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Kim TH, Don Hwang S, Kim SJ, Kim MS, Choi HS, Han HJ. Efficacy of a recombinant M-like protein, SimA as a subunit vaccine candidate against Streptococcus parauberis infection in olive flounder, Paralichthys olivaceus. Fish Shellfish Immunol 2022; 131:1092-1100. [PMID: 36257554 DOI: 10.1016/j.fsi.2022.10.009] [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: 06/01/2022] [Revised: 09/12/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
Streptococcus parauberis, a gram-positive cocci, causes bacterial disease in farmed fish. The recent increase in S. parauberis infection in aquatic farms in South Korea has justified the importance of vaccine development for the prevention of this disease. In this study, we evaluated the effect of subunit vaccines prepared from recombinant M-like protein (SimA) and fibrinogen-binding protein (FBP) candidates with an aluminum hydroxide adjuvant against S. parauberis infection in olive flounder Paralichthys olivaceus. For the in vivo experiment, fish (average length, 7.18 cm; average weight, 3.5 g) were injected intraperitoneally with: phosphate buffer saline (PBS, group 1), PBS/aluminum hydroxide (group 2), FBP/aluminum hydroxide (group 3), SimA/aluminum hydroxide (group 4), and SimA/FBP/aluminum hydroxide (group 5). After 3 weeks, the fish in each group were boosted using PBS (group 1 and 2), FBP (group 3), SimA (group 4), and SimA/FBP (group 5) without adjuvant. We found that the relative percent survival of fish after S. parauberis exposure in group 2, 3, 4, and 5 was 6.25%, 18.75%, 50%, and 12.5%, respectively, whereas the mortality in groups 1 was 80%, respectively. We performed Western blot, ELISA, and quantitative real time RT-PCR (qRT-PCR) after vaccination to investigate the further efficacy of the vaccine. Western blot and ELISA of vaccinated fish serum confirmed the production of specific antibodies against SimA and FBP. Furthermore, results of qRT-PCR showed that recombinant protein SimA induced a remarkably specific-antibody response compared with that in FBP or control and increased the expression of various immune response-related genes including interleukin-8 (IL-8), toll-like receptor 2 (TLR2), tumor necrosis factor-α (TNF-α), CD4-1, and MHC II. Thus, these results indicate that SimA is a potent vaccine candidate for protection against S. parauberis infection.
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Affiliation(s)
- Tae-Ho Kim
- Pathology Division, National Institute of Fisheries Science, Busan, 46083, South Korea
| | - Seong Don Hwang
- Division of Convergence on Marine Science, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan, 49112, Republic of Korea
| | - Soo-Jin Kim
- Pathology Division, National Institute of Fisheries Science, Busan, 46083, South Korea
| | - Myoung-Sug Kim
- Pathology Division, National Institute of Fisheries Science, Busan, 46083, South Korea
| | - Hye-Sung Choi
- Pathology Division, National Institute of Fisheries Science, Busan, 46083, South Korea
| | - Hyun-Ja Han
- Pathology Division, National Institute of Fisheries Science, Busan, 46083, South Korea.
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Kodagoda YK, Liyanage DS, Omeka WKM, Kwon H, Hwang SD, Lee J. Molecular characterization, expression, and functional analysis of cystatin B in the big-belly seahorse (Hippocampus abdominalis). Fish Shellfish Immunol 2022; 124:442-453. [PMID: 35460877 DOI: 10.1016/j.fsi.2022.04.020] [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: 01/07/2022] [Revised: 04/13/2022] [Accepted: 04/17/2022] [Indexed: 06/14/2023]
Abstract
Cystatins are a diverse group of cysteine protease inhibitors widely present among various organisms. Beyond their protease inhibitor function, cystatins play a crucial role in diverse pathophysiological conditions in animals, including neurodegenerative disorders, tumor progression, inflammatory diseases, and immune response. However, the role of cystatins in immunity against viral and bacterial infections in fish remains to be elucidated. In this study, the cystatin B from big-belly seahorse, Hippocampus abdominalis, designated as HaCSTB, was identified and characterized. HaCSTB shared the highest homology with type 1 cystatin family members of teleosts and had three cystatin catalytic domains with no signal peptides or disulfide bonds. HaCSTB transcripts were mainly expressed in peripheral blood cells (PBCs), followed by the testis and pouch of healthy big-belly seahorses. Immune challenge with lipopolysaccharides (LPS), polyinosinic:polycytidylic acid (Poly I:C), and Streptococcus iniae induced upregulation of relative HaCSTB mRNA expression in PBCs. Subcellular localization analysis revealed the distribution of HaCSTB in the cytosol, mitochondria, and nuclei of fathead minnow cells (FHM). Recombinant HaCSTB (rHaCSTB) exhibited potent in vitro inhibitory activity against papain, a cysteine protease, in a concentration-, pH-, and temperature-dependent manner. Overexpression of HaCSTB in viral hemorrhagic septicemia virus (VHSV)-susceptible FHM cells increased cell viability and reduced VHSV-induced apoptosis. Collectively, these results suggest that HaCSTB might engage in the teleostean immune protection against bacteria and viruses.
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Affiliation(s)
- Yasara Kavindi Kodagoda
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju, 63243, South Korea
| | - D S Liyanage
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju, 63243, South Korea
| | - W K M Omeka
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju, 63243, South Korea
| | - Hyukjae Kwon
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju, 63243, South Korea; Marine Science Institute, Jeju National University, Jeju, 63333, South Korea
| | - Seong Don Hwang
- East Sea Fisheries Research Institute, National Institute of Fisheries Science, 1194 Haean-ro, Yeongok-myeon, Gangneung-si, 25435, South Korea; Division of Convergence on Marine Science, Korea Maritime and Ocean University, Busan, 49112, South Korea
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju, 63243, South Korea; Marine Science Institute, Jeju National University, Jeju, 63333, South Korea.
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Choi KM, Cho DH, Joo MS, Choi HS, Kim MS, Han HJ, Cho MY, Hwang SD, Kim DH, Park CI. Functional characterization and gene expression profile of perforin-2 in starry flounder (Platichthys stellatus). Fish Shellfish Immunol 2020; 107:511-518. [PMID: 33217563 DOI: 10.1016/j.fsi.2020.11.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 09/01/2020] [Revised: 10/26/2020] [Accepted: 11/09/2020] [Indexed: 06/11/2023]
Abstract
The membrane attack complex/perforin (MACPF) superfamily consists of multifunctional proteins that form pores on the membrane surface of microorganisms to induce their death and have various immune-related functions. PFN2 is a perforin-like protein with an MACPF domain, and humans with deficient PFN2 levels have increased susceptibility to bacterial infection, which can lead to fatal consequences for some patients. Therefore, in this study, we confirmed the antimicrobial function of PFN2 in starry flounder (Platichthys stellatus). The molecular properties were confirmed based on the verified amino acid sequence of PsPFN2. In addition, the expression characteristics of tissue-specific and pathogen-specific PsPFN2 mRNA were also confirmed. The recombinant protein was produced using Escherichia coli, and the antimicrobial activity was then confirmed. The coding sequence of PFN2 (PsPFN2) in P. stellatus consists of 710 residues. The MACPF domain was conserved throughout evolution, as shown by multiple sequence alignment and phylogenetic analysis. PsPFN2 mRNA is abundantly distributed in immune-related organs such as the spleen and gills of healthy starry flounder, and significant expression changes were confirmed after artificial infection by bacteria or viruses. We cloned the MACPF domain region of PFN2 to produce a recombinant protein (rPFN2) and confirmed its antibacterial effect against a wide range of bacterial species and the parasite (Miamiensis avidus).
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Affiliation(s)
- Kwang-Min Choi
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Dong-Hee Cho
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Min-Soo Joo
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Hye-Sung Choi
- Pathology Research Division, National Institute of Fisheries Science, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan, 46083, Republic of Korea
| | - Myoung Sug Kim
- Pathology Research Division, National Institute of Fisheries Science, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan, 46083, Republic of Korea
| | - Hyun-Ja Han
- Pathology Research Division, National Institute of Fisheries Science, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan, 46083, Republic of Korea
| | - Mi Young Cho
- Pathology Research Division, National Institute of Fisheries Science, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan, 46083, Republic of Korea
| | - Seong Don Hwang
- Pathology Research Division, National Institute of Fisheries Science, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan, 46083, Republic of Korea
| | - Do-Hyung Kim
- Department of Aquatic Life Medicine, College of Fisheries Science, Pukyong National University, 45, Yongso-ro, Nam-Gu., Busan, Republic of Korea.
| | - Chan-Il Park
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea.
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Choi KM, Hwang SD, Joo MS, Hwang JY, Kwon MG, Jeong JM, Seo JS, Lee JH, Lee HC, Park CI. Two short antimicrobial peptides derived from prosaposin-like proteins in the starry flounder (Platichthys stellatus). Fish Shellfish Immunol 2020; 105:95-103. [PMID: 32619625 DOI: 10.1016/j.fsi.2020.05.075] [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: 03/25/2020] [Revised: 05/12/2020] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
Prosaposin (PSAP) is a precursor of saposin (SAP), which is present in lysosomal and secreted proteins. PSAP is a member of the SAP-like protein families, which comprise multifunctional proteins. In particular, their antimicrobial activity has been reported. We identified PSAP-like (PsPSAPL) sequences from starry flounder and analysed their expression and antimicrobial activity based on cDNA and amino acid sequences. PsPSAPL showed conservation of three saposin B type domains at high levels, and PsPSAPL mRNA was relatively abundantly distributed in the brain and gills of healthy starry founders. PsPSAPL mRNA showed significant expression changes in response to viral haemorrhagic septicaemia virus and Streptococcus parauberis. Synthetic peptides (PsPSAPL-1 and -2), prepared based on amino acid sequences, were used to confirm as well as analyse the antimicrobial activity against bacteria and parasites. Consequently, PsPSAPL-1 and -2 were found to significantly inhibit the growth of various bacteria and kill the Miamiensis avidus. In addition, bacterial biofilm formation was significantly inhibited. Safety was also confirmed by analysing cell haemolysis. These results indicate the immunological function of PsPSAP and the potential antimicrobial activity of the AMPs PsPSAPL-1 and -2.
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Affiliation(s)
- Kwang-Min Choi
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Seong Don Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Min-Soo Joo
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Ji-Min Jeong
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Ji Hoon Lee
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Hee-Chung Lee
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Chan-Il Park
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea.
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Hwang JY, Kwon MG, Seo JS, Hwang SD, Jeong JM, Lee JH, Jeong AR, Jee BY. Current use and management of commercial fish vaccines in Korea. Fish Shellfish Immunol 2020; 102:20-27. [PMID: 32272258 DOI: 10.1016/j.fsi.2020.04.004] [Citation(s) in RCA: 8] [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: 04/19/2019] [Revised: 03/30/2020] [Accepted: 04/02/2020] [Indexed: 06/11/2023]
Abstract
The aquaculture industry in Korea has grown rapidly since the 1960s, and it is a major food source. However, the expansion of aquaculture systems has increased the chances of infectious disease outbreaks, and vaccination plays an important role in commercial fish farming. This is the first comprehensive review of commercial fish vaccines in Korea. It not only provides an overview of commercially available fish vaccines and their associated approval processes and laws, but also some perspectives on research advances regarding fish vaccines in Korea. In Korea, fish vaccines are approved only after their safety and effectiveness have been verified according to the Pharmaceutical Affairs Act, and after approval, each vaccine lot must pass the national evaluation criteria. As of the end of 2019, 29 vaccines were approved for 10 fish pathogens, including both single and combination vaccines containing more than two inactivated pathogens. The approved fish vaccines consist of 2 immersion vaccines, as well as 1 intramuscular and 26 intraperitoneal vaccines, which require syringe injection. All the 29 vaccines are manufactured as formalin-inactivated vaccines; 1 is an adjuvant vaccine and 28 are non-adjuvant vaccines; 25 are bacterial vaccines, 2 are viral vaccines, 1 is a parasite vaccine, and 1 is a parasite and bacterial vaccine. In terms of the target fish species, 27 vaccines are used in the olive flounder (Paralichthys olivaceus), 1 in the starry flounder (Platichthys stellatus), and 1 in the red seabream (Pagrus major), striped beakfish (Oplegnathus fasciatus), and amberjack (Seriola quinqueradiata). This imbalance exists mostly because the olive flounder is the main farmed fish species in Korea. In 2018, 67.71 million vaccine doses were distributed following satisfactory performance in the national evaluation. They were used to vaccinate approximately 80.6% of farmed olive flounders.
