated in various shrimp tissues. This upregulation was particularly significant in the gills, hepatopancreas, intestine, and hemocytes. While total Vibrio counts remained consistent, a reduction in green Vibrio colonies was observed in the intestine of shrimp treated with YH. YH, especially at 5.0 and 10.0 g/kg feed dosages, significantly increased survival rates and RPS values in response to AHPND infection. The findings of this study suggest that incorporating additives derived from yeast byproducts with possible prebiotic properties obtained from sugar byproducts can lead to positive results in terms of enhancing growth performance, immunity, histological improvements, and resistance to V. parahaemolyticus, the causative agent of acute hepatopancreatic necrosis disease (AHPND).
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Affiliation(s)
- Anurak Bunnoy
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Arat Yanglang
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Nattanicha Tribamrung
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Chalinda Keawthong
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Pimchanok Tumree
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Benchawan Kumwan
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Pakapon Meachasompop
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Jureerat Saengrung
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Kontee Vanichvatin
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Chayanee Muangrerk
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
| | - Pravit Prakitsri
- Mitr Phol Biofuel Co. Ltd, Sukhumvit Rd. Klongtoey, Bangkok, 10110, Thailand
| | | | - Prapansak Srisapoome
- Laboratory of Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand; Center of Excellence in Aquatic Animal Health Management, Department of Aquaculture, Faculty of Fisheries, Kasetsart University, 50 Paholayothin Rd, Ladyao, Chatuchak, 10900, Bangkok, Thailand.
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Vandeputte M, Verhaeghe M, Willocx L, Bossier P, Vanrompay D. Bovine Lactoferrin and Hen Ovotransferrin Affect Virulence Factors of Acute Hepatopancreatic Necrosis Disease ( AHPND)-Inducing Vibrio parahaemolyticus Strains. Microorganisms 2023; 11:2912. [PMID: 38138056 PMCID: PMC10745944 DOI: 10.3390/microorganisms11122912] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 11/27/2023] [Accepted: 11/30/2023] [Indexed: 12/24/2023] Open
Abstract
Acute Hepatopancreatic Necrosis Disease (AHPND), a highly destructive shrimp disease, has inflicted severe setbacks on the shrimp farming industry worldwide. As the use of antibiotics is discouraged due to emerging antibiotic-resistant bacteria and the pollution of ecosystems, there is a pressing demand for novel, sustainable alternatives. Hence, the influence of bovine lactoferrin (bLF) and hen ovotransferrin (OT), two natural antimicrobial proteins, on the growth of three AHPND-causing Vibrio parahaemolyticus (Vp) strains (M0904, TW01 and PV1) was examined. Additionally, we explored their potential to affect selected Vp virulence factors such as biofilm formation, swimming and swarming, cell surface hydrophobicity, and activity of released lipases and caseinases. Lag phases of all bacterial growth curves were significantly prolonged in the presence of bLF or OT (1, 5 and 10 mg/mL), and bLF (5 and 10 mg/mL) completely inhibited growth of all strains. In addition, bLF or OT significantly reduced biofilm formation (all tested bLF and OT concentrations for Vp M0904 and Vp PV1), bacterial swimming motility (0.5 mg/mL bLF and OT for Vp M0904 and Vp TW01; 1 mg/mL bLF and OT for all strains), cell surface hydrophobicity (for all strains, all bLF and OT concentrations tested except for 0.125 mg/mL OT for Vp PV1) and lipase activity (1 mg/mL bLF and OT for all strains and 0.5 mg/mL bLF and OT for Vp PV1). These promising in vitro results suggest that bLF and/or OT might be used as novel agents for combating AHPND and warrant further research to elucidate the underlying mechanisms of action to fully unlock their potential for AHPND disease management.
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Affiliation(s)
- Marieke Vandeputte
- Laboratory of Immunology and Animal Biotechnology, Department of Animal Production and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (M.V.); (M.V.); (L.W.)
- Laboratory of Aquaculture & Artemia Reference Center, Department of Animal Production and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium;
| | - Margaux Verhaeghe
- Laboratory of Immunology and Animal Biotechnology, Department of Animal Production and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (M.V.); (M.V.); (L.W.)
| | - Lukas Willocx
- Laboratory of Immunology and Animal Biotechnology, Department of Animal Production and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (M.V.); (M.V.); (L.W.)
| | - Peter Bossier
- Laboratory of Aquaculture & Artemia Reference Center, Department of Animal Production and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium;
| | - Daisy Vanrompay
- Laboratory of Immunology and Animal Biotechnology, Department of Animal Production and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium; (M.V.); (M.V.); (L.W.)
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Abu Hassan MS, Elias NA, Hassan M, Rahmah S, Wan Ismail WI, Harun NA. Polychaeta-mediated synthesis of gold nanoparticles: A potential antibacterial agent against Acute Hepatopancreatic Necrosis Disease ( AHPND)-causing bacteria, Vibrio parahaemolyticus. Heliyon 2023; 9:e21663. [PMID: 37954386 PMCID: PMC10632522 DOI: 10.1016/j.heliyon.2023.e21663] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 10/08/2023] [Accepted: 10/25/2023] [Indexed: 11/14/2023] Open
Abstract
Gold nanoparticles (AuNPs) have emerged as a promising application in aquaculture. Their nano-sized dimensions, comparable to pathogens offer potential solutions for combating antibiotic resistance. In this study, AuNPs were synthesized by using polychaetes, Marphysa moribidii as the bio-reducing agent. Modifications were made to reduce agglomeration in green-synthesized AuNPs through ultrasonication. The antibacterial activities of AuNPs against V. parahaemolyticus were evaluated. The physicochemical characteristics of the green synthesized AuNPs were comprehensively investigated. The successful formation of AuNPs was confirmed by the appearance of a red ruby colour and the presence of surface Plasmon resonance (SPR) absorption peaks at 530 nm as observed from UV-vis spectroscopy. Scanning electron microscopy (SEM) revealed spherical-shaped AuNPs with some agglomerations. Transmission electron microscopy (TEM) showed particle size of AuNPs ranging from 10 nm to 60 nm, meanwhile dynamic light scattering (DLS) analysis indicated an average particle size of 24.36 nm. X-ray diffraction (XRD) analysis confirmed the high crystallinity of AuNPs, and no AuNPs were detected in the polychaetes extracts prior to synthesis. A brief ultrasonication significantly reduced the tendencies for AuNPs to coalesce. The green-synthesized AuNPs demonstrated a remarkable antibacterial efficacy against V. parahaemolyticus. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) tests revealed that a concentration of 0.3 g/ml of AuNPs effectively inhibited V. parahaemolyticus. These findings highlighted the potential of green-synthesized AuNPs as antibacterial agents for the prevention and management of AHPND in aquaculture.
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Affiliation(s)
- Mohamad Sofi Abu Hassan
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Nurul Ashikin Elias
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Marina Hassan
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Sharifah Rahmah
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
- Faculty of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Wan Iryani Wan Ismail
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
- Cell Signalling and Biotechnology Research Group (CeSBTech), Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
| | - Noor Aniza Harun
- Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
- Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
- Advanced Nano Materials (ANOMA) Research Group, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, 21030, Kuala Nerus, Terengganu, Malaysia
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Nguyen PTT, Dinh TT, Tran-Van H. Construction of L-type lectin displaying Saccharomyces cerevisiae for Vibrio parahaemolyticus agglutination. Int Microbiol 2023:10.1007/s10123-023-00440-3. [PMID: 37889383 DOI: 10.1007/s10123-023-00440-3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 10/12/2023] [Accepted: 10/19/2023] [Indexed: 10/28/2023]
Abstract
The utilization of Aga1P anchor protein in the display system for expressing heterologous proteins on the surface of Saccharomyces cerevisiae has been shown to be an ideal approach. This system has the ability to improve the expression of target proteins beyond the cell surface, resulting in increased activity and stability of the expression system. Recent studies have demonstrated that a new L-type lectin from Litopenaeus vannamei (LvLTLC1) has been found to possess the capability of agglutinating Vibrio parahaemolyticus, a pathogen responsible for causing acute hepatopancreatic necrosis disease (AHPND) in shrimp. In this study, LvLTLC1 protein was designed to be expressed on the surface of S. cerevisiae via Aga1P anchor. The expression of LvLTLC1 protein on the surface of S. cerevisiae::pYIP-LvLTLC1-Aga1P was confirmed through the use of analytical techniques including SDS-PAGE, dot blot, and fluorescent immunoassay with LvLTC1-specific antibody. Subsequently, the newly generated yeast strain was evaluated for its ability to agglutinate V. parahaemolyticus and A. hydrophila. The obtained results indicated that S. cerevisiae expressing LvLTLC1 protein on its surface had the ability to agglutinate both AHPND-causing V. parahaemolyticus and A. hydrophila. This newly generated yeast strain could be served as a feed supplement for controlling bacteria in general and AHPND in particular.
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Affiliation(s)
- Phuong-Thao Thi Nguyen
- Department of Molecular and Environmental Biotechnology; Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Laboratory of Molecular Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Faculty of Agriculture and Food Technology, Tien Giang University, My Tho, Vietnam
| | - Thuan-Thien Dinh
- Department of Molecular and Environmental Biotechnology; Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Laboratory of Molecular Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Hieu Tran-Van
- Department of Molecular and Environmental Biotechnology; Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam.
- Laboratory of Molecular Biotechnology, University of Science, Ho Chi Minh City, Vietnam.
- Vietnam National University, Ho Chi Minh City, Vietnam.
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Hoa TTT, Fagnon MS, Thy DTM, Chabrillat T, Trung NB, Kerros S. Growth Performance and Disease Resistance against Vibrio parahaemolyticus of Whiteleg Shrimp ( Litopenaeus vannamei) Fed Essential Oil Blend (Phyto AquaBiotic). Animals (Basel) 2023; 13:3320. [PMID: 37958074 PMCID: PMC10649422 DOI: 10.3390/ani13213320] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Revised: 10/18/2023] [Accepted: 10/21/2023] [Indexed: 11/15/2023] Open
Abstract
Acute Hepatopancreatic Necrosis Disease (AHPND) is a serious and emerging disease caused by a group of strains of Vibrio parahaemolyticus and affects farmed shrimp, particularly whiteleg shrimps (Liptopenaeus vannamei). The objective of this study is to assess the effect of dietary supplementation with two dosages of an essential oil mixture (Phyto AquaBiotic, abbreviated as PAB) on growth performance and mortality reduction after challenge against V. parahaemolyticus. PAB was mixed with basal diets at rates of 0, 1 and 2 g/kg and fed for 42 days. Each tank was stocked with 100 individuals with experimentation performed in triplicate. The results showed an improvement in growth performance in a dose-dependent manner, specifically regarding daily weight gain, specific growth rate and total biomass, which were significantly improved compared to control (p < 0.05). Further, PAB significantly reduced mortalities when challenged against Vibrio parahaemolyticus (p < 0.05) and decreased Vibrio spp. count in the hepatopancreas of infected shrimp. Overall, PAB was efficient in reducing mortalities in cases of disease outbreaks at a rate of 2 g/kg.
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Affiliation(s)
- Tran Thi Tuyet Hoa
- Faculty of Aquatic Pathology, College of Aquaculture and Fisheries, Can Tho University, Campus II, 3/2 Street, Can Tho City 90000, Vietnam; (D.T.M.T.)
| | | | - Dang Thuy Mai Thy
- Faculty of Aquatic Pathology, College of Aquaculture and Fisheries, Can Tho University, Campus II, 3/2 Street, Can Tho City 90000, Vietnam; (D.T.M.T.)
| | | | - Nguyen Bao Trung
- Faculty of Aquatic Pathology, College of Aquaculture and Fisheries, Can Tho University, Campus II, 3/2 Street, Can Tho City 90000, Vietnam; (D.T.M.T.)
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Kang G, Woo WS, Kim KH, Son HJ, Sohn MY, Kong HJ, Kim YO, Kim DG, Kim EM, Noh ES, Park CI. Identification of Potential Hazards Associated with South Korean Prawns and Monitoring Results Targeting Fishing Bait. Pathogens 2023; 12:1228. [PMID: 37887744 PMCID: PMC10610149 DOI: 10.3390/pathogens12101228] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/03/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Abstract
This study detected two potential pathogens, Vibro parahaemolyticus, which causes acute hepatopancreatic necrosis disease (AHPND), and white spot syndrome virus (WSSV), in fishing bait in South Korea. However, their infectious nature was not confirmed, possibly due to the degradation caused by freezing/thawing or prolonged storage under frozen conditions. While infectivity was not confirmed in this study, there is still a significant risk of exposure to these aquatic products. Furthermore, fishing bait and feed should be handled with caution as they are directly exposed to water, increasing the risk of disease transmission. In Australia, cases of WSSV infection caused by imported shrimp intended for human consumption have occurred, highlighting the need for preventive measures. While freezing/thawing is a method for inactivating pathogens, there are still regulatory and realistic issues to be addressed.
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Affiliation(s)
- Gyoungsik Kang
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Won-Sik Woo
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Kyung-Ho Kim
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Ha-Jeong Son
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Min-Young Sohn
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
| | - Hee Jeong Kong
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Dong-Gyun Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Eun Mi Kim
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Eun Soo Noh
- Biotechnology Research Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Chan-Il Park
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, Tongyeong 53064, Republic of Korea; (G.K.)
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Reyes G, Andrade B, Betancourt I, Panchana F, Solórzano R, Preciado C, Sorroza L, Trujillo LE, Bayot B. Microbial signature profiles of Penaeus vannamei larvae in low-survival hatchery tanks affected by vibriosis. PeerJ 2023; 11:e15795. [PMID: 37671363 PMCID: PMC10476614 DOI: 10.7717/peerj.15795] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 07/05/2023] [Indexed: 09/07/2023] Open
Abstract
Vibriosis is caused by some pathogenic Vibrio and produces significant mortality in Pacific white shrimp Penaeus (Litopenaeus) vannamei larvae in commercial hatcheries. Acute hepatopancreatic necrosis disease (AHPND) is an emerging vibriosis affecting shrimp-producing countries worldwide. Zoea 2 syndrome is another type of vibriosis that affects the early stages of P. vannamei larvae. Although the pathogenesis of AHPND and zoea 2 syndrome is well known, there is scarce information about microbial composition and biomarkers of P.vannamei larvae affected by AHPND, and there is no study of the microbiome of larvae affected by zoea 2 syndrome. In this work, we characterized the microbiome of P. vannamei larvae collected from 12 commercial hatchery tanks by high-throughput sequencing. Seven tanks were affected by AHPND, and five tanks were affected by zoea 2 syndrome. Subsequently, all samples were selected for sequencing of the V3-V4 region of the16S rRNA gene. Similarity analysis using the beta diversity index revealed significant differences in the larval bacterial communities between disease conditions, particularly when Vibrio was analyzed. Linear discriminant analysis with effect size determined specific microbial signatures for AHPND and zoea 2 syndrome. Sneathiella, Cyclobacterium, Haliea, Lewinella, among other genera, were abundant in AHPND-affected larvae. Meanwhile, Vibrio, Spongiimonas, Meridianimaribacter, Tenacibaculum, among other genera, were significantly abundant in larvae affected by zoea 2 syndrome. The bacterial network at the phylum level for larvae collected from tanks affected by AHPND showed greater complexity and connectivity than in samples collected from tanks affected by zoea 2 syndrome. The bacterial connections inter Vibrio genera were higher in larvae from tanks affected by zoea 2 syndrome, also presenting other connections between the genera Vibrio and Catenococcus. The identification of specific biomarkers found in this study could be useful for understanding the microbial dynamics during different types of vibriosis.
