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Xu W, Liu M, Qin Q, Chen J, Mu G, Zhang D, Huang X, Huang Y. Evaluation of protective immune response of immersion inactivated vaccine against Singapore grouper iridovirus. FISH & SHELLFISH IMMUNOLOGY 2024; 153:109855. [PMID: 39181523 DOI: 10.1016/j.fsi.2024.109855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 08/02/2024] [Accepted: 08/21/2024] [Indexed: 08/27/2024]
Abstract
Singapore grouper iridovirus (SGIV) always causes high transmission efficiency and mortality in the larval and juvenile stages of grouper in aquaculture industry. Although inactivated virus and recombinant DNA vaccines administered via intraperitoneal injection have shown efficacy in protection against SGIV, their potential applications in field testing were limited due to the vaccine delivery methods. Here, we developed an immersion vaccine containing inactivated virus and Montanide IMS 1312 adjuvant (IMS 1312) and evaluated its protective efficacy against SGIV infection. Compared to the PBS group, fish vaccinated with immersion inactivated vaccine with or without IMS 1312 were significantly protected against SGIV, with a relative percent survival (RPS) of 57.69 % and 38.47 %, respectively. Furthermore, the transcripts of viral core genes were reduced, and the histopathological severity caused by SGIV were relatively mild in multiple tissues of the IMS + V group. The immersion vaccine activated the AKP and ACP activities and increased the mRNA levels of IFN and inflammation-associated genes. The transcriptome analysis showed that a total of 731 and 492 genes were significantly regulated in the spleen and kidney from the IMS + V group compared to the PBS group, respectively. Among them, 129 DEGs were co-regulated, and enriched in the KEGG pathways related to immune and cell proliferation, including MAPK signaling, JAK-STAT signaling and PI3K-Akt signaling pathways. Similarly, the DEGs specially regulated in the kidney and spleen upon vaccine immunization were significantly enriched in the KEGG pathways related to interferon and inflammation response. Together, our results elucidated that the immersion vaccine of inactivated SGIV with IMS 1312 induced a protective immune response of grouper against SGIV.
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Affiliation(s)
- Weihua Xu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Mengke Liu
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China
| | - Qiwei Qin
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, 511464, China; Southern Marine Science and Engineering Guangdong Laboratory, Zhuhai, 519082, China
| | - Jian Chen
- Guangdong Winsun Bio-Pharmaceutical Co., Ltd., Guangzhou, 511356, China
| | - Guanghui Mu
- Guangdong Winsun Bio-Pharmaceutical Co., Ltd., Guangzhou, 511356, China
| | - Dongzhuo Zhang
- Guangdong Winsun Bio-Pharmaceutical Co., Ltd., Guangzhou, 511356, China
| | - Xiaohong Huang
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, 511464, China.
| | - Youhua Huang
- Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, 511464, China.
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Leiva-Rebollo R, Labella AM, Gémez-Mata J, Castro D, Borrego JJ. Fish Iridoviridae: infection, vaccination and immune response. Vet Res 2024; 55:88. [PMID: 39010235 PMCID: PMC11247874 DOI: 10.1186/s13567-024-01347-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Accepted: 05/31/2024] [Indexed: 07/17/2024] Open
Abstract
Each year, due to climate change, an increasing number of new pathogens are being discovered and studied, leading to an increase in the number of known diseases affecting various fish species in different regions of the world. Viruses from the family Iridoviridae, which consist of the genera Megalocytivirus, Lymphocystivirus, and Ranavirus, cause epizootic outbreaks in farmed and wild, marine, and freshwater fish species (including ornamental fish). Diseases caused by fish viruses of the family Iridoviridae have a significant economic impact, especially in the aquaculture sector. Consequently, vaccines have been developed in recent decades, and their administration methods have improved. To date, various types of vaccines are available to control and prevent Iridoviridae infections in fish populations. Notably, two vaccines, specifically targeting Red Sea bream iridoviral disease and iridoviruses (formalin-killed vaccine and AQUAVAC® IridoV, respectively), are commercially available. In addition to exploring these themes, this review examines the immune responses in fish following viral infections or vaccination procedures. In general, the evasion mechanisms observed in iridovirus infections are characterised by a systemic absence of inflammatory responses and a reduction in the expression of genes associated with the adaptive immune response. Finally, this review also explores prophylactic procedure trends in fish vaccination strategies, focusing on future advances in the field.
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Affiliation(s)
- Rocío Leiva-Rebollo
- Departamento de Microbiología, Universidad de Málaga, Málaga, Spain
- Department of Microbiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Global Health and Emerging Pathogens Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | | | - Juan Gémez-Mata
- Departamento de Microbiología, Universidad de Málaga, Málaga, Spain
| | - Dolores Castro
- Departamento de Microbiología, Universidad de Málaga, Málaga, Spain
| | - Juan J Borrego
- Departamento de Microbiología, Universidad de Málaga, Málaga, Spain.
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3
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Xu S, Wang Y, Wang Y, Jiang Y, Li H, Han C, Wei B, Qin Q, Wei S. Development and immune evaluation of LAMP1 chimeric DNA vaccine against Singapore grouper iridovirus in orange-spotted grouper, Epinephelus coioides. FISH & SHELLFISH IMMUNOLOGY 2024; 144:109218. [PMID: 37977543 DOI: 10.1016/j.fsi.2023.109218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 10/24/2023] [Accepted: 11/06/2023] [Indexed: 11/19/2023]
Abstract
Grouper is one of the most important and valuable mariculture fish in China, with a high economic value. As the production of grouper has increased, massive outbreaks of epidemic diseases have limited the development of the industry. Singapore grouper iridovirus (SGIV) is one of the most serious infectious viral pathogens and has caused huge economic losses to grouper farming worldwide due to its rapid spread and high lethality. To find new strategies for the effective prevention and control of SGIV, we constructed two chimeric DNA vaccines using Lysosome-associated membrane protein 1 (LAMP1) fused with major capsid proteins (MCP) against SGIV. In addition, we evaluated the immune protective effects of vaccines including pcDNA3.1-3HA, pcDNA3.1-MCP, pcDNA3.1-LAMP1, chimeric DNA vaccine pcDNA3.1-MLAMP and pcDNA3.1-LAMCP by intramuscular injection. Our results showed that compared with groups injected with PBS, pcDNA3.1-3HA, pcDNA3.1-LAMP1 or pcDNA3.1-MCP, the antibody titer significantly increased in the chimeric vaccine groups. Moreover, the mRNA levels of immune-related factors in groupers, including IRF3, MHC-I, TNF-α, and CD8, showed the same trend. However, MHC-II and CD4 were significantly increased only in the chimeric vaccine groups. After 28 days of vaccination, groupers were challenged with SGIV, and mortality was documented for each group within 14 days. The data showed that two chimeric DNA vaccines provided 87 % and 91 % immune protection for groupers which were significantly higher than the 52 % protection rate of pcDNA3.1-MCP group, indicating that both forms of LAMP1 chimeric vaccines possessed higher immune protection against SGIV, providing the theoretical foundation for the creation of novel DNA vaccines for fish.
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Affiliation(s)
- SuiFeng Xu
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - YueXuan Wang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - YeWen Wang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - YunXiang Jiang
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Huang Li
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - ChengZong Han
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - BaoCan Wei
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, 511457, China.
| | - Shina Wei
- College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Nansha-South China Agricultural University Fishery Research Institute, Guangzhou, 511457, China.
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Kuang J, Liu M, Yu Q, Cheng Y, Huang J, Han S, Shi J, Huang L, Li P. Antiviral Effect and Mechanism of Edaravone against Grouper Iridovirus Infection. Viruses 2023; 15:2237. [PMID: 38005914 PMCID: PMC10674758 DOI: 10.3390/v15112237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/01/2023] [Accepted: 11/04/2023] [Indexed: 11/26/2023] Open
Abstract
Singapore grouper iridovirus (SGIV) is a virus with high fatality rate in the grouper culture industry. The outbreak of SGIV is often accompanied by a large number of grouper deaths, which has a great impact on the economy. Therefore, it is of great significance to find effective drugs against SGIV. It has been reported that edaravone is a broad-spectrum antiviral drug, most widely used clinically in recent years, but no report has been found exploring the effect of edaravone on SGIV infections. In this study, we evaluated the antiviral effect of edaravone against SGIV, and the anti-SGIV mechanism of edaravone was also explored. It was found that the safe concentration of edaravone on grouper spleen (GS) cells was 50 µg/mL, and it possessed antiviral activity against SGIV infection in a dose-dependent manner. Furthermore, edaravone could significantly disrupt SGIV particles and interference with SGIV binding to host cells, as well as SGIV replication in host cells. However, edaravone was not effective during the SGIV invasion into host cells. This study was the first time that it was determined that edaravone could exert antiviral effects in response to SGIV infection by directly interfering with the processes of SGIV infecting cells, aiming to provide a theoretical basis for the control of grouper virus disease.
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Affiliation(s)
- Jihui Kuang
- School of Resources, Environment and Materials, Guangxi University, Nanning 537100, China;
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
| | - Mingzhu Liu
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning 530022, China
| | - Qing Yu
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning 530022, China
| | - Yuan Cheng
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning 530022, China
| | - Jing Huang
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning 530022, China
| | - Shuyu Han
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
- Guangxi Fisheries Technology Extension Station, Nanning 530022, China
| | - Jingu Shi
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
- Guangxi Fisheries Technology Extension Station, Nanning 530022, China
| | - Lin Huang
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning 530022, China
| | - Pengfei Li
- School of Resources, Environment and Materials, Guangxi University, Nanning 537100, China;
- Guangxi Key Laboratory of Aquatic Biotechnology and Modern Ecological Aquaculture, Guangxi Engineering Research Center for Fishery Major Diseases Control and Efficient Healthy Breeding Industrial Technology (GERCFT), Guangxi Academy of Marine Sciences, Guangxi Academy of Sciences, Nanning 530022, China; (M.L.); (Q.Y.); (Y.C.); (J.H.); (S.H.); (J.S.)