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Affiliation(s)
- Jee Youn Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea.
| | - Mun Gyeong Kwon
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Seong Don Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Ji Min Jeong
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Ji Hoon Lee
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Ah Reum Jeong
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Bo Young Jee
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
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Hwang SD, Hwang JY, Sohn S, Kim SM, Kim SR, Kim KI, Kwon MG, Jung M, Lee KY, Kang BC, Seo JS. Genome data of shrimp acute hepatopancreatic necrosis disease causative Vibrio parahaemolyticus strains isolated from South Korea aquaculture farms. Data Brief 2020; 31:105697. [PMID: 32509934 PMCID: PMC7264491 DOI: 10.1016/j.dib.2020.105697] [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] [Received: 02/03/2020] [Revised: 04/23/2020] [Accepted: 05/04/2020] [Indexed: 11/07/2022] Open
Abstract
The Vibrio parahaemolyticus is a gram-negative bacterium, which is responsible for acute hepatopancreatic necrosis disease (AHPND) in shrimp and has various virulent factors. So, to intensify the knowledge on pathogenic mechanism, the heterogeneous V.parahaemolyticus strains genome are indeed. Here, genome of seven V.parahaemolyticus strains, which are virulent to shrimps were sequenced by PacBio platform and the virulence was confirmed through the presence of plasmid (∼69 Kb) with binary toxin genes (i.e., pirA and pirB) with PCR method.
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Affiliation(s)
- Seong Don Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Saebom Sohn
- Aquaculture Industry Division, East Sea Fisheries Research Institute, Gangneung, Gangwon-do 25435, Republic of Korea
| | - Su Mi Kim
- Aquaculture Industry Division, West Sea Fisheries Research Institute, Inchon 22383, Republic of Korea
| | - Seok Ryel Kim
- Aquaculture Industry Division, West Sea Fisheries Research Institute, Inchon 22383, Republic of Korea
| | - Kwang Il Kim
- Pathology Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Myunghee Jung
- Data Science Center, Insilicogen Inc., Yongin-si 16954, Gyeonggi-do, Republic of Korea.,Department of Forest Science, College of Agriculture and Life Science, Seoul National University, Seoul 151-921, Korea
| | - Kyoo-Yeol Lee
- Data Science Center, Insilicogen Inc., Yongin-si 16954, Gyeonggi-do, Republic of Korea
| | - Byeong-Chul Kang
- Data Science Center, Insilicogen Inc., Yongin-si 16954, Gyeonggi-do, Republic of Korea
| | - Jung Soo Seo
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
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Hwang JY, Ahn SJ, Kwon MG, Seo JS, Hwang SD, Jee BY. Whole-genome next-generation sequencing and phylogenetic characterization of viral haemorrhagic septicaemia virus in Korea. J Fish Dis 2020; 43:599-607. [PMID: 32166786 DOI: 10.1111/jfd.13150] [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: 10/19/2019] [Revised: 02/06/2020] [Accepted: 02/10/2020] [Indexed: 06/10/2023]
Abstract
Whole-genome next-generation sequencing was used to investigate the local evolution of viral haemorrhagic septicaemia virus, a serious pathogen affecting economically important fish such as rainbow trout and turbot in Europe and olive flounder in Asia. Sequence analysis showed that all isolates were genotype IVa, but could be classified further into four subgroups (K1-K4). In addition, genomic regions encompassing the nucleoprotein, phosphoprotein, matrix protein and non-virion protein genes, as well as the seven non-coding regions, were relatively conserved, whereas glycoprotein and RNA-dependent RNA polymerase genes were variable in the coding region. Taken together, the data demonstrate that whole-genome next-generation sequencing may be useful for future surveillance, prevention and control strategies against viral haemorrhagic septicaemia.
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Affiliation(s)
- Jee Youn Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Gijang-gun, Korea
| | - Sang Jung Ahn
- R&D Planning Team, Korea Institute of Marine Science & Technology Promotion, Seoul, Korea
| | - Mun-Gyeong Kwon
- Aquatic Disease Control Division, National Institute of Fisheries Science, Gijang-gun, Korea
| | - Jung Soo Seo
- Aquatic Disease Control Division, National Institute of Fisheries Science, Gijang-gun, Korea
| | - Seong Don Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Gijang-gun, Korea
| | - Bo Young Jee
- Aquatic Disease Control Division, National Institute of Fisheries Science, Gijang-gun, Korea
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Hwang SD, Choi KM, Hwang JY, Kwon MG, Jeong JM, Seo JS, Jee BY, Park CI. Molecular genetic characterisation and expression profiling of calpain 3 transcripts in red sea bream (Pagrus major). Fish Shellfish Immunol 2020; 98:19-24. [PMID: 31899359 DOI: 10.1016/j.fsi.2019.12.090] [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: 10/17/2019] [Revised: 12/25/2019] [Accepted: 12/28/2019] [Indexed: 06/10/2023]
Abstract
Calpains (CAPNs) belong to the papain superfamily of cysteine proteases, and they are calcium-dependent cytoplasmic cysteine proteases that regulate a variety of physiological processes. We obtained the sequence of CAPN3 from an NGS-based analysis of Pagrus major (PmCAPN3) and confirmed the conserved molecular biological properties in the predicted amino acid sequence. The amino acid sequence and predicted domains of CAPN3 were found to be highly conserved in all of the examined species, and one catalytic domain and four calcium binding sites were identified. In healthy P. major, the PmCAPN3 mRNA was most abundantly expressed in the muscle and skin, and ubiquitously expressed in the other tissues used in the experiment. After artificial infections with fish pathogens, significant changes in its expression levels were found in immune-related tissues, most of showed upregulation. In particular, the highest level of expression was found in the liver, a tissue associated with protease activity. Taken together, these results suggest a physiological activity for PmCAPN3 in P. major and reveal functional possibilities that have not yet been reported in the immune system.
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Affiliation(s)
- Seong Don Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Kwang-Min Choi
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Ji-Min Jeong
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Bo-Yeong Jee
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Chan-Il Park
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea.
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Hwang SD, Joo MS, Hwang JY, Kwon MG, Jeong JM, Seo JS, Jee BY, Park CI. Molecular characterization and gene expression data of liver expressed antimicrobial Peptide-2 (LEAP-2) isolated from rock bream ( Oplegnathus fasciatus). Data Brief 2019; 26:104538. [PMID: 31667299 PMCID: PMC6811885 DOI: 10.1016/j.dib.2019.104538] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 05/22/2019] [Revised: 08/21/2019] [Accepted: 09/10/2019] [Indexed: 11/30/2022] Open
Abstract
Antimicrobial peptides (AMPs) are known to play a role as a first line of defence against microbial invasion. Liver Expressed Antimicrobial Peptides-2 (LEAP-2) is one of the AMPs. LEAP-2 includes four highly conserved cysteine residues and belongs to a cysteine-rich peptides group. We identified and characterized the molecular properties of LEAP-2 in rock bream. The expression levels of rock bream LEAP-2 (RbLEAP-2) in the 12 different tissues of healthy fish and the RbLEAP-2 expression pattern after infections with Edwardsiella piscicida (E. piscicida), Streptococcus iniae (S. iniae) and red seabream iridovirus (RSIV) were examined. This data provide that RbLEAP-2 plays an important role in innate immunity when rock bream is infected with a pathogen.
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Affiliation(s)
- Seong Don Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Min Soo Joo
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Ji-Min Jeong
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Bo-Yeong Jee
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Chan-Il Park
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
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10
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Choi KM, Hwang SD, Joo MS, Hwang JY, Kwon MG, Jeong JM, Seo JS, Jee BY, Park CI. The atypical chemokine receptor 4 in red sea bream (Pagrus major): Molecular characterization and gene expression analysis. Fish Shellfish Immunol 2019; 93:50-54. [PMID: 31276790 DOI: 10.1016/j.fsi.2019.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 03/20/2019] [Revised: 05/29/2019] [Accepted: 07/02/2019] [Indexed: 06/09/2023]
Abstract
Atypical chemokine receptor 4 (ACKR4) is regulated by cytokines, binds chemokines and regulates the chemokine gradient. We verified the cDNA sequence by confirming ACKR4 from red sea bream (PmACKR4) by next generation sequencing (NGS) and analysed the molecular characteristics and gene expression profile. In the analysis using the predicted amino acid sequence of PmACKR4, a highly conserved G protein-coupled receptor 1 region and two cysteine residues were identified and included in the ACKR4 teleost cluster in the phylogenetic analysis. In healthy red sea bream, PmACKR4 mRNA was expressed at the highest levels in head kidney and was upregulated in all immune -related tissues used in the experiment after challenges with Streptococcus iniae (S. iniae) and red sea bream iridovirus (RSIV). These results suggest that ACKR4 is highly conserved in red sea bream and may play an important role in the immune system as previously reported. It is thought that ACKR4 acts as a regulator of immune -related cells via immune reactions after pathogenic infection.
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Affiliation(s)
- Kwang-Min Choi
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Seong Don Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Min Soo Joo
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Ji-Min Jeong
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Bo-Yeong Jee
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Chan-Il Park
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea.
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11
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Woo WS, Joo MS, Hwang JY, Kwon MG, Seo JS, Hwang SD, Jee BY, Kim MC, Park CI. Data on CXC chemokine ligand 10(CXCL10) expression and activation in red sea bream during bacterial and viral infection. Data Brief 2019; 25:103943. [PMID: 31338394 PMCID: PMC6626878 DOI: 10.1016/j.dib.2019.103943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 12/23/2018] [Accepted: 04/15/2019] [Indexed: 11/22/2022] Open
Abstract
CXCL10 plays an important role in angiogenesis and inhibits the differentiation of endothelial cells into capillaries. It also plays an important role in the generation and transmission of effector T cell responses and the recruitment of T cells to inflammatory sites. In this article, we constructed cDNAs to identify and analyse the CXCL10 domain, and performed multiple alignments and a phylogenetic analysis to determine homology with other animals. Real-time PCR was performed to confirm construction and expression after bacterial and viral infection.
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Affiliation(s)
- Won-Sik Woo
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Min Soo Joo
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Seong Don Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Bo-Yeong Jee
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Mu-Chan Kim
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Chan-Il Park
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
- Corresponding author.
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12
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Choi KM, Hwang JY, Kwon MG, Jeong JM, Seo JS, Hwang SD, Jee BY, Kim MC, Park CI. Data on molecular characterization and expression profiles of the NF-κB repressing factor gene in red sea bream (Pagrus major). Data Brief 2019; 24:103977. [PMID: 31193988 PMCID: PMC6545398 DOI: 10.1016/j.dib.2019.103977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/18/2019] [Accepted: 04/29/2019] [Indexed: 11/05/2022] Open
Abstract
Nuclear factor-kappaB (NF-κB) repressing factor (NKRF) specifically inhibits the transcriptional activity of NF-κB protein. The PmNKRF cDNA is composed of 757 amino acid residues. Alignment analysis revealed that the G-patch and R3H domains are conserved in different organisms. We aimed to analyse red sea bream NKRF (PmNKRF) gene expression after infection with pathogens [Streptococcus iniae or red sea bream iridovirus (RSIV)] and in healthy individuals. In healthy individuals, PmNKRF was ubiquitously expressed in all 12 tested tissues, predominantly in the head kidney and spleen. Expression of PmNKRF was significantly up-regulated in the gills, kidney, liver and spleen after RSIV infection. After S. iniae infection, PmNKRF expression was significantly down-regulated in the gills and significantly up-regulated in the kidney, liver and spleen.