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Affiliation(s)
- Guillermo Reyes
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Betsy Andrade
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Irma Betancourt
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Fanny Panchana
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Ramiro Solórzano
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Cristhian Preciado
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
| | - Lita Sorroza
- Facultad de Ciencias Agropecuarias, Universidad Técnica de Machala, 5.5 Av Panamericana, Machala, Ecuador
| | - Luis E. Trujillo
- Industrial Biotechnology Research Group, CENCINAT, Universidad de las Fuerzas Armadas, ESPE, Sangolquí, Ecuador
| | - Bonny Bayot
- Centro Nacional de Acuacultura e Investigaciones Marinas, CENAIM -ESPOL, Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
- Facultad de Ingeniería Marítima y Ciencias del Mar (FIMCM), Escuela Superior Politécnica del Litoral, ESPOL, Guayaquil, Ecuador
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Zheng Z, Liu S, Lin Z, Aweya JJ, Zheng Z, Zhao Y, Chen X, Li S, Zhang Y. Kruppel homolog 1 modulates ROS production and antimicrobial peptides expression in shrimp hemocytes during infection by the Vibrio parahaemolyticus strain that causes AHPND. Front Immunol 2023; 14:1246181. [PMID: 37711612 PMCID: PMC10497957 DOI: 10.3389/fimmu.2023.1246181] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 08/09/2023] [Indexed: 09/16/2023] Open
Abstract
Shrimp aquaculture has been seriously affected by acute hepatopancreatic necrosis disease (AHPND), caused by a strain of Vibrio parahaemolyticus that carries the Pir toxin plasmids (V. parahaemolyticus (AHPND)). In this study, the transcription factor, Kruppel homolog 1-like of Peneaus vannamei (PvKr-h1), was significantly induced in shrimp hemocytes after V. parahaemolyticus (AHPND) challenge, suggesting that PvKr-h1 is involved in shrimp immune response. Knockdown of PvKr-h1 followed by V. parahaemolyticus (AHPND) challenge increased bacterial abundance in shrimp hemolymph coupled with high shrimp mortality. Moreover, transcriptome and immunofluorescence analyses revealed that PvKr-h1 silencing followed by V. parahaemolyticus (AHPND) challenge dysregulated the expression of several antioxidant-related enzyme genes, such as Cu-Zu SOD, GPX, and GST, and antimicrobial peptide genes, i.e., CRUs and PENs, and reduced ROS activity and nuclear translocation of Relish. These data reveal that PvKr-h1 regulates shrimps' immune response to V. parahaemolyticus (AHPND) infection by suppressing antioxidant-related enzymes, enhancing ROS production and promoting nuclei import of PvRelish to stimulate antimicrobial peptide genes expression.
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Affiliation(s)
- Zhou Zheng
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, China
- Department of Medical Laboratory and Department of Reproductive Medicine, Luohu Clinical College of Shantou University Medical College, Shantou University, Shantou, China
| | - Shangjie Liu
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, China
- Department of Medical Laboratory and Department of Reproductive Medicine, Luohu Clinical College of Shantou University Medical College, Shantou University, Shantou, China
| | - Zhongyang Lin
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, China
| | - Jude Juventus Aweya
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, China
- College of Ocean Food and Biological Engineering, Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering, Jimei University, Xiamen, Fujian, China
| | - Zhihong Zheng
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, China
| | - Yongzhen Zhao
- Guangxi Academy of Fishery Sciences, Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Nanning, China
| | - Xiuli Chen
- Guangxi Academy of Fishery Sciences, Guangxi Key Laboratory of Aquatic Genetic Breeding and Healthy Aquaculture, Nanning, China
| | - Shengkang Li
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, China
| | - Yueling Zhang
- Institute of Marine Sciences and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou, China
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Castellanos A, Restrepo L, Bajaña L, Betancourt I, Bayot B, Reyes A. Genomic and Evolutionary Features of Nine AHPND Positive Vibrio parahaemolyticus Strains Isolated from South American Shrimp Farms. Microbiol Spectr 2023; 11:e0485122. [PMID: 37272817 PMCID: PMC10433878 DOI: 10.1128/spectrum.04851-22] [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: 11/29/2022] [Accepted: 05/15/2023] [Indexed: 06/06/2023] Open
Abstract
Vibrio parahaemolyticus is a bacterial pathogen that becomes lethal to Penaeus shrimps when acquiring the pVA1-type plasmid carrying the PirABvp genes, causing acute hepatopancreatic necrosis disease (AHPND). This disease causes significant losses across the world, with outbreaks reported in Southeast Asia, Mexico, and South America. Virulence level and mortality differences have been reported in isolates from different locations, and whether this phenomenon is caused by plasmid-related elements or genomic-related elements from the bacteria remains unclear. Here, nine genomes of South American AHPND-causing V. parahaemolyticus (VPAHPND) isolates were assembled and analyzed using a comparative genomics approach at (i) whole-genome, (ii) secretion system, and (iii) plasmid level, and then included for a phylogenomic analysis with another 86 strains. Two main results were obtained from our analyses. First, all isolates contained pVA1-type plasmids harboring the toxin coding genes, and with high similarity with the prototypical sequence of Mexican-like origin, while phylogenomic analysis showed some level of heterogeneity with discrete clusters and wide diversity compared to other available genomes. Second, although a high genomic similarity was observed, variation in virulence genes and clusters was observed, which might be relevant in the expression of the disease. Overall, our results suggest that South American pathogenic isolates are derived from various genetic lineages which appear to have acquired the plasmid through horizontal gene transfer. Furthermore, pathogenicity seems to be a multifactorial trait where the degree of virulence could be altered by the presence or variations of several virulence factors. IMPORTANCE AHPND have caused losses of over $2.6 billion to the aquaculture industry around the world due to its high mortality rate in shrimp farming. The most common etiological agent is V. parahaemolyticus strains possessing the pVA1-type plasmid carrying the PirABvp toxin. Nevertheless, complete understanding of the role of genetic elements and their impact in the virulence of this pathogen remains unclear. In this work, we analyzed nine South American AHPND-causing V. parahaemolyticus isolates at a genomic level, and assessed their evolutionary relationship with other 86 strains. We found that all our isolates were highly similar and possessed the Mexican-type plasmid, but their genomic content did not cluster with other Mexican strains, but instead were spread across all isolates. These results suggest that South American VPAHPND have different genetic backgrounds, and probably proceed from diverse geographical locations, and acquire the pVA1-type plasmid via horizontal gene transfer at different times.
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Affiliation(s)
- Alejandro Castellanos
- Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia
- Max Planck Tandem Group in Computational Biology, Universidad de los Andes, Bogotá, Colombia
| | - Leda Restrepo
- Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia
- Max Planck Tandem Group in Computational Biology, Universidad de los Andes, Bogotá, Colombia
- Postdoctoral Training in Human Genetics and Molecular Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Escuela Superior Politécnica del Litoral, ESPOL, Centro Nacional de Acuicultura e Investigaciones Marinas, CENAIM, Guayaquil, Ecuador
| | - Leandro Bajaña
- Escuela Superior Politécnica del Litoral, ESPOL, Centro Nacional de Acuicultura e Investigaciones Marinas, CENAIM, Guayaquil, Ecuador
| | - Irma Betancourt
- Escuela Superior Politécnica del Litoral, ESPOL, Centro Nacional de Acuicultura e Investigaciones Marinas, CENAIM, Guayaquil, Ecuador
| | - Bonny Bayot
- Escuela Superior Politécnica del Litoral, ESPOL, Centro Nacional de Acuicultura e Investigaciones Marinas, CENAIM, Guayaquil, Ecuador
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ingeniería Marítima y Ciencias del Mar, FIMCM, Guayaquil, Ecuador
| | - Alejandro Reyes
- Department of Biological Sciences, Universidad de los Andes, Bogotá, Colombia
- Max Planck Tandem Group in Computational Biology, Universidad de los Andes, Bogotá, Colombia
- Center for Genome Sciences and Systems Biology, Department of Pathology and Immunology, Washington University in Saint Louis, Saint Louis, Missouri, USA
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10
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Wang P, Guo B, Zhang X, Wang Y, Yang G, Shen H, Gao S, Zhang L. One-Pot Molecular Diagnosis of Acute Hepatopancreatic Necrosis Disease by Recombinase Polymerase Amplification and CRISPR/Cas12a with Specially Designed crRNA. J Agric Food Chem 2023; 71:6490-6498. [PMID: 37014765 DOI: 10.1021/acs.jafc.2c08689] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is one of the most devastating diseases in aquaculture, causing significant economic losses in seafood supplies worldwide. Early detection is critical for its prevention, which requires reliable and fast-responding diagnosis tools with point-of-care testing (POCT) capacity. Recombinase polymerase amplification (RPA) has been combined with CRISPR/Cas12a for AHPND diagnosis with a two-step procedure, but the operation is inconvenient and has the risk of carryover contamination. Here, we develop an RPA-CRISPR one-pot assay that integrates RPA and CRISPR/Cas12a cleavage into simultaneous reactions. Using the special design of crRNA, which is based on suboptimal protospacer adjacent motifs (PAM), RPA and Cas12a are made compatible in one pot. The assay is highly specific with a good sensitivity of 102 copies/reaction. This study provides a new choice for AHPND diagnosis with a POCT facility and sets a good example for developing RPA-CRISPR one-pot molecular diagnosis assays.
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Affiliation(s)
- Pei Wang
- School of Food Science and Pharmaceutical Engineering, School of Life Sciences, Nanjing Normal University, Nanjing 210023, China
| | - Bo Guo
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Xue Zhang
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Yue Wang
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Guang Yang
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Hui Shen
- Jiangsu Institute of Oceanology and Marine Fisheries, Nantong 226007, China
| | - Song Gao
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang 222005, China
| | - Lihui Zhang
- School of Food Science and Pharmaceutical Engineering, School of Life Sciences, Nanjing Normal University, Nanjing 210023, China
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Hernández-Cabanyero C, Carrascosa E, Jiménez S, Fouz B. Exploring the Effect of Functional Diets Containing Phytobiotic Compounds in Whiteleg Shrimp Health: Resistance to Acute Hepatopancreatic Necrotic Disease Caused by Vibrio parahaemolyticus. Animals (Basel) 2023; 13:ani13081354. [PMID: 37106917 PMCID: PMC10135097 DOI: 10.3390/ani13081354] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 04/12/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
Acute hepatopancreatic necrosis (AHPND) is an emerging severe disease caused by strains of Vibrio parahaemolyticus (VpAHPND) in whiteleg shrimp (Litopenaeus vannamei). Mitigating its negative impact, and at the same time minimizing antibiotics treatments, is the major challenge in shrimp aquaculture. A sustainable strategy could be to include immunostimulants in diet. Phytobiotics, harmless plant extracts with immunostimulatory and biocidal activities, are promising candidates. In this study, we evaluated the effectiveness of two diets (E and F) supplemented with phytobiotics (functional diets) in terms of protecting shrimp against AHPND. For this purpose, groups of animals were fed functional or control diets for 4 and 5 weeks and, subsequently, they were challenged with VpAHPND by immersion. We compared the mortality in infected groups and estimated the percentage of carriers by using a specific qPCR in hepatopancreas tissue. The results showed that mortality was significantly lower in the group fed functional diet E and, after a 5-week feeding schedule. This group also showed the lowest percentage of carriers. The pathological effects were also reduced with diet F. Thus, feeding shrimp with phytobiotic-enriched diets in critical periods will be highly beneficial because it increases the host's resistance to AHPND pathology.
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Affiliation(s)
- Carla Hernández-Cabanyero
- Instituto Universitario de Biotecnología y Biomedicina (BIOTECMED), Universitat de València, Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - Esther Carrascosa
- Instituto Universitario de Biotecnología y Biomedicina (BIOTECMED), Universitat de València, Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain
| | - Silvia Jiménez
- IGUSOL ADVANCE, S.A. Pol. Ind. Lentiscares. C/La Losa, 7, 26370 Navarrete, La Rioja, Spain
| | - Belén Fouz
- Instituto Universitario de Biotecnología y Biomedicina (BIOTECMED), Universitat de València, Dr. Moliner, 50, 46100 Burjassot, Valencia, Spain
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12
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Orozco-Ochoa AK, González-Gómez JP, Castro-Del Campo N, Lira-Morales JD, Martínez-Rodríguez CI, Gomez-Gil B, Chaidez C. Characterization and genome analysis of six novel Vibrio parahaemolyticus phages associated with acute hepatopancreatic necrosis disease ( AHPND). Virus Res 2023; 323:198973. [PMID: 36272541 PMCID: PMC10194199 DOI: 10.1016/j.virusres.2022.198973] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 05/11/2022] [Revised: 10/18/2022] [Accepted: 10/18/2022] [Indexed: 11/09/2022]
Abstract
Vibrio parahaemolyticus causes acute hepatopancreatic necrosis disease (AHPND) in farmed shrimp. Due to its damage potential, which could be as high as a 100% mortality rate, bacteriophages have emerged as a promising natural control intervention other than antibiotics, yet multiple roadblocks need to be overcome. In this study, six bacteriophages isolated from seafood samples, seawater, and estuary water in Sinaloa, Mexico, demonstrated a narrow host range among Mexican AHPND-causing V. parahaemolyticus. All bacteriophages are composed of a double-stranded DNA genome with lengths ranging between 43,268 and 57,805 bp. All six phages exhibited latency periods of 10-30 min and burst sizes of 34-168 viral particles per infected cell. The optimal MOI for bacteriophage propagation was 0.01-1. No transfer RNA (tRNA), virulence, or resistance genes were found in either genome, and the life cycle of these phages was classified as virulent by the PhageAI platform. Phylogenetic and comparative genomics analyzes assigned phages M3, C2, M9, and M83 as new species not yet reported within the genus Maculvirus, Autographiviridae family. ALK and CHI phages were assigned as new members of a new genus not yet classified within the subfamily Queuovirinae. The findings highlight the potential of CHI, ALK, M3, C2, M9, and M83 as promising alternatives against AHPND-causing V. parahaemolyticus from Mexico.
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Affiliation(s)
- Alma Karen Orozco-Ochoa
- Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Laboratorio Nacional para la Investigación en Inocuidad Alimentaria (LANIIA), Carretera a Eldorado Km 5.5, Campo El Diez, Culiacán, Sinaloa 80110, México
| | - Jean Pierre González-Gómez
- Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Laboratorio Nacional para la Investigación en Inocuidad Alimentaria (LANIIA), Carretera a Eldorado Km 5.5, Campo El Diez, Culiacán, Sinaloa 80110, México
| | - Nohelia Castro-Del Campo
- Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Laboratorio Nacional para la Investigación en Inocuidad Alimentaria (LANIIA), Carretera a Eldorado Km 5.5, Campo El Diez, Culiacán, Sinaloa 80110, México
| | - Juan Daniel Lira-Morales
- Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Laboratorio Nacional para la Investigación en Inocuidad Alimentaria (LANIIA), Carretera a Eldorado Km 5.5, Campo El Diez, Culiacán, Sinaloa 80110, México
| | - Célida Isabel Martínez-Rodríguez
- Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Laboratorio Nacional para la Investigación en Inocuidad Alimentaria (LANIIA), Carretera a Eldorado Km 5.5, Campo El Diez, Culiacán, Sinaloa 80110, México
| | - Bruno Gomez-Gil
- Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Unidad Mazatlán en Acuicultura y Manejo Ambiental, Mazatlán, Sinaloa AP 711, México
| | - Cristóbal Chaidez
- Centro de Investigación en Alimentación y Desarrollo, A.C. (CIAD), Laboratorio Nacional para la Investigación en Inocuidad Alimentaria (LANIIA), Carretera a Eldorado Km 5.5, Campo El Diez, Culiacán, Sinaloa 80110, México.
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13
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Naranitus P, Aiamsa-At P, Sukonta T, Hannanta-Anan P, Chaijarasphong T. Smartphone-compatible, CRISPR-based platforms for sensitive detection of acute hepatopancreatic necrosis disease in shrimp. J Fish Dis 2022; 45:1805-1816. [PMID: 35946585 DOI: 10.1111/jfd.13702] [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: 05/21/2022] [Revised: 07/26/2022] [Accepted: 07/29/2022] [Indexed: 06/15/2023]
Abstract
Acute Hepatopancreatic Necrosis Disease (AHPND), caused by bacterial isolates expressing PirAB binary toxins, represents the severest and most economically destructive disease affecting penaeid shrimp. Its rapid disease progression and associated massive mortalities call for vigilant monitoring and early diagnosis, but molecular detection methods that simultaneously satisfy the requirements of sensitivity, specificity, and portability are still scarce. In this work, the CRISPR-Cas12a technology was harnessed for the development of two fluorescent assays compatible with naked-eye visualization. The first assay, AP4-Cas12a, was based on the OIE-recommended AP4 two-tubed nested PCR method and was designed to bypass the time-consuming and potentially hazardous agarose gel electrophoresis step. Using AP4-Cas12a, the detection limit of 10 copies per reaction could be achieved within less than 30 minutes post-PCR. The second assay, RPA-Cas12a, utilized recombinase polymerase amplification (RPA) to rapidly and isothermally amplify the target DNA, followed by amplicon detection by Cas12a, resulting in a protocol that can be completed in less than an hour at a constant temperature of 37°C. The detection limit of RPA-Cas12a is 100 copies of plasmid DNA or 100 fg of bacterial genomic DNA per reaction. Importantly, we validated that both assays are compatible with a previously reported smartphone-based device for facile visualization of fluorescence, thereby providing an affordable option that requires less consumables than lateral flow detection. Using this portable device for readouts, the AP4-Cas12a and RPA-Cas12a methods showed excellent concordance with the AP4-agarose gel electrophoresis approach in the evaluation of clinical samples. Therefore, the developed Cas12a assays have the potential to streamline both in-laboratory and onsite diagnosis of AHPND.