- China-ASEAN Modern Fishery Industry Technology Transfer Demonstration Center, Beibu Gulf Marine Industrial Research Institute, Guangxi Academy of Marine Sciences, Nanning 530022, China
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Qin P, Munang'andu HM, Xu C, Xie J. Megalocytivirus and Other Members of the Family Iridoviridae in Finfish: A Review of the Etiology, Epidemiology, Diagnosis, Prevention and Control. Viruses 2023; 15:1359. [PMID: 37376659 DOI: 10.3390/v15061359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Revised: 06/06/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023] Open
Abstract
Aquaculture has expanded to become the fastest growing food-producing sector in the world. However, its expansion has come under threat due to an increase in diseases caused by pathogens such as iridoviruses commonly found in aquatic environments used for fish farming. Of the seven members belonging to the family Iridoviridae, the three genera causing diseases in fish comprise ranaviruses, lymphocystiviruses and megalocytiviruses. These three genera are serious impediments to the expansion of global aquaculture because of their tropism for a wide range of farmed-fish species in which they cause high mortality. As economic losses caused by these iridoviruses in aquaculture continue to rise, the urgent need for effective control strategies increases. As a consequence, these viruses have attracted a lot of research interest in recent years. The functional role of some of the genes that form the structure of iridoviruses has not been elucidated. There is a lack of information on the predisposing factors leading to iridovirus infections in fish, an absence of information on the risk factors leading to disease outbreaks, and a lack of data on the chemical and physical properties of iridoviruses needed for the implementation of biosecurity control measures. Thus, the synopsis put forth herein provides an update of knowledge gathered from studies carried out so far aimed at addressing the aforesaid informational gaps. In summary, this review provides an update on the etiology of different iridoviruses infecting finfish and epidemiological factors leading to the occurrence of disease outbreaks. In addition, the review provides an update on the cell lines developed for virus isolation and culture, the diagnostic tools used for virus detection and characterization, the current advances in vaccine development and the use of biosecurity in the control of iridoviruses in aquaculture. Overall, we envision that the information put forth in this review will contribute to developing effective control strategies against iridovirus infections in aquaculture.
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Affiliation(s)
- Pan Qin
- Key Laboratory of Marine Biotechnology of Fujian Province, College of Marine Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | | | - Cheng Xu
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 1433 Ås, Norway
| | - Jianjun Xie
- Key Laboratory of Mariculture and Enhancement of Zhejiang Province, Marine Fisheries Research Institute of Zhejiang, Zhoushan 316100, China
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Liang X, Liang J, Cao J, Liu S, Wang Q, Ning Y, Liang Z, Zheng J, Zhang Z, Luo J, Chen Y, Huang X, Huang Y, Qin Q, Zhou S. Oral immunizations with Bacillus subtilis spores displaying VP19 protein provide protection against Singapore grouper iridovirus (SGIV) infection in grouper. FISH & SHELLFISH IMMUNOLOGY 2023:108860. [PMID: 37257567 DOI: 10.1016/j.fsi.2023.108860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2023] [Revised: 05/28/2023] [Accepted: 05/29/2023] [Indexed: 06/02/2023]
Abstract
Disease caused by Singapore grouper iridovirus (SGIV) results in major economic losses in the global grouper aquaculture industry. Vaccination is considered to be the most effective way to protect grouper from SGIV. In this study, the spores of Bacillus subtilis (B.subtilis) WB600 were utilized as the vehicle that the VP19 protein was displayed on the spores surface. To further investigate the effect of oral vaccination, the grouper were orally immunized with B.s-CotC-19 spores. After challenged, the survival rate of grouper orally vaccinated with B.s-CotC-19 spores was 34.5% and the relative percent survival (RPS) was 28.7% compared to the PBS group. Moreover, the viral load in the tissues of the B.s-CotC-19 group was significantly lower than that of the PBS group. The histopathological sections of head kidney and liver tissue from the B.s-CotC-19 group showed significantly less histopathology compared to the PBS group. In addition, the specific IgM levels in serum in the B.s-CotC-19 group was higher than those in the PBS group. In the hindgut tissue, the immune-related gene expression detected by quantitative real-time PCR (qRT-PCR) exhibited an increasing trend in different degrees in the B.s-CotC-19 group, suggesting that the innate and adaptive immune responses were activated. These results indicated that the oral administration of recombinant B.subtilis spores was effective for preventing SGIV infection. This study provided a feasible strategy for the controlling of fish virus diseases.
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Affiliation(s)
- Xia Liang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Junjia Liang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Jinqiao Cao
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Shijia Liu
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Quan Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Yunshang Ning
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Zengjian Liang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Jiaying Zheng
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Zemiao Zhang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Jiayi Luo
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Yingjing Chen
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaohong Huang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266000, China
| | - Yan Huang
- ZhongShan School of Medicine, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266000, China.
| | - Sheng Zhou
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China; College of Marine Sciences, South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao, 266000, China.
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7
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Molecular characterization, expression patterns, and subcellular localization of a classical and a novel nonclassical MHC class I α molecules from Japanese eel Anguilla japonica. AQUACULTURE AND FISHERIES 2023. [DOI: 10.1016/j.aaf.2021.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Huo X, Yan Y, Chang J, Su J. Astragalus polysaccharide or β-glucan combined with inactivated vaccine markedly prevent CyHV-2 infection in Carassius auratus gibelio. AQUACULTURE AND FISHERIES 2023. [DOI: 10.1016/j.aaf.2022.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Yao JY, Zhang CS, Yuan XM, Huang L, Hu DY, Yu Z, Yin WL, Lin LY, Pan XY, Yang GL, Wang CF, Shen JY, Zhang HQ. Oral Vaccination With Recombinant Pichia pastoris Expressing Iridovirus Major Capsid Protein Elicits Protective Immunity in Largemouth Bass (Micropterus salmoides). Front Immunol 2022; 13:852300. [PMID: 35309312 PMCID: PMC8931665 DOI: 10.3389/fimmu.2022.852300] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
Largemouth bass iridovirus (LMBV) can cause high mortality and lead to heavy economic loss in the cultivation of largemouth bass, but there was no effective treatment. Here, the present study constructed a recombinant Pichia pastoris expressing LMBV major capsid protein (MCPD). The recombinant GS115-pW317-MCPD was then used to immunize largemouth bass via oral administration, and mucosal immune response mediated by immunoglobulins (Igs) was measured after oral immunization. Serum antibody levels were measured by ELISA, neutralizing antibody titers were determined by serum neutralization test (SNT), antigen presentation-related gene expressions were detected by RT-PCR, and the histopathological characteristics of immunized fish were assessed after challenging with 0.1 ml 107.19 TCID50/ml LMBV. The relative percentage survival (RPS) was also determined. Our results showed that the serum antibody titers of immunized fish were significantly higher than that of control groups (P < 0.05). IgT and IgM expressions in gut were increased significantly after vaccination with GS115-pW317-MCPD; however, much stronger response in gut was observed as compared with gill. The expression levels of major histocompatibility complex (MHC) II, CD8, and T-cell receptor (TCR) were significantly elevated in GS115-pW317-MCPD group (P < 0.05), while CD4 and MHC I transcription levels remained unchanged after oral immunization (P > 0.05). The RPS of fish orally immunized with 1.0 × 108 CFU/g GS115-pW317-MCPD was reached up to 41.6% after challenge with 0.1 ml 109.46 TCID50/ml LMBV. Moreover, orally immunizing with GS115-pW317-MCPD can relieve the pathological damage caused by LMBV. Therefore, GS115-pW317-MCPD showed a promising potential against LMBV.
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Affiliation(s)
- Jia-Yun Yao
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
- *Correspondence: Jia-Yun Yao, ; Hai-Qi Zhang, ; Chun-Feng Wang,
| | - Cheng-Sai Zhang
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Xue-Mei Yuan
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Lei Huang
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Da-Yan Hu
- Development Center of Huzhou Agricultural Science and Technology, Huzhou, China
| | - Zhe Yu
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Wen-Lin Yin
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Ling-Yun Lin
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Xiao-Yi Pan
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Gui-lian Yang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Chun-Feng Wang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
- *Correspondence: Jia-Yun Yao, ; Hai-Qi Zhang, ; Chun-Feng Wang,
| | - Jin-Yu Shen
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
| | - Hai-Qi Zhang
- Agriculture Ministry Key Laboratory of Healthy Freshwater Aquaculture, Key Laboratory of Fish Health and Nutrition of Zhejiang Province, Zhejiang Institute of Freshwater Fisheries, Huzhou, China
- *Correspondence: Jia-Yun Yao, ; Hai-Qi Zhang, ; Chun-Feng Wang,
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Abdul NA, Seepoo AM, Gani T, Sugumar V, Selvam S, Allahbagash B, Abdul Kuthoos AN, Palsamy RK, Kishore M P, M Rajwade J, Azeez SSH. Development and characterization of five novel cell lines from snubnose pompano, Trachinotus blochii (Lacepede, 1801), and their application in gene expression and virological studies. JOURNAL OF FISH DISEASES 2022; 45:121-139. [PMID: 34609743 DOI: 10.1111/jfd.13542] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Five novel permanent cell lines have been established from gill, heart, kidney, eye and fin of snubnose pompano, Trachinotus blochii. They were designated as snubnose pompano gill (SPG), snubnose pompano heart (SPH), snubnose pompano kidney (SPK), snubnose pompano eye (SPE) and snubnose pompano fin (SPF), respectively. All these cell lines were characterized and cryopreserved successfully at different passage levels. Cell lines were passaged every alternate day; SPG, SPH, SPK, SPE and SPF cell lines attained passage levels of 68, 74, 82, 79 and 106, respectively, since the initiation of their development in 2019. The cell lines grew well in Leibovitz's 15 medium containing 15% foetal bovine serum at 28°C. Immunophenotyping of the cell lines revealed the presence of fibronectin and pancytokeratin. No mycoplasma contamination was found. The transfection study revealed the gene expression efficiency of these cell lines by expressing the green fluorescent protein (GFP). The authentication on origin of cell lines from T. blochii was confirmed by amplification of species-specific mitochondrial cytochrome oxidase I gene. The results showed the susceptibility of these cell lines to fish nodavirus (FNV) and tilapia lake virus (TiLV) and resistance to cyprinid herpesvirus 2 (CyHV-2). The FNV infection in the cell lines was confirmed by RT-PCR, Western blot, ELISA and immunocytochemistry, while TiLV infection was confirmed by RT-PCR assay. These results revealed that these cell lines are suitable for virological and foreign gene expression studies.
