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Wu S, Huang J, Li Y. Antiviral effect of miR-206 in rainbow trout (Oncorhynchus mykiss) against infectious hematopoietic necrosis virus infection. FISH & SHELLFISH IMMUNOLOGY 2024; 149:109552. [PMID: 38599364 DOI: 10.1016/j.fsi.2024.109552] [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: 01/30/2024] [Revised: 03/12/2024] [Accepted: 04/07/2024] [Indexed: 04/12/2024]
Abstract
Infectious hematopoietic necrosis (IHN), caused by IHN virus, is a highly contagious and lethal disease that seriously hampers the development of rainbow trout (Oncorhynchus mykiss) aquaculture. However, the immune response mechanism of rainbow trout underlying IHNV infection remains largely unknown. MicroRNAs act as post-transcriptional regulators of gene expression and perform a crucial role in fish immune response. Herein, the regulatory mechanism and function of miR-206 in rainbow trout resistance to IHNV were investigated by overexpression and silencing. The expression analysis showed that miR-206 and its potential target receptor-interacting serine/threonine-protein kinase 2 (RIP2) exhibited significant time-dependent changes in headkidney, spleen and rainbow trout primary liver cells infected with IHNV and their expression displayed a negative correlation. In vitro, the interaction between miR-206 and RIP2 was verified by luciferase reporter assay, and miR-206 silencing in rainbow trout primary liver cells markedly increased RIP2 and interferon (IFN) expression but significantly decreased IHNV copies, and opposite results were obtained after miR-206 overexpression or RIP2 knockdown. In vivo, overexpressed miR-206 with agomiR resulted in a decrease in the expression of RIP2 and IFN in liver, headkidney and spleen. This study revealed the key role of miR-206 in anti-IHNV, which provided potential for anti-viral drug screening in rainbow trout.
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Affiliation(s)
- Shenji Wu
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China
| | - Jinqiang Huang
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China.
| | - Yongjuan Li
- College of Animal Science and Technology, Gansu Agricultural University, Lanzhou, 730070, China
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Liyanage TD, Nikapitiya C, De Zoysa M. Chitosan nanoparticles-based in vivo delivery of miR-155 modulates the Viral haemorrhagic septicaemia virus-induced antiviral immune responses in zebrafish (Danio rerio). FISH & SHELLFISH IMMUNOLOGY 2024; 144:109234. [PMID: 37984615 DOI: 10.1016/j.fsi.2023.109234] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 10/24/2023] [Accepted: 11/14/2023] [Indexed: 11/22/2023]
Abstract
Viral haemorrhagic septicaemia virus (VHSV) is one of the highly pathogenic virus, which causes viral haemorrhagic septicaemia disease in both marine and freshwater fish. Micro RNA-155 (miRNA-155) is a multifunctional small non-coding RNA and it involves regulation of immune responses during viral infection. In this study, dre-miR-155 mimics were encapsulated into chitosan nanoparticles (CNPs). Resulted encapsulated product (miR-155-CNPs) was investigated for its immunomodulation role in zebrafish during experimentally challenged VHSV infection. Successful encapsulation of dre-miR-155 mimics into CNPs was confirmed through average nanoparticle (NPs) size (341.45 ± 10.00 nm), increased encapsulation efficiency percentage (98.80%), bound dre-miR-155 with chitosan, sustained release in vitro (up to 40%), and the integrity of RNA. Overexpressed miR-155 was observed in gills, muscle, and kidney tissues (5.42, 19.62, and 140.72-folds, respectively) after intraperitoneal delivery of miR-155-CNPs into zebrafish upon VHSV infection (miR-155-CNPs + VHSV). The miR-155-CNPs + VHSV infected fish had the highest cumulative survival (85%), which was associated with low viral copy numbers. The miR-155-overexpressing fish showed significantly decreased expression of ifnγ, irf2bpl, irf9, socs1a, il10, and caspase3, compared to that of the miR-155 inhibitor + VHSV infected fish group. In contrast, il1β, tnfα, il6, cd8a, and p53 expressions were upregulated in miR-155-overexpressed zebrafish compared to that of the control. The overall findings indicate the successful delivery of dre-miR-155 through miR-155-CNPs that enabled restriction of VHSV infection in zebrafish presumably by modulating immune gene expression.
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Affiliation(s)
- T D Liyanage
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea; Department of Microbiology and Immunology, University of Otago, 9054, Dunedin, New Zealand
| | - Chamilani Nikapitiya
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea
| | - Mahanama De Zoysa
- College of Veterinary Medicine and Research Institute of Veterinary Medicine, Chungnam National University, Yuseong-gu, Daejeon 34134, Republic of Korea.