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Affiliation(s)
- Punyaporn Naranitus
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Praphutson Aiamsa-At
- Center of Excellence for Shrimp Molecular Biology and Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Thanwarat Sukonta
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Pimkhuan Hannanta-Anan
- Department of Biomedical Engineering, School of Engineering, King Mongkut's Institute of Technology Ladkrabang, Bangkok, Thailand
| | - Thawatchai Chaijarasphong
- Department of Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand
- Center of Excellence for Shrimp Molecular Biology and Biotechnology, Faculty of Science, Mahidol University, Bangkok, Thailand
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14
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Sánchez-Díaz R, Molina-Garza ZJ, Cruz-Suárez LE, Selvin J, Kiran GS, Gómez-Gil B, Galaviz-Silva L, Ibarra-Gámez JC. Draft genome sequences of Bacillus pumilus 36R ATNSAL and B. safensis 13L LOBSAL, two potential candidate probiotic strains for shrimp aquaculture. J Glob Antimicrob Resist 2022; 31:304-308. [PMID: 36272706 DOI: 10.1016/j.jgar.2022.10.002] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 09/21/2022] [Accepted: 10/06/2022] [Indexed: 11/08/2022] Open
Abstract
OBJECTIVES This work aimed to isolate bacterial strains with antagonist activity against Vibrio parahaemolyticus, the causative agent of acute hepatopancreatic necrosis disease (VPAHPND) that was isolated from outbreaks in Mexico. Here, we report the draft genome sequences of two antagonistic strains, isolated from saline sediment in Sonora, Mexico. METHODS Cross-streak and well diffusion tests were employed to find the bacterial strains with higher inhibitory activity against VPAHPND. The whole genomes of B. pumilus 36R ATNSAL and B. safensis 13L LOBSAL were sequenced using Ion TorrentTM (PGM) and Illumina MiseqTM platforms, respectively. Annotation was performed using the RAST server, and the genes involved in the biosynthesis of bacterial secondary metabolites were predicted using antiSMASH. RESULTS Two bacterial isolates, B. safensis 13L LOBSAL and B. pumilus 36R ATNSAL, were chosen based on their strong antagonistic profiles. The genome of 36R ATNSAL was 3.94 Mbp in length and contained 3824 genes and a total of 4116 coding sequences (CDSs); the genome of 13L LOBSAL was 3.68 Mbp and contained 3619 genes and 3688 CDSs. Twenty-eight and 32 biosynthetic gene clusters responsible for putative antimicrobial metabolite production were identified in 36R ATNSAL and 13L LOBSAL, respectively. CONCLUSIONS The two strains 13L LOBSAL and 36R ATNSAL showed excellent probiotic profiles in vitro. The genome sequences will help with the mining and reconstruction of metabolic pathways in Bacillus strains. Genome sequence-guided strain improvement could augment the probiotic potential of Bacillus strains for applications in shrimp aquaculture.
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Affiliation(s)
- Ricardo Sánchez-Díaz
- Technological Institute of Sonora (ITSON), 5 de Febrero 818 Sur, Col. Centro, Ciudad Obregón, Sonora,CP 85000, México
| | - Zinnia Judith Molina-Garza
- Autonomous University of Nuevo Leon (UANL), Ave. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, Nuevo León, CP 66455, Mexico
| | - Lucía Elizabeth Cruz-Suárez
- Autonomous University of Nuevo Leon (UANL), Ave. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, Nuevo León, CP 66455, Mexico
| | - Joseph Selvin
- Department of Microbiology, Pondicherry University, Puducherry, India
| | - George Seghal Kiran
- Department of Food Science and Technology, Pondicherry University, Puducherry, India
| | - Bruno Gómez-Gil
- Research Center for Food and Development (CIAD), Mazatlan Unit, Av. Sábalo Cerritos S/N, Mazatlán, Sinaloa, C.P. 82112. Mexico
| | - Lucio Galaviz-Silva
- Autonomous University of Nuevo Leon (UANL), Ave. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, Nuevo León, CP 66455, Mexico.
| | - José Cuauhtémoc Ibarra-Gámez
- Technological Institute of Sonora (ITSON), 5 de Febrero 818 Sur, Col. Centro, Ciudad Obregón, Sonora,CP 85000, México.
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Duong ND, Nguyen-Phuoc KH, Mai-Hoang TD, Do KYT, Huynh TB, Nguyen NTT, Tran TL, Tran-Van H. Fabrication of lateral flow immunoassay strip for rapid detection of acute hepatopancreatic necrosis disease. 3 Biotech 2022; 12:243. [PMID: 36033912 PMCID: PMC9402842 DOI: 10.1007/s13205-022-03311-2] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 08/15/2022] [Indexed: 11/01/2022] Open
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is a contagious disease for the shrimp cultivation, thus early detection of disease is an unmet need. This present study documented for the first time a simple lateral flow immunoassay (LFIA) strip using polyclonal antibodies was created for the rapid detection both of PirAvp and PirBvp protein simultaneously. LFIA method based on the principle of sandwich format. The label is the colloidal gold. The polyclonal antibody was conjugated with the colloidal gold acting as biorecognition element and coated onto the conjugate pad. The rabbit anti-Pirvp, anti-PirBvp antibodies, and goat anti-rabbit IgG antibody were separately sprayed onto a nitrocellulose membrane to form two test lines and one control line, respectively. The appearance of red bands at the control line and the test line indicated a positive result. A single coloured band at control area indicated a negative result. The limit of detection of LFIA was found to be 125 ng, which could be visually detected by naked eye within 15 min. There was no cross-reactivity observed with VPnon-AHPND. Furthermore, the sensitivity and specificity of LFIA were 94.0% and 98.0%, respectively. The developed test strip could be a game changer for early and in situ diagnosis of AHPND.
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Affiliation(s)
- Ngoc-Diem Duong
- Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Pasteur Institute in Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Khai-Hoan Nguyen-Phuoc
- Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Thuy-Dung Mai-Hoang
- Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Kim-Yen Thi Do
- Pasteur Institute in Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Tuan-Binh Huynh
- Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | | | - Thuoc Linh Tran
- Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Hieu Tran-Van
- Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
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Sha H, Li L, Lu J, Xiong J. High nutrient induces virulence in the AHPND-causing Vibrio parahaemolyticus, interpretation from the ecological assembly of shrimp gut microbiota. Fish Shellfish Immunol 2022; 127:758-765. [PMID: 35835385 DOI: 10.1016/j.fsi.2022.07.016] [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: 05/12/2022] [Revised: 07/03/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
Shrimp diseases frequently occur during the later farming stages, when the rearing water is eutrophic. This observation provides clue that the virulence of pathogens could be induced by elevated nutrient, whereas the underlying ecological mechanism remains limited. To address this pressing knowledge, we explored how gut microbiota responded to the infection of oligotrophic (OVp) or eutrophic (EVp) pre-cultured Vibrio parahaemolyticus, a causing pathogen of shrimp acute hepatopancreatic necrosis disease (AHPND). Resulted revealed that OVp and EVp infections caused dysbiosis in the gut microbiota and compromised shrimp immunity, while the later infection led to earlier and higher mortality. Significant associations were detected between the gut microbiota and each of the measured immune activities. Neutral community model showed that the assembly of gut microbiota was more strongly governed by deterministic processes in EVp infection, followed by EVp infected and control shrimp. Additionally, there were significantly lower temporal turnover rate and average variation degree in the gut microbiota in EVp infected shrimp compared with control individuals. Notably, we identified 22 infection-discriminatory taxa after ruling out the ontogenic effect. Using profiles of the 22 indicators as independent variables, the diagnosis model accurately distinguished (an overall 85.9% accuracy) the infected status (control, OVp or EVp infected shrimp), with 81.3% accuracy at the initial infection stage. The convergent and deterministic gut microbiota in EVp infected shrimp could partially explain why it is challenge to cure APHND from an ecological viewpoint. In addition, we provided a sensitive approach for diagnosing the onset of infection, when disease symptom is unobservable.
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Affiliation(s)
- Haonan Sha
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Luyue Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Jiaqi Lu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Jinbo Xiong
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo, 315211, China; School of Marine Sciences, Ningbo University, Ningbo, 315211, China.
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17
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Chen YL, Kumar R, Liu CH, Wang HC. Litopenaeus vannamei peritrophin interacts with WSSV and AHPND-causing V. parahaemolyticus to regulate disease pathogenesis. Fish Shellfish Immunol 2022; 126:271-282. [PMID: 35609762 DOI: 10.1016/j.fsi.2022.05.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 03/21/2022] [Revised: 05/12/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
Peritrophins are peritrophic membrane (PM) proteins that can interact with chitin fibers via chitin-binding domains. Peritrophins have essential roles in providing porosity and strength to the PM that lines the shrimp midgut. Acute hepatopancreatic necrosis disease (AHPND), caused by strains of V. parahaemolyticus, is known to initially colonize the shrimp stomach and simultaneously disrupt its structural barriers (e.g., cuticle or epithelial tissues) to reach the hepatopancreas. Although stomach and hepatopancreas were identified as target tissues involved in AHPND pathogenesis, our results indicated that peritrophin in peritrophic membrane has a crucial role in determining not only colonization of AHPND-causing bacteria but also their tissue distribution. As the interaction between LvPeritrophin (LvPT) and WSSV (white spot syndrome virus) is not well understood, we noted that LvPT expression was upregulated in shrimp stomach challenged with either WSSV or AHPND. In an in vitro pathogen binding assay, there was strong binding of recombinant LvPT WSSV and AHPND-causing V. parahaemolyticus, and various bacteria. Furthermore, dsRNA-mediated LvPT silencing inhibited WSSV gene expression and viral genome replication. However, downregulation of LvPT gene expression increased copies of AHPND-causing bacteria in shrimp digestive tract, and facilitated bacterial colonization in stomach. In conclusion, we speculated that LvPT might regulate bacterial colonization during AHPND, whereas in WSSV infection, LvPT silencing favored the host. Although recombinant LvPT had strong binding with WSSV, the precise role of LvPT in WSSV infection needs further investigation. These findings increased our understanding of host-pathogen interactions in AHPND and WSSV infection that can be applied in shrimp aquaculture for developing effective antibacterial and antiviral strategies.
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Affiliation(s)
- Yi-Lun Chen
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Ramya Kumar
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan; International Center for Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
| | - Chun-Hung Liu
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Han-Ching Wang
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan; International Center for Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan.
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18
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Liu Y, Xing K, Yan C, Zhou Y, Xu X, Sun Y, Zhang J. Transcriptome analysis of Neocaridina denticulate sinensis challenged by Vibrio parahemolyticus. Fish Shellfish Immunol 2022; 121:31-38. [PMID: 34628047 DOI: 10.1016/j.fsi.2021.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 06/26/2021] [Revised: 09/29/2021] [Accepted: 10/05/2021] [Indexed: 06/13/2023]
Abstract
As a common aquatic pathogen, Vibrio parahaemolyticus can cause a variety of diseases of shrimp, especially acute hepatopancreatic necrosis disease (AHPND), which leads to great losses to the aquaculture industry around the world. However, the molecular mechanism of V. parahaemolyticus infection is still unclear. Neocaridina denticulate sinensis is a kind of small ornamental shrimp that is popular in aquarium trade, and due to its tenacious vitality, rapid growth, high reproductive capacity, it is very suitable to be developed as an animal model for basic research on decapod crustaceans. Thus, in this paper, transcriptomes of N. denticulate sinensis hepatopancreas with or without V. parahaemolyticus injection were explored. The results showed that a total of 23,624 genes with the N50 of 2705 bp were obtained. Comparative transcriptomic analysis revealed 21,464 differentially expressed genes between the V. parahaemolyticus infected and non-infected group, of which, 11,127 genes were up-regulated and 10,337 genes were down-regulated. Functional enrichment analysis suggested that many DEGs enriched in immune related pathways, including MAPK signaling pathway, Phosphatidylinositol signaling system, Chemokine signaling pathway, Phagosome and Jak-STAT signaling pathway and so on. Eight genes were selected randomly for qRT-PCR to verify the transcriptome sequencing results and the results showed the expression of these genes were consistent with the transcriptome results. Our work provides a unique and important dataset that contributes to the understanding of the molecular mechanisms of the immune response to V. parahaemolyticus infection and may further provide the basis for the prevention and resolution of bacterial diseases.
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Affiliation(s)
- Yujie Liu
- School of Life Sciences, Institute of Life Sciences and Green Development, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Hebei University, Baoding, 071002, China
| | - Kefan Xing
- School of Life Sciences, Institute of Life Sciences and Green Development, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Hebei University, Baoding, 071002, China
| | - Congcong Yan
- School of Life Sciences, Institute of Life Sciences and Green Development, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Hebei University, Baoding, 071002, China
| | - Yongzhao Zhou
- School of Life Sciences, Institute of Life Sciences and Green Development, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Hebei University, Baoding, 071002, China
| | - Xuemei Xu
- School of Life Sciences, Institute of Life Sciences and Green Development, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Hebei University, Baoding, 071002, China
| | - Yuying Sun
- School of Life Sciences, Institute of Life Sciences and Green Development, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Hebei University, Baoding, 071002, China; Key Laboratory of Microbial Diversity Research and Application of Hebei Province, Hebei University, Baoding, 071002, China.
| | - Jiquan Zhang
- School of Life Sciences, Institute of Life Sciences and Green Development, Engineering Laboratory of Microbial Breeding and Preservation of Hebei Province, Hebei University, Baoding, 071002, China.
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Quiroz-Guzmán E, Cabrera-Stevens M, Sánchez-Paz A, Mendoza-Cano F, Encinas-García T, Barajas-Sandoval D, Gómez-Gil B, Peña-Rodríguez A. Effect of functional diets on intestinal microbiota and resistance to Vibrio parahaemolyticus causing acute hepatopancreatic necrosis disease ( AHPND) of Pacific white shrimp (Penaeus vannamei). J Appl Microbiol 2022; 132:2649-2660. [PMID: 35007373 DOI: 10.1111/jam.15448] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/29/2021] [Accepted: 01/06/2022] [Indexed: 11/26/2022]
Abstract
AIMS The present study evaluated the effect of four functional diets and a reference diet on the survival and intestinal bacterial community of shrimp Penaeus vannamei infected with AHPND. METHODS AND RESULTS After 42 days of feeding trail, shrimp were inoculated with a Vibrio parahaemolyticus (CIB-0018-3) carrying the plasmid encoding for the PirAB toxins responsible for AHPND. After 120 h post-infection (hpi), shrimp fed with a diet containing 2% of a mix with Curcuma longa and Lepidium meyenii (TuMa) and a diet containing 0.2% of vitamin C (VitC) showed a significantly higher survival (85%) compared to the remaining treatments (50-55%) (p<0.05). Infected shrimp fed with TuMa diet, showed a significant reduction of Vibrionales; and VitC diet promoted an increase of Alteromonadales. CONCLUSIONS Our findings suggest that the TuMa diet conferred protection against AHPND and could be attributed to a combined effect of antibacterial properties against Vibrionales, and promoting a desirable bacterial community in the shrimp intestine, while the VitC diet protection could be attributed to their antioxidant capacity and in a lower proportion to a bacterial modulation in shrimp gut. SIGNIFICANCE AND IMPACT OF THE STUDY Acute Hepatopancreatic Necrosis Disease (AHPND) is a devastating disease that significantly affects aquaculture production of shrimps. Therefore, the use of functional diets that promotes resistance to AHPND, represents a valuable tool to reduce the mortality of farmed shrimp.