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Affiliation(s)
- Nafeez Ahmed Abdul
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College (Affiliated Thiruvalluvar University), Melvisharam, India
| | - Abdul Majeed Seepoo
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College (Affiliated Thiruvalluvar University), Melvisharam, India
| | - Taju Gani
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College (Affiliated Thiruvalluvar University), Melvisharam, India
| | - Vimal Sugumar
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College (Affiliated Thiruvalluvar University), Melvisharam, India
| | - Suryakodi Selvam
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College (Affiliated Thiruvalluvar University), Melvisharam, India
| | - Badhusha Allahbagash
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College (Affiliated Thiruvalluvar University), Melvisharam, India
| | | | - Ramesh Kumar Palsamy
- Mandapam Regional Centre, Central Marine Fisheries Research Institute, Mandapam, India
| | | | | | - Sait Sahul Hameed Azeez
- Aquatic Animal Health Laboratory, C. Abdul Hakeem College (Affiliated Thiruvalluvar University), Melvisharam, India
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11
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Kwon WJ, Choi JC, Hong S, Kim YC, Jeong MG, Min JG, Jeong JB, Kim KI, Jeong HD. Development of a high-dose vaccine formulation for prevention of megalocytivirus infection in rock bream (Oplegnathus fasciatus). Vaccine 2020; 38:8107-8115. [PMID: 33189430 DOI: 10.1016/j.vaccine.2020.11.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/30/2020] [Accepted: 11/01/2020] [Indexed: 01/09/2023]
Abstract
A formalin-inactivated red sea bream iridovirus (RSIV) vaccine was prepared using the culture supernatant of a persistently infected Pagrus major fin cell line (PI-PMF) with IVS-1 strain (RSIV subtype II Meglaocytivirus). Rock bream (Oplegnathus fasciatus) were injected with a high-dose, ultracentrifuged megalocytivirus vaccine (Ultra HSCMV, 7.0 × 1010 copies/mL), a high-dose supernatant of cultured megalocytivirus vaccine (HSCMV, 1.0 × 1010 copies/mL), a supernatant of cultured megalocytivirus vaccine (SCMV, 1.0 × 109 copies/mL), and a low-dose of cultured megalocytivirus vaccine (LSCMV, 1.0 × 108 copies/mL). The vaccine efficacies for the various vaccine formulations were determined done following injection challenge with IVS-1 (1.0 × 104 copies/0.1 mL/fish), and the four different vaccines exhibited cumulative mortalities of 10.0 ± 0.0%, 48.3 ± 7.6%, 75.0 ± 5.0%, and 100.0 ± 0.0%, respectively. Additionally, the dose-dependent vaccine efficacy was also confirmed using two different cohabitation methods that included challenges G (general) and I (individual). When squalene + aluminum hydroxide (SqAl) was used as an adjuvant for the HSCMV or SCMV vaccine, cumulative mortalities of 30.0 ± 5.0% and 48.3 ± 7.6%, respectively, were obtained; moreover, these two adjuvants exhibited the highest efficacy in this study. The observed difference in survival post-challenge for the different vaccine concentrations was not reflected in the differences in neutralizing antibody titers. It was found that the water temperature during immune induction plays a less important a role than the water temperature during the challenge test, in which lowering the water temperature from 25 °C to 21 °C during a challenge improved the level of protection from cumulative mortalities from 35% to 10%. This study demonstrated that protection against mortality using inactivated vaccines against RSIVD in rock bream, which are known to be the most susceptible species to RSIV infection, is dependent upon antigen dose and temperature during the challenge.
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Affiliation(s)
- Woo Ju Kwon
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea
| | - Jae Chan Choi
- Gyeongsangbuk-do Fisheries Technology Center, Pohang, 37556, Republic of Korea
| | - Suhee Hong
- Department of Marine Biotechnology, Gangneung-Wonju National University, Gangneung 25457, Republic of Korea
| | - Young Chul Kim
- National Fishery Products Quality Management Service, Busan 49111, Republic of Korea
| | - Min Gyeong Jeong
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea
| | - Joon Gyu Min
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea
| | - Joon Bum Jeong
- Department of Aquatic Biomedical Science, Jeju National University, Jeju 63243, Republic of Korea
| | - Kwang Il Kim
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea.
| | - Hyun Do Jeong
- Department of Aquatic Life Medicine, Pukyong National University, Busan 48513, Republic of Korea
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12
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Yu X, Li R, He L, Ding X, Liang Y, Peng W, Shi H, Lin H, Zhang Y, Lu D. MicroRNA-29b modulates the innate immune response by suppressing IFNγs production in orange-spotted grouper (Epinephelus coioides). FISH & SHELLFISH IMMUNOLOGY 2020; 104:537-544. [PMID: 32470508 DOI: 10.1016/j.fsi.2020.05.057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 05/06/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Interferon-γ (IFNγ), a type II interferon, is essential to host resistance against various infections. Unlike other vertebrates, fish have two types of IFNγs, IFNγ1 (also named IFNγ-rel) and IFNγ2. MicroRNAs (miRNAs) regulate multiple biological processes by suppressing mRNA translation or inducing mRNA degradation. Among them, miR-29 can directly target IFNγ and affact innate and adaptive immune responses in mice. There are five members of the miR-29 family in orange-spotted grouper (Epinephelus coioides), which share the same miRNA seed region. However, whether miR-29 directly targets E. coioides IFNγs and regulate IFNγ production is still unknown. In the present study, the negative correlation between miR-29b and both IFNγs in immune tissues of healthy E. coioides and grouper spleen cells (GS cells) stimulated with LPS or poly I:C was demonstrated. Moreover, dual-luciferase reporter assays and western blotting were performed to demonstrate that miR-29b suppressed E. coioides IFNγ production. Studies of NO production in GS cells after miR-29b transfection revealed that miR-29b overexpression affected NO production through the downregulation of IFNγ expression. Taken together, our results suggest that miR-29b may directly target E. coioides IFNγs and modulate IFNγ-mediated innate immune responses by suppressing E. coioides IFNγs production.
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Affiliation(s)
- Xue Yu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China
| | - Ruozhu Li
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China
| | - Liangge He
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China
| | - Xu Ding
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China
| | - Yaosi Liang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China
| | - Wan Peng
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China; State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-Sen University, Guangzhou, 510275, PR China
| | - Herong Shi
- Marine Fisheries Development Center of Guangdong Province, Huizhou, 516081, PR China
| | - Haoran Lin
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, PR China; College of Ocean, Hainan University, Haikou, 570228, PR China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, PR China.
| | - Danqi Lu
- State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory for Aquatic Economic Animals and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, 510275, Guangzhou, PR China.
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13
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Somamoto T, Nakanishi T. Mucosal delivery of fish vaccines: Local and systemic immunity following mucosal immunisations. FISH & SHELLFISH IMMUNOLOGY 2020; 99:199-207. [PMID: 31911291 DOI: 10.1016/j.fsi.2020.01.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 12/09/2019] [Accepted: 01/02/2020] [Indexed: 05/20/2023]
Abstract
The mucosal organs of fishes are directly exposed to their aquatic environment, which is suited to the colonization and growth of microorganisms, and thus these barriers are considered to play an important role in maintaining homeostasis and preventing entry of invasive pathogens. Research on fish mucosal immunity have shown that mucosal organs such as gills, skin, intestines and olfactory organs harbor lymphoid cells, including T and B cells as well as dendritic-like cells. Findings related to immune responses following direct administration of antigens into the mucosal organs could help to shed light upon the development of fish mucosal vaccines. The present review highlights vaccine delivery via mucosal organs, in particular focusing on methods other than those of typical mucosal vaccine platforms, such as oral and immersion vaccines. In addition, we propose the hypothesis that mucosal tissues are important sites for generating cell-mediated immunity following vaccination with extracellular antigens.