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13
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Joo MS, Hwang JY, Kwon MG, Seo JS, Hwang SD, Jee BY, Kim MC, Park CI. Efficacy and safety data of ceftiofur antibiotics against Streptococcus parauberis PH0710 infection in starry flounder ( Platichthys stellatus). Data Brief 2019; 23:103729. [PMID: 31372396 PMCID: PMC6660470 DOI: 10.1016/j.dib.2019.103729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 08/27/2018] [Revised: 01/14/2019] [Accepted: 01/29/2019] [Indexed: 11/07/2022] Open
Abstract
This article provides efficacy and safety data of ceftiofur antibiotics against streptococcal infection in starry flounder. Ceftiofur, which is a veterinary antibiotics, is effective against fishery bacteria. Ceftiofur can be prescribed and sold by veterinarians. However, it is illegal in South Korea for fishery disease managers to prescribe and sell ceftiofur. Therefore, in order to utilize available antibiotics and prevent illegal use of veterinary antibiotics, it is necessary to perform research to determine the recommended effective dose and administration methods of antibiotics for fisheries. In this article, the appropriate concentration and injection method of antibiotics to treat starry flounder infected with S. parauberis PH0710 were provided. In addition, histopathological examination results were provided to confirm the effect of antibiotics on the host tissue. Accordingly, these data could be used as basic data for the application of ceftiofur antibiotics in disease management for fisheries.
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Affiliation(s)
- Min Soo Joo
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Seong Don Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Bo-Yeong Jee
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Mu-Chan Kim
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Chan-Il Park
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
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14
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Choi KM, Joo MS, Cho DH, Bae JS, Jung JM, Hwang JY, Kwon MG, Seo JS, Hwang SD, Jee BY, Kim DH, Park CI. Characterization of gene expression profiles and functional analysis of peptidoglycan recognition protein 2 from rock bream (Oplegnathus fasciatus). Fish Shellfish Immunol 2019; 84:1068-1074. [PMID: 30439496 DOI: 10.1016/j.fsi.2018.11.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 09/06/2018] [Revised: 10/18/2018] [Accepted: 11/10/2018] [Indexed: 06/09/2023]
Abstract
Peptidoglycan recognition protein 2 (PGRP2) is a Zn2+-dependent peptidase that plays important roles in binding to microbial components of the cell membrane, inducing phagocytosis and antimicrobial activity. Rock bream (Oplegnathus fasciatus) PGRP2 (RbPGRP2) was identified in the intestine by next generation sequencing (NGS) analysis. The open reading frame (ORF) the RbPGRP2 cDNA (470 amino acid residues) contains a peptidoglycan recognition protein domain (residues 300 to 446). Alignment analysis revealed that RbPGRP2 shares 37.6-53.5% overall sequence identity with the PGRP2s of other species. Phylogenetic analysis revealed that RbPGRP2 clustered together with PGRP2s from teleosts. In healthy rock bream, RbPGRP2 was found to be ubiquitously expressed in all of the examined tissues, especially in the liver. RbPGRP2 expression was significantly upregulated in all of the examined tissues of rock bream after infection with Edwardsiella piscicida, Streptococcus iniae and red sea bream iridovirus (RSIV) compared with the control. Purified rRbPGRP2 interactions with bacteria and inhibited the growth of bacteria in the presence of Zn2+. These results indicate that RbPGRP2 plays an important role in the innate immune response against bacterial infection.
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Affiliation(s)
- Kwang-Min Choi
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Min-Soo Joo
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Dong Hee Cho
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Jin-Sol Bae
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Ji-Min Jung
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Seong Don Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Bo-Yeong Jee
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan, 46083, Republic of Korea
| | - Do-Hyung Kim
- Department of Aquatic Life Medicine, College of Fisheries Science, Pukyong National University, 45, Yongso-ro, Nam-Gu, Busan, Republic of Korea.
| | - Chan-Il Park
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 455, Tongyeong, 650-160, Republic of Korea.
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15
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Godahewa GI, Lee S, Kim J, Perera NCN, Kim MJ, Kwon MG, Jee BY, Hwang SD, Lee J. Analysis of complete genome and pathogenicity studies of the spring viremia of carp virus isolated from common carp (Cyprinus carpio carpio) and largemouth bass (Micropterus salmoides): An indication of SVC disease threat in Korea. Virus Res 2018; 255:105-116. [PMID: 30009849 DOI: 10.1016/j.virusres.2018.06.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 06/28/2018] [Accepted: 06/28/2018] [Indexed: 10/28/2022]
Abstract
A batch of wild common carp and largemouth bass died in Andong, Gyeongsangbuk-do province, South Korea, in 2016. Moribund fish showed typical signs of spring viremia of carp (SVC) disease, which causes acute hemorrhage in the skin and ascites. Thus far, SVC disease has been detected in several regions of the world but never in South Korea. Suspecting the infectious agent to be the SCV virus (SVCV), the moribund fish were sampled and screened. The isolated virus developed a cytopathic effect in EPC cells. Both viral isolates from the common carp (ADC-SVC2016-1) and largemouth bass (ADC-SVC2016-3) were identical in terms of their genome sequence, which were 11,034 bp nucleotides in length. Genome comparison exhibited greater sequence similarity with the Asian SVCV sequences available at NCBI. Phylogenetic analysis revealed that the Korean SVCV isolates were clustered within the Asian clade. More specifically, evolutionary analysis by using the P gene sequences showed that the Korean isolates were sub-cladded within the Iai genogroup but diverged from Chinese strains of SH150514 and SH160901. The Korean isolates shared more than 98% sequence similarity with the two Chinese SVCV isolates, suggesting that the spread of SVCV originated from China. The isolated virus had cytopathic effects on EPC cells. Virus transmission studies showed that the virus exhibited the highest virulence at 15 °C, which was also dependent on the method used, with the injection method being better than the immersion and cohabitation methods. This is the first study to document that Korean SVCV isolates may be epizootic in wild common carp and other susceptible animal populations in South Korea.
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Affiliation(s)
- G I Godahewa
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Seongdo Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Jeongeun Kim
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - N C N Perera
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Myoung-Jin Kim
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Mun Gyeong Kwon
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Bo Young Jee
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Seong Don Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea.
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea.
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16
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Kim KI, Hwang SD, Cho MY, Jung SH, Kim YC, Jeong HD. A natural infection by the red sea bream iridovirus-type Megalocytivirus in the golden mandarin fish Siniperca scherzeri. J Fish Dis 2018; 41:1229-1233. [PMID: 29806082 DOI: 10.1111/jfd.12815] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Revised: 03/20/2018] [Accepted: 03/20/2018] [Indexed: 06/08/2023]
Abstract
An outbreak of a Megalocytivirus infection was found in the golden mandarin fish Siniperca scherzeri during September and October 2016, in Korea. Phylogeny and genetic diversity based on the major capsid protein (MCP) and adenosine triphosphatase (ATPase) genes showed a new strain. Designated as GMIV, this strain derived from the golden mandarin fish was suggested to belong to the red sea bream iridovirus (RSIV)-subgroup I. Additionally, this train clustered with the ehime-1 strain from red sea bream Pagrus major in Japan and was distinguished from circulating isolates (RSIV-type subgroup II and turbot reddish body iridovirus [TRBIV] type) in Korea. The infection level, evaluated by qPCR, ranged from 8.18 × 102 to 7.95 × 106 copies/mg of tissue individually, suggesting that the infected fish were in the disease-transmitting stage. The diseased fish showed degenerative changes associated with cytomegaly in the spleen as general sign of Megalocytivirus infection. The results confirm that the RSIV-type Megalocytivirus might have crossed the environmental and species barriers to cause widespread infection in freshwater fish.
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Affiliation(s)
- K I Kim
- Pathology Division, National Institute of Fisheries Science, Busan, Korea
| | - S D Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan, Korea
| | - M Y Cho
- Pathology Division, National Institute of Fisheries Science, Busan, Korea
| | - S H Jung
- Pathology Division, National Institute of Fisheries Science, Busan, Korea
| | - Y C Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan, Korea
| | - H D Jeong
- Department of Aquatic Life Medicine, Pukyong National University, Busan, Korea
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17
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Hwang SD, Park KM, Lee SW, Han JY, Kim MJ, Song JH. Graft Contrast-Induced Nephropathy Caused by Prerenal Transplant Computed Tomography: A Case Report. Transplant Proc 2018; 50:1196-1198. [PMID: 29731093 DOI: 10.1016/j.transproceed.2018.01.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 12/22/2017] [Accepted: 01/22/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND We report a case of posttransplant contrast-induced nephropathy (CIN) that occurred after performing computed tomography (CT) scanning for pretransplant cardiac and vascular evaluation. CASE PRESENTATION The patient had an 8-year history of hemodialysis and was admitted to the hospital for a kidney transplant from a deceased donor. Cardiac CT imaging and 3-dimensional low-extremity CT angiography were performed to confirm the patient's cardiac and iliac artery function. After successful transplantation surgery, the patient had a urine output of 250 mL and a reduced creatinine level from 8.8 to 2.3 mg/dL on postoperative day 4. However, urine output suddenly decreased to 30 mL and the creatinine level suddenly increased to 7.6 md/dL without any symptoms such as fever or graft tenderness. The patient tested negative for panel-reactive antibodies and donor-specific antibodies, and he was discharged 1 week later with an improvement in symptoms. Results of a graft biopsy indicated CIN, and the contrast-enhanced kidney was observed on noncontrast CT imaging that was performed immediately after transplantation to rule out vascular problems as well as other complications. CONCLUSIONS There may be residual contrast present from pretransplant CT imaging, which could affect the functional kidney grafts after transplantation and can lead to CIN. This scenario could potentially lead to loss of graft function, suggesting that caution should be observed when ordering CT imaging in this patient population.
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Affiliation(s)
- S D Hwang
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Republic of Korea
| | - K-M Park
- Department of General Surgery, Inha University, Incheon, Republic of Korea
| | - S W Lee
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Republic of Korea
| | - J-Y Han
- Department of Pathology, Inha University Hospital, Inha University Medical College, Incheon, Republic of Korea
| | - M-J Kim
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Republic of Korea
| | - J H Song
- Division of Nephrology and Hypertension, Department of Internal Medicine, Inha University College of Medicine, Incheon, Republic of Korea.
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18
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Kim MJ, Jee JH, Hwang SD. SP090ELEVATED BLOOD PRESSURE IS THE MOST COMMON TRIGGER FACTOR OF POSTERIOR REVERSIBLE ENCEPHALOPATHY SYNDROME IN PATIENTS WITH CHRONIC KIDNEY DISEASE. Nephrol Dial Transplant 2018. [DOI: 10.1093/ndt/gfy104.sp090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Moon-Jae Kim
- Div. of Nephrology-Hypertension, Inha University Hospital, Incheon City, Korea, Republic of
| | - J H Jee
- Div. of Nephrology-Hypertension, Inha University Hospital, Incheon City, Korea, Republic of
| | - S D Hwang
- Div. of Nephrology-Hypertension, Inha University Hospital, Incheon City, Korea, Republic of
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19
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Hwang JY, Jeong JM, Kwon MG, Seo JS, Hwang SD, Son MH, Bae JS, Choi KM, Cho DH, Jeswin J, Park CI. Olive flounder CD276 (B7-H3) a coinhibitory molecule for T cells: Responses during viral hemorrhagic septicemia virus (VHSV) stimulation. Fish Shellfish Immunol 2018; 73:228-233. [PMID: 29253650 DOI: 10.1016/j.fsi.2017.12.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2017] [Revised: 11/23/2017] [Accepted: 12/14/2017] [Indexed: 06/07/2023]
Abstract
Coinhibitory pathways in the B7-CD28 family provide critical inhibitory signals that regulate immune homeostasis, defense and protect tissue integrity. CD276 (B7-H3) is an important immune checkpoint member of this family, which is induced on antigen-presenting cells (APCs), and plays an important role in the inhibition of T-cell function. We have characterized the CD276 gene of olive flounder, Paralichthys olivaceus. OfCD276 has an ORF of 912 bp that codes for 303 amino acids with a predicted molecular mass of 33 kDa. It is a type I transmembrane protein with a single extracellular V- and C-like Ig domains, a transmembrane region, and a highly diverse cytoplasmic tail. This gene was distinctly expressed in gill, spleen, and skin, and sparsely expressed in other tissues. Pathogen stimulation by VHSV revealed that transcription of OfCD276 was induced on early hours in liver and expressed late in head kidney, spleen, intestine and gill tissues. Flow cytometry analysis of leukocytes revealed the percentage of granulocytes and lymphocytes that expressed OfCD276 molecules on their cell surface was 85.1% and 3.1%, respectively. Our study shows a significant role played by this coinhibitory molecule that participate in the regulation of the cell mediated immune response.