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Affiliation(s)
- Eduardo Quiroz-Guzmán
- CONACYT - CIBNOR, Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, La Paz, B.C.S., 23096, México
| | - Mónica Cabrera-Stevens
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, La Paz, B.C.S., 23096, México
| | - Arturo Sánchez-Paz
- Laboratorio de Virología. Centro de Investigaciones Biológicas del Noroeste (CIBNOR), S.C. (Campus Hermosillo). Calle Hermosa 101. Fraccionamiento Los Ángeles. Hermosillo, Son. C.P., 83206, México
| | - Fernando Mendoza-Cano
- Laboratorio de Virología. Centro de Investigaciones Biológicas del Noroeste (CIBNOR), S.C. (Campus Hermosillo). Calle Hermosa 101. Fraccionamiento Los Ángeles. Hermosillo, Son. C.P., 83206, México
| | - Trinidad Encinas-García
- Laboratorio de Virología. Centro de Investigaciones Biológicas del Noroeste (CIBNOR), S.C. (Campus Hermosillo). Calle Hermosa 101. Fraccionamiento Los Ángeles. Hermosillo, Son. C.P., 83206, México
| | - Diana Barajas-Sandoval
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, La Paz, B.C.S., 23096, México
| | - Bruno Gómez-Gil
- Centro de Investigación en Alimentación y Desarrollo (CIAD), Unidad Mazatlán en Acuicultura y Manejo Ambiental. AP. 711, 82000, Mazatlán, Sinaloa, Mexico
| | - Alberto Peña-Rodríguez
- CONACYT - CIBNOR, Instituto Politécnico Nacional 195, Col. Playa Palo de Santa Rita Sur, La Paz, B.C.S., 23096, México
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20
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Shen H, Song T, Lu J, Qiu Q, Chen J, Xiong J. Shrimp AHPND Causing Vibrio anguillarum Infection: Quantitative Diagnosis and Identifying Antagonistic Bacteria. Mar Biotechnol (NY) 2021; 23:964-975. [PMID: 34739620 DOI: 10.1007/s10126-021-10079-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 08/17/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is one of the most common and serious diseases in shrimp aquaculture. Relevant works have focused on the gut microbiota-disease relationship when serious AHPND occurs. In contrast, little is known about how the gut microbiota responds to pathogen infection over AHPND progression, whereas this knowledge is fundamental to uncover the etiology of AHPND. Here, we explored the temporal succession of shrimp gut microbiota during Vibrio anguillarum (a causal pathogen of AHPND) challenge. The successful infection of V. anguillarum was confirmed by linearly increased abundance of the pathogen in the shrimp gut over AHPND progression. V. anguillarum infection caused an irreversible disruption in the shrimp gut microbiota, of which infection and hours post infection (hpi) respectively constrained 6.2% and 10.2% of variation in the data. Furthermore, the predicted functional pathways involved in immunity and metabolism significantly decreased, while those facilitating infectious diseases significantly enriched in the infected shrimp. Intriguingly, after ruling out the effect of background changes in gut microbiota, we identified 20 infection-discriminatory taxa that could be served as independent variables for accurately (89.4%) diagnosing V. anguillarum infection, even at the early infection stage, i.e., 24 hpi. Using a consensus network, we identified several Vibrio and Pseudoalteromonas taxa that directly antagonized V. anguillarum, following the Darwin's niche theory. This is one of the few attempts to identify gut bioindicators for diagnosing pathogen infection. In addition, the antagonistic commensals of V. anguillarum might be the candidate probiotics for preventing AHPND.
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Affiliation(s)
- Huiyu Shen
- State Key Laboratory for Managing Biotic and Chemical Threats To the Quality and Safety of Agro-Products, Ningbo University, Ningbo, 315211, China
- School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Tingting Song
- State Key Laboratory for Managing Biotic and Chemical Threats To the Quality and Safety of Agro-Products, Ningbo University, Ningbo, 315211, China
- School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Jiaqi Lu
- State Key Laboratory for Managing Biotic and Chemical Threats To the Quality and Safety of Agro-Products, Ningbo University, Ningbo, 315211, China
- School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Qiongfen Qiu
- School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Jiong Chen
- State Key Laboratory for Managing Biotic and Chemical Threats To the Quality and Safety of Agro-Products, Ningbo University, Ningbo, 315211, China
- School of Marine Sciences, Ningbo University, Ningbo, 315211, China
| | - Jinbo Xiong
- State Key Laboratory for Managing Biotic and Chemical Threats To the Quality and Safety of Agro-Products, Ningbo University, Ningbo, 315211, China.
- School of Marine Sciences, Ningbo University, Ningbo, 315211, China.
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21
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Ong JH, Wong WL, Wong FC, Chai TT. Targeting PirA vp and PirB vp Toxins of Vibrio parahaemolyticus with Oilseed Peptides: An In Silico Approach. Antibiotics (Basel) 2021; 10:1211. [PMID: 34680792 PMCID: PMC8532646 DOI: 10.3390/antibiotics10101211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2021] [Revised: 09/28/2021] [Accepted: 09/28/2021] [Indexed: 01/18/2023] Open
Abstract
Acute hepatopancreatic necrosis disease (AHPND), caused by PirAvp- and PirBvp-releasing Vibrio parahaemolyticus strains, has resulted in massive mortality in shrimp aquaculture. Excessive use of antibiotics for AHPND management has led to antibiotic resistance, highlighting the urgency to search for alternatives. Using an in silico approach, we aimed to discover PirAvp/PirBvp-binding peptides from oilseed meals as alternatives to antibiotics. To search for peptides that remain intact in the shrimp digestive tract, and therefore would be available for toxin binding, we focused on peptides released from tryptic hydrolysis of 37 major proteins from seeds of hemp, pumpkin, rape, sesame, and sunflower. This yielded 809 peptides. Further screening led to 24 peptides predicted as being non-toxic to shrimp, fish, and humans, with thermal stability and low water solubility. Molecular docking on the 24 peptides revealed six dual-target peptides capable of binding to key regions responsible for complex formation on both PirAvp and PirBvp. The peptides (ISYVVQGMGISGR, LTFVVHGHALMGK, QSLGVPPQLGNACNLDNLDVLQPTETIK, ISTINSQTLPILSQLR, PQFLVGASSILR, and VQVVNHMGQK) are 1139-2977 Da in mass and 10-28 residues in length. Such peptides are potential candidates for the future development of peptide-based anti-AHPND agents which potentially mitigate V. parahaemolyticus pathogenesis by intercepting PirAvp/PirBvp complex formation.
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Affiliation(s)
- Joe-Hui Ong
- Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, Malaysia; (J.-H.O.); (F.-C.W.)
| | - Wey-Lim Wong
- Department of Biological Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, Malaysia;
- Center for Agriculture and Food Research, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, Malaysia
| | - Fai-Chu Wong
- Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, Malaysia; (J.-H.O.); (F.-C.W.)
- Center for Agriculture and Food Research, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, Malaysia
| | - Tsun-Thai Chai
- Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, Malaysia; (J.-H.O.); (F.-C.W.)
- Center for Agriculture and Food Research, Universiti Tunku Abdul Rahman, Jalan Universiti, Bandar Barat, Kampar 31900, Perak, Malaysia
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22
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De Los Santos MV, Sánchez-Salgado JL, Pereyra A, Zenteno E, Vibanco-Pérez N, Ramos-Clamont Montfort G, Soto-Rodriguez SA. The Vibrio parahaemolyticus subunit toxin PirB vp recognizes glycoproteins on the epithelium of the Penaeus vannamei hepatopancreas. Comp Biochem Physiol B Biochem Mol Biol 2021; 257:110673. [PMID: 34530120 DOI: 10.1016/j.cbpb.2021.110673] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 12/20/2022]
Abstract
Vibrio parahaemolyticus toxin PirABvp is the major virulence factor exotoxin that contributes to the disruption of the hepatopancreatic epithelium in acute hepatopancreatic necrosis disease in shrimp. The PirBvp subunit is a lectin that recognizes amino sugars; however, its potential role in recognition of the hepatopancreas has not been identified. In the present work, we identified the cellular receptor for PirBvp in the shrimp hepatopancreas. A ligand blot assay of hepatopancreas lysate showed that the PirBvp subunit recognizes two glycoprotein bands of 60 and 70 kDa (Gc60 and Gc70). The hepatopancreas lysate was fractionated by anion-exchange chromatography, and the three main fractions obtained contained the recognized Gc60 and Gc70 protein bands. LC-MS/MS indicated that beta-hexosaminidases subunit beta and mucin-like 5 AC corresponded to the 60 and 70 kDa bands, respectively, which seem to be expressed in the epithelial cells of the hepatopancreas. Endoglycosidase treatment of hepatopancreas lysate with the O-glycosidase from Enterococcus faecalis, inhibits the binding of PirBvp. Altogether, these results suggest the relevance of the interaction of PirBvp with the hepatopancreas in the pathogenesis of acute hepatopancreatic necrosis disease in shrimp.
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Affiliation(s)
- Marcelo Victorio De Los Santos
- Laboratorio de Investigación en Biología Molecular e Inmunología, Unidad Académica de Ciencias Químico Biológicas y Farmacéuticas, Universidad Autónoma de Nayarit, Ciudad de la Cultura, Tepic, Nayarit 63190, Mexico; Laboratorio de Bacteriología, Centro de Investigación en Alimentación y Desarrollo, A.C, Unidad de Acuacultura y Manejo Ambiental, Av. Sábalo-Cerritos S/N A.P. 711, Mazatlán, Sinaloa 82112, Mexico.
| | - José Luis Sánchez-Salgado
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, CDMX, Mexico.
| | - Ali Pereyra
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, CDMX, Mexico.
| | - Edgar Zenteno
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, CDMX, Mexico.
| | - Norberto Vibanco-Pérez
- Laboratorio de Investigación en Biología Molecular e Inmunología, Unidad Académica de Ciencias Químico Biológicas y Farmacéuticas, Universidad Autónoma de Nayarit, Ciudad de la Cultura, Tepic, Nayarit 63190, Mexico.
| | - Gabriela Ramos-Clamont Montfort
- Laboratorio de Función y Funcionalidad de Proteínas, Centro de Investigación en Alimentación y Desarrollo, A. C., Carretera Gustavo Enrique Astiazarán Rosas No. 46, A.P. 1735, Hermosillo, Sonora 83304, Mexico.
| | - Sonia A Soto-Rodriguez
- Laboratorio de Bacteriología, Centro de Investigación en Alimentación y Desarrollo, A.C, Unidad de Acuacultura y Manejo Ambiental, Av. Sábalo-Cerritos S/N A.P. 711, Mazatlán, Sinaloa 82112, Mexico.
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23
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Kumar V, Roy S, Behera BK, Bossier P, Das BK. Acute Hepatopancreatic Necrosis Disease ( AHPND): Virulence, Pathogenesis and Mitigation Strategies in Shrimp Aquaculture. Toxins (Basel) 2021; 13:524. [PMID: 34437395 PMCID: PMC8402356 DOI: 10.3390/toxins13080524] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 07/20/2021] [Accepted: 07/22/2021] [Indexed: 02/06/2023] Open
Abstract
Shrimp, as a high-protein animal food commodity, are one of the fastest growing food producing sectors in the world. It has emerged as a highly traded seafood product, currently exceeding 8 MT of high value. However, disease outbreaks, which are considered as the primary cause of production loss in shrimp farming, have moved to the forefront in recent years and brought socio-economic and environmental unsustainability to the shrimp aquaculture industry. Acute hepatopancreatic necrosis disease (AHPND), caused by Vibrio spp., is a relatively new farmed penaeid shrimp bacterial disease. The shrimp production in AHPND affected regions has dropped to ~60%, and the disease has caused a global loss of USD 43 billion to the shrimp farming industry. The conventional approaches, such as antibiotics and disinfectants, often applied for the mitigation or cure of AHPND, have had limited success. Additionally, their usage has been associated with alteration of host gut microbiota and immunity and development of antibiotic resistance in bacterial pathogens. For example, the Mexico AHPND-causing V. parahaemolyticus strain (13-306D/4 and 13-511/A1) were reported to carry tetB gene coding for tetracycline resistance gene, and V. campbellii from China was found to carry multiple antibiotic resistance genes. As a consequence, there is an urgent need to thoroughly understand the virulence mechanism of AHPND-causing Vibrio spp. and develop novel management strategies to control AHPND in shrimp aquaculture, that will be crucially important to ensure food security in the future and offer economic stability to farmers. In this review, the most important findings of AHPND are highlighted, discussed and put in perspective, and some directions for future research are presented.
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Affiliation(s)
- Vikash Kumar
- Aquatic Environmental Biotechnology and Nanotechnology (AEBN) Division, ICAR-Central Inland Fisheries Research Institute (CIFRI), Barrackpore 700120, India; (S.R.); (B.K.B.); (B.K.D.)
- Laboratory of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, B-9000 Ghent, Belgium;
| | - Suvra Roy
- Aquatic Environmental Biotechnology and Nanotechnology (AEBN) Division, ICAR-Central Inland Fisheries Research Institute (CIFRI), Barrackpore 700120, India; (S.R.); (B.K.B.); (B.K.D.)
- Laboratory of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, B-9000 Ghent, Belgium;
| | - Bijay Kumar Behera
- Aquatic Environmental Biotechnology and Nanotechnology (AEBN) Division, ICAR-Central Inland Fisheries Research Institute (CIFRI), Barrackpore 700120, India; (S.R.); (B.K.B.); (B.K.D.)
| | - Peter Bossier
- Laboratory of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, B-9000 Ghent, Belgium;
| | - Basanta Kumar Das
- Aquatic Environmental Biotechnology and Nanotechnology (AEBN) Division, ICAR-Central Inland Fisheries Research Institute (CIFRI), Barrackpore 700120, India; (S.R.); (B.K.B.); (B.K.D.)
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24
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Chen YL, Kumar R, Liu CH, Wang HC. In Litopenaeus vannamei, the cuticular chitin-binding proteins LvDD9A and LvDD9B retard AHPND pathogenesis but facilitate WSSV infection. Dev Comp Immunol 2021; 120:103999. [PMID: 33444644 DOI: 10.1016/j.dci.2021.103999] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 11/16/2020] [Revised: 01/04/2021] [Accepted: 01/07/2021] [Indexed: 06/12/2023]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is a serious bacterial disease caused by V. parahaemolyticus strains which contain a virulent plasmid that encodes a binary pore-forming Pir toxin. Typically, these AHPND-causing bacteria first colonize in the shrimp stomach and then later cross to the hepatopancreas. To do this, they must pass through structural barriers which include the pliant cuticular lining of the stomach lumen. A previous transcriptomic study of shrimp challenged with the virulent 5HP strain of V. parahaemolyticus found significant upregulation of a contig associated with the cuticular proteins LvDD9A and LvDD9B. Here, we confirmed that the mRNA levels of these two genes were significantly upregulated not only in 5HP-infected shrimp, but also in the stomach of shrimp challenged with the white spot syndrome virus (WSSV). Using dsRNA-mediated gene silencing, we found that AHPND-causing bacteria migrated to the hepatopancreas within 3 h of AHPND infection in LvDD9A/B-silenced shrimp. Shrimp shell hardness of LvDD9A/B-silenced shrimp was also significantly decreased. Conversely, we found that silencing of LvDD9A/B significantly inhibited both WSSV gene expression and genome replication. Taken together, our data suggests that LvDD9A and LvDD9B are involved in both AHPND and WSSV infection. However, in AHPND, these cuticular proteins help to prevent bacterial migration from the stomach to the hepatopancreas, whereas in WSSV infection, they facilitate viral gene expression and genome replication.
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Affiliation(s)
- Yi-Lun Chen
- Department of Biotechnology and Bioindustry Sciences, College of Biosciences and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan
| | - Ramya Kumar
- Department of Biotechnology and Bioindustry Sciences, College of Biosciences and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan; International Center for the Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, 701, Taiwan
| | - Chun-Hung Liu
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Han-Ching Wang
- Department of Biotechnology and Bioindustry Sciences, College of Biosciences and Biotechnology, National Cheng Kung University, Tainan, 701, Taiwan; International Center for the Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, 701, Taiwan.