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Affiliation(s)
- Tomonori Somamoto
- Laboratory of Marine Biochemistry, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Kyushu University, Motooka 744, Fukuoka, 819-0395, Japan.
| | - Teruyuki Nakanishi
- Goto Aquaculture Institute Co., Ltd, Sayama City, Saitama, 350-1332, Japan
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14
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Guo X, Zhou Y, Fu X, Lin Q, Liu L, Liang H, Niu Y, Li N. Transcriptomic profiles reveal that inactivated iridovirus and rhabdovirus bivalent vaccine elicits robust adaptive immune responses against lethal challenge in marbled sleepy goby. FISH & SHELLFISH IMMUNOLOGY 2020; 98:429-437. [PMID: 31988017 DOI: 10.1016/j.fsi.2020.01.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/07/2020] [Accepted: 01/23/2020] [Indexed: 06/10/2023]
Abstract
Oxyeleotris marmoratus iridovirus (OMIV) and Oxyeleotris marmoratus rhabdovirus (OMRV) are the two major causative agents of disease leading to massive mortality and severe economic losses in marbled sleepy goby (Oxyeleotris marmoratus) industry. It's urgent to develop an effective vaccine against these fatal diseases. In this study, we developed bivalent inactivated vaccine against OMIV and OMRV and evaluated its protective effect in Oxyeleotris marmoratus. The intraperitoneally vaccinated fish were protected against challenge with OMIV and OMRV with both relative percent survival (RPS) of 100%. In addition, deep RNA sequencing was used to analyze the transcriptomic profiles of the spleen tissues at progressive time points post-vaccination with bivalent inactivated vaccine and challenge with OMIV and OMRV infection. Results showed that adaptive immune response was induced in Oxyeleotris marmoratus injected with bivalent inactivated vaccine. Furthermore, robust adaptive immune responses were also detected in vaccinated fish at 7 d and 2 d post-challenge with OMIV and OMRV. Taken together, these results indicated that bivalent inactivated vaccine activated adaptive immune responses in Oxyeleotris marmoratus, and provided protection against OMIV and OMRV lethal challenge.
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Affiliation(s)
- Xixi Guo
- Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou, 510380, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Yang Zhou
- Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou, 510380, China; College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China
| | - Xiaozhe Fu
- Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou, 510380, China
| | - Qiang Lin
- Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou, 510380, China
| | - Lihui Liu
- Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou, 510380, China
| | - Hongru Liang
- Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou, 510380, China
| | - Yinjie Niu
- Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou, 510380, China
| | - Ningqiu Li
- Pearl River Fishery Research Institute, Chinese Academy of Fishery Sciences, Key Laboratory of Fishery Drug Development, Ministry of Agriculture, Key Laboratory of Aquatic Animal Immune Technology, Guangzhou, 510380, China.
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15
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Xiao H, Liu M, Li S, Shi D, Zhu D, Ke K, Xu Y, Dong D, Zhu L, Yu Q, Li P. Isolation and Characterization of a Ranavirus Associated with Disease Outbreaks in Cultured Hybrid Grouper (♀ Tiger Grouper Epinephelus fuscoguttatus × ♂ Giant Grouper E. lanceolatus) in Guangxi, China. JOURNAL OF AQUATIC ANIMAL HEALTH 2019; 31:364-370. [PMID: 31519049 DOI: 10.1002/aah.10090] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
An outbreak of suspected iridovirus disease in cultured hybrid grouper (♀Tiger Grouper Epinephelus fuscoguttatus × ♂ Giant Grouper Epinephelus lanceolatus) occurred in the Guangxi Province in July, 2018. In this study, grouper iridovirus Guangxi (SGIV-Gx) was isolated from diseased hybrid grouper that were collected from Guangxi. Cytopathic effects were observed and identified in grouper spleen cells that were incubated with diseased tissue homogenates after 24 h, and the effects increased at 48 h postinfection. The transmission electron microscopy results showed that viral particles that were about 200 nm in diameter with hexagonal profiles were present in the cell cytoplasm of suspected virus-infected cells. The presence of SGIV-Gx (accession number: MK107821) was identified by polymerase chain reaction (PCR) and amplicon sequencing, which showed that this strain was most closely related to Singapore grouper iridovirus (AY521625.1). The detection of SGIV-Gx infection was further supported by novel aptamer (Q2c)-based detection technology. The effects of temperature and pH on viral infectivity were analyzed by using reverse transcription quantitative real-time polymerase chain reaction (RT-qPCR) and cell culture. The results indicated that SGIV-Gx was resistant to exposure to pH levels 5, 7, and 7.5 for 1 h, but its infectivity was remarkably lower at pH levels 3 and 10 after 1 h. The analyses showed that SGIV-Gx was stable for 1 h at 4°C and 25°C but was inactivated after 1 h at 40, 50, and 60°C.
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Affiliation(s)
- Hehe Xiao
- College of Life Science, Henan Normal University, Xinxiang, China
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Mingzhu Liu
- Guangxi Key Laboratory for Marine Biotechnology, Guangxi Institute of Oceanography, Guangxi Academy of Sciences, Beihai, China
- Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, College of Marine Sciences, Beibu Gulf University, Qinzhou, China
| | - Siqiao Li
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Deqiang Shi
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Donglin Zhu
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Ke Ke
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Youhou Xu
- Guangxi Key Laboratory of Beibu Gulf Marine Biodiversity Conservation, College of Marine Sciences, Beibu Gulf University, Qinzhou, China
| | - Dexin Dong
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Libo Zhu
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Qing Yu
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Pengfei Li
- Guangxi Key Laboratory for Marine Biotechnology, Guangxi Institute of Oceanography, Guangxi Academy of Sciences, Beihai, China
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16
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Wang B, Du HH, Huang HQ, Xian JA, Xia ZH, Hu YH. Major histocompatibility complex class I (MHC Iα) of Japanese flounder (Paralichthys olivaceus) plays a critical role in defense against intracellular pathogen infection. FISH & SHELLFISH IMMUNOLOGY 2019; 94:122-131. [PMID: 31491527 DOI: 10.1016/j.fsi.2019.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 08/11/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
The major histocompatibility complex (MHC) is a highly polymorphic region of the vertebrate genome that plays a critical role in initiating immune responses towards invading pathogens. It is well known that MHC I molecules play a central role in the immune response to viruses. However, rare literatures were reported the role of MHC I in the resistance to intracellular bacteria. Sequences of MHC Iα were identified in multiple teleost species, including Japanese flounder (Paralichthys olivaceus), however, the immunological function of MHC Iα remain largely unknown. In this study, we examined the expression profile and biological activity of an MHC Iα homologue, PoMHC Iα, from P. olivaceus. Structural analysis showed that PoMHC Iα possesses conserved structural characteristics of MHC Iα proteins, including MHC_I domain, IGc1 domain, transmembrane region. Expression of PoMHC Iα was upregulated in a time-dependent manner by extracellular and intracellular bacterial pathogens and viral pathogen infection. Different expression patterns were exhibited in response to the infection of different types of microbial pathogens in different immune tissues. Recombinant PoMHC Iα increased the capability of host cells to defense against intracellular pathogen Edwardsiella tarda infection and enhanced the expression of immune related genes. The knockdown of PoMHC Iα attenuated the ability of cells to eliminate E. tarda, which was sustained by the in vivo results that overexpression of PoMHC Iα promoted the host defense against invading E. tarda. Antigen uptake assay indicated PoMHC Iα participated in cells antigen presentation. Collectively, this study is the first report that MHC Iα plays an important role in immune defense against intracellular bacterial pathogen in teleost. Taken together, these findings add new insights into the biological function of teleost MHC Iα and emphasize the importance of MHC I gene products for the control of E. tarda infection.
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Affiliation(s)
- Bo Wang
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China; Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - He-He Du
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Haikou, 571101, China
| | - Hui-Qin Huang
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Haikou, 571101, China
| | - Jian-An Xian
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Haikou, 571101, China
| | - Zhi-Hui Xia
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresources, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Yong-Hua Hu
- Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China; Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology, Qingdao, China; Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Haikou, 571101, China.
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17
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Yu Q, Liu M, Xiao H, Wu S, Qin X, Lu Z, Shi D, Li S, Mi H, Wang Y, Su H, Wang T, Li P. The inhibitory activities and antiviral mechanism of Viola philippica aqueous extracts against grouper iridovirus infection in vitro and in vivo. JOURNAL OF FISH DISEASES 2019; 42:859-868. [PMID: 30893481 DOI: 10.1111/jfd.12987] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2018] [Revised: 02/14/2019] [Accepted: 02/15/2019] [Indexed: 06/09/2023]
Abstract
Grouper iridovirus (GIV) is one of the most serious pathogens in mariculture and causes high mortality rates in cultured groupers; then, effective medicines for controlling GIV infections are urgently needed. Viola philippica is a well-known medicinal plant, and the application of V. philippica aqueous extracts against GIV infection was assessed by different methods in this study. The results showed that the working concentration of V. philippica aqueous extracts was 10 mg/ml. V. philippica aqueous extracts below 10 mg/ml have no significant cytotoxic effects on cell viability, while extracts over 15 mg/ml decreased cell viability and showed cytotoxic activity. V. philippica aqueous extracts had excellent inhibitory effects against GIV infection in vitro and in vivo. The possible antiviral mechanism of V. philippica was further analysed, which indicated that V. philippica did no damages to GIV particles, but it could disturb GIV binding, entry and replication in host cells. V. philippica had the best inhibitory effects against GIV during viral infection stage of binding and replication in host cells. Overall, the results suggest that appropriate concentration of V. philippica aqueous extracts has great antiviral effects, making it an interesting candidate for developing effective medicines for preventing and controlling GIV infection in farmed groupers.