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Affiliation(s)
- Jee Youn Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Ji-Min Jeong
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Jung Soo Seo
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Seong Don Hwang
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Maeng-Hyun Son
- Aquatic Animal Disease Control Center, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea
| | - Jin-Sol Bae
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Kwang-Min Choi
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Dong-Hee Cho
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Joseph Jeswin
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea.
| | - Chan-Il Park
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea.
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Perera NCN, Godahewa GI, Lee S, Kim MJ, Hwang JY, Kwon MG, Hwang SD, Lee J. Manganese-superoxide dismutase (MnSOD), a role player in seahorse (Hippocampus abdominalis) antioxidant defense system and adaptive immune system. Fish Shellfish Immunol 2017; 68:435-442. [PMID: 28743628 DOI: 10.1016/j.fsi.2017.07.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [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: 05/09/2017] [Revised: 07/17/2017] [Accepted: 07/21/2017] [Indexed: 06/07/2023]
Abstract
Manganese superoxide dismutase (MnSOD) is a metaloenzyme that catalyzes dismutation of the hazardous superoxide radicals into less hazardous H2O2 and H2O. Here, we identified a homolog of MnSOD from big belly seahorse (Hippocampus abdominalis; HaMnSOD) and characterized its structural and functional features. HaMnSOD transcript possessed an open reading frame (ORF) of 672 bp which codes for a peptide of 223 amino acids. Pairwise alignment showed that HaMnSOD shared highest identity with rock bream MnSOD. Results of the phylogenetic analysis of HaMnSOD revealed a close proximity with rock bream MnSOD which was consistent with the result of homology alignment. The intense expression of HaMnSOD was observed in the ovary, followed by the heart and the brain. Further, immune related responses of HaMnSOD towards pathogenic stimulation were observed through bacterial and viral challenges. Highest HaMnSOD expression in response to stimulants Edwardsiella tarda, Streptococcus iniae, lipopolysaccharide (LPS), and polyinosinic-polycytidylic acid (Poly I:C) was observed in the late stage in the blood tissue. Xanthine/xanthine oxidase assay (XOD assay) indicated the ROS-scavenging ability of purified recombinant HaMnSOD (rHaMnSOD). The optimum conditions for the SOD activity of rHaMnSOD were pH 9 and the 25 °C. Collectively, the results obtained through the expressional analysis profiles and the functional assays provide insights into potential immune related and antioxidant roles of HaMnSOD in the big belly seahorse.
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Affiliation(s)
- N C N Perera
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - G I Godahewa
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Seongdo Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Myoung-Jin Kim
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Mun Gyeong Kwon
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Seong Don Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan 46083, Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province 63243, Republic of Korea.
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21
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Perera NCN, Godahewa GI, Hwang JY, Kwon MG, Hwang SD, Lee J. Molecular, structural, and functional comparison of N lobe and C lobe of the transferrin from rock bream, Oplegnathus fasciatus, with respect to its immune response. Fish Shellfish Immunol 2017; 68:299-309. [PMID: 28732766 DOI: 10.1016/j.fsi.2017.07.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 03/02/2017] [Revised: 06/07/2017] [Accepted: 07/17/2017] [Indexed: 06/07/2023]
Abstract
The iron-withholding strategy of innate immunity is an effective antimicrobial defense mechanism that combats microbial infection by depriving microorganisms of Fe3+, which is important for their growth and propagation. Transferrins (Tfs) are a group of iron-binding proteins that exert their antimicrobial function through Fe3+ sequestration. The current study describes both structural and functional characteristics of a transferrin ortholog from rock bream Oplegnathus fasciatus (RbTf). The RbTf cDNA possesses an open reading frame (ORF) of 2079 bp encoding 693 amino acids. It has a molecular mass of approximately 74 kDa and an isoelectric point of 5.4. In silico analysis revealed that RbTf has two conserved domains: N-terminal domain and C-terminal domain. Pairwise homology analysis and phylogenetic analysis revealed that RbTf shared the highest identity (82.6%) with Dicentrarchus labrax Tf. According to the genomic analysis, RbTf possesses 17 exons and 16 introns, similar to the other orthologs. Here, we cloned the N terminal and C terminal domains of RbTf to evaluate their distinct functional features. Results obtained through the CAS (chrome azurol S) assay confirmed the iron-binding ability of the RbTf, and it was further determined that the iron-binding ability of rRbTfN was higher than that of rRbTfC. The antimicrobial functions of the rRbTfN and the rRbTfC were confirmed via the iron-dependent bacterial growth inhibition assay. Tissue distribution profiling revealed a ubiquitous expression with intense expression in the liver. Temporal assessment revealed that RbTf increased after stimulation of LPS, Edwardsiella tarda, and Streptococcus iniae post injection (p.i.). These findings demonstrated that RbTf is an important antimicrobial protein that can combat bacterial pathogens.
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Affiliation(s)
- N C N Perera
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - G I Godahewa
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Jee Youn Hwang
- Aquatic Life Disease Control Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Mun Gyeong Kwon
- Aquatic Life Disease Control Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Seong Don Hwang
- Aquatic Life Disease Control Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea.
| | - Jehee Lee
- Department of Marine Life Sciences, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea.
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22
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Hwang JY, Ahn SJ, Kwon MG, Seo JS, Hwang SD, Son MH. Interferon-induced protein 56 (IFI56) is induced by VHSV infection but not by bacterial infection in olive flounder (Paralichthys olivaceus). Fish Shellfish Immunol 2017; 66:382-389. [PMID: 28499966 DOI: 10.1016/j.fsi.2017.05.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 02/22/2017] [Revised: 04/30/2017] [Accepted: 05/08/2017] [Indexed: 06/07/2023]
Abstract
Interferon-inducible protein 56 (IFI56, also known as ISG56/IFIT1, interferon-induced protein with tetratricopeptide repeats 1) is strongly induced in response to interferon and a potent inhibitor of viral replication and translational initiation. Here, we describe the identification of IFI56 (OfIFI56) in olive flounder, its characteristic features, and expression levels in various tissues before and after viral hemorrhagic septicemia virus (VHSV) infection. The full-length OfIFI56 sequence was identified from rapid amplification of cDNA ends PCR. The complete coding sequence of OfIFI56 is 1971 bp in length and encodes 431 amino acids. The putative OfIFI56 protein has multiple tetratricopeptide (TPR) motifs, which regulate diverse biological processes, such as organelle targeting, protein import, and vesicle fusion. Based on sequence analysis, the Larimichthys crocea IFI56 protein (61%) had the highest sequence homology to OfIFI56. In healthy olive flounder, OfIFI56 mRNA expression was detected in many tissues such as intestine, gill, head kidney, heart, spleen, and trunk kidney tissues. After VHSV challenge, OfIFI56 mRNA was significantly up-regulated in these tissues. Additionally, OfIFI56 expression was induced by poly I:C but not by Streptococcus parauberis and S. iniae infection or lipopolysaccharide injection in kidney and spleen tissues of olive flounder. These results demonstrate that piscine OfIFI56 expression is not induced by bacterial infection but is selectively induced by viral infection, especially VHSV, and that OfIFI56 may play an important role in the host response against VHSV infection.
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Affiliation(s)
- Jee Youn Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea.
| | - Sang Jung Ahn
- Fisheries R&D Management Center, Korea Institute of Marine Science & Technology Promotion (KIMST), Seoul 06775, Republic of Korea.
| | - Mun-Gyeong Kwon
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea.
| | - Jung Soo Seo
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea.
| | - Seong Don Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea.
| | - Maeng-Hyun Son
- Aquatic Disease Control Division, National Institute of Fisheries Science (NIFS), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 46083, Republic of Korea.
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23
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Kim KI, Cha SJ, Lee C, Baek H, Hwang SD, Cho MY, Jee BY, Park MA. Genetic relatedness of infectious hematopoietic necrosis virus (IHNV) from cultured salmonids in Korea. Arch Virol 2016; 161:2305-10. [PMID: 27255747 DOI: 10.1007/s00705-016-2913-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 01/25/2016] [Accepted: 05/25/2016] [Indexed: 11/25/2022]
Abstract
Infectious hematopoietic necrosis virus (IHNV; n = 18) was identified in the Korean national surveillance program between February 2013 and April 2015, suggesting that IHNV is a major viral pathogen in cultured salmonids. By phylogeny analysis, we found that the JRt-Nagano and JRt-Shizuoka groups could each be further subdivided into three distinct subtypes. The Korean strains were genetically similar to Japanese isolates, suggesting introduction from Japan. Interestingly, the amino acid sequences of the middle glycoprotein gene show that distinct Korean subtypes have circulated, indicating that the settled IHNVs might be evolved stably in cultured salmonid farm environments.
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Affiliation(s)
- Kwang Il Kim
- Aquaculture Industry Division, East Sea Fisheries Research Institute, Gangneung, Gangwon-do, 25435, Republic of Korea.
| | - Seung Joo Cha
- Inland Aquaculture Research Center, Jinhae, Gyeongsangnam-do, 51688, Republic of Korea
| | - Chu Lee
- Aquaculture Industry Division, East Sea Fisheries Research Institute, Gangneung, Gangwon-do, 25435, Republic of Korea
| | - Harim Baek
- Aquaculture Industry Division, East Sea Fisheries Research Institute, Gangneung, Gangwon-do, 25435, Republic of Korea
| | - Seong Don Hwang
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Mi Young Cho
- Pathology Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Bo Young Jee
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
| | - Myoung-Ae Park
- Aquatic Disease Control Division, National Institute of Fisheries Science, Busan, 46083, Republic of Korea
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24
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Bae JS, Jung JM, An CM, Kim JW, Hwang SD, Kwon MG, Park MA, Kim MC, Park CI. Piscidin: Antimicrobial peptide of rock bream, Oplegnathus fasciatus. Fish Shellfish Immunol 2016; 51:136-142. [PMID: 26876358 DOI: 10.1016/j.fsi.2016.02.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 11/20/2015] [Revised: 02/03/2016] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
The piscidin family consists of antimicrobial peptides (AMPs) that are mainly found in fish and are crucial effectors of fish innate immune responses. The piscidin family typically has broad-spectrum antimicrobial activity and can modulate immune responses. In this study, we cloned rock bream piscidin (Rbpisc) and investigated its gene expression and biological activity (including antimicrobial and cytotoxic activities). The coding region of Rbpisc consisted of 213 base pairs (bp) encoding 70 amino acid residues. The tertiary structure predicted for Rbpisc includes an amphipathic helix-loop-helix structure. The Rbpisc gene was highly expressed in the gills of healthy fish. The gene expression of Rbpisc increased in the gills after pathogen infection, while the expression was down-regulated in other tissues. A synthetic peptide based on the AMP 12 domain amino acid sequence of Rbpisc appeared to have broad-spectrum antimicrobial activity against various bacteria. However, the synthetic peptide exhibited weak haemolytic activity against fish erythrocytes. These results suggest that Rbpisc might play an important role in the innate immune responses of rock bream.
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Affiliation(s)
- Jin-Sol Bae
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea
| | - Ji-Min Jung
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea
| | - Cheul Min An
- Biotechnology Research Division, National Institute of Fisheries Science, 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Ju-Won Kim
- Biotechnology Research Division, National Institute of Fisheries Science, 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Seong Don Hwang
- Aquatic Life Disease Control Division, National Institute of Fisheries Science, 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Mun-Gyeong Kwon
- Aquatic Life Disease Control Division, National Institute of Fisheries Science, 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Myoung-Ae Park
- Aquatic Life Disease Control Division, National Institute of Fisheries Science, 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Mu-Chan Kim
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea
| | - Chan-Il Park
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea.