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Paopradit P, Tansila N, Surachat K, Mittraparp-arthorn P. Vibrio alginolyticus influences quorum sensing-controlled phenotypes of acute hepatopancreatic necrosis disease-causing Vibrio parahaemolyticus. PeerJ 2021; 9:e11567. [PMID: 34141494 PMCID: PMC8176930 DOI: 10.7717/peerj.11567] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 05/15/2021] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Acute hepatopancreatic necrosis syndrome (AHPND) caused by Vibrio parahaemolyticus strain (VPAHPND) impacts the shrimp industry worldwide. With the increasing problem of antibiotic abuse, studies on quorum sensing (QS) system and anti-QS compounds bring potential breakthroughs for disease prevention and treatment. METHODS In this study, the cell-free culture supernatant (CFCS) and its extract of V. alginolyticus BC25 were investigated for anti-QS activity against a reporter bacteria, Chromobacterium violaceum DMST46846. The effects of CFCS and/ or extract on motility, biofilm formation and extracellular polymeric substances (EPSs) of VPAHPND PSU5591 were evaluated. Moreover, the effects of V. alginolyticus BC25 on virulence of VPAHPND PSU5591 were investigated by shrimp challenge test. The potentially active anti-QS compounds presented in the extract and effect on gene expression of VPAHPND PSU5591 were identified. RESULTS The CFCS of V. alginolyticus BC25 and its extract showed a significant anti-QS activity against the reporter bacteria as well as swimming and swarming motilities, biofilms, and EPSs production by VPAHPND PSU5591. Transcriptome analysis revealed that V. alginolyticus BC25 extract significantly reduced the flagella genes involved in biofilm formation and iron-controlled virulence regulatory gene of VPAHPND PSU5591. Whereas, the LuxR family transcriptional regulator gene, c-factor, a cell-cell signaling gene, and capsular polysaccharide were up-regulated. The potentially active anti-QS compounds identified in extract were Cyclo-(L-Leu-L-Pro), and Cyclo-(L-Phe-L-Pro). Furthermore, V. alginolyticus BC25 enhanced disease resistance against VPAHPND PSU5591 in tested shrimp larvae. CONCLUSION These findings suggest that V. alginolyticus BC25 could provide natural anti-QS and anti-biofilms compounds and has great ability to be used as biocontrol agent against VPAHPND infection in shrimp aquaculture.
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Affiliation(s)
- Panida Paopradit
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Natta Tansila
- Faculty of Medical Technology, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Komwit Surachat
- Division of Computational Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Molecular Evolution and Computational Biology Research Unit, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Pimonsri Mittraparp-arthorn
- Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
- Molecular Evolution and Computational Biology Research Unit, Prince of Songkla University, Hat Yai, Songkhla, Thailand
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26
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Mai HN, Caro LFA, Cruz-Flores R, White BN, Dhar AK. Differentially Expressed Genes in Hepatopancreas of Acute Hepatopancreatic Necrosis Disease Tolerant and Susceptible Shrimp ( Penaeus vannamei). Front Immunol 2021; 12:634152. [PMID: 34054803 PMCID: PMC8155527 DOI: 10.3389/fimmu.2021.634152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 04/15/2021] [Indexed: 11/13/2022] Open
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is a lethal disease in marine shrimp that has caused large-scale mortalities in shrimp aquaculture in Asia and the Americas. The etiologic agent is a pathogenic Vibrio sp. carrying binary toxin genes, pirA and pirB in plasmid DNA. Developing AHPND tolerant shrimp lines is one of the prophylactic approaches to combat this disease. A selected genetic line of Penaeus vannamei was found to be tolerant to AHPND during screening for disease resistance. The mRNA expression of twelve immune and metabolic genes known to be involved in bacterial pathogenesis were measured by quantitative RT-PCR in two populations of shrimp, namely P1 that showed susceptibility to AHPND, and P2 that showed tolerance to AHPND. Among these genes, the mRNA expression of chymotrypsin A (ChyA) and serine protease (SP), genes that are involved in metabolism, and crustin-P (CRSTP) and prophenol oxidase activation system 2 (PPAE2), genes involved in bacterial pathogenesis in shrimp, showed differential expression between the two populations. The differential expression of these genes shed light on the mechanism of tolerance against AHPND and these genes can potentially serve as candidate markers for tolerance/susceptibility to AHPND in P. vannamei. This is the first report of a comparison of the mRNA expression profiles of AHPND tolerant and susceptible lines of P. vannamei.
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Affiliation(s)
- Hung N Mai
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, Tucson, AZ, United States
| | - Luis Fernando Aranguren Caro
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, Tucson, AZ, United States
| | - Roberto Cruz-Flores
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, Tucson, AZ, United States
| | - Brenda Noble White
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, Tucson, AZ, United States
| | - Arun K Dhar
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, Tucson, AZ, United States
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Duong ND, Nguyen-Phuoc KH, Do KYT, Nguyen NTT, Tran TL, Tran-Van H. Production of polyclonal antibody against the recombinant PirB vp protein of Vibrio parahaemolyticus. J Genet Eng Biotechnol 2021; 19:70. [PMID: 33977321 PMCID: PMC8113428 DOI: 10.1186/s43141-021-00172-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/21/2021] [Indexed: 11/10/2022]
Abstract
BACKGROUND Acute hepatopancreatic necrosis disease (AHPND) is caused by toxin-producing strains of Vibrio parahaemolyticus which contain deadly binary toxins PirAvp and PirBvp encoded in pVA1 plasmid. The polyclonal antibodies against PirBvp protein could be used to develop immunochromatographic test strip for in-field diagnosis of AHPND. RESULTS In this study, PirBvp gene was amplified, cloned, and expressed in E. coli. The expressed protein was detected by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and Western blot probed with 6xHis antibodies. Then, the recombinant PirBvp (rPirBvp) was purified using Ni-Sepharose column. Rabbits were immunized with the purified rPirBvp, and produced antibodies were analyzed using Ouchterlony double immunodiffusion. The antibody titration and antibody purification were performed by ELISA and affinity chromatography, respectively. Finally, antibody specificity and sensitivity were evaluated by dot blotting. The present study showed a high titer of polyclonal antibodies in rabbit serum after immunization and the titer increased steadily during the immunization schedule. The highest titer of antibody reached up to 2,560,000 with LOD of 0.1 ng/mL. The purified antibodies showed no cross-reactivity with proteins from other Vibrio species, and the detection threshold ranged from 6.25 to 12.5 ng toxin/dot. CONCLUSION This study highlights the production of high titer and specific polyclonal antibodies as an initial material towards the development of lateral-flow strip test.
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Affiliation(s)
- Ngoc-Diem Duong
- University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
- Pasteur Institute, 167 Pasteur Street, Vo Thi Sau Ward, District 3, Ho Chi Minh City, Vietnam
| | - Khai-Hoan Nguyen-Phuoc
- University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Kim-Yen Thi Do
- Pasteur Institute, 167 Pasteur Street, Vo Thi Sau Ward, District 3, Ho Chi Minh City, Vietnam
| | - Nguyet-Thu Thi Nguyen
- Pasteur Institute, 167 Pasteur Street, Vo Thi Sau Ward, District 3, Ho Chi Minh City, Vietnam
| | - Thuoc Linh Tran
- University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - Hieu Tran-Van
- University of Science, 227 Nguyen Van Cu Street, Ward 4, District 5, Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
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Zhang D, Bader TJ, Lange MD, Shoemaker CA, Beck BH. Toxicity of recombinant PirA and PirB derived from Vibrio parahaemolyticus in shrimp. Microb Pathog 2021; 155:104886. [PMID: 33915208 DOI: 10.1016/j.micpath.2021.104886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 10/31/2020] [Revised: 03/07/2021] [Accepted: 03/09/2021] [Indexed: 11/26/2022]
Abstract
Acute hepatopancreatic necrosis disease (AHPND), caused by emerging strains of Vibrio Parahaemolyticus, is of concern in shrimp aquaculture. Secreted proteins PirA and PirB, encoded by a plasmid harbored in V. parahaemolyticus, were determined to be the major virulence factors that induce AHPND. To better understand pathogenesis associated with PirA and PirB, recombinant proteins rPirA and rPirB were produced to evaluate their relative toxicities in shrimp. By challenging shrimp at concentration of 3 μM with reverse gavage method, rPirA and rPirB (approximately 0.4 and 1.5 μg per g of body weight, respectively) caused 27.8 ± 7.8% and 33.3 ± 13.6% mortality, respectively; combination of 3 μM rPirA and rPirB resulted in 88.9 ± 7.9% mortality. Analysis of protein mobility in native gel revealed that rPirB was apparently in the form of monomer while rPirA was oligomerized as an octamer-like macromolecule, suggesting that inter- and intra-molecular interactions between rPirA and rPirB enhanced the toxic effect. An attempt to block or reduce rPirA activity with a putative receptor, N-acetyl-galactosamine, was unsuccessful, implying that remodeling analysis of PirA molecule, such as the octamer observed in this study, is necessary. Results of this study provided new insight into toxic mechanism of PirA and PirB and shall help design strategic antitoxin methods against AHPND in shrimp.
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Affiliation(s)
- Dunhua Zhang
- Aquatic Animal Health Research Unit, Agricultural Research Service, USDA 990 Wire Road, Auburn, AL, 36832, USA.
| | - Troy J Bader
- Aquatic Animal Health Research Unit, Agricultural Research Service, USDA 990 Wire Road, Auburn, AL, 36832, USA
| | - Miles D Lange
- Aquatic Animal Health Research Unit, Agricultural Research Service, USDA 990 Wire Road, Auburn, AL, 36832, USA
| | - Craig A Shoemaker
- Aquatic Animal Health Research Unit, Agricultural Research Service, USDA 990 Wire Road, Auburn, AL, 36832, USA
| | - Benjamin H Beck
- Aquatic Animal Health Research Unit, Agricultural Research Service, USDA 990 Wire Road, Auburn, AL, 36832, USA
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29
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Kumar R, Tung TC, Ng TH, Chang CC, Chen YL, Chen YM, Lin SS, Wang HC. Metabolic Alterations in Shrimp Stomach During Acute Hepatopancreatic Necrosis Disease and Effects of Taurocholate on Vibrio parahaemolyticus. Front Microbiol 2021; 12:631468. [PMID: 33959104 PMCID: PMC8093816 DOI: 10.3389/fmicb.2021.631468] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 03/10/2021] [Indexed: 12/27/2022] Open
Abstract
Acute hepatopancreatic necrosis disease (AHPND), a recently emerged bacterial shrimp disease, has increased shrimp mortality and caused huge economic losses in many Asian countries. However, molecular factors underlying pathogenesis of this disease remain largely unknown. Our objective was to characterize metabolic alterations in shrimp stomach during AHPND and determine effects of taurocholate on AHPND-causing Vibrio parahaemolyticus. Based on metabolomics, pathways for lipid metabolism and for primary bile acid (BA) synthesis were majorly affected following AHPND infection. Bile acid metabolites, namely taurocholate, were downregulated in the metabolomics database. This prompted us to study effects of taurocholate on biofilm formation, PirAB vp toxin release and biofilm detachment capabilities in AHPND-causing V. parahaemolyticus. Treatment of this bacterium with high concentration of taurocholate, a primary bile acid, induced biofilm formation, PirAB vp toxin release and facilitated the dispersion of bacterial cells. Taken together, our findings suggest that AHPND infection can affect the lipid metabolites in shrimp stomach, and further suggest that the primary bile acid taurocholate is important for the virulence of AHPND-causing V. parahaemolyticus.
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Affiliation(s)
- Ramya Kumar
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan.,International Center for Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
| | - Teng-Chun Tung
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Tze Hann Ng
- International Center for Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan.,Institute for Evolution and Biodiversity, University of Münster, Münster, Germany
| | - Che-Chih Chang
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Lun Chen
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Yi-Min Chen
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan.,International Center for Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Shun Lin
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Han-Ching Wang
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan.,International Center for Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
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30
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Mai HN, Aranguren Caro LF, Cruz-Flores R, Dhar AK. Development of a Recombinase Polymerase Amplification (RPA) assay for acute hepatopancreatic necrosis disease ( AHPND) detection in Pacific white shrimp (Penaeus vannamei). Mol Cell Probes 2021; 57:101710. [PMID: 33722662 DOI: 10.1016/j.mcp.2021.101710] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 02/23/2021] [Accepted: 03/08/2021] [Indexed: 11/17/2022]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is currently the most important bacterial disease of shrimp that has caused enormous losses to the shrimp industry worldwide. The causative agent of AHPND are Vibrio spp. Carrying plasmids containing the pirA and pirB genes which encode binary toxins, PirAB. Currently, AHPND is mostly diagnosed by PCR-based platforms which require the use of sophisticated laboratory instrumentation and are not suitable for a point-of-care diagnostics. Therefore, the availability of an alternative method based on isothermal amplification would be suitable for AHPND detection outside a laboratory setting and extremely useful at a pond side location. Isothermal amplification is based on the nucleic acid amplification at a single temperature and does not require the use of a thermal cycler. In this study, we developed an isothermal Recombinase Polymerase Amplification (RPA) assay for AHPND detection targeting both pirA and pirB genes, simultaneously and evaluated the specificity and sensitivity of the assay. The assay could detect AHPND without any cross-reaction with other microbial pathogens and Specific Pathogen Free (SPF) shrimp. The limit of detection of the assay was 5 copies of pirAB genes. To evaluate the reliability of the assay in detecting AHPND, DNA from Penaeus vannamei shrimp displaying acute and chronic infection were analyzed by the RPA assay and the results were compared with SYBR Green real-time PCR assay. While there was a 100% conformity between the two assay while detecting acute phase infection, RPA appeared to be more sensitive in detecting chronic phase infection. The data suggest that RPA assay described here would be a reliable method in detecting AHPND outside a standard laboratory setting.
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Affiliation(s)
- Hung Nam Mai
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, 1117 E Lowell St, Tucson, AZ 85721, USA
| | - Luis F Aranguren Caro
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, 1117 E Lowell St, Tucson, AZ 85721, USA
| | - Roberto Cruz-Flores
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, 1117 E Lowell St, Tucson, AZ 85721, USA
| | - Arun K Dhar
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, 1117 E Lowell St, Tucson, AZ 85721, USA.
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31
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Pudgerd A, Kruangkum T, Sritunyalucksana K, Vanichviriyakit R, Imsonpang S, Chotwiwatthanakun C. Immunopathogenesis of hematopoietic tissues in response to Vibrio parahaemolyticus (VP AHPND) infection in Macrobrachium rosenbergii. Fish Shellfish Immunol 2021; 110:10-22. [PMID: 33383176 DOI: 10.1016/j.fsi.2020.12.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 08/15/2020] [Revised: 11/14/2020] [Accepted: 12/23/2020] [Indexed: 06/12/2023]
Abstract
In crustacean, hemocytes are known as crucial components of crustaceans' innate immunity against pathogens. Drastic hemocytes reduction during infectious disease is apparently related to disease severity and calls for a health status evaluation and aquaculture management. The molecular pathogenesis of hemocytes loss during bacterial infection was elucidated with VPAHPND challenged in M. rosenbergii. We report herein a correlation between hemocyte loss and the pathogenicity and aggressive immune response in hematopoietic tissues of moribund M. rosenbergii. In this study, adult freshwater prawn was administered an LC50 dose of VPAHPND; bacterial clearance ensued, and success was reached within 24 h. Hemocytes increased in survival, yet drastically decreased in moribund prawn. Pathological analysis of hematopoietic tissue of moribund prawn showed apparent abnormal signs, including the presence of bacteria, a small number of mitotic cells, cellular swelling, loosening of connective tissue, and karyorrhectic nuclei cells. A significant upregulation of a core apoptotic machinery gene, caspase-3, was detected in hematopoietic tissue of moribund shrimp, but not in those of Escherichia coli DH5α (non-pathogenic bacteria) and VPAHPND survival prawn. The highest level was found in the moribund group, which confirms the occurrence of apoptosis in this hematopoietic tissue. Further, our results suggest that hematopoietic tissue damage may arise from inflammation triggered by an aggressive immune response. Immune activation was indicated by the comparison of immune-related gene expression between controls, E. coli (DH5α)-infected (non-pathogenic), and VPAHPND-infected survival groups with moribund prawn. RT-PCR revealed a significant upregulation of all genes in hematopoietic tissues and hemocytes within 6-12 h and declined by 24 h. This evident related to the almost VPAHPND are clearance in survival and E. coli (DH5α) challenged group in contrast with drastic high expression was determined in moribund group. We conclude that a reduction of renewing circulating hemocytes in fatally VPAHPND-infected prawn was caused by an acute self-destructive immune response by hematopoietic cells.