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Affiliation(s)
- Qing Yu
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Mingzhu Liu
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Hehe Xiao
- College of Life Science, Henan Normal University, Xinxiang, China
| | - Siting Wu
- Guangxi Key Lab for Marine Biotechnology, Guangxi Institute of Oceanography, Guangxi Academy of Sciences, Beihai, China
| | - Xianling Qin
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Zijun Lu
- School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, China
| | - Deqiang Shi
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
| | - Siqiao Li
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Huizhi Mi
- Guangxi Key Laboratory of Marine Natural Products and Combinatorial Biosynthesis Chemistry, Guangxi Academy of Sciences, Nanning, China
| | - Yibing Wang
- School of Marine Sciences and Biotechnology, Guangxi University for Nationalities, Nanning, China
| | - Hongfei Su
- Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, College of Marine Sciences, Guangxi University, Nanning, China
| | - Taixia Wang
- College of Life Science, Henan Normal University, Xinxiang, China
| | - Pengfei Li
- Guangxi Key Laboratory of Marine Environmental Science, Guangxi Academy of Sciences, Nanning, China
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18
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Shih TC, Ho LP, Wu JL, Chou HY, Pai TW. A voting mechanism-based linear epitope prediction system for the host-specific Iridoviridae family. BMC Bioinformatics 2019; 20:192. [PMID: 31074372 PMCID: PMC6509842 DOI: 10.1186/s12859-019-2736-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Background The Iridoviridae family is categorized into five genera and clustered into two subfamilies: Alphairidovirinae includes Lymphocystivirus, Ranavirus (GIV), and Megalocystivirus (TGIV), which infect vertebrate hosts and Betairidovirinae includes Iridovirus and Chloriridovirus, which infect invertebrate hosts. Clustered Iridoviridae subfamilies possess host-specific characteristics, which can be considered as exclusive features for in-silico prediction of effective epitopes for vaccine development. A voting mechanism-based linear epitope (LE) prediction system was applied to identify and endorse LE candidates with a minimum length requirement for each clustered subfamily Results The experimental results showed that four conserved epitopes among the Iridovirideae family, one exclusive epitope for invertebrate subfamily and two exclusive epitopes for vertebrate family were predicted. These predicted LE candidates were further validated by ELISA assays for evaluating the strength of antigenicity and cross antigenicity. The conserved LEs for Iridoviridae family reflected high antigenicity responses for the two subfamilies, while exclusive LEs reflected high antigenicity responses only for the host-specific subfamily Conclusions Host-specific characteristics are important features and constraints for effective epitope prediction. Our proposed voting mechanism based system provides a novel approach for in silico LE prediction prior to vaccine development, and it is especially powerful for analyzing antigen sequences with exclusive features between two clustered groups.
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Affiliation(s)
- Tao-Chuan Shih
- Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung, Taiwan
| | - Li-Ping Ho
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan
| | - Jen-Leih Wu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung, Taiwan.,Institute of Cellular and Organismic Biology, Academia Sinica, Taipei, Taiwan
| | - Hsin-Yiu Chou
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan. .,Department of Aquaculture, College of Life Science, National Taiwan Ocean University, Keelung, Taiwan.
| | - Tun-Wen Pai
- Department of Computer Science and Engineering, National Taiwan Ocean University, Keelung, Taiwan. .,Department of Computer Science and Information Engineering, National Taipei University of Technology, Taipei, Taiwan.
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19
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Park J, Kwon W, Kim WS, Jeong HD, Hong S. Cloning and expressional analysis of secretory and membrane-bound IgM in rock bream (Oplegnathus fasciatus) under megalocytivirus infection and vaccination. FISH & SHELLFISH IMMUNOLOGY 2019; 87:275-285. [PMID: 30668998 DOI: 10.1016/j.fsi.2019.01.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 12/28/2018] [Accepted: 01/13/2019] [Indexed: 06/09/2023]
Abstract
In this study, for better understanding the humoral immunity of rock bream (Oplegnathus fasciatus), 2 transcripts of immunoglobulin M (IgM) heavy chain gene including membrane bound (m-IgM) and secretory (s-IgM) forms were sequenced and analyzed their tissue distribution and differential expression in rock bream under rock bream iridovirus (RBIV) infection and vaccination since RBIV has caused mass mortality in rock bream aquaculture in Korea. Consequently, s-IgM cDNA was 1902 bp in length encoding a leader region, a variable region, four constant regions (CH1, CH2, CH3, CH4) and a C-terminal region while m-IgM cDNA was 1689 bp in length encoding shorter three constant regions (CH1, CH2, CH3) and two transmembrane regions. The predicted s-IgM and m-IgM represent a high structural similarity to other species including human. In tissue distribution analysis in healthy fish, the highest expression of s-IgM was observed in head kidney followed by body kidney, spleen, and mid gut whereas m-IgM expression was the highest in blood followed by head kidney and spleen. In vitro, s-IgM expression was up-regulated by LPS in head kidney and spleen cells at 24 h with no change of m-IgM expression. In vivo upon vaccination, s-IgM expression was up-regulated in liver and blood but not in head kidney while m-IgM expression was only up-regulated in head kidney. After challenge with RBIV, s-IgM expression level was higher in vaccinated fish than in unvaccinated fish and m-IgM expression was up-regulated in head kidney of vaccinated group. In conclusion, differential expression of m-IgM and s-IgM may indicate their differential functions to produce the most effective IgM during adaptive immune response. Although it is not able to assess specific IgM at protein level due to a lack of antibody against rock bream IgM, the present study on s-IgM and m-IgM gene expressions upon infection and vaccination will be useful in developing efficient vaccines in the future.
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Affiliation(s)
- Jinhwan Park
- Department of Wellness Bio-Industrial, Gangneung Wonju National University, South Korea
| | - Wooju Kwon
- Department of Aquatic Life Medicine, Pukyung National University, South Korea
| | - Wi-Sik Kim
- Department of Aquatic Life Medicine, Chonnam National University, South Korea
| | - Hyun-Do Jeong
- Department of Aquatic Life Medicine, Pukyung National University, South Korea
| | - Suhee Hong
- Department of Wellness Bio-Industrial, Gangneung Wonju National University, South Korea.
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20
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Tajimi S, Kondo M, Nakanishi T, Nagasawa T, Nakao M, Somamoto T. Generation of virus-specific CD8 + T cells by vaccination with inactivated virus in the intestine of ginbuna crucian carp. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 93:37-44. [PMID: 30579936 DOI: 10.1016/j.dci.2018.12.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 12/19/2018] [Accepted: 12/19/2018] [Indexed: 06/09/2023]
Abstract
Although a previous study using ginbuna crucian carp suggested that cell-mediated immunity can be induced by the oral administration of inactivated viruses, which are exogenous antigens, there is no direct evidence that CD8+ cytotoxic T cells (CTLs) in teleost fish are generated by vaccination with exogenous antigens. In the present study, we investigated whether antigen-specific CD8+ CTLs in ginbuna crucian carp can be elicited by intestinal immunization with an exogenous antigen without any adjuvant. The IFNγ-1 and T-bet mRNA expressions were up-regulated in intestinal leukocytes following the administration of formalin-inactivated crucian hematopoietic necrosis virus (FI-CHNV), whereas the down-regulation of these genes was observed in kidney leukocytes. Furthermore, an increase in the percentage of proliferating CD8+ cells was detected in the posterior portion of the hindgut, suggesting that the virus-specific CTLs are locally generated in this site. In addition, cell-mediated cytotoxicity against CHNV-infected syngeneic cells and the in vivo inhibition of viral replication were induced by immunization with FI-CHNV. Unexpectedly, intraperitoneal immunization with FI-CHNV induced a type I helper T cell (Th1)-response in the intestine, but not in the kidney; however, its effect was slightly lower than that reported after intestinal immunization. These findings suggest that the posterior portion of the intestine is an important site for generating virus-specific CTLs by vaccination with the inactivated vaccine.
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Affiliation(s)
- Seisuke Tajimi
- Laboratory of Marine Biochemistry, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, 819-0395, Japan
| | - Masakazu Kondo
- Department of Applied Aquabiology, National Fisheries University, Japan Fisheries Research and Education Agency, Shimonoseki, Yamaguchi, 759-6595, Japan
| | - Teruyuki Nakanishi
- Department of Veterinary Medicine, Nihon University, Fujisawa, Kanagawa, 252-8510, Japan
| | - Takahiro Nagasawa
- Laboratory of Marine Biochemistry, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, 819-0395, Japan
| | - Miki Nakao
- Laboratory of Marine Biochemistry, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, 819-0395, Japan
| | - Tomonori Somamoto
- Laboratory of Marine Biochemistry, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka, 819-0395, Japan.
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21
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Zhou S, Song D, Zhou X, Mao X, Zhou X, Wang S, Wei J, Huang Y, Wang W, Xiao SM, Qin Q. Characterization of Bacillus subtilis from gastrointestinal tract of hybrid Hulong grouper (Epinephelus fuscoguttatus × E. lanceolatus) and its effects as probiotic additives. FISH & SHELLFISH IMMUNOLOGY 2019; 84:1115-1124. [PMID: 30463174 DOI: 10.1016/j.fsi.2018.10.058] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 10/17/2018] [Accepted: 10/22/2018] [Indexed: 06/09/2023]
Abstract
Probiotics are widely used for the improvement of animals' growth and health. However, few marine aquatic probiotics are applied and licensed in China. In this study, a Bacillus spp. strain was isolated from the Hulong grouper gastrointestinal tract, which was identified as a new strain of Bacillus subtilis and was named as 7k. B. subtilis 7k showed desirable capability of sporulation and resistance to heat, simulated gastric juice and simulated duodenum juice, indicating its potential as probiotics. Seven antimicrobial chemicals were found in the secretion of the B. subtilis 7k. B. subtilis 7k addition in diet promoted the growth rate of Hulong groupers. Moreover, B. subtilis 7k can inhibit infection by iridovirus, making B. subtilis 7k a suitable kind of probiotic for maintaining fishes' health. Our results also revealed that B. subtilis 7k induced non-specific immune response in Hulong grouper under virus infection. Hulong grouper fed by diets containing B. subtilis 7k at 108 and 1010 cfu g-1 for 4-8 weeks were significantly strengthened in serum lysozyme activity, serum alternative complement activity (ACH50), serum bactericidal activity, respiratory burst, superoxide dismutase activity (SOD), and phagocytic activity of head kidney leucocytes when compared with those fed by control diets. In conclusion, B. subtilis 7k was isolated and characterized to be a kind of process enduring, growth stimulating, immunity enhancing and health promoting probiotic using in grouper culture.