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Kim JY, Kim HJ, Park JS, Kwon SR. DNA vaccine dual-expressing viral hemorrhagic septicemia virus glycoprotein and C-C motif chemokine ligand 19 induces the expression of immune-related genes in zebrafish (Danio rerio). JOURNAL OF MICROBIOLOGY (SEOUL, KOREA) 2022; 60:1032-1038. [PMID: 35913595 DOI: 10.1007/s12275-022-2231-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/01/2022] [Accepted: 07/06/2022] [Indexed: 10/16/2022]
Abstract
Glycoprotein (G protein)-based DNA vaccines are effective in protecting aquaculture fish from rhabdoviruses but the degree of immune response they elicit depends on plasmid concentration and antigen cassette. Here, we developed a DNA vaccine using the viral hemorrhagic septicemia virus G (VG) gene and chemokine (C-C motif) ligand 19 (CCL19)a.2 regulated by the CMV promoter as the molecular adjuvant. After transfection of the prepared plasmid (pVG + CCL19) into epithelioma papulosum cyprini cells, mRNA expression was confirmed through quantitative real-time polymerase chain reaction. The vaccine was intramuscularly injected into zebrafish (Danio rerio), and 28 days after immunization, viral hemorrhagic septicemia virus (105 TCID50/10 µl/fish) was intraperitoneally injected. A survival rate of 68% was observed in the pVG + CCL19 group but this was not significantly different from the survival rate of fish treated with pVG alone, that is, without the adjuvant. However, the expression of interferon- and cytokine-related genes in the spleen and kidney tissues of zebrafish was significantly increased (p < 0.05) on days 1, 3, 7, and 14 after immunization. Thus, CCL19a.2 induced an initial immune response as a molecular adjuvant, which may provide initial protection against virus infection before vaccination-induced antibody formation. This study provides insights on the functions of CCL19a.2 adjuvant in DNA vaccines.
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Affiliation(s)
- Jin-Young Kim
- Department of Aqualife Medicine, Chonnam National University, Yeosu, 59626, Korea
| | - Hyoung Jun Kim
- OIE Reference Laboratory for VHS, National Institute of Fisheries Science, Busan, 46083, Korea
| | - Jeong Su Park
- Department of Aquatic Life Medical Sciences, Sunmoon University, Asan, 31460, Korea
| | - Se Ryun Kwon
- Department of Aquatic Life Medical Sciences, Sunmoon University, Asan, 31460, Korea.
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Salazar C, Galaz M, Ojeda N, Marshall SH. Expression of ssa-miR-155 during ISAV infection in vitro: Putative role as a modulator of the immune response in Salmo salar. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 122:104109. [PMID: 33930457 DOI: 10.1016/j.dci.2021.104109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/21/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Multiple cellular components are involved in pathogen-host interaction during viral infection; in this context, the role of miRNAs have become highly relevant. We assessed the expression of selected miRNAs during an in vitro infection of a Salmo salar cell line with Infectious Salmon Anemia Virus (ISAV), the causative agent of a severe disease by the same name. Salmon orthologs for miRNAs that regulate antiviral responses were measured using RT-qPCR in an in vitro time-course assay. We observed a modulation of specific miRNAs expression, where ssa-miR-155-5p was differentially over-expressed. Using in silico analysis, we identified the putative mRNA targets for ssa-miR-155-5p, finding a high prevalence of hosts immune response-related genes; moreover, several mRNAs involved in the viral infective process were also identified as targets for this miRNA. Our results suggest a relevant role for miR-155-5p in Salmo salar during an ISAV infection as a regulator of the immune response to the virus.
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Affiliation(s)
- Carolina Salazar
- Instituto de Biologia, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
| | - Martín Galaz
- Instituto de Biologia, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
| | - Nicolás Ojeda
- Instituto de Biologia, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
| | - Sergio H Marshall
- Instituto de Biologia, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile.
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Tang X, Fu J, Tan X, Shi Y, Ye J, Guan W, Shi Y, Xu M. The miR-155 regulates cytokines expression by SOSC1 signal pathways of fish in vitro and in vivo. FISH & SHELLFISH IMMUNOLOGY 2020; 106:28-35. [PMID: 32707297 DOI: 10.1016/j.fsi.2020.07.042] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/19/2020] [Accepted: 07/20/2020] [Indexed: 06/11/2023]
Abstract
MiR-155 is reported as immune regulated miRNA in mammalian corresponding to immunity, antibacterial and antiviral effects regulation. However, the roles and mechanisms of the miRNA have remained largely undefined. We herein comprehensively investigated the functions of miR-155 in vitro and in vivo by miR-155 mimics, agomir and antagomir in Cyprinus carpio and Ictalurus punctatus, with the target genes in the SOSC1 pathway certified in I. punctatus via luciferase reporter assays. Results showed that the miR-155 regulated the expressions of cytokines, including TNF-α, IFN-γ, IL-1β, IL-6 and IL-10. Further research confirmed SOSC1 as one of the targets of the miRNA, and the JAK1/STAT3/SOSC1 signal pathway involved in the miR-155 effects on the expression of immune cytokines as well. Additionally, the changes of TLR2 in fish may also be related to miR-155 along with its target SOCS1, and the TLR2/MyD88 pathway may partly participate in the effects of the miR-155 on the cytokines. The research here confirmed that the miR-155 can regulate cytokines expression by SOSC1 signal pathways of fish in vitro and in vivo, which would provide resources for understanding and studying about immune regulation in fish.