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25
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Kim SH, Kim JH, Park MA, Hwang SD, Kang JC. The toxic effects of ammonia exposure on antioxidant and immune responses in Rockfish, Sebastes schlegelii during thermal stress. Environ Toxicol Pharmacol 2015; 40:954-959. [PMID: 26528677 DOI: 10.1016/j.etap.2015.10.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 07/25/2015] [Revised: 10/15/2015] [Accepted: 10/16/2015] [Indexed: 06/05/2023]
Abstract
Rockfish, Sebastes schlegelii (mean weight 14.53 ± 1.14 cm, and mean weight 38.36 ± 3.45 g) were exposed for 4 weeks (2 weeks and 4 weeks) with the different levels of ammonia in the concentrations of 0, 0.1, 0.5, 1.0mg/L at 19 and 24°C. The ammonia exposure induced significant alterations in antioxidant responses. The activities of SOD, CAT, and GST were considerably increased by the ammonia exposure depending on water temperature, whereas the GSH level was notably decreased after 2 and 4 weeks. In the stress indicators, the cortisol and HSP 70 were significantly elevated by the exposure to ammonia depending on water temperature. In innate immune responses, the phagocytosis and lysozyme activity were notably decreased by ammonia exposure depending on water temperature after 2 and 4 weeks. The results suggest that ammonia exposure depending on water temperature can induce the considerable alterations in antioxidant responses, stress, and immune inhibition.
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Affiliation(s)
- Shin-Hu Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan 608-737, Republic of Korea
| | - Jun-Hwan Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan 608-737, Republic of Korea
| | - Myoung-Ae Park
- Aquatic life disease control division, National Fisheries Research and Development Institute, Busan 619-902, Republic of Korea
| | - Seong Don Hwang
- Aquatic life disease control division, National Fisheries Research and Development Institute, Busan 619-902, Republic of Korea
| | - Ju-Chan Kang
- Department of Aquatic Life Medicine, Pukyong National University, Busan 608-737, Republic of Korea.
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26
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Hwang SD, Bae JS, Jo DH, Kim KI, Cho MY, Jee BY, Park MA, Park CI. Gene expression and functional characterization of serum amyloid P component 2 in rock bream, Oplegnathus fasciatus. Fish Shellfish Immunol 2015; 47:521-527. [PMID: 26455663 DOI: 10.1016/j.fsi.2015.09.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 09/21/2015] [Accepted: 09/29/2015] [Indexed: 06/05/2023]
Abstract
Mammalian serum amyloid P component (SAP) recognizes a wide range of exogenous pathogenic substances and activates a complementary pathway leading to pathogen clearance. To determine the potential roles of SAP in the fish immune system, SAP (RbSAP2) gene was cloned from ESTs analysis of rock bream (Oplegnathus fasciatus), which consisted of a signal peptide and pentraxin domain. Phylogenetic analysis revealed that the RbSAP2 gene was classified with other known fish SAPs. RbSAP2 was highly expressed in the liver of healthy rock bream. Overall, pathogen exposure led to an induction of RbSAP2 in the liver and spleen, although this effect was not observed in the spleen following infection with Edwardsiella tarda. A high concentration of recombinant RbSAP2 (rRbSAP2) showed lower growth Streptococcus iniae than control in the absence of Ca(2+), whereas E. tarda growth was decreased by high concentration of rRbSAP in the presence of the Ca(2+). These results suggest that RbSAP plays an important role in the immune response against invading pathogens.
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Affiliation(s)
- Seong Don Hwang
- Aquatic Life Disease Control Division, National Fisheries Research & Development Institute, 216 Gijanghaean-Ro, Gijang-Eup, Gijang-Gun, Busan, 619-705, Republic of Korea
| | - Jin-Sol Bae
- Department of Marine Biology and Aquaculture, Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea
| | - Dong Hee Jo
- Department of Marine Biology and Aquaculture, Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea
| | - Kwang Il Kim
- Aquaculture Industry Division, East Sea Fisheries Research Institute, National Fisheries Research & Development Institute, 482 Sacheonhaean-Ro Yeongok-Myeon, Gangneung, Gangwon, 210-861, Republic of Korea
| | - Mi Young Cho
- Aquatic Life Disease Control Division, National Fisheries Research & Development Institute, 216 Gijanghaean-Ro, Gijang-Eup, Gijang-Gun, Busan, 619-705, Republic of Korea
| | - Bo Young Jee
- Aquatic Life Disease Control Division, National Fisheries Research & Development Institute, 216 Gijanghaean-Ro, Gijang-Eup, Gijang-Gun, Busan, 619-705, Republic of Korea
| | - Myoung-Ae Park
- Aquatic Life Disease Control Division, National Fisheries Research & Development Institute, 216 Gijanghaean-Ro, Gijang-Eup, Gijang-Gun, Busan, 619-705, Republic of Korea
| | - Chan-Il Park
- Department of Marine Biology and Aquaculture, Institute of Marine Industry, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea.
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27
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Bae JS, Shim SH, Hwang SD, Park MA, Jee BY, An CM, Kim YO, Kim JW, Park CI. Expression analysis and biological activity of moronecidin from rock bream, Oplegnathus fasciatus. Fish Shellfish Immunol 2014; 40:345-353. [PMID: 25050859 DOI: 10.1016/j.fsi.2014.07.023] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 07/10/2014] [Accepted: 07/12/2014] [Indexed: 06/03/2023]
Abstract
The piscidin-family, one of antimicrobial peptides (AMPs) mainly distributed in fish, is crucial effectors of fish innate immune response. Piscidin-family typically has broad-spectrum antimicrobial activity and the ability to modulate the immune response. In this study, we identified moronecidin (Rbmoro) included in piscidin-family from rock bream and investigated its gene expression using quantitative real-time PCR and biological activity (including antimicrobial and cytotoxic activity). The coding region of Rbmoro was 204 bp encoding 67 amino acid residues. Tertiary structure prediction of Rbmoro showed an amphipathic α-helical structure. Rbmoro gene was widely expressed in different tissues of healthy fish. Additionally, Rbmoro gene expression was induced in all tested tissues after infection with Edwardsiella tarda, Streptococcus iniae and red seabream iridovirus. We synthesized mature peptide of Rbmoro based on amino acid sequence of its AMP 12 domain, and the synthetic peptide appeared broad-spectrum antimicrobial activity to various bacteria. However, the synthetic peptide has weak haemolytic activity against fish erythrocytes. These results suggest that Rbmoro might play an important role in innate immune response of rock bream.
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Affiliation(s)
- Jin-Sol Bae
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Sang Hee Shim
- School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea
| | - Seong Don Hwang
- Aquatic Life Disease Control Division, National Fisheries Research and Development Institute (NFRDI), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Myoung-Ae Park
- Aquatic Life Disease Control Division, National Fisheries Research and Development Institute (NFRDI), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Bo-Young Jee
- Aquatic Life Disease Control Division, National Fisheries Research and Development Institute (NFRDI), 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Cheul-Min An
- Biotechnology Research Division, NFRDI, 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Young-Ok Kim
- Biotechnology Research Division, NFRDI, 216 Gijanghaean-ro, Gijang-eup, Gijang-gun, Busan 619-705, Republic of Korea
| | - Ju-Won Kim
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea
| | - Chan-Il Park
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 455, Tongyeong 650-160, Republic of Korea.
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28
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Kurokawa S, Kabayama J, Hwang SD, Nho SW, Hikima JI, Jung TS, Kondo H, Hirono I, Takeyama H, Mori T, Aoki T. Whole genome analyses of marine fish pathogenic isolate, Mycobacterium sp. 012931. Mar Biotechnol (NY) 2014; 16:572-579. [PMID: 24879010 DOI: 10.1007/s10126-014-9576-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 04/28/2014] [Indexed: 06/03/2023]
Abstract
Mycobacterium is a genus within the order Actinomycetales that comprises of a large number of well-characterized species, several of which includes pathogens known to cause serious disease in human and animal. Here, we report the whole genome sequence of Mycobacterium sp. strain 012931 isolated from the marine fish, yellowtail (Seriola quinqueradiata). Mycobacterium sp. 012931 is a fish pathogen causing serious damage to aquaculture farms in Japan. DNA dot plot analysis showed that Mycobacterium sp. 012931 was more closely related to Mycobacterium marinum when compared across several Mycobacterium species. However, little conservation of the gene order was observed between Mycobacterium sp. 012931 and M. marinum genome. The annotated 5,464 genes of Mycobacterium sp. 012931 was classified into 26 subsystems. The insertion/deletion gene analysis shows Mycobacterium sp. 012931 had 643 unique genes that were not found in the M. marinum strains. In the virulence, disease, and defense subsystem, both insertion and deletion genes of Mycobacterium sp. 012931 were associated with the PPE gene cluster of Mycobacteria. Of seven plcB genes in Mycobacterium sp. 012931, plcB_2 and plcB_3 showed low identities with those of M. marinum strains. Therefore, Mycobacterium sp. 012931 has differences on genetic and virulence from M. marinum and may induce different interaction mechanisms between host and pathogen.
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Affiliation(s)
- Satoru Kurokawa
- Agricultural and Veterinary Division, Animal Health Department of Research and Development, Meiji Seika Pharma, 2-4-16, Kyobashi, Chuo-ku, Tokyo, 104-8002, Japan
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29
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Hwang SD, Shim SH, Kwon MG, Chae YS, Shim WJ, Jung JH, Kim JW, Park CI. Molecular cloning and expression analysis of two lipopolysaccharide-induced TNF-α factors (LITAFs) from rock bream, Oplegnathus fasciatus. Fish Shellfish Immunol 2014; 36:467-474. [PMID: 24394623 DOI: 10.1016/j.fsi.2013.12.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [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: 10/08/2013] [Revised: 12/17/2013] [Accepted: 12/19/2013] [Indexed: 06/03/2023]
Abstract
Lipopolysaccharide (LPS)-induced tumor necrosis factor (TNF)-α factor (LITAF) plays an important role controlling the expression of TNF-α and the other cytokine genes in the presence of LPS. However, two LITAF homologues have not been characterized in fish. In this study, we cloned two distinct LITAF (RbLITAF1 and RbLITAF2) cDNAs from rock bream (Oplegnathus fasciatus) and characterized their expression profiles after infection with Edwardsiella tarda, Streptococcus iniae or red seabream iridovirus (RSIV). The coding regions of RbLITAF1 and RbLITAF2 cDNAs were 492 bp and 417 bp, encoding 153 and 138 amino acid residues, respectively. The genes consisted of a LITAF domain. RbLITAF1 was highly expressed in the spleen and heart of healthy rock bream, whereas RbLITAF2 was highly expressed in the gill, intestine and stomach. In spleen, the gene expression of RbLITAF1 and RbLITAF2 were increased until 5 days post-infection (dpi), and then decreased at 7 dpi. In kidney, E. tarda and RSIV infection led to induction of the RbLITAF1 gene at 1 dpi, RbLITAF2 gene was down-regulated after pathogen infection. These results suggest that RbLITAFs may be involved in the LITAF-mediated immune response and regulate systemic immune responses against pathogen infection.
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Affiliation(s)
- Seong Don Hwang
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea
| | - Sang Hee Shim
- School of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 712-749, Republic of Korea
| | - Mun-Gyeong Kwon
- Pathology Division, National Fisheries Research and Development Institute, Busan 619-900, Republic of Korea
| | - Young Sun Chae
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, 391 Jangbuk-Ri, Jangmok-Myon, Geoje 656-834, Republic of Korea
| | - Won Joon Shim
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, 391 Jangbuk-Ri, Jangmok-Myon, Geoje 656-834, Republic of Korea
| | - Jee-Hyun Jung
- Oil & POPs Research Group, Korea Institute of Ocean Science & Technology, 391 Jangbuk-Ri, Jangmok-Myon, Geoje 656-834, Republic of Korea
| | - Ju-Won Kim
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea
| | - Chan-Il Park
- Department of Marine Biology and Aquaculture, College of Marine Science, Gyeongsang National University, 38 Cheondaegukchi-Gil, Tongyeong, Gyeongnam 650-160, Republic of Korea.