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Affiliation(s)
- Sheng Zhou
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
| | - Deli Song
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China; Department of Pharmacology, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Xiaofeng Zhou
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Xinliang Mao
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Xuefeng Zhou
- Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, China
| | - Sunli Wang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Jingguang Wei
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Youhua Huang
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China
| | - Wenxiong Wang
- Department of Ocean Science, Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong
| | - Su-Mei Xiao
- Department of Medical Statistics and Epidemiology, School of Public Health, Sun Yat-Sen University, Guangzhou, 510080, China
| | - Qiwei Qin
- Joint Laboratory of Guangdong Province and Hong Kong Region on Marine Bioresource Conservation and Exploitation, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
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22
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Nguyen HT, Nguyen TTT, Chen YC, Vu-Khac H, Wang PC, Chen SC. Enhanced immune responses and effectiveness of refined outer membrane protein vaccines against Vibrio harveyi in orange-spotted grouper (Epinephelus coioides). JOURNAL OF FISH DISEASES 2018; 41:1349-1358. [PMID: 29882295 DOI: 10.1111/jfd.12828] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/15/2018] [Accepted: 04/16/2018] [Indexed: 06/08/2023]
Abstract
Vibriosis is a severe infection occurring in many commercially important marine fish species. In this study, vaccines containing Vibrio harveyi recombinant outer membrane protein K (rOmpK), outer membrane protein U (rOmpU) and rOmpK-OmpU fusion protein in addition to the metabolizable MontanideTM ISA 763 A VG adjuvant were developed and evaluated in the orange-spotted grouper. The results indicate that recombinant V. harveyi protein-based vaccines resulted in a remarkably higher expression of IL-1β and IL-8 at 24 hr, and greater antibody production, as early as 2 weeks postimmunization. Notably, enhanced immune responses and significant protective efficacy against V. harveyi infections were observed in the fusion protein vaccine-injected fishes with relative per cent survival value of 81.8%. Additionally, the rOmpK-OmpU antisera presented a high bactericidal effect on not only V. harveyi, but also Vibrio parahaermolyticus and Vibrio alginolyticus. Our results demonstrated that the fusion protein rOmpK-OmpU was an effective vaccine candidate that exhibited potentially great versatility for controlling vibrio infections.
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Affiliation(s)
- Hai Trong Nguyen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Thuy Thi Thu Nguyen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Yan-Chun Chen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Hung Vu-Khac
- Veterinary Institute of Research and Development of Central Vietnam, Nha Trang, Vietnam
| | - Pei-Chi Wang
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Southern Taiwan Fish Diseases Research Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
| | - Shih-Chu Chen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Southern Taiwan Fish Diseases Research Center, College of Veterinary Medicine, National Pingtung University of Science and Technology, Pingtung, Taiwan
- International Degree Program of Ornamental Fish Science and Technology, International College, National Pingtung University of Science and Technology, Pingtung, Taiwan
- Research Center for Animal Biologics, National Pingtung University of Science and Technology, Pingtung, Taiwan
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23
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Immunity, feed, and husbandry in fish health management of cultured Epinephelus fuscoguttatus with reference to Epinephelus coioides. AQUACULTURE AND FISHERIES 2018. [DOI: 10.1016/j.aaf.2018.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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24
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Jia K, Yuan Y, Liu W, Liu L, Qin Q, Yi M. Identification of Inhibitory Compounds Against Singapore Grouper Iridovirus Infection by Cell Viability-Based Screening Assay and Droplet Digital PCR. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2018; 20:35-44. [PMID: 29209860 DOI: 10.1007/s10126-017-9785-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 11/20/2017] [Indexed: 06/07/2023]
Abstract
Singapore grouper iridovirus (SGIV) is one of the major causative agents of fish diseases and has caused significant economic losses in the aquaculture industry. There is currently no commercial vaccine or effective antiviral treatment against SGIV infection. Annually, an increasing number of small molecule compounds from various sources have been produced, and many are proved to be potential inhibitors against viruses. Here, a high-throughput in vitro cell viability-based screening assay was developed to identify antiviral compounds against SGIV using the luminescent-based CellTiter-Glo reagent in cultured grouper spleen cells by quantificational measurement of the cytopathic effects induced by SGIV infection. This assay was utilized to screen for potential SGIV inhibitors from five customized compounds which had been reported to be capable of inhibiting other viruses and 30 compounds isolated from various marine organisms, and three of them [ribavirin, harringtonine, and 2-hydroxytetradecanoic acid (2-HOM)] were identified to be effective on inhibiting SGIV infection, which was further confirmed with droplet digital PCR (ddPCR). In addition, the ddPCR results revealed that ribavirin and 2-HOM inhibited SGIV replication and entry in a dose-dependent manner, and harringtonine could reduce SGIV replication rather than entry at the working concentration without significant toxicity. These findings provided an easy and reliable cell viability-based screening assay to identify compounds with anti-SGIV effect and a way of studying the anti-SGIV mechanism of compounds.
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Affiliation(s)
- Kuntong Jia
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai Key Laboratory of Marine Bioresources and Environment, School of Marine Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yongming Yuan
- Department of Biological Sciences, National University of Singapore, Science Drive 4, Singapore, 117543, Singapore
| | - Wei Liu
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai Key Laboratory of Marine Bioresources and Environment, School of Marine Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Lan Liu
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai Key Laboratory of Marine Bioresources and Environment, School of Marine Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Qiwei Qin
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, China.
| | - Meisheng Yi
- Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Zhuhai Key Laboratory of Marine Bioresources and Environment, School of Marine Sciences, Sun Yat-sen University, Guangzhou, Guangdong, China.
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25
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Peng W, Sun Y, Li GF, He LG, Li RZ, Liang YS, Ding X, Yu X, Zhang Y, Lin HR, Lu DQ. Two Distinct Interferon-γ in the Orange-Spotted Grouper ( Epinephelus coioides): Molecular Cloning, Functional Characterization, and Regulation in Toll-Like Receptor Pathway by Induction of miR-146a. Front Endocrinol (Lausanne) 2018; 9:41. [PMID: 29535680 PMCID: PMC5834515 DOI: 10.3389/fendo.2018.00041] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Interferon gamma (IFNγ) is a Th1 cytokine that is critical for innate and adaptive immunity. Toll-like receptors (TLRs) signaling pathways are critical in early host defense against invading pathogens. miR-146a has been reported to participate in the regulation of host immunity. The known mechanisms of integrations between the IFNγ and TLR signaling pathways are incompletely understood, especially in teleosts. In this study, orange-spotted grouper (Epinephelus coioides) IFNγ1 and IFNγ2, their biological activities, especially their involvements in TLR pathway, were explored. We identified and cloned two IFNγ genes of E. coioides, namely EcIFNγ1 and EcIFNγ2. The produced recombinant E. coioides IFNγ1 (rEcIFNγ1) and IFNγ2 (rEcIFNγ2) proteins showed functions, which are similar to those of other bony fishes, such as enhancing nitric oxide responses and respiratory burst response. rEcIFNγ2 could regulate TLR pathway by enhancing the promoter activity of miR-146a upstream sequence and thus increasing the expression level of miR-146a, which possibly targets TNF receptor-associated factor 6 (TRAF6), a key adapter molecule in TLR signaling pathway. Taken together, these findings unravel a novel regulatory mechanism of anti-inflammatory response by IFNγ2, which could mediate TLR pathway through IFNγ2-miR-146a-TRAF6 negative regulation loop. It is suggested that IFNγ2 may provide a promising therapeutic, which may help to fine tune the immune response.
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Affiliation(s)
- Wan Peng
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- Sun Yat-Sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, China
- Department of Experimental Research, Sun Yat-Sen University Cancer Center, Guangzhou, China
| | - Yan Sun
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Gao-Fei Li
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Liang-Ge He
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Ruo-Zhu Li
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Yao-Si Liang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Xu Ding
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Xue Yu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Yong Zhang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Hao-Ran Lin
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
| | - Dan-Qi Lu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals, Guangdong Provincial Key Laboratory for Aquatic Economic Animals, College of Life Sciences, Sun Yat-Sen University, Guangzhou, China
- *Correspondence: Dan-Qi Lu,
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Chinchar V, Waltzek TB, Subramaniam K. Ranaviruses and other members of the family Iridoviridae: Their place in the virosphere. Virology 2017. [DOI: 10.1016/j.virol.2017.06.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Vaccination with Recombinant Baculovirus Expressing Ranavirus Major Capsid Protein Induces Protective Immunity in Chinese Giant Salamander, Andrias davidianus. Viruses 2017; 9:v9080195. [PMID: 28757575 PMCID: PMC5580452 DOI: 10.3390/v9080195] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Revised: 07/20/2017] [Accepted: 07/21/2017] [Indexed: 11/16/2022] Open
Abstract
The Chinese giant salamander iridovirus (CGSIV), belonging to the genus Ranavirus in the family Iridoviridae, is the causative agent of an emerging infectious disease causing high mortality of more than 90% and economic losses in Chinese giant salamanders in China. In this study, a recombinant baculovirus-based vaccine expressing the CGSIV major capsid protein (MCP) was developed and its protective immunity in Chinese giant salamanders was evaluated. The recombinant Autographacalifornica nucleopolyhedrosis virus (AcNPV), expressing CGSIV MCP, designated as AcNPV-MCP, was generated with the highest titers of 1 × 10⁸ plaque forming units/mL (PFU/mL) and confirmed by Western blot and indirect immunofluorescence (IIF) assays. Western blot analysis revealed that the expressed MCP reacted with mouse anti-MCP monoclonal antibodies at the band of about 53 kDa. The results of IIF indicated that the MCP was expressed in the infected Spodoptera frugiperda 9 (Sf9) cells with the recombinant baculovirus, and the Chinese giant salamander muscle cells also transduced with the AcNPV-MCP. Immunization with the recombinant baculovirus of AcNPV-MCP elicited robust specific humoral immune responses detected by ELISA and neutralization assays and potent cellular immune responses in Chinese giant salamanders. Importantly, the effective immunization conferred highly protective immunity for Chinese giant salamanders against CGSIV challenge and produced a relative percent of survival rate of 84%. Thus, the recombinant baculovirus expressing CGSIV MCP can induce significant immune responses involving both humoral and cell-mediated immunity in Chinese giant salamanders and might represent a potential baculovirus based vaccine candidate for Chinese giant salamanders against CGSIV.