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Affiliation(s)
- Xuelian Tang
- 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
| | - Jinghua Fu
- 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.
| | - Xukai Tan
- 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
| | - Yunfeng Shi
- 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
| | - Jiawei Ye
- 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
| | - Wanting Guan
- 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
| | - Yifu Shi
- 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
| | - Minjun Xu
- 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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Abstract
The objective of this study was to conduct field experiments comparing formulated (extruded pellets (E.P)) and raw-fish (moist pellets (M.P)) feeds at two flounder aquaculture farms for six months to obtain the basic data necessary for improving aquafarmers’ awareness of feed-quality issues and firmly establish and expand the use of formulated feed. According to the results, the M.P group was higher in weight gain, feed efficiency ratio, protein efficiency ratio, and specific growth rate and lower in mortality rate than the E.P group. All cases of mortality were caused by six kinds of disease, four of which (Vibrio sp., Edwardsiella sp., Streptococcus sp., and Scuticociliates) were common to the two groups, whereas Lymphocystis arose only in the M.P group and abdominal inflation only in the E.P group at both farms. As for mortality in the present experiment, the numbers were 1047 at Da-Hae farm and 1167 at Global farm, with more fish dying in the E.P tanks than in the M.P tanks. By multiplying the number of deaths by selling price, the economic losses were $9650 and $10,756, respectively. Therefore, it should be considered an urgent priority to develop flounder-exclusive formulated feed for improved digestion and absorption rate and also to establish a water-quality-improvement management plan.
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Cao Y, Wang D, Li S, Zhao J, Xu L, Liu H, Lu T, Mou Z. A transcriptome analysis focusing on splenic immune-related mciroRNAs of rainbow trout upon Aeromonas salmonicida subsp. salmonicida infection. FISH & SHELLFISH IMMUNOLOGY 2019; 91:350-357. [PMID: 31128295 DOI: 10.1016/j.fsi.2019.05.048] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 05/10/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
MicroRNAs (miRNAs) are a class of small non-coding RNAs that can regulate the immune responses during pathogen infection. Aeromonas salmonicida (A. salmonicida) subsp. salmonicida is the causative agent of furunculosis in salmon and trout. To identify the miRNAs and investigate the specific miRNAs in rainbow trout upon A. salmonicida subsp. salmonicida infection, we performed high throughput sequencing using the spleens of rainbow trout infected with and without an A. salmonicida subsp. salmonicida clinical isolate. A total of 381 known miRNAs and 926 novel miRNAs were identified. Eleven known and 16 novel miRNAs were found to be differentially expressed upon infection. The results of Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses indicated that the target genes of the differentially expressed miRNAs were closely associated with immune responses and biological regulations. Additionally, over- and suppressed expression of miR-155-5p significantly enhanced and reduced the IL-2 and IL-1β expressions in RTG-2 cells induced by A. salmonicida, respectively. To our knowledge, this is the first experimental study on the miRNAs of rainbow trout upon A. salmonicida infection. The results here might lay a foundation for the further understanding of the roles of miRNAs in the immune responses during A. salmonicida infection in rainbow trout.
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Affiliation(s)
- Yongsheng Cao
- Laboratory of Fish Diseases, Department of Aquaculture, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Songfa Street No. 43, Daoli District, Harbin, 150070, China; Institute of Fisheries Science, Tibet Academy of Agricultural and Animal Husbandry Sciences, 130 Jinzhu West Road, Lhasa, 850002, Tibet, China.
| | - Di Wang
- Laboratory of Fish Diseases, Department of Aquaculture, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Songfa Street No. 43, Daoli District, Harbin, 150070, China.
| | - Shaowu Li
- Laboratory of Fish Diseases, Department of Aquaculture, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Songfa Street No. 43, Daoli District, Harbin, 150070, China.
| | - Jingzhuang Zhao
- Laboratory of Fish Diseases, Department of Aquaculture, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Songfa Street No. 43, Daoli District, Harbin, 150070, China.
| | - Liming Xu
- Laboratory of Fish Diseases, Department of Aquaculture, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Songfa Street No. 43, Daoli District, Harbin, 150070, China.
| | - Hongbai Liu
- Laboratory of Fish Diseases, Department of Aquaculture, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Songfa Street No. 43, Daoli District, Harbin, 150070, China.
| | - Tongyan Lu
- Laboratory of Fish Diseases, Department of Aquaculture, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Songfa Street No. 43, Daoli District, Harbin, 150070, China.
| | - Zhenbo Mou
- Institute of Fisheries Science, Tibet Academy of Agricultural and Animal Husbandry Sciences, 130 Jinzhu West Road, Lhasa, 850002, Tibet, China.
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