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Affiliation(s)
- Arnon Pudgerd
- Division of Anatomy, School of Medical Sciences, University of Phayao, Maeka, Muang, Phayao, 56000, Thailand; Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand
| | - Thanapong Kruangkum
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand; Department of Anatomy, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand
| | - Kallaya Sritunyalucksana
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand; Shrimp-pathogen interaction (SPI) Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA), Yothi Office, Rama VI Rd., Bangkok, 10400, Thailand
| | - Rapeepun Vanichviriyakit
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand; Department of Anatomy, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand
| | - Supapong Imsonpang
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand; Department of Anatomy, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand
| | - Charoonroj Chotwiwatthanakun
- Center of Excellence for Shrimp Molecular Biology and Biotechnology (Centex Shrimp), Faculty of Science, Mahidol University, Faculty of Science, Mahidol University, Rama VI Rd., Bangkok, 10400, Thailand; Mahidol University, Nakhonsawan Campus, Nakhonsawan, 60130, Thailand.
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32
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Nguyen-Phuoc KH, Duong ND, Phan TV, Do KYT, Nguyen NTT, Tran TL, Tran-Van H. Generation and evaluation of polyclonal antibodies specific for ToxA from Vibrio parahaemolyticus causing acute hepatopancreatic necrosis disease ( AHPND) in shrimp. Mol Biol Res Commun 2021; 10:23-32. [PMID: 33681394 PMCID: PMC7936389 DOI: 10.22099/mbrc.2020.38774.1561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Acute Hepatopancreatic Necrosis Disease (AHPND) is a newly emerging shrimp disease with mortality up to 100 percent caused by Vibrio parahaemolyticus which carries a plasmid encoding for two toxins, ToxA and ToxB. In 2013, the Global Aquaculture Alliance (GAA) estimated shrimp farming decline in Asia accounted for 1-billion US dollar lost. Currently, diagnosis using PCR method does not meet the demand of in situ detection, which is based on antigen-antibody interaction, has not been developed yet. In this present study, we proceeded to create the toxin and its antibody for lateral flow development. First, recombinant toxin ToxA was generated by gene manipulation. After that, purified ToxA was used to immunize rabbits. Finally, antisera from rabbits and protein-A purified antibodies were evaluated for titer, specificity, and detection threshold. Results showed that recombinant ToxA was overexpressed in soluble fraction at 37oC with 1mM IPTG. Purification by affinity chromatography was able to isolate recombinant ToxA with the purity up to 94.49%. In ELISA experiment, the immunized antisera reached a titer of up to 1/5,210,000 with 1µg/ml of antigen, and detection threshold was 100ng recombinant toxin. After purification, the detection threshold of purified polyclonal antibodies was 25ng toxin per dot. These results laid a groundwork for the development of AHPND detection kit based on antigen - antibody interactions.
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Affiliation(s)
- Khai-Hoan Nguyen-Phuoc
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh, Vietnam.,Vietnam National University, Ho Chi Minh, Vietnam.,First authorship shared
| | - Ngoc-Diem Duong
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh, Vietnam.,Vietnam National University, Ho Chi Minh, Vietnam.,Pasteur Institute in Ho Chi Minh City, Vietnam.,First authorship shared
| | - Thach Van Phan
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh, Vietnam.,Vietnam National University, Ho Chi Minh, Vietnam
| | | | | | - Thuoc Linh Tran
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh, Vietnam.,Vietnam National University, Ho Chi Minh, Vietnam
| | - Hieu Tran-Van
- Department of Molecular and Environmental Biotechnology, Faculty of Biology and Biotechnology, University of Science, Ho Chi Minh, Vietnam.,Vietnam National University, Ho Chi Minh, Vietnam
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33
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Zheng Z, Li R, Aweya JJ, Yao D, Wang F, Li S, Tuan TN, Zhang Y. The PirB toxin protein from Vibrio parahaemolyticus induces apoptosis in hemocytes of Penaeus vannamei. Virulence 2021; 12:481-492. [PMID: 33487106 PMCID: PMC7834086 DOI: 10.1080/21505594.2021.1872171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is a major debilitating disease that causes massive shrimp death resulting in substantial economic losses in shrimp aquaculture. The Pir toxin proteins secreted by a unique strain of Vibrio parahaemolyticus play an essential role in the pathogenesis of AHPND. At present, most studies on the effects of Pir toxin proteins in shrimp focus on digestive tissues or organs such as hepatopancreas, stomach, etc., with none on the immune organs. In the present study, two recombinant Pir toxin proteins (rPirA and rPirB) of V. parahaemolyticus were expressed with rPirB shown to enter shrimp hemocytes. Employing pull-down and LC-MS/MS analysis, GST-rPirB was found to interact with 13 proteins in hemocytes, including histone H3 and histone H4 and among which histone H4 had the highest protein score. Further analysis using GST pull-down and Far-Western blot analysis revealed that rPirB could interact with histone H4. In addition, using the purified nucleosome protein from Drosophila S2 cells, it was found that PirB protein could specifically bind to histones. When flow cytometry was applied, it was observed that the interaction between PirB and histones in shrimp hemocytes induces apoptosis, which results in the dephosphorylation of Serine 10 in histone H3. Collectively, the current study shows that in addition to its effect on the digestive tract of shrimp, the PirB toxin protein interacts with histones to affect the phosphorylation of histone H3-S10, thereby inducing apoptosis.
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Affiliation(s)
- Zhou Zheng
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University , Shantou, China.,STU-UMT Joint Shellfish Research Laboratory, Shantou University , Shantou, China
| | - Ruiwei Li
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University , Shantou, China.,STU-UMT Joint Shellfish Research Laboratory, Shantou University , Shantou, China
| | - Jude Juventus Aweya
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University , Shantou, China.,STU-UMT Joint Shellfish Research Laboratory, Shantou University , Shantou, China
| | - Defu Yao
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University , Shantou, China.,STU-UMT Joint Shellfish Research Laboratory, Shantou University , Shantou, China
| | - Fan Wang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University , Shantou, China.,STU-UMT Joint Shellfish Research Laboratory, Shantou University , Shantou, China
| | - Shengkang Li
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University , Shantou, China.,STU-UMT Joint Shellfish Research Laboratory, Shantou University , Shantou, China
| | - Tran Ngoc Tuan
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University , Shantou, China.,STU-UMT Joint Shellfish Research Laboratory, Shantou University , Shantou, China
| | - Yueling Zhang
- Department of Biology and Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University , Shantou, China.,STU-UMT Joint Shellfish Research Laboratory, Shantou University , Shantou, China.,Southern Marine Science and Engineering Guangdong Laboratory , Guangzhou, China
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Lazarte JMS, Kim YR, Lee JS, Chun JH, Kim SW, Jung JW, Kim J, Kayansamruaj P, Thompson KD, Kim H, Jung TS. Passive Immunization with Recombinant Antibody VLRB-PirA vp/PirB vp-Enriched Feeds against Vibrio parahaemolyticus Infection in Litopenaeus vannamei Shrimp. Vaccines (Basel) 2021; 9:55. [PMID: 33467013 DOI: 10.3390/vaccines9010055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 11/17/2022] Open
Abstract
The causative agent of acute hepatopancreatic necrosis disease (AHPND) is the bacterium, Vibrio parahaemolyticus, which secretes toxins into the gastrointestinal tract of its host. Vibrio parahaemolyticus toxins A and B (PirAvp/PirBvp) have been implicated in the pathogenesis of this disease, and are, therefore, the focus of studies developing treatments for AHPND. We previously produced recombinant antibodies based on the hagfish variable lymphocyte receptor B (VLRB) capable of neutralizing some viruses, suggesting that this type of antibody may have a potential application for treatment of AHPND. Here, recombinant PirAvp/PirBvp, produced using a bacterial expression system, were used as antigens to screen a hagfish VLRB cDNA library to obtain PirAvp/PirBvp-specific antibodies. A cell line secreting these antibodies was established by screening and cloning the DNA extracted from hagfish B cells. Supernatants collected from cells secreting the PirAvp/PirBvp antibodies were collected and concentrated, and used to passively immunize shrimp to neutralize the toxins PirAvp or PirBvp associated with AHPND. Briefly, 10 μg of PirAvp and PirBvp antibodies, 7C12 and 9G10, respectively, were mixed with the shrimp feed, and fed to shrimp for three days consecutive days prior to experimentally infecting the shrimp with V. parahaemolyticus (containing toxins A and B), and resulting mortalities recorded for six days. Results showed significantly higher level of survival in shrimp fed with the PirBvp-9G10 antibody (60%) compared to the group fed the PirAvp-7C12 antibody (3%) and the control group (0%). This suggests that VLRB antibodies may be a suitable alternative to immunoglobulin-based antibodies, as passive immunization treatments for effective management of AHPND outbreaks within shrimp farms.
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Yang Q, Fu S, Zou P, Hao J, Wei D, Xie G, Huang J. Coordination of primary metabolism and virulence factors expression mediates the virulence of Vibrio parahaemolyticus towards cultured shrimp (Penaeus vannamei). J Appl Microbiol 2020; 131:50-67. [PMID: 33151560 DOI: 10.1111/jam.14922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 07/30/2020] [Revised: 10/15/2020] [Accepted: 11/02/2020] [Indexed: 12/12/2022]
Abstract
AIMS Acute hepatopancreatic necrosis disease (AHPND) caused by Vibrio parahaemolyticus has emerged as a severe bacterial disease of cultured shrimp. To identify the key virulence factors, two AHPND-causing V. parahaemolyticus (VpAHPND ) strains (123 and 137) and two non-VpAHPND strains (HZ56 and ATCC 17082) were selected. METHODS AND RESULTS Challenge tests showed that the four strains exhibited different virulence towards shrimp with cumulative mortalities at 48 h postinfection (hpi) ranging from 10 to 92%. The expression of pirABVP in strain 123 and 137 was not significantly different. Genomic analysis revealed that the two VpAHPND strains contain a plasmid with the PirABVP toxins (pirABVP ) flanked by the insertion sequence (ISVal1) that has been identified in various locations of chromosomes in VpAHPND strains. The two VpAHPND strains possessed almost identical virulence factors, while ISVal1 disrupted three genes related to flagellar motility in strain 137. Phenotype assay showed that strain 123 possessed the highest growth rate and swimming motility, followed by strain 137, suggesting that the disruption of essential genes mediated by ISVal1 significantly affected the virulence level. Transcriptome analysis of two VpAHPND strains (123 and 137) further suggested that virulence genes related to the capsule, flagella and primary metabolism were highly expressed in strain 123. CONCLUSIONS Here for the first time, it is demonstrated that the virulence of VpAHPND is not only determined by the expression of pirABVP , but also is mediated by ISVal1 which affects the genes involved in flagellar motility and primary metabolism. SIGNIFICANCE AND IMPACT OF THE STUDY The genomic and transcriptomic analysis of VpAHPND strains provides valuable information on the virulence factors affecting the pathogenicity of VpAHPND.
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Affiliation(s)
- Q Yang
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Key Laboratory of Maricultural Organism Disease Control, Ministry of Agriculture and Rural Affairs, Qingdao Key Laboratory of Mariculture Epidemiology and Biosecurity, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China.,Center for Microbial Ecology and Technology (CMET), Ghent University, Gent, Belgium
| | - S Fu
- College of Marine Science and Environment, Dalian Ocean University, Dalian, China.,Key Laboratory of Environment Controlled Aquaculture (KLECA), Ministry of Education, Dalian, China
| | - P Zou
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Key Laboratory of Maricultural Organism Disease Control, Ministry of Agriculture and Rural Affairs, Qingdao Key Laboratory of Mariculture Epidemiology and Biosecurity, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - J Hao
- College of Marine Science and Environment, Dalian Ocean University, Dalian, China.,Key Laboratory of Environment Controlled Aquaculture (KLECA), Ministry of Education, Dalian, China
| | - D Wei
- Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - G Xie
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Key Laboratory of Maricultural Organism Disease Control, Ministry of Agriculture and Rural Affairs, Qingdao Key Laboratory of Mariculture Epidemiology and Biosecurity, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
| | - J Huang
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Key Laboratory of Maricultural Organism Disease Control, Ministry of Agriculture and Rural Affairs, Qingdao Key Laboratory of Mariculture Epidemiology and Biosecurity, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
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Wang D, Li J, Zhu G, Zhao K, Jiang W, Li H, Wang W, Kumar V, Dong S, Zhu W, Tian X. Mechanism of the Potential Therapeutic Candidate Bacillus subtilis BSXE-1601 Against Shrimp Pathogenic Vibrios and Multifunctional Metabolites Biosynthetic Capability of the Strain as Predicted by Genome Analysis. Front Microbiol 2020; 11:581802. [PMID: 33193216 PMCID: PMC7649127 DOI: 10.3389/fmicb.2020.581802] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 09/30/2020] [Indexed: 12/02/2022] Open
Abstract
The global shrimp industry has suffered bacterial diseases caused mainly by Vibrio species. The typical vibriosis, acute hepatopancreatic necrosis disease (AHPND), has resulted in mass mortality and devastating economic losses. Thus, therapeutic strategies are highly needed to decrease the risk of vibriosis outbreaks. Herein, we initially identified that the growth of the causative agent of AHPND, Vibrio parahaemolyticus (VP AHPND ) and other vibrios in Pacific white shrimp (Litopenaeus vannamei) was inhibited by a Bacillus subtilis strain BSXE-1601. The natural products amicoumacins A, B, and C were purified from the cell-free supernatant from the strain BSXE-1601, but only amicoumacin A was demonstrated to be responsible for this anti-Vibrio activity. Our discovery provided the first evidence that amicoumacin A was highly active against shrimp pathogens, including the representative strain VP AHPND . Furthermore, we elucidated the amicoumacin A biosynthetic gene cluster by whole genome sequencing of the B. subtilis strain BSXE-1601. In addition to amicoumacin A, the strain BSXE-1601 genome harbored other genes encoding bacillibactin, fengycin, surfactin, bacilysin, and subtilosin A, all of which have previously reported antagonistic activities against pathogenic strains. The whole-genome analysis provided unequivocal evidence in support of the huge potential of the strain BSXE-1601 to produce diverse biologically antagonistic natural products, which may facilitate further studies on the effective therapeutics for detrimental diseases in shrimp.
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Affiliation(s)
- Dongdong Wang
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
- Lab of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Jiahui Li
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Guoliang Zhu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Kun Zhao
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Wenwen Jiang
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Haidong Li
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Wenjun Wang
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Vikash Kumar
- Lab of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Shuanglin Dong
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
| | - Weiming Zhu
- Key Laboratory of Marine Drugs, Ministry of Education of China, School of Medicine and Pharmacy, Ocean University of China, Qingdao, China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xiangli Tian
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, China
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Zou P, Yang Q, Wang H, Xie G, Cao Z, Chen X, Gao W, Huang J. In vitro disinfection efficacy and clinical protective effects of common disinfectants against acute hepatopancreatic necrosis disease ( AHPND)-causing Vibrio isolates in Pacific white shrimp Penaeus vannamei. J Microbiol 2020; 58:675-86. [PMID: 32720097 DOI: 10.1007/s12275-020-9537-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 06/04/2020] [Accepted: 06/16/2020] [Indexed: 10/23/2022]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is one of the most significant bacterial diseases in global shrimp culture, causing severe economic losses. In the present study, we carried out in vitro antimicrobial tests to investigate the disinfection efficacy of 14 common disinfectants toward different AHPND-causing Vibrio spp., including eight isolates of V. parahaemolyticus, four isolates of V. campbellii, and one isolate of V. owensii. Polyhexamethylene biguanidine hydrochloride (PHMB) was revealed to possess the strongest inhibitory activity. Through analyzing and evaluating the results of antimicrobial tests and acute toxicity test, we selected PHMB and hydrogen peroxide (H2O2) for further clinical protection test. Clinical manifestations indicated that both PHMB (2 mg/L and 4 mg/L) and H2O2 (12 mg/L) could effectively protect juvenile Penaeus vannamei from the infection of V. parahaemolyticus isolate Vp362 at 106 CFU/ml, and the survival rate was over 80%. When the bacterial concentration was reduced to 105 CFU/ml, 104 CFU/ml, and 103 CFU/ml, the survival rate after treated by 1 mg/L PHMB was 64.44%, 93.33%, and 100%, respectively. According to the results, PHMB and H2O2 showed a lower toxicity while a better protection activity, particularly against a lower concentration of the pathogens. Therefore, these two disinfectants are proved to be promising disinfectants that can be applied to prevent and control AHPND in shrimp culture. Moreover, the methods of this study also provided valuable information for the prevention of other important bacterial diseases and suggested a reliable means for screening potential drugs in aquaculture.