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Wu P, Liu Y, Jiang WD, Jiang J, Zhang YA, Zhou XQ, Feng L. Intestinal immune responses of Jian carp against Aeromonas hydrophila depressed by choline deficiency: Varied change patterns of mRNA levels of cytokines, tight junction proteins and related signaling molecules among three intestinal segments. FISH & SHELLFISH IMMUNOLOGY 2017; 65:34-41. [PMID: 28366783 DOI: 10.1016/j.fsi.2017.03.053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Revised: 03/21/2017] [Accepted: 03/29/2017] [Indexed: 06/07/2023]
Abstract
This study aimed to investigate the effects of choline deficiency on intestinal inflammation of fish after Aeromonas hydrophila infection and the potential molecular mechanisms. Juvenile Jian carp (Cyprinus carpio var. Jian) were fed two diets containing choline at 165 (deficient group) and 607 mg/kg diet respectively for 65 days. Choline deficiency decreased intestinal lysozyme activity, C3 and IgM contents, increased acid phosphatase activity, downregulated mRNA levels of antimicrobial peptides [liver-expressed antimicrobial peptide (LEAP) 2A, LEAP-2B, hepcidin and defensin], cytokines [interleukin (IL) 6a, tumor necrosis factor α (TNF-α), interferon γ2b (IFN-γ2b), IL-6b and transforming growth factor β2 (TGF-β2) only in proximal intestine, IL-10 in mid and distal intestine], immune-related signaling molecules [Toll-like receptor 4 (TLR4), myeloid differentiation primary response 88 (MyD88), nuclear factor kappa B (NF-κB), inhibitor of NF-κB (IκB), Janus kinase 3 (JAK3), and signal transducers and activators of transcription 5 (STAT5)], tight junction proteins (claudin 3b, claudin 3c, claudin 11 and occludin), and mitogen-activated protein kinases p38 (p38MAPK) in proximal and distal intestine of juvenile Jian carp after A. hydrophila challenge. In contrast, choline deficiency upregulated mRNA levels of antimicrobial peptides (LEAP-2A, LEAP-2B, hepcidin and defensin), cytokines (IL-6b, IFN-γ2b and TGF-β2), immune-related signaling molecules (TLR4, MyD88, NF-κB, IκB, JAK3, STAT4 in three intestinal segments, and STAT6), claudin 11, and p38MAPK in mid intestine of fish. This study provides new finding that choline deficiency-induced immune responses against A. hydrophila infection were varied among three intestinal segments in fish.
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Affiliation(s)
- Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Jun Jiang
- Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China.
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu, 611130, China.
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29
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Nguyen HT, Thu Nguyen TT, Tsai MA, Ya-Zhen E, Wang PC, Chen SC. A formalin-inactivated vaccine provides good protection against Vibrio harveyi infection in orange-spotted grouper (Epinephelus coioides). FISH & SHELLFISH IMMUNOLOGY 2017; 65:118-126. [PMID: 28419854 DOI: 10.1016/j.fsi.2017.04.008] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 04/07/2017] [Accepted: 04/13/2017] [Indexed: 06/07/2023]
Abstract
Vibrio harveyi is one of the most common threats to farmed grouper, so considerable efforts are in practice to control the pathogen. This study presents a highly effective vaccine against V. harveyi in the orange-spotted grouper with the help of a single intraperitoneal immunization. The vaccine candidate was in form of whole, formalin-inactivated V. harveyi cells combined with a metabolizable ISA763 AVG adjuvant. Our results indicated that the vaccine triggered a remarkably higher expression level of interleukin (IL)-1β, IL-6, IL-8, and IL-10 in the groupers' kidneys and spleens, as recorded after 1 and 3 days of immunization. Antibody titers were significantly elevated in the vaccinated fish. A pivotal observation was that the vaccine highly protected the grouper from a homologous V. harveyi strain challenge with relative percentage survival values of 100% and 91.7% at 6 and 12 weeks post-immunization, respectively. Vaccinated fish also demonstrated strong cross-protection against a heterologous bacterial isolate challenge. Therefore, the inactivated V. harveyi vaccine is a promising candidate that could stimulate good immune responses and confer remarkable protection in farmed groupers.
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Affiliation(s)
- Hai Trong Nguyen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, No. 1, Shuefu Road, Neipu, Pingtung 91201, Taiwan.
| | - Thuy Thi Thu Nguyen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, No. 1, Shuefu Road, Neipu, Pingtung 91201, Taiwan.
| | - Ming-An Tsai
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, No. 1, Shuefu Road, Neipu, Pingtung 91201, Taiwan.
| | - E Ya-Zhen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, No. 1, Shuefu Road, Neipu, Pingtung 91201, Taiwan.
| | - Pei-Chyi Wang
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, No. 1, Shuefu Road, Neipu, Pingtung 91201, Taiwan.
| | - Shih-Chu Chen
- Department of Veterinary Medicine, College of Veterinary Medicine, National Pingtung University of Science and Technology, No. 1, Shuefu Road, Neipu, Pingtung 91201, Taiwan; International Degree Program of Ornamental fish Science and Technology, International College, National Pingtung University of Science and Technology, No. 1, Shuefu Road, Neipu, Pingtung 91201, Taiwan.
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Guo M, Wei J, Huang X, Zhou Y, Yan Y, Qin Q. JNK1 Derived from Orange-Spotted Grouper, Epinephelus coioides, Involving in the Evasion and Infection of Singapore Grouper Iridovirus (SGIV). Front Microbiol 2016; 7:121. [PMID: 26903999 PMCID: PMC4748057 DOI: 10.3389/fmicb.2016.00121] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 01/22/2015] [Indexed: 01/16/2023] Open
Abstract
c-Jun N-terminal kinase (JNK) regulates cellular responses to various extracellular stimuli, environmental stresses, pathogen infections, and apoptotic agents. Here, a JNK1, Ec-JNK1, was identified from orange-spotted grouper, Epinephelus coioides. Ec-JNK1 has been found involving in the immune response to pathogen challenges in vivo, and the infection of Singapore grouper iridovirus (SGIV) and SGIV-induced apoptosis in vitro. SGIV infection activated Ec-JNK1, of which phosphorylation of motif TPY is crucial for its activity. Over-expressing Ec-JNK1 phosphorylated transcription factors c-Jun and promoted the infection and replication of SGIV, while partial inhibition of the phosphorylation of Ec-JNK1 showed the opposite effects by over-expressing the dominant-negative EcJNK1-Δ183-185 mutant. Interestingly, SGIV enhanced the viral infectivity by activating Ec-JNK1 which in turn drastically inhibited the antiviral responses of type 1 IFN, indicating that Ec-JNK1 could be involved in blocking IFN signaling during SGIV infection. In addition, Ec-JNK1 enhanced the activation of AP-1, p53, and NF-κB, and resulted in increasing the levels of SGIV-induced cell death. The caspase 3-dependent activation correlated with the phosphorylation of Ec-JNK1 and contributed to SGIV-induced apoptosis. Taken together, SGIV modulated the phosphorylation of Ec-JNK1 to inactivate the antiviral signaling, enhance the SGIV-induced apoptosis and activate transcription factors for efficient infection and replication. The “positive cooperativity” molecular mechanism mediated by Ec-JNK1 contributes to the successful evasion and infection of iridovirus pathogenesis.
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Affiliation(s)
- Minglan Guo
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Jingguang Wei
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Xiaohong Huang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Yongcan Zhou
- Key Laboratory of Tropical Biological Resources of Ministry of Education, Hainan University Haikou, China
| | - Yang Yan
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China
| | - Qiwei Qin
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China; Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of SciencesGuangzhou, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and TechnologyQingdao, China
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31
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Wang T, Long X, Liu Z, Cheng Y, Yan S. Effect of copper nanoparticles and copper sulphate on oxidation stress, cell apoptosis and immune responses in the intestines of juvenile Epinephelus coioides. FISH & SHELLFISH IMMUNOLOGY 2015; 44:674-82. [PMID: 25839971 DOI: 10.1016/j.fsi.2015.03.030] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 03/22/2015] [Accepted: 03/24/2015] [Indexed: 05/18/2023]
Abstract
Copper nanoparticles (Cu-NPs) are widely used in various industrial and commercial applications, but little is known about their potential hazard in the intestines of marine teleosts. In this study we investigated the effects of Cu-NPs and soluble Cu in the intestines of juvenile Epinephelus coioides. The fish were exposed in triplicate to control, 20 or 100 μg Cu L(-1) as either copper sulphate (CuSO₄) or Cu-NPs for 25 days. With an increase in Cu-NPs or CuSO₄ dose, the concentration of malonaldehyde in the intestines significantly increased, whereas the activities of total superoxide dismutase and catalase as well as glutathione concentration decreased compared to the control. Statistical analysis of an apoptosis index of intestinal cells showed that general dose-dependent apoptosis was induced by Cu-NPs or CuSO₄, with Cu-NPs inducing the significantly higher apoptosis index than CuSOv. Caspase-3 and caspase-9 activities were increased with an increase in Cu-NPs or CuSO₄ dose, more so in the Cu-NPs than CuSO₄ treatment. With an increase in Cu-NPs or CuSOv dose, succinate dehydrogenase and Na(+)-K(+)-ATPase activity and cytochrome c concentration in mitochondria decreased, accompanied by increased cytochrome c concentration in the cytosol. Concentration of heat shock proteins 70 and 90 in the intestines and expression of corresponding genes were enhanced with an increase in the Cu-NPs or CuSOv dose, but the concentrations and expressions of immunoglobulin M and lysozyme decreased (more in the Cu-NPs than CuSO₄ treatment) compared to the control. Expression of interleukin-1beta and tumor necrosis factor-alpha showed a dose-dependent increase with the increased Cu-NPs or CuSO₄ dose, with the highest expression found in the Cu-NPs treatment. In conclusion, Cu-NPs had similar toxic effects as CuSOv in the intestines of juvenile E. coioides, but toxicity of Cu-NPs was more severe than that of CuSO₄.