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Aoki T, Hikima JI, Hwang SD, Jung TS. Innate immunity of finfish: primordial conservation and function of viral RNA sensors in teleosts. Fish Shellfish Immunol 2013; 35:1689-1702. [PMID: 23462146 DOI: 10.1016/j.fsi.2013.02.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [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: 11/19/2012] [Revised: 01/25/2013] [Accepted: 02/08/2013] [Indexed: 06/01/2023]
Abstract
During the past decade, huge progress has been made in research into teleost PAMPs (pathogen-associated molecule patterns) recognition receptors (PRRs). Numerous fish PRR genes have been identified, and the primordial functions of PRRs involved in the innate immune response to viral infection (especially those responsible for sensing viral RNA) have been increasingly clarified in teleosts. Particular progress has been made in our understanding of Toll-like receptors (TLRs) and retinoic acid inducible gene I (RIG-I)-like receptors (RLRs). However, there are important evolutionary differences between teleosts and mammals; for instance, seven TLR repertoires (TLR5S, -14, -19, -20, -21, -22 and -23) are present in teleosts but not in mammals, indicating that some TLRs likely possess different functions. Thus, comparison of PRRs in teleosts and mammals may help us understand the immune responses triggered by host-pathogen interactions in teleosts. In this article, the evolutionary conservations and divergences in the PRR mechanisms of teleosts and mammals are examined, with a focus on their molecular features and the recognition of viral RNA by fish TLRs and RLRs. In addition, the mechanism of type I interferon gene expression in teleosts, which is enhanced after the recognition of viral RNA by fish TLRs and RLRs, is also introduced.
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Affiliation(s)
- Takashi Aoki
- Consolidated Research Institute for Advanced Science and Medical Care, Waseda University, 513, Wasedatsurumaki-cho, Shinjuku-ku, Tokyo 162-0041, Japan; Aquatic Biotechnology Center, College of Veterinary Medicine, Gyeongsang National University, 900, Gajwa-dong, Jinju, Gyeongnam 660-710, South Korea.
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31
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Bae JS, Shim SH, Hwang SD, Kim JW, Park DW, Park CI. Molecular cloning and expression analysis of interleukin (IL)-15 and IL-15 receptor α from rock bream, Oplegnathus fasciatus. Fish Shellfish Immunol 2013; 35:1209-1215. [PMID: 23911652 DOI: 10.1016/j.fsi.2013.07.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 04/24/2013] [Revised: 07/19/2013] [Accepted: 07/24/2013] [Indexed: 06/02/2023]
Abstract
Mammalian interleukin (IL)-15 plays an important role in the activation of CD8(+) T cells and natural killer (NK) cells along with its receptor α (IL-15Rα). To understand the potential roles of IL-15 and IL-15Rα in fish, we identified IL-15 and IL-15Rα cDNA from rock bream (Oplegnathus fasciatus) and investigated their gene expression profiles after bacterial and viral infection. Coding regions of rock bream (Rb) IL-15 and RbIL-15Rα cDNAs were 534 and 402 bp encoding 177 and 133 amino acid residues, respectively. The sushi domain of IL-15Rα was highly conserved between rock bream and other species. Unlike other IL-15Rαs, RbIL-15Rα does not have a transmembrane region. Gene expression of RbIL-15 and RbIL-15Rα was widely expressed in different tissues of healthy fish, especially immune-related tissues. RbIL-15 and RbIL-15Rα were highly induced in the kidney and spleen after infection with Edwardsiella tarda, Streptococcus iniae and red seabream iridovirus. Gene expression patterns of RbIL-15 and RbIL-15Rα were similar in the kidney and spleen after pathogen infection. However, these genes were differentially induced in the liver after pathogen infection. These results suggest that the different responses of RbIL-15 and RbIL-15Rα to pathogen infection may be induced by different tissues or cell types.
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Affiliation(s)
- Jin-Sol Bae
- Department of Marine Biology & Aquaculture, College of Marine Science, Gyeongsang National University, 445, Inpyong-dong, Tongyeong, Gyeongnam 650-160, Republic of Korea
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32
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Kurokawa S, Kabayama J, Hwang SD, Nho SW, Hikima JI, Jung TS, Sakai M, Kondo H, Hirono I, Aoki T. Comparative genome analysis of fish and human isolates of Mycobacterium marinum. Mar Biotechnol (NY) 2013; 15:596-605. [PMID: 23728847 DOI: 10.1007/s10126-013-9511-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 04/09/2013] [Indexed: 06/02/2023]
Abstract
Mycobacterium marinum is a major causative agent of mycobacteriosis in fish that has a broad range of hosts, including in human isolates. So far, genomic analyses have focused on the human isolate. Here, we compared the draft genome sequences of two strains of M. marinum isolated from fish (MB2 and Europe) with the M. marinum M isolated from humans. M. marinum MB2 and Europe have single, circular chromosomes of 6,134,389 and 6,029,340 bp, and average G + C contents of 65.7 and 65.5 %, respectively. A total of 5,464 coding DNA sequences were annotated in both M. marinum MB2 and Europe genome. Dot plot analyses showed that M. marinum MB2 and Europe were closer to M. marinum M when compared to three other Mycobacterium species. The insertion/deletion gene analysis showed that M. marinum MB2 and Europe contained 342 and 487 genes that were not found in M. marinum M, and lacked 625 and 776 genes found in M. marinum M, respectively. Most of the inserted and deleted genes were classified in the fatty acid, lipid, and isoprenoid subsystem and the virulence, disease, and defense subsystem. Therefore, these results provide insights into the genomic diversity associated with variable hosts and pathogens.
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Affiliation(s)
- Satoru Kurokawa
- Animal Health Department of Research and Development Agricultural and Veterinary Division, Meiji Seika Pharma, 2-4-16, Kyobashi, Chuo-ku, Tokyo, 104-8002, Japan
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33
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Kim JW, Park CI, Hwang SD, Jeong JM, Kim KH, Kim DH, Shim SH. Molecular characterisation and expression analysis of the cathepsin H gene from rock bream (Oplegnathus fasciatus). Fish Shellfish Immunol 2013; 35:188-194. [PMID: 23629026 DOI: 10.1016/j.fsi.2013.04.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 03/26/2013] [Accepted: 04/17/2013] [Indexed: 06/02/2023]
Abstract
Cathepsins are lysosomal cysteine proteases belonging to the papain family, whose members play important roles in normal metabolism for the maintenance of cellular homeostasis. Rock bream (Oplegnathus fasciatus) cathepsin H (RbCTSH) cDNAs were identified by expressed sequence tag analysis of a lipopolysaccharide-stimulated rock bream liver cDNA library. The full-length RbCTSH cDNA (1326 bp) contained an open reading frame of 978 bp encoding 325 amino acids. The presence of an ERFNIN-like motif was predicted in the propeptide region of RbCTSH. Furthermore, multiple alignments showed that the EPQNCSAT region was well conserved among other cathepsin H sequences. Phylogenetic analysis revealed that RbCTSH is most closely related to Nile tilapia cathepsin H. RbCTSH was expressed significantly in the intestine, spleen, head kidney and stomach. RbCTSH mRNA expression was also examined in several tissues under conditions of bacterial and viral challenge. All examined tissues of fish infected with Edwardsiella tarda, Streptococcus iniae and red sea bream iridovirus (RSIV) showed significant increases in RbCTSH expression compared to the control. In the kidney and spleen, RbCTSH mRNA expression was upregulated markedly following infection with bacterial pathogens. These findings indicate that RbCTSH plays an important role in the innate immune response of rock bream. Furthermore, these results provide important information for the identification of other cathepsin H genes in various fish species.
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Affiliation(s)
- Ju-Won Kim
- Department of Marine Biology & Aquaculture, Institute of Marine Industry, College of Marine Science, Gyeongsang National University, Tongyeong, Republic of Korea
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34
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Kurokawa S, Kabayama J, Fukuyasu T, Hwang SD, Park CI, Park SB, del Castillo CS, Hikima JI, Jung TS, Kondo H, Hirono I, Takeyama H, Aoki T. Bacterial classification of fish-pathogenic Mycobacterium species by multigene phylogenetic analyses and MALDI Biotyper identification system. Mar Biotechnol (NY) 2013; 15:340-348. [PMID: 23229498 DOI: 10.1007/s10126-012-9492-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 09/19/2012] [Indexed: 06/01/2023]
Abstract
Mycobacterium marinum is difficult to distinguish from other species of Mycobacterium isolated from fish using biochemical methods. Here, we used genetic and proteomic analyses to distinguish three Mycobacterium strains: M. marinum strains MB2 and Europe were isolated from tropical and marine fish in Thailand and Europe, and Mycobacterium sp. 012931 strain was isolated from yellowtail in Japan. In phylogenetic trees based on gyrB, rpoB, and Ag85B genes, Mycobacterium sp. 012931 clustered with M. marinum strains MB2 and Europe, but in trees based on 16S rRNA, hsp65, and Ag85A genes Mycobacterium sp. 012931 did not cluster with the other strains. In proteomic analyses using a Bruker matrix-assisted laser desorption ionization Biotyper, the mass profile of Mycobacterium sp. 012931 differed from the mass profiles of the other two fish M. marinum strains. Therefore, Mycobacterium sp. 012931 is similar to M. marinum but is not the same, suggesting that it could be a subspecies of M. marinum.
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Affiliation(s)
- Satoru Kurokawa
- Animal Health Department of Research and Development Agricultural and Veterinary Division, Meiji Seika Pharma, 2-4-16, Kyobashi, Chuo-ku, Tokyo, 104-8002, Japan
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35
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Hwang SD, Kim JW, Kim MC, Kim DH, Park CI. First molecular cloning and gene expression analysis of a teleost CD200 (OX-2) glycoprotein from rock bream, Oplegnathus fasciatus. Fish Shellfish Immunol 2013; 34:378-382. [PMID: 23128045 DOI: 10.1016/j.fsi.2012.10.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2012] [Revised: 09/26/2012] [Accepted: 10/14/2012] [Indexed: 06/01/2023]
Abstract
CD200 plays an important role in delivering an immunoregulatory signal to the immune system through interaction with its receptor. However, CD200 has not been characterized and its function in teleosts is unknown. In this study, the rock bream (Oplegnathus fasciatus) CD200 gene (RbCD200) was cloned and its expression profile was analyzed after infection with Edwardsiella tarda, Streptococcus iniae or red seabream iridovirus (RSIV). The coding region of RbCD200 cDNA was 855 bp, encoding 284 amino acid residues. The gene consisted of two extracellular Ig-like domains and a transmembrane domain. RbCD200 was highly expressed in the brain, erythrocytes, intestine and stomach of healthy rock bream. In the spleen, RbCD200 gene expression was down-regulated until 48 h after E. tarda exposure, except at 12 h RbCD200 gene expression was down-regulated then up-regulated at 12 h and 24 h after infection with S. iniae and RSIV, respectively. In the whole kidney, the RbCD200 gene was down-regulated in response to infection with E. tarda and S. iniae. However, RSIV infection increased RbCD200 gene expression in whole kidney until 48 h. These results suggest that RbCD200 is differentially expressed in the spleen and whole kidney after infection with different pathogens.