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Mai HN, Cruz-Flores R, Dhar AK. Development of an indirect Enzyme Linked Immunoassay (iELISA) using monoclonal antibodies against Photorhabdus insect related toxins, PirA Vp and PirB Vp released from Vibrio spp. J Microbiol Methods 2020; 176:106002. [PMID: 32653400 DOI: 10.1016/j.mimet.2020.106002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/07/2020] [Accepted: 07/07/2020] [Indexed: 11/17/2022]
Abstract
An acute hepatopancreatic necrosis disease (AHPND) causes serious losses to the global shrimp industry. The etiologic agent of AHPND is Vibrio spp. carrying a large plasmid which encodes a binary toxin, PirAB. Currently, AHPND is diagnosed by PCR based methods that detect the presences of both pirA and pirB genes. However, the bacterial strains containing the pirA and pirB genes do not always express the binary toxin, resulting in mis-estimation of the virulence of bacterial strains containing pirA and pirB genes. Thus, the immuno based assay (i.e. ELISA) is a promising approach to detect PirAVp and PirBVp. In the present study, a total of forty monoclonal antibodies clones (mAb) against PirAVp (20 mAbs) and PirBVp (20 mAbs) were screened by western blot analysis to select four mAb clones that show the strongest immunoreactivity in indirect ELISA (iELISA). The four selected mAbs (i.e. 1B9 and 5E9 against PirAVp; 7B7 and 7B9 against PirBVp) detected specifically Vibrio spp. causing AHPND. In addition, four selected mAbs were able to detect either PirAVp or PirBVp down to 0.008 ng/μl. A double blind assay using thirty AHPND-infected and six SPF shrimp Penaeus vannamei were analyzed by iELISA to determine the detection sensitivity of the assay. The results showed that iELISA was able to accurately detect 29 out of 30 AHPND infected shrimp. These finding indicated that iELISA is a reliable method to detect PirAVp and PirBVp toxins in infected shrimp and will be a useful tool in AHPND diagnosis and in studying the role of binary toxins in AHPND pathogenesis.
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Affiliation(s)
- Hung Nam Mai
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, 1117 E Lowell St, Tucson, AZ 85721, USA
| | - Roberto Cruz-Flores
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, 1117 E Lowell St, Tucson, AZ 85721, USA
| | - Arun K Dhar
- Aquaculture Pathology Laboratory, School of Animal & Comparative Biomedical Sciences, The University of Arizona, 1117 E Lowell St, Tucson, AZ 85721, USA.
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De Guia ACM, Samson JS, Uy MRD. In silico analysis of PirA- and PirB-like toxin genes of Vibrio spp., present in Asia and Costa Rica. J Adv Vet Anim Res 2020; 7:320-323. [PMID: 32607364 PMCID: PMC7320819 DOI: 10.5455/javar.2020.g424] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2020] [Revised: 04/02/2020] [Accepted: 04/08/2020] [Indexed: 11/22/2022] Open
Abstract
Objective: Acute hepatopancreatic necrosis disease is an emerging infectious disease of Penaeus species. The causative agent is Vibrio species, which dispels binary toxin similar to pirA and pirB, which causes mortality in infected shrimp. The aim of this research was to investigate the evolutionary relationship of pirA and pirB homologous genes present in this Asia and Costa Rica in silico. Materials and methods: The sequences for in silico analysis were all retrieved from the Basic Local Alignment Search Tool Nucleotide (BLASTN) tool of the National Center for Biotechnology Center. For pirA, a total of 25 sequences submitted from different Asian countries and Costa Rica were retrieved for analysis. Meanwhile, for pirB, a total of 11 sequences submitted from five Asian countries were retrieved. Sequences were aligned using the CLUSTAL W alignment tool under Molecular Evolutionary Genetics Analysis (MEGA) 7 software. The evolutionary history was then estimated using the Unweighted Pair Group Method with Arithmetic mean (UPGMA) method, whereas the evolutionary distances were determined using the maximum composite likelihood model with 1,000 bootstrap replications. Results and Discussion: The results show that, among 27 DNA sequences analyzed for pirA gene, three groups were generated, while for pirB, 13 DNA sequences yielded only one group. The analysis revealed low genetic variation among isolates for both pirA and pirB genes. Conclusion: This result suggests that the low frequency of polymorphism and geographic location cannot be attributed to the differences in V. parahaemolyticus isolates in Asian countries relative to Costa Rican isolates in pirA and pirB genes.
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Affiliation(s)
- Arren Christian M De Guia
- College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines
| | - Jaypee S Samson
- College of Fisheries, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines.,Freshwater Aquaculture Center, Central Luzon State University, Science City of Muñoz, Nueva Ecija, Philippines
| | - Mary Rose D Uy
- Livestock Biotechnology Center, Philippine Carabao Center, Science City of Muñoz, Nueva Ecija, Philippines
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Kumar V, Wille M, Lourenço TM, Bossier P. Biofloc-Based Enhanced Survival of Litopenaeus vannamei Upon AHPND-Causing Vibrio parahaemolyticus Challenge Is Partially Mediated by Reduced Expression of Its Virulence Genes. Front Microbiol 2020; 11:1270. [PMID: 32670225 PMCID: PMC7326785 DOI: 10.3389/fmicb.2020.01270] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 05/19/2020] [Indexed: 12/23/2022] Open
Abstract
The biofloc system is a relatively new aquaculture technology that offers practical solution to maintain culture water quality by recycling nutrients and improves the health status and resistance of shrimps against microbial infection, yet the mode of action involved remains unclear. This study aimed to unravel the underlying mechanism behind the protective effect of a biofloc system using Litopenaeus vannamei and acute hepatopancreatic necrosis disease (AHPND)-causing Vibrio parahaemolyticus M0904 strain as a host-pathogen model. The results showed that a biofloc system maintained at a C/N ratio of 15, improves the water quality and contributes to the nutrition of cultured animals as bioflocs might serve as an additional protein source. Furthermore, the study demonstrated that the biofloc system enhances the survival of L. vannamei upon challenge with a V. parahaemolyticus AHPND strain. Remarkably, the results highlight that in the biofloc system, AHPND-causing V. parahaemolyticus possibly switch from free-living virulent planktonic phenotype to a non-virulent biofilm phenotype, as demonstrated by a decreased transcription of flagella-related motility genes (flaA, CheR, and fliS), Pir toxin (PirBVP), and AHPND plasmid genes (ORF14) and increased expression of the phenotype switching marker AlkPhoX gene in both in vitro and in vivo conditions. Taken together, results suggest that biofloc steer phenotype switching, contributing to the decreased virulence of V. parahaemolyticus AHPND strain toward shrimp postlarvae. This information reinforces our understanding about AHPND in a biofloc setting and opens the possibility to combat AHPND not only by trying to eliminate the AHPND-causing V. parahaemolyticus from the system but rather to steer the phenotypic switch.
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Affiliation(s)
- Vikash Kumar
- Lab of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.,ICAR-Central Inland Fisheries Research Institute (CIFRI), Barrackpore, India
| | - Mathieu Wille
- Lab of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Tânia Margarida Lourenço
- Lab of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Peter Bossier
- Lab of Aquaculture & Artemia Reference Center, Department of Animal Sciences and Aquatic Ecology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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41
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Aranguren Caro LF, Mai HN, Noble B, Dhar AK. Acute hepatopancreatic necrosis disease (VP AHPND), a chronic disease in shrimp (Penaeus vannamei) population raised in latin America. J Invertebr Pathol 2020; 174:107424. [PMID: 32535000 DOI: 10.1016/j.jip.2020.107424] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 11/22/2022]
Abstract
In Latin American shrimp farming, acute hepatopancreatic necrosis disease (AHPND) does not cause the acute mortalities observed in SE Asia. Herein we report for the first time a new phase of infection of AHPND, a chronic phase based on two experimental AHPND-challenge trials using shrimp lines from Latin America. Three shrimp lines of Penaeus vannamei were challenged with a highly pathogenic strain of Vibrio parahaemolyticus causing AHPND (VPAHPND). PCR and histopathology assays were used for confirmation of AHPND in the trials. The first study was to compare survival between the lines. A follow-up trial was conducted to document hepatopancreas heterotrophic bacterial count and to measure the expression of VPAHPND binary toxin genes (pirAB genes) at 24 h.p.i. One of the Latin American shrimp lines, APE1, had significantly higher survival than recorded for the other two lines (APE2 & APE3) and the specific-pathogen-free positive control line. Histopathology showed typical AHPND acute and terminal phase lesions in VPAHPND challenged groups, although destructive cellular changes were more pronounced in the SPF line. Histopathology of animals surviving AHPND revealed a unique chronic phase of infection that resembles septic hepatopancreatic necrosis (SHPN), recognized as diagnostic of digestive tract vibriosis. Data to support our finding, including a quantitative RT-PCR assay, confirmed the expression of pirAB genes and the differential hepatopancreas heterotrophic plate count (HPC) among the different lines challenged. The results explain in part why the shrimp industry in some Latin American countries continues to grow despite the presence of AHPND. In addition, the biology and pathology of AHPND resistant/tolerant shrimp appear to be quite unique in this Latin American shrimp population.
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Apitanyasai K, Chang CC, Ng TH, Ng YS, Liou JH, Lo CF, Lin SS, Wang HC. Penaeus vannamei serine proteinase inhibitor 7 (LvSerpin7) acts as an immune brake by regulating the proPO system in AHPND-affected shrimp. Dev Comp Immunol 2020; 106:103600. [PMID: 31927270 DOI: 10.1016/j.dci.2019.103600] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 10/17/2019] [Revised: 12/24/2019] [Accepted: 12/25/2019] [Indexed: 06/10/2023]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is a recently emerged disease in aqua cultured shrimp that is caused by virulent strains of Vibrio parahaemolyticus (VP). Our previous study used transcriptomics to identify key pathogenic factors in the stomach of AHPND-infected shrimp (Litopenaeus vannamei), and here we used a different subset of the same data to construct a gene-to-gene expression correlation network to identify immune-responsive genes. LvSerpin7 was found to have the highest number of correlations after infection, and it also showed a significant increase in mRNA expression. LvSerpin7 is expressed in all tissues but its expression levels are highest in hemocytes. After successfully silencing LvSerpin7 transcript prior to AHPND challenge, mortality was significantly increased relative to the controls and reached 100% within 36 h post infection. Compared to the controls, the phenoloxidase (PO) activity also increased in both hemolymph and stomach. Recombinant LvSerpin7 inhibited shrimp PO activity in vitro, and we also found that rLvSerpin7 inhibited the growth of AHPND-causing bacteria. These results suggest that LvSerpin7 might reduce the toxic effects that result from unregulated activation of the PO defense system by AHPND-causing bacteria.
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Affiliation(s)
- Kantamas Apitanyasai
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan; International Center for the Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
| | - Che-Chih Chang
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Tze Hann Ng
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan; International Center for the Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
| | - Yen Siong Ng
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Jiun-Hung Liou
- Department of Aquaculture, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Chu-Fang Lo
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan; International Center for the Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Shun Lin
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Han-Ching Wang
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan; International Center for the Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan.
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Yu LH, Teh CSJ, Yap KP, Ung EH, Thong KL. Comparative genomic provides insight into the virulence and genetic diversity of Vibrio parahaemolyticus associated with shrimp acute hepatopancreatic necrosis disease. Infect Genet Evol 2020; 83:104347. [PMID: 32360538 DOI: 10.1016/j.meegid.2020.104347] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 02/15/2020] [Accepted: 04/27/2020] [Indexed: 01/01/2023]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) is an important shrimp disease of economic importance which causes mass mortality of cultivated penaeid shrimps in Southeast Asian countries, Mexico and South America. This disease was originally caused by Vibrio parahaemolyticus (VPAHPND) which is reported to harbour a transferable plasmid carrying the virulent PirAB-like toxin genes (pirABvp). However, little is known about the pathogenicity of VPAHPND. To extend our understanding, comparative genomic analyses was performed in this study to identify the genetic differences and to understand the phylogenetic relationship of VPAHPND strains. Seven Vibrio parahaemolyticus strains (five VPAHPND strains and two non-VPAHPND strains) were sequenced and 31 draft genomes of V. parahaemolyticus were retrieved from NCBI database and incorporated into the genomic comparison to elucidate their genomic diversity. The study showed that the genome sizes of the VPAHPND strains were approximately 5 Mbp. Ten sequence types (STs) were identified among the VPAHPND strains using in silico-Multilocus Sequence Typing analysis (MLST) and ST 970 was the predominant ST. Phylogenetic analysis based on MLST and single nucleotide polymorphisms (SNP) showed that the VPAHPND strains were genetically diverse. Based on the comparative genomic analysis, several functional proteins were identified from diiferent categories associated with virulence-related proteins, secretory proteins, conserved domain proteins, transporter proteins, and phage proteins. The CRISPR analysis showed that VPAHPND strains contained less number of CRISPRs elements than non-VPAHPND strains while six prophages regions were identified in the genomes, suggested the lack of CRISPR might promote prophage insertion. The genomic information in this study provide improved understanding of the virulence of these VPAHPND strains.
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Victorio-De Los Santos M, Vibanco-Pérez N, Soto-Rodriguez S, Pereyra A, Zenteno E, Cano-Sánchez P. The B Subunit of PirAB vp Toxin Secreted from Vibrio parahaemolyticus Causing AHPND Is an Amino Sugar Specific Lectin. Pathogens 2020; 9:E182. [PMID: 32138213 PMCID: PMC7157558 DOI: 10.3390/pathogens9030182] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 02/17/2020] [Accepted: 02/29/2020] [Indexed: 11/26/2022] Open
Abstract
Vibrio parahaemolyticus (Vp) is the etiological agent of the acute hepatopancreatic necrosis disease (AHPND) in Penaeus vannamei shrimp. Vp possesses a 63-70 kb conjugative plasmid that encodes the binary toxin PirAvp/PirBvp. The 250 kDa PirABvp complex was purified by affinity chromatography with galactose-sepharose 4B and on a stroma from glutaraldehyde-fixed rat erythrocytes column, as a heterotetramer of PirAvp and PirBvp subunits. In addition, recombinant pirB (rPirBvp) and pirA (rPirAvp) were obtained. The homogeneity of the purified protein was determined by SDS-PAGE analysis, and the yield of protein was 488 ng/100 μg of total protein of extracellular products. The PirABvp complex and the rPirBvp showed hemagglutinating activity toward rat erythrocytes. The rPirAvp showed no hemagglutinating capacity toward the animal red cells tested. Among different mono and disaccharides tested, only GalNH2 and GlcNH2 were able to inhibit hemagglutination of the PirABvp complex and the rPirBvp. Glycoproteins showed inhibitory specificity, and fetuin was the glycoprotein that showed the highest inhibition. Other glycoproteins, such as mucin, and glycosaminoglycans, such as heparin, also inhibited the activity. Desialylation of erythrocytes enhanced the hemagglutinating activity. This confirms that Gal or Gal (β1,4) GlcNAc are the main ligands for PirABvp. The agglutinating activity of the PirABvp complex and the rPirBvp is not dependent on cations, because addition of Mg2+ or Ca2+ showed no effect on the protein capacity. Our results strongly suggest that the PirBvp subunit is a lectin, which is part of the PirA/PirBvp complex, and it seems to participate in bacterial pathogenicity.