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Affiliation(s)
- Tao Wang
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Xiaohua Long
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China.
| | - Zhaopu Liu
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Yongzhou Cheng
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
| | - Shaohua Yan
- Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, PR China
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A Review of Intra- and Extracellular Antigen Delivery Systems for Virus Vaccines of Finfish. J Immunol Res 2015; 2015:960859. [PMID: 26065009 PMCID: PMC4433699 DOI: 10.1155/2015/960859] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Revised: 04/08/2015] [Accepted: 04/09/2015] [Indexed: 01/04/2023] Open
Abstract
Vaccine efficacy in aquaculture has for a long time depended on evaluating relative percent survival and antibody responses after vaccination. However, current advances in vaccine immunology show that the route in which antigens are delivered into cells is deterministic of the type of adaptive immune response evoked by vaccination. Antigens delivered by the intracellular route induce MHC-I restricted CD8+ responses while antigens presented through the extracellular route activate MHC-II restricted CD4+ responses implying that the route of antigen delivery is a conduit to induction of B- or T-cell immune responses. In finfish, different antigen delivery systems have been explored that include live, DNA, inactivated whole virus, fusion protein, virus-like particles, and subunit vaccines although mechanisms linking these delivery systems to protective immunity have not been studied in detail. Hence, in this review we provide a synopsis of different strategies used to administer viral antigens via the intra- or extracellular compartments. Further, we highlight the differences in immune responses induced by antigens processed by the endogenous route compared to exogenously processed antigens. Overall, we anticipate that the synopsis put together in this review will shed insights into limitations and successes of the current vaccination strategies used in finfish vaccinology.
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Liu W, Xu J, Ma J, LaPatra SE, Meng Y, Fan Y, Zhou Y, Yang X, Zeng L. Immunological responses and protection in Chinese giant salamander Andrias davidianus immunized with inactivated iridovirus. Vet Microbiol 2014; 174:382-390. [PMID: 25465180 DOI: 10.1016/j.vetmic.2014.10.028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 10/14/2014] [Accepted: 10/23/2014] [Indexed: 10/24/2022]
Abstract
Chinese giant salamander hemorrhage is a newly emerged infectious disease in China and has caused huge economic losses. The causative pathogen has been identified as the giant salamander iridovirus (GSIV). In this study, the immunological responses and protection in Chinese giant salamander immunized with β-propiolactone inactivated GSIV are reported. Red and white blood cell counting and classification, phagocytic activity, neutralizing antibody titration, immune-related gene expression and determination of the relative percent survival were evaluated after vaccination. The red and white blood cell counts showed that the numbers of erythrocytes and leukocytes in the peripheral blood of immunized Chinese giant salamanders increased significantly on days 4 and 7 post-injection (P<0.01). Additionally, the differential leukocyte count of monocytes and neutrophils were significantly different compared to the control group (P<0.01); the percentage of lymphocytes was 70.45±7.52% at day 21. The phagocytic percentage and phagocytic index was 38.78±4.33% and 3.75±0.52, respectively, at day 4 post-immunization which were both significantly different compared to the control group (P<0.01). The serum neutralizing antibody titer increased at day 14 post-immunization and reached the highest titer (341±9.52) at day 21. The quantitative PCR analysis revealed that the immunization significantly up-regulated the expression of immune related genes TLR-9 and MyD88 the first two weeks after immunization. The challenge test conducted at day 30 post-injection demonstrated that the immunized group produced a relative survival of 72%. These results indicate that the inactivated GSIV could elicit significant non-specific and specific immunological responses in Chinese giant salamander that resulted in significant protection against GSIV induced disease.
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Affiliation(s)
- Wenzhi Liu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China
| | - Jin Xu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Jie Ma
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Scott E LaPatra
- Research Division, Clear Springs Foods, Inc., P.O. Box 712, Buhl, ID 83316, USA
| | - Yan Meng
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Yuding Fan
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Yong Zhou
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Xin Yang
- College of Fisheries, Nanjing Agricultural University, Wuxi 214081, China
| | - Lingbing Zeng
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China; College of Fisheries and Life Sciences, Shanghai Ocean University, Shanghai 201306, China.
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34
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Li P, Yan Y, Wei S, Wei J, Gao R, Huang X, Huang Y, Jiang G, Qin Q. Isolation and characterization of a new class of DNA aptamers specific binding to Singapore grouper iridovirus (SGIV) with antiviral activities. Virus Res 2014; 188:146-54. [PMID: 24768847 DOI: 10.1016/j.virusres.2014.04.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 04/11/2014] [Accepted: 04/11/2014] [Indexed: 11/18/2022]
Abstract
The Singapore grouper iridovirus (SGIV), a member of the genus Ranavirus, is a major viral pathogen that has caused heavy economic losses to the grouper aquaculture industry in China and Southeast Asia. No efficient method of controlling SGIV outbreaks is currently available. Systematic evolution of ligands by exponential enrichment (SELEX) is now widely used for the in vitro selection of artificial ssDNA or RNA ligands, known as aptamers, which bind to targets through their stable three-dimensional structures. In our current study, we generated ssDNA aptamers against the SGIV, and evaluated their ability to block SGIV infection in cultured fish cells and cultured fish in vivo. The anti-SGIV DNA aptamers, LMB-761, LMB-764, LMB-748, LMB-439, LMB-755, and LMB-767, were selected from a pool of oligonucleotides randomly generated using a SELEX iterative method. The analysis of the secondary structure of the aptamers revealed that they all formed similar stem-loop structures. Electrophoretic mobility shift assays showed that the aptamers bound SGIV specifically, as evidenced by a lack cross-reactivity with the soft shell turtle iridovirus. The aptamers produced no cytotoxic effects in cultured grouper spleen cells (GS). Assessment of cytopathic effects (CPE) and viral titer assays showed that LMB-761, LMB-764, LMB-748, LMB-755, and LMB-767 significantly inhibited SGIV infection in GS cells. The in vivo experiments showed that LMB-761 and LMB-764 reduced SGIV-related mortality, and no negative effects were observed in orange-spotted grouper, Epinephelus coioides, indicating that these DNA aptamers may be suitable antiviral candidates for controlling SGIV infections in fish reared in marine aquaculture facilities.
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Affiliation(s)
- Pengfei Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
| | - Yang Yan
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China
| | - Shina Wei
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China
| | - Jingguang Wei
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China
| | - Ren Gao
- State Key Laboratory Breeding Base for Sustainable Exploitation of Tropical Biotic Resources, College of Marine Science, Hainan University, Haikou 570228, China
| | - Xiaohong Huang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China
| | - Youhua Huang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China
| | - Guohua Jiang
- Analytical and Testing Center, Beijing Normal University, Xinjiekouwai Street, Beijing 100875, China.
| | - Qiwei Qin
- Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China.
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Somamoto T, Koppang EO, Fischer U. Antiviral functions of CD8(+) cytotoxic T cells in teleost fish. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2014; 43:197-204. [PMID: 23938605 DOI: 10.1016/j.dci.2013.07.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2013] [Revised: 07/24/2013] [Accepted: 07/24/2013] [Indexed: 06/02/2023]
Abstract
Cytotoxic T-cells (CTLs) play a pivotal role in eliminating viruses in mammalian adaptive immune system. Many recent studies on T-cell immunity of fish have suggested that teleost CTLs are also important for antiviral immunity. Cellular functional studies using clonal ginbuan crucian carp and rainbow trout have provided in vivo and in vitro evidence that in many respects, virus-specific CTLs of fish have functions similar to those of mammalian CTLs. In addition, mRNA expression profiles of CTL-related molecules, such as CD8, TCR and MHC class I, have shown that in a wide range of fish species, CTLs are involved in antiviral adaptive immunity. These findings are a basis to formulate possible vaccination strategies to trigger effective antiviral CTL responses in teleost fish. This review describes recent advances in our understanding of antiviral CTL functions in teleost fish and discusses vaccination strategies for efficiently inducing CTL activities.
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Affiliation(s)
- Tomonori Somamoto
- Laboratory of Marine Biochemistry, Department of Bioscience and Biotechnology, Graduate School of Bioresource and Bioenvironmental Sciences, Kyushu University, Fukuoka 812-8581, Japan.
| | - Erling Olaf Koppang
- Section of Anatomy and Pathology, Institute of Basic Science and Aquatic Medicine, Norwegian School of Veterinary Science, Ullevålsveien 72, 0033 Oslo, Norway
| | - Uwe Fischer
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Institute of Infectology, 17493 Greifswald-Insel Riems, Germany
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