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Affiliation(s)
- Seong Don Hwang
- Institute of Marine Industry, College of Marine Science, Gyeongsang National University, Tongyeong, Gyeongnam 650-160, Republic of Korea
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36
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Punnarak P, Santos MD, Hwang SD, Kondo H, Hirono I, Kikuchi Y, Aoki T. RNA aptamers inhibit the growth of the fish pathogen viral hemorrhagic septicemia virus (VHSV). Mar Biotechnol (NY) 2012; 14:752-761. [PMID: 22527269 DOI: 10.1007/s10126-012-9448-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Accepted: 02/18/2012] [Indexed: 05/31/2023]
Abstract
Viral hemorrhagic septicemia virus (VHSV) is a serious disease impacting wild and cultured fish worldwide. Hence, an effective therapeutic method against VHSV infection needs to be developed. Aptamer technology is a new and promising method for diagnostics and therapeutics. It revolves around the use of an aptamer molecule, an artificial ligand (nucleic acid or protein), which has the capacity to recognize target molecules with high affinity and specificity. Here, we aimed at selecting RNA aptamers that can specifically bind to and inhibit the growth of a strain of fish VHSV both in vitro and in vivo. Three VHSV-specific RNA aptamers (F1, F2, and C6) were selected from a pool of artificially and randomly produced oligonucleotides using systematic evolution of ligands by exponential enrichment. The three RNA aptamers showed obvious binding to VHSV in an electrophoretic mobility shift assay but not to other tested viruses. The RNA aptamers were tested for their ability to inhibit VHSV in vitro using hirame natural embryo (HINAE) cells. Cytopathic effect and plaque assays showed that all aptamers inhibited the growth of VHSV in HINAE cells. In vivo tests using RNA aptamers produced by Rhodovulum sulfidophilum showed that extracellular RNA aptamers inhibited VHSV infection in Japanese flounder. These results suggest that the RNA aptamers are a useful tool for protection against VHSV infection in Japanese flounder.
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Affiliation(s)
- Porntep Punnarak
- Laboratory of Genome Science, Graduate School of Marine Science and Technology, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo, 108-8477, Japan
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Hwang SD, Midorikawa N, Punnarak P, Kikuchi Y, Kondo H, Hirono I, Aoki T. Inhibition of Hirame rhabdovirus growth by RNA aptamers. J Fish Dis 2012; 35:927-934. [PMID: 22943666 DOI: 10.1111/jfd.12000] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2012] [Revised: 07/19/2012] [Accepted: 07/24/2012] [Indexed: 06/01/2023]
Abstract
RNA aptamers are artificial nucleic acids that specifically bind to a wide variety of targets. They are an effective tool for pharmaceutical research and development of antiviral agents. Here, we describe four Hirame rhabdovirus (HIRRV)-RNA aptamers (H1, H2, H3 and H4) that we obtained from an in vitro process called the systematic evolution of ligands by exponential enrichment (SELEX). The HIRRV-RNA aptamers specifically bind to HIRRV. Hirame natural embryo (HINAE) cells treated with virus and the RNA aptamer showed a decrease in appearance of cytopathic effect when compared with control (treated only with virus). Rhodovulum sulfidophilum was transformed with genes for the RNA aptamers, and the aptamers were detected in the culture medium, indicating that they were secreted from the cells. Thus, the recombinant R. sulfidophilum might be a powerful tool for the prevention of HIRRV in aquaculture.
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Affiliation(s)
- S D Hwang
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Minato-ku, Tokyo, Japan
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Hwang SD, Ohtani M, Hikima JI, Jung TS, Kondo H, Hirono I, Aoki T. Molecular cloning and characterization of Toll-like receptor 3 in Japanese flounder, Paralichthys olivaceus. Dev Comp Immunol 2012; 37:87-96. [PMID: 22206867 DOI: 10.1016/j.dci.2011.12.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Revised: 12/03/2011] [Accepted: 12/05/2011] [Indexed: 05/31/2023]
Abstract
Mammalian Toll-like receptor 3 (TLR3) recognizes extracellular and intracellular viral dsRNA, and then initiates signaling cascades leading to NF-κB activation and interferon (IFN) production. To understand the roles of TLR3 in the fish immune system, TLR3 gene (JfTLR3) was identified from Japanese flounder (Paralichthys olivaceus), which consisted of 4 exons and 3 introns. Its expression in peripheral blood leukocytes increased upon stimulation with poly I:C and CpG ODN 1668. Exposure to viral hemorrhagic septicemia virus increased expression of JfTLR3 in the blood, liver, head kidney and spleen. Intracellular poly I:C stimulation in JfTLR3-overexpressing YO-K cells significantly induced IFN-inducible and NF-κB-regulated genes. NF-κB activity in JfTLR3-overexpressing YO-K cells was significantly induced by intracellular poly I:C while expression of IFN-inducible genes and NF-κB reporter activity in JfTLR3-overexpressing HINAE cells increased upon stimulation by extracellular poly I:C. These results suggest that JfTLR3 plays an important role in the induction of antiviral immune response.
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Affiliation(s)
- Seong Don Hwang
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo 108-8477, Japan
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Ohtani M, Hikima JI, Hwang SD, Morita T, Suzuki Y, Kato G, Kondo H, Hirono I, Jung TS, Aoki T. Transcriptional regulation of type I interferon gene expression by interferon regulatory factor-3 in Japanese flounder, Paralichthys olivaceus. Dev Comp Immunol 2012; 36:697-706. [PMID: 22067740 DOI: 10.1016/j.dci.2011.10.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Revised: 10/19/2011] [Accepted: 10/23/2011] [Indexed: 05/31/2023]
Abstract
Type I interferon (IFN) induces the antiviral response in innate immunity. The type I IFN gene cloned from Japanese flounder (Paralichthys olivaceus) has a length of 1189 bp and consisting of 5 exons and 4 introns. In a phylogenetic tree of type I IFNs, Japanese flounder grouped with other Acanthopterygii. To gain insight into the transcriptional regulation of IFN gene, the 1.36 kb 5'-upstream region including numerous canonical motifs to bind transcription factors [for example, IFN regulatory factor (IRF)] was analyzed. In HINAE cells using a luciferase reporter assay, poly I:C-responsive transcriptional activity was found in the region from -634 to -179 bp. This region includes several IRF motifs. In the presence of poly I:C, overexpression of IRF3 and RLR strongly enhanced transcriptional activity. These results suggest that the transcriptional regulation of Japanese flounder type I IFN is regulated by IRF3 after triggering with dsRNA sensors.
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Affiliation(s)
- Maki Ohtani
- Aquatic Biotechnology Center, College of Veterinary Medicine, Gyeongsang National University, 900 Gajwa-dong, Jinju, Gyeongnam 660-710, South Korea
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Hwang SD, Fuji K, Takano T, Sakamoto T, Kondo H, Hirono I, Aoki T. Linkage mapping of toll-like receptors (TLRs) in Japanese flounder, Paralichthys olivaceus. Mar Biotechnol (NY) 2011; 13:1086-1091. [PMID: 21494881 DOI: 10.1007/s10126-011-9371-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Accepted: 03/23/2011] [Indexed: 05/30/2023]
Abstract
Toll-like receptors (TLRs) are responsible for the recognition of specific pathogen-associated molecular patterns and consequently activate signal pathways leading to inflammatory and interferon responses. The region surrounding several TLRs was previously found to be associated with resistance to specific disease. Hence, we determined the location of 11 TLRs in Japanese flounder (Paralichthys olivaceus) using polymorphic microsatellite markers. TLR1 and TLR3 were located on linkage group (LG) 21 and 7, respectively. Membrane TLR5 and soluble TLR5 were mapped to LG22. TLR7 and TLR8 were mapped to LG3. TLR9 was found on LG1 and TLR14 and TLR21 were located on the same linkage group, LG10. TLR22 was found on LG8. Interestingly, TLR2 was mapped with the previously reported Poli9-8TUF microsatellite marker which is tightly associated with lymphocystis virus disease resistance. Therefore, TLR2 is a candidate gene for resistance to lymphocystis disease. These results imply that the location of a TLR associated with a particular disease may be valuable for the research on the relationship between host immune response and disease resistance.
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Affiliation(s)
- Seong Don Hwang
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo 108-8477, Japan
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Hwang SD, Kondo H, Hirono I, Aoki T. Molecular cloning and characterization of Toll-like receptor 14 in Japanese flounder, Paralichthys olivaceus. Fish Shellfish Immunol 2011; 30:425-429. [PMID: 20728538 DOI: 10.1016/j.fsi.2010.08.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2010] [Revised: 07/27/2010] [Accepted: 08/15/2010] [Indexed: 05/29/2023]
Abstract
Toll-like receptors (TLRs) are essential for activation of the innate immune system in response to invading pathogens. TLR14, which is unique to fish, has been identified in several fish species, but its function is unclear. In this study, Japanese flounder (Paralichthys olivaceus) TLR14 gene (JfTLR14) was cloned and its expression profiles were analyzed after infection with viral hemorrhagic septicemia virus, gram-positive Streptococcus iniae and gram-negative Edwardsiella tarda. The coding region of JfTLR14 cDNA was 2,607 bp, encoding 878 amino acid residues. JfTLR14 was highly expressed in head kidney of healthy flounder. In response to infection with VHSV and S. iniae, the JfTLR14 gene was up-regulated at only 1 day post-infection (dpi). However, E. tarda infection increased JfTLR14 gene expression from 1 to 6 dpi. These results imply that JfTLR14 participates more in the immune response against E. tarda infection than in the immune responses to other pathogen infections.
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Affiliation(s)
- Seong Don Hwang
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo, 108-8477, Japan
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Hwang SD, Asahi T, Kondo H, Hirono I, Aoki T. Molecular cloning and expression study on Toll-like receptor 5 paralogs in Japanese flounder, Paralichthys olivaceus. Fish Shellfish Immunol 2010; 29:630-638. [PMID: 20561590 DOI: 10.1016/j.fsi.2010.06.011] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 05/22/2010] [Accepted: 06/08/2010] [Indexed: 05/29/2023]
Abstract
Toll-like receptor (TLR) 5 is responsible for the bacterial flagellin recognition in vertebrates. Synergistic role of TLR 5 membrane form (TLR 5M) and TLR 5 soluble form (TLR 5S) have been reported from the study on rainbow trout. This system is regarded as the unique system in teleost fish. However, systemic response of TLR 5 genes in teleost fish has not been fully understood. Hence, we cloned Japanese flounder (Paralichthys olivaseus) TLR 5M and TLR 5S genes and their expressions were analyzed. The coding region of Japanese founder TLR 5M and TLR 5S cDNA were 2670 bp and 1923 bp, encoding 889 and 640 amino acid residues, respectively. The Japanese flounder TLR 5M was composed of an extracellular leucine rich repeats (LRRs), a transmembrane and an intracellular Toll/interleukin-1 receptor (TIR) domains, whereas TLR 5S possessed only the LRR domain. TLR 5M was highly expressed in the gill, head kidney, heart and liver. TLR 5S was highly expressed in the brain, head kidney and heart. Flagellin stimulation (1 and 5 microg/ml) led to strong gene expression of TLR 5S in peripheral blood leukocytes (PBLs) and liver cells. In contrast to TLR 5S, TLR 5M was down-regulated until 3 h after flagellin stimulation in PBLs and liver cells. The flagellin stimulation also resulted in the production of the flounder IL-1beta and IL-6 from the liver cells and PBLs. The gene expression of TLR 5M was highly induced in the liver, while TLR 5S gene expression was drastically increased in the intestine following challenge with Edwardsiella tarda. Increased number of TLR 5M- and 5S-expressing cell populations were detected by in situ hybridization in the lamina propria of the intestine and liver after E. tarda infection, respectively. These results imply that the expression of these TLR 5 paralogs in Japanese flounder are differently regulated in the whole body and play important roles in the immune response against bacterial pathogens.