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Affiliation(s)
- Marcelo Victorio-De Los Santos
- Laboratorio de Bacteriología. Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad de Acuacultura y Manejo Ambiental, Av. Sábalo-Cerritos S/N A.P. 711, Mazatlán, Sinaloa 82112, Mexico
- Laboratorio de Investigación en Biología Molecular e Inmunología, Unidad Académica de Ciencias Químico Biológicas y Farmacéuticas, Universidad Autónoma de Nayarit, Ciudad de la Cultura, Tepic, Nayarit 63190, Mexico
| | - Norberto Vibanco-Pérez
- Laboratorio de Investigación en Biología Molecular e Inmunología, Unidad Académica de Ciencias Químico Biológicas y Farmacéuticas, Universidad Autónoma de Nayarit, Ciudad de la Cultura, Tepic, Nayarit 63190, Mexico
| | - Sonia Soto-Rodriguez
- Laboratorio de Bacteriología. Centro de Investigación en Alimentación y Desarrollo, A.C. Unidad de Acuacultura y Manejo Ambiental, Av. Sábalo-Cerritos S/N A.P. 711, Mazatlán, Sinaloa 82112, Mexico
| | - Ali Pereyra
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacan, CDMX 04510, Mexico; (A.P.); (E.Z.)
| | - Edgar Zenteno
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacan, CDMX 04510, Mexico; (A.P.); (E.Z.)
| | - Patricia Cano-Sánchez
- Laboratorio de Biología Molecular, Instituto de Química, Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria, Coyoacan, CDMX 04510, Mexico;
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Liang X, Zhou L, Yan S, Wang Y. Complete genome sequence analysis of the Vibrio owensii strain SH-14 isolated from shrimp with acute hepatopancreatic necrosis disease. Arch Microbiol 2020; 202:1097-106. [PMID: 32040595 DOI: 10.1007/s00203-020-01824-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/08/2020] [Accepted: 01/28/2020] [Indexed: 10/25/2022]
Abstract
Vibrios are a group of very important bacterial pathogens in marine aquaculture industry and cause serious aquatic animal diseases, such as shrimp acute hepatopancreatic necrosis disease (AHPND). A new AHPND pathogen, the Vibrio owensii strain SH-14, was isolated from diseased shrimp in Shanghai, China. In this study, to better understand the pathogenesis of AHPND at the genomic level, the genome of the strain SH-14 was completely sequenced and analyzed. The SH-14 consists of two circular chromosomes of 3,689,702 bp and 2,430,445 bp, and of two plasmids named as pVHvo (69,148 bp) and pVHvo-R (78,918 bp), respectively. The pVHvo encodes the bi-toxic genes of pirAB, responsible for shrimp AHPND. The whole genomes contain a total of 5703 predicted open reading frames (ORFs), 129 tRNA genes and 37 rRNA genes. The average nucleotide identities (ANIs) between the SH-14 and the other V. owensii strains are all greater than 95%, confirming a new V. owensii strain of the SH-14. The taxonomic affiliation of the SH-14 is also supported by whole-genome alignment and nucleotide identity dotplot analyses. These results pave the way for further study of spread and epidemic of shrimp AHPND.
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Ahmmed S, Khan MAAK, Eshik MME, Punom NJ, Islam ABMMK, Rahman MS. Genomic and evolutionary features of two AHPND positive Vibrio parahaemolyticus strains isolated from shrimp (Penaeus monodon) of south-west Bangladesh. BMC Microbiol 2019; 19:270. [PMID: 31796006 PMCID: PMC6889531 DOI: 10.1186/s12866-019-1655-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 11/18/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Due to its rapid lethal effect in the early development stage of shrimp, acute hepatopancreatic necrosis disease (AHPND) has been causing great economic losses, since its first outbreak in southeast China in 2009. Vibrio parahaemolyticus, carrying the pirA and pirB toxin genes is known to cause AHPND in shrimp. The overall objective of this study was to sequence the whole genome of AHPND positive V. parahaemolyticus strains isolated from shrimp (Peneaus monodon) of the south-west region of Bangladesh in 2016 and 2017 and characterize the genomic features and emergence pattern of this marine pathogen. RESULTS Two targeted AHPND positive V. parahaemolyticus strains were confirmed using PCR with 16S rRNA, ldh, AP3 and AP4 primers. The assembled genomes of strain MSR16 and MSR17 were comprised of a total of 5,393,740 bp and 5,241,592 bp, respectively. From annotation, several virulence genes involved in chemotaxis and motility, EPS type II secretion system, Type III secretion system-1 (T3SS-1) and its secreted effectors, thermolabile hemolysin were found in both strains. Importantly, the ~ 69 kb plasmid was identified in both MSR16 and MSR17 strains containing the two toxin genes pirA and pirB. Antibiotic resistance genes were predicted against β-lactam, fluoroquinolone, tetracycline and macrolide groups in both MSR16 and MSR17 strains. CONCLUSIONS The findings of this research may facilitate the tracking of pathogenic and/or antibiotic-resistant V. parahaemolyticus isolates between production sites, and the identification of candidate strains for the production of vaccines as an aid to control of this devastating disease. Also, the emergence pattern of this pathogen can be highlighted to determine the characteristic differences of other strains found all over the world.
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Affiliation(s)
- Shawon Ahmmed
- Aquatic Animal Health Group, Department of Fisheries, University of Dhaka, Dhaka, 1000, Bangladesh
| | | | - Md Mostavi Enan Eshik
- Aquatic Animal Health Group, Department of Fisheries, University of Dhaka, Dhaka, 1000, Bangladesh
| | - Nusrat Jahan Punom
- Aquatic Animal Health Group, Department of Fisheries, University of Dhaka, Dhaka, 1000, Bangladesh
| | | | - Mohammad Shamsur Rahman
- Aquatic Animal Health Group, Department of Fisheries, University of Dhaka, Dhaka, 1000, Bangladesh.
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Nguyen Thi Truc L, Trinh Ngoc A, Tran Thi Hong T, Nguyen Thanh T, Huynh Kim H, Pham Kim L, Huynh Truong G, Truong Quoc P, Nguyen Thi Ngoc T. Selection of Lactic Acid Bacteria (LAB) Antagonizing Vibrio Parahaemolyticus: The Pathogen of Acute Hepatopancreatic Necrosis Disease ( AHPND) in Whiteleg Shrimp ( Penaeus Vannamei). Biology (Basel) 2019; 8:E91. [PMID: 31805658 PMCID: PMC6955853 DOI: 10.3390/biology8040091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2019] [Revised: 11/21/2019] [Accepted: 11/29/2019] [Indexed: 11/16/2022]
Abstract
Acute hepatopancreatic necrosis disease (AHPND) has recently emerged as a serious disease of cultured shrimp. A total of 19 lactic acid bacteria (LAB) strains isolated from shrimp samples were characterized based on morphological characteristics, biochemical tests, sequencing analysis, and their ability to antagonize Vibrio parahaemolyticus, which causes AHPND in whiteleg shrimp. Results from the agar well diffusion method indicated that 3 out of 19 isolated LAB strains showed the highest antagonizing ability against AHPND V. parahaemolyticus strain with an inhibition zone diameter ranging from 18 to 20 mm. Experiments where shrimps were given feed supplemented with these LAB strains and challenged with AHPND strain showed high survival rates (approximately 80.0%), which were not significantly different as compared to those recorded in the negative control treatment (86.6%), but significantly different to those recorded in the positive control treatment (40.6%) after 16 days of the experiment. However, the histological images of shrimp hepatopancreas indicated that the infection rate significantly reduced from 60.0% to 11.1% in shrimps fed with LAB-supplemented feeds and challenged with AHPND V. parahaemolyticus strain as compared to those in the positive control treatment. A polymerase chain reaction (PCR) and 16S rRNA gene sequencing confirmed the identification of LAB strain. These results can be applied in further experiments to investigate the ability of L. plantarum in preventing AHPND in intensively cultured whiteleg shrimp.
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Affiliation(s)
- Linh Nguyen Thi Truc
- Tra Vinh University, 126, Nguyen Thien Thanh, Tra Vinh city, Tra Vinh Province 87000, Vietnam; (L.N.T.T.); (A.T.N.); (T.T.T.H.); (H.H.K.); (L.P.K.)
| | - Ai Trinh Ngoc
- Tra Vinh University, 126, Nguyen Thien Thanh, Tra Vinh city, Tra Vinh Province 87000, Vietnam; (L.N.T.T.); (A.T.N.); (T.T.T.H.); (H.H.K.); (L.P.K.)
| | - To Tran Thi Hong
- Tra Vinh University, 126, Nguyen Thien Thanh, Tra Vinh city, Tra Vinh Province 87000, Vietnam; (L.N.T.T.); (A.T.N.); (T.T.T.H.); (H.H.K.); (L.P.K.)
| | - Tuu Nguyen Thanh
- Tra Vinh University, 126, Nguyen Thien Thanh, Tra Vinh city, Tra Vinh Province 87000, Vietnam; (L.N.T.T.); (A.T.N.); (T.T.T.H.); (H.H.K.); (L.P.K.)
| | - Huong Huynh Kim
- Tra Vinh University, 126, Nguyen Thien Thanh, Tra Vinh city, Tra Vinh Province 87000, Vietnam; (L.N.T.T.); (A.T.N.); (T.T.T.H.); (H.H.K.); (L.P.K.)
| | - Long Pham Kim
- Tra Vinh University, 126, Nguyen Thien Thanh, Tra Vinh city, Tra Vinh Province 87000, Vietnam; (L.N.T.T.); (A.T.N.); (T.T.T.H.); (H.H.K.); (L.P.K.)
| | - Giang Huynh Truong
- Department of Aquatic Pathology, College of Aquaculture and Fisheries, Can Tho University, 3/2 street, Ninh Kieu, Can Tho City 94000, Vietnam; (G.H.T.); (P.T.Q.)
| | - Phu Truong Quoc
- Department of Aquatic Pathology, College of Aquaculture and Fisheries, Can Tho University, 3/2 street, Ninh Kieu, Can Tho City 94000, Vietnam; (G.H.T.); (P.T.Q.)
| | - Tinh Nguyen Thi Ngoc
- Research Institute for Aquaculture No. 2, District 1, Ho Chi Minh City 71000, Vietnam;
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Carrillo-Méndez GD, Zermeño-Cervantes LA, Venancio-Landeros AA, Díaz SF, Cardona-Félix CS. Natural genetic transformation of Vibrio parahaemolyticus via pVA1 plasmid acquisition as a potential mechanism causing AHPND. Dis Aquat Organ 2019; 137:33-40. [PMID: 31777397 DOI: 10.3354/dao03420] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Vibrio parahaemolyticus is the causative bacterium of acute hepatopancreatic necrosis disease (AHPND) in white shrimp Litopenaeus vannamei. This bacterium secretes protein toxins whose genes are encoded in an auto-transmissible plasmid called pVA1. The presence of this plasmid in V. parahaemolyticus is determinant for disease development. Its propagation is not only linked to bacterial colonisation capacity but also to horizontal gene transfer mechanisms. Nevertheless, the active uptake of plasmid, which is known as natural genetic transformation (NGT), has not yet been proposed as a possible acquisition mechanism of the pVA1 plasmid among Vibrio species. Previous studies suggest that some Vibrio species have the ability to undergo NGT in the presence of chitin. Therefore, the objective of this study was to evaluate the induction of NGT mediated by chitin in V. parahaemolyticus (ATCC-17802) through its ability to incorporate and express the pVA1 plasmid. The results showed that a reference strain that does not initially contain the plasmid can incorporate the plasmid under the appropriate transformation conditions, and cause mortality in white shrimp similar to that observed for pathogenic strains isolated from infectious outbreaks. Given the management and conditions of a shrimp farm with large amounts of chitinous exoskeletons, it is feasible that NGT could be a possible acquisition mechanism of plasmid pVA1 among Vibrio species, turning a non-causative strain of V. parahaemolyticus into a causative strain. With this study, we have expanded the knowledge of the pathogenesis process mediated by NGT and the understanding of the possible propagation mechanisms of emerging diseases in the aquaculture sector.
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Affiliation(s)
- Gerardo de Carrillo-Méndez
- Departamento Académico de Biología Marina, Universidad Autónoma de Baja California Sur, 23080 La Paz, BCS, Mexico
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Kumar R, Ng TH, Chang CC, Tung TC, Lin SS, Lo CF, Wang HC. Bile acid and bile acid transporters are involved in the pathogenesis of acute hepatopancreatic necrosis disease in white shrimp Litopenaeus vannamei. Cell Microbiol 2019; 22:e13127. [PMID: 31610617 DOI: 10.1111/cmi.13127] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 05/17/2019] [Revised: 09/18/2019] [Accepted: 09/25/2019] [Indexed: 12/23/2022]
Abstract
Acute hepatopancreas necrosis disease is a recently emerged shrimp disease that is caused by virulent strains of Vibrio parahaemolyticus. Although AHPND poses a serious threat to the shrimp industry, particularly in Asia, its underlying pathogenic mechanisms are not well characterized. Since a previous transcriptomic study showed upregulation of the apical sodium bile acid transporter (LvASBT), our objective here was to explore the role of bile acids and bile acid transporters in AHPND infection. We confirmed that mRNA expression of LvASBT was upregulated in the stomach of AHPND-infected shrimps. Bile acid concentrations were also higher in the stomach of AHPND-infected shrimp and correlated with high expression of pVA plasmid and Pir toxins. In vitro assays showed that bile acids enhanced biofilm formation and increased the release of PirABvp toxins in AHPND-causing V. parahaemolyticus, while in vivo inhibition of LvASBT by GSK2330672 reduced the copy numbers of pVA plasmid, Pir toxin and reduced the amounts of bile acids in AHPND-infected shrimp stomach. Transcriptomics data for AHPND-causing V. parahaemolyticus treated with bile acids showed upregulation of various genes involved in membrane transport, RND efflux pumps and a bacterial secretion system. Taken together, our results show that AHPND-causing V. parahaemolyticus virulence is positively regulated by bile acids and that LvASBT and bile acids in shrimp stomach have important roles in AHPND pathogenesis.
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Affiliation(s)
- Ramya Kumar
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Tze Hann Ng
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Che-Chih Chang
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Teng-Chun Tung
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan
| | - Shih-Shun Lin
- Institute of Biotechnology, National Taiwan University, Taipei, Taiwan
| | - Chu-Fang Lo
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan.,International Center for Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
| | - Han-Ching Wang
- Department of Biotechnology and Bioindustry Sciences, National Cheng Kung University, Tainan, Taiwan.,International Center for Scientific Development of Shrimp Aquaculture, National Cheng Kung University, Tainan, Taiwan
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Saleetid N, Green DM. Network structure and risk-based surveillance algorithms for live shrimp movements in Thailand. Transbound Emerg Dis 2019; 66:2450-2461. [PMID: 31389195 DOI: 10.1111/tbed.13303] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 06/19/2019] [Accepted: 06/27/2019] [Indexed: 11/29/2022]
Abstract
Live shrimp movements pose a potential route for site-to-site transmission of acute hepatopancreatic necrosis disease (AHPND) and other shrimp diseases. We present the first application of network theory to study shrimp epizootiology, providing quantitative information about the live shrimp movement network of Thailand (LSMN), and supporting practical and policy implementations of disease surveillance and control measures. We examined the LSMN over a 13-month period from March 2013 to March 2014, with data obtained from the Thailand Department of Fisheries. The LSMN had a mixture of characteristics both limiting and facilitating disease spread. Importantly, the LSMN exhibited power-law distributions of in and out degrees with exponents of 2.87 and 2.17, respectively. This characteristic indicates that the LSMN behaves like a scale-free network and suggests that an effective strategy to control disease spread in the Thai shrimp farming sector can be achieved by removing a small number of targeted inter-site connections (arcs between nodes). Specifically, a disease-control algorithm based on betweenness centrality (defined as the number of shortest paths between node pairs that traverse a given arc) is proposed here to prioritize targets for disease surveillance and control measures.
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Affiliation(s)
- Nattakan Saleetid
- Department of Fisheries, Kasetsart University Campus, Bangkok, Thailand
| | - Darren Michael Green
- Institute of Aquaculture, Faculty of Natural Sciences, University of Stirling, Stirling, UK
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