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Affiliation(s)
- Seong Don Hwang
- Laboratory of Genome Science, Tokyo University of Marine Science and Technology, Konan 4-5-7, Minato-ku, Tokyo, 108-8477, Japan
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Park MS, Yim AS, Chung SH, Lee EY, Cha MK, Kim JH, Song KI, Han DC, Hwang SD, Moon C, Lee HB. Effect of prolonged subcutaneous implantation of peritoneal catheter on peritonitis rate during CAPD: a prospective randomized study. Blood Purif 2000; 16:171-8. [PMID: 9681160 DOI: 10.1159/000014331] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We conducted a prospective randomized controlled study to confirm our earlier observation that prolonged subcutaneous implantation of peritoneal catheter reduced peritonitis rate when compared to retrospective data from patients with catheters placed by conventional access technique. A total of 60 patients were randomized into two groups: 30 patients had catheters left implanted subcutaneously for 6 weeks (I) and the other 30 patients had catheters inserted by conventional technique and had 6 weeks of break-in period (C). Subgroups of 15 patients each with new and conventional techniques used Y-connector (IY, CY) and remaining patients used standard spikes (IS, CS). Mean age was 47.7 years (range 16-71); 61.0% were male and 44.1% diabetics. Peritonitis, exit site infection, simultaneous peritonitis and exit site infection, and complication related to Staphylococcus or Pseudomonas infections were observed for up to 2 years in each patient after initiation of bag exchange or until termination of CAPD by transfer to hemodialysis or by death. Total duration of observation was 493.2 patient-months for new access technique and 409.6 patient-months for conventional technique. Patients in IY group had the lowest incidence of peritonitis (1/14.9 patient-months) and exit site infection (1/16.8 patient-months) among four subgroups. Peritonitis rate in IY was significantly lower compared to CY or CS. The total peritonitis-free period in those patients who did not experience peritonitis during the observation period was also significantly longer in IY (120 patient-months) than in CY (26 patient-months), IS (10.6 patient-months), or CS (10.4 patient-months). Simultaneous peritonitis and exit site infection was observed in none of IY group but 3 episodes in CY, 4 episodes in IS, and 3 episodes in CS. The rates of complications related to Staphylococcus aureus and Pseudomonas infections were also significantly lower in IY than in CY, IS, or CS. Technique survival did not differ between the two groups. The present results confirm our previous observation that the new access technique reduces the incidence of peritonitis probably by reducing infection via periluminal route. The Y-connector system further reduces peritonitis rate by reducing infection via intraluminal route.
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Affiliation(s)
- M S Park
- Hyonam Kidney Laboratory, Soon Chun Hyang University, Seoul, Korea
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Park MS, Lee HA, Chu WS, Yang DH, Hwang SD. Peritoneal accumulation of AGE and peritoneal membrane permeability. Perit Dial Int 2000; 20:452-60. [PMID: 11007378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
BACKGROUND In continuous ambulatory peritoneal dialysis (CAPD), the peritoneal membrane is continuously exposed to high-glucose-containing dialysis solutions. Abnormally high glucose concentration in the peritoneal cavity may enhance advanced glycosylation end-product (AGE) formation and accumulation in the peritoneum. Increased AGE accumulation in the peritoneum, decreased ultrafiltration volume, and increased peritoneal permeability in long-term dialysis patients have been reported. AIM The purpose of the study was to evaluate the relation between peritoneal membrane permeability and peritoneal accumulation of AGE. METHODS Peritoneal membrane permeability was evaluated by peritoneal equilibration test (PET) using dialysis solutions containing 4.25% glucose. Serum, dialysate, and peritoneal tissue levels of AGE were measured by ELISA method using polyclonal anti-AGE antibody. Peritoneal biopsy was performed during peritoneal catheter insertion [new group (group N), n = 18] and removal [long-term group (group LT), n = 10]. Peritoneal catheters were removed due to exit-site infection not extended into the internal cuff (n = 6) and ultrafiltration failure (n = 4) after 51.6+/-31.5 months (13 - 101 months) of dialysis. PET data obtained within 3 months after the initiation of CAPD or before catheter removal were included in this study. Ten patients in group N and 4 patients in group LT were diabetic. Patients in group LT were significantly younger (46.5+/-11.1 years vs 57.5+/-1.3 years) and experienced more episodes of peritonitis (3.5+/-2.1 vs 0.2+/-0.7) than group N. RESULTS Peritoneal tissue AGE level in group LT was significantly higher than in group N, in both nondiabetic (0.187+/-0.108 U/mg vs 0.093+/-0.08 U/mg of hydroxyproline, p < 0.03) and diabetic patients (0.384+/-0.035 U/mg vs 0.152+/-0.082 U/mg of hydroxyproline, p < 0.03), while serum and dialysate levels did not differ between the groups in both nondiabetic and diabetic patients. Drain volume (2600+/-237 mL vs 2766+/-222 mL, p = 0.07) and D4/D0 glucose (0.229+/-0.066 vs 0.298+/-0.081, p < 0.009) were lower, and D4/P4 creatinine (0.807+/-0.100 vs 0.653+/-0.144, p< 0.0001) and D1/P1 sodium (0.886+/-0.040 vs 0.822+/-0.032, p < 0.0003) were significantly higher in group LT than in group N. On linear regression analysis, AGE level in the peritoneum was directly correlated with duration of CAPD (r = 0.476, p = 0.012), number of peritonitis episodes (r = 0.433, p = 0.0215), D4/P4 creatinine (r = 0.546, p < 0.027), and D1/P1 sodium (r = 0.422, p = 0.0254), and inversely correlated with drain volume (r = 0.432, p = 0.022) and D4/D0 glucose (r = 0.552, p < 0.0023). AGE level in the peritoneal tissue and dialysate were significantly higher in diabetics than in nondiabetics in group LT, while these differences were not found in group N. Serum AGE level did not differ between nondiabetics and diabetics in either group N or group LT. Drain volume and D4/D0 glucose were lower and D4/P4 creatinine and D1/P1 sodium higher in diabetics than in nondiabetics in both groups. CONCLUSION Peritoneal accumulation of AGE increased with time on CAPD and number of peritonitis episodes, and was directly related with peritoneal permeability. Peritoneal AGE accumulation and peritoneal permeability in diabetic patients were higher than in nondiabetic patients from the beginning of CAPD.
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Affiliation(s)
- M S Park
- Department of Internal Medicine, School of Medicine, Soon Chun Hyang University, Seoul, Korea.
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Kim YS, Kim SI, Hwang SG, Kim JO, Cho JY, Lee JS, Lee MS, Hwang SD, Shim CS. Diversity of core promoter mutations in immune clearance phase of chronic HBV infection. Eur J Gastroenterol Hepatol 1999; 11:821-5. [PMID: 10514111 DOI: 10.1097/00042737-199908000-00002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND/AIMS Transcription of HBV (hepatitis B virus) pre-core and pre-genomic mRNAs is controlled by core promoter. Therefore, mutations in the core promoter region might change the activity of liver diseases through an altered transcriptional level of the mRNA. The present study was carried out to determine the diversity of HBV core promoter sequences in chronic HBV carriers. METHODS DNA sequences in the core promoter region were determined after cloning the PCR product. Two groups of chronic HBV carriers with HBeAg, including five cases of asymptomatic carriers (ASCs, 21 clones) and eight with chronic hepatitis (CH, 50 clones) were studied. RESULTS Mutations in the core promoter were found in three out of the ASCs (11 clones), and in all eight cases in the CH group (48 clones). While mutations at nucleotide 1762 (A-->T) and 1764(G-->A) were not found in ASC, mutations at the same positions were found in all the cases of CH group (40 clones) (P=0.003). Diverse patterns of mutations in the core promoter were observed in each patient in the CH group. CONCLUSIONS Further studies are needed to determine whether the diversity of HBV core promoter mutations has clinical significance such as the seroconversion of HBeAg to anti-HBe.
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Affiliation(s)
- Y S Kim
- Institute for Digestive Research, Department of Internal Medicine, Soonchunhyang University, Seoul, Korea
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Han KJ, Jung IS, Kim CK, Park SK, Kim DW, Baick SH, Won JH, Hong DS, Hwang SD, Moon C, Park HS. A case of CMV disease of the jejunum in a patient with non-Hodgkin's lymphoma. Korean J Intern Med 1998; 13:143-6. [PMID: 9735673 PMCID: PMC4531948 DOI: 10.3904/kjim.1998.13.2.143] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
CMV infection may occur anywhere in the gastrointestinal tract. Among the small intestine, ileum is the most common site of CMV disease and infection of jejunum is a rare one in patients with CMV gastroenteritis. Although rare, the reason why the recognition of this diagnosis is important is that it cause the lethal hemorrhage and perforation of gastrointestinal tract when its diagnosis and treatment was delayed. Rapid diagnosis are able to using the immunohistochemical stain in shell vial culture of infected specimen or peripheral neutrophils preparation in viremic patients within 8 to 36 hours. The treatment of choice is antiviral agent or surgical resection. We experienced a case of CMV disease of jejunum in patient with non-Hodgkin's lymphoma who showed severe ulceration in jejunum and massive intestinal hemorrhage, and he survived after successful treatment with segmental resection of jejunum and intravenous ganciclovir.
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Affiliation(s)
- K J Han
- Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, Korea
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Woo JH, Kim YS, Hwang SD. Regulation of toxic shock syndrome toxin-1 gene in Staphylococcus aureus. Mol Cells 1997; 7:28-33. [PMID: 9085261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Staphylococcus aureus produces various proteins in response to discrete signals from the external environment like many other pathogenic microorganisms. Certain staphylococcal exoproteins including toxic shock syndrome toxin-1 (TSST-1) are secreted according to the stimuli from the environment, and the quantity synthesized is influenced by a number of different parameters. Using a transposon Tn551-mediated mutagenesis, a mutant (RN 6390) defective in TSST-1 from synthesis was constructed. TSST-1 from wild strain and mutant stain were purified and quantitated from culture supernatants of Staphylococcus aureus. The mutant strain RN 6390 produced only 2% of TSST-1 compared with that produced by the wild strain RN4282. Southern blot hybridization with a tst (TSST-1 gene) probe indicated that the inactivated chromosomal locus is distinct from the tst. These results suggest that transposition by Tn551 inactivated a chromosomal locus whose activity was essential for the expression of the TSST-1 gene.
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Affiliation(s)
- J H Woo
- Department of Internal Medicine, Soon Chun Hyang University, Asan, Korea
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Abstract
The sample of mental patients in sheltered care has a lower arrest rate than the general population in California in all categories of crimes, except for violent crimes. For violent crimes, the sheltered-care population is likely to be arrested at 1.33 times the rate of the state population, even when the heterogeneity of aggravated assault was taken into consideration. This indicates empirically that the mentally ill in sheltered care are more dangerous than the general population. For prediction of criminality, four factors are found to be significant predictors of resident criminality after 1973: (a) prior crime history, (b) age, (c) use of alcohol and drugs, and (d) sex (male). Among these factors, prior crime history is the single most powerful predictor of resident criminal activity. This is another confirmation of most of the previous research findings. Although there have been controversies over the issue of the dangerousness of the mentally ill, the results of this study, overall, support the most recent findings of studies in which the mentally ill population pose greater threats to the community than the general population. Now it is time to consider more specific and practical measures to monitor and carefully follow up the discharged population, especially those with prior crime history, and prevent further violent crimes. This will in turn help to promote the reintegration of the mentally ill in the community.
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Affiliation(s)
- S D Hwang
- College of Social Sciences, Choongjoo, Korea
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Han DC, Kim JH, Cha MK, Song KI, Hwang SD, Lee HB. Effect of HMG CoA reductase inhibition on TGF-beta 1 mRNA expression in diabetic rat glomeruli. Kidney Int Suppl 1995; 51:S61-5. [PMID: 7474692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- D C Han
- Hyonam Kidney Laboratory, Soon Chun Hyang University, Seoul, Korea
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Segal SP, Hwang SD. Licensure of sheltered-care facilities: does it assure quality? Soc Work 1994; 39:124-131. [PMID: 8310318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In California, licensure was intended to assure a minimum level of quality in sheltered-care facilities for the mentally ill population. This longitudinal study relates characteristics of facilities, their residents, and communities to subsequent licensure and considers differences between licensed and unlicensed facilities at follow-up. Initial interviews were completed in 214 facilities in 1973 six months before the implementation of the California Residential Facilities Licensing Act. Follow-up interviews occurred in 1985. Results indicate that although licensure occurred with greater frequency among facilities serving the most disabled population, licensure neither predicts nor has as its apparent consequence the development of higher-quality facilities. An alternative approach to quality assurance is offered.
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Affiliation(s)
- S P Segal
- Mental Health and Social Welfare Research Group, School of Social Welfare, University of California, Berkeley 94720
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