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Qin Y, Wan W, Li J, Wang Z, Yang Y, Li J, Ma H, Yu Z, Xiang Z, Zhang Y. A novel Fas ligand plays an important role in cell apoptosis of Crassostrea hongkongensis: molecular cloning, expression profiles and functional identification of ChFasL. Front Immunol 2023; 14:1267772. [PMID: 37868973 PMCID: PMC10585096 DOI: 10.3389/fimmu.2023.1267772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/06/2023] [Indexed: 10/24/2023] Open
Abstract
Background Apoptosis regulates normal development, homeostasis, immune tolerance and response to environmental stress by eliminating unwanted or diseased cells, and plays a key role in non-specific immunity of invertebrates. The exogenous pathway mediated by death receptors and death ligands is a very important pathway for cell apoptosis. Death ligands are mainly members of the tumour necrosis factor (TNF) family, of which FasL is an important member. The deep involvement of FasL in vertebrates cell apoptosis and immunity has been reported many times, but there is limited research on the FasL gene in shellfish, and its functional importance in oyster cell apoptosis and immunity remains unclear. Methods The full length of ChFasL was identified and cloned based on the genome of Crassostrea hongkongensis. Quantitative PCR was used to detect the relative expression of ChFasL in different developmental stages and tissues, as well as the changes of relative expression in hemocytes after bacterial infection. The expression position of ChFasL in HEK293T cells was also located by subcellular localization, and the effect of increased recombinant protein content on the activity of reporter genes p53 and p21 was studied by dual-fluorescence reporter gene. Finally, the changes of apoptosis rate in hemocytes after ChFasL silencing was identified by RNA interference technology. Results We identified a novel FasL gene from C. hongkongensis and named it ChFasL. We found that ChFasL has potential N-linked glycosylation site, a transmembrane domain and a TNF region, which was a typical characteristics of TNF family. ChFasL was expressed in all developmental stages of larvae and in all tissues of oysters. After stimulation by V. alginolyticus or S. haemolyticus, its relative expression in hemocytes increased significantly, suggesting that ChFasL was deeply engaged in the immune response process of C. hongkongensis to external microbial stimulation. The results of subcellular localization showed that ChFasL was mainly distributed in the cytoplasm of HEK293T cells. With the overexpression of the recombinant protein pcDNA3 1- ChFasL, the activity of p53 and p21 significantly increased, showing a positive regulatory effect. Moreover, after dsRNA successfully reduced the relative expression of ChFasL, the apoptosis rate of hemocytes was significantly lower than that the dsGFP group. Conclusion These results comprehensively confirmed the important role of ChFasL in the apoptosis process of C. hongkongensis, which provided the basis and premise for the in-depth understanding of the immune function of apoptosis in molluscs, and also contributed to the research on the pathogenic death mechanism and disease resistance breeding of marine bivalves.
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Affiliation(s)
- Yanping Qin
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Weitao Wan
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Jiangwei Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Zhongyu Wang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yue Yang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Jun Li
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Haitao Ma
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
| | - Ziniu Yu
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Zhiming Xiang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yuehuan Zhang
- Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- Hainan Provincial Key Laboratory of Tropical Marine Biology Technology, Sanya Research Institute of Marine Ecological Environment Engineering, Tropical Marine Biological Research Station in Hainan, Chinese Academy of Sciences, Sanya, China
- Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences, Guangzhou, China
- University of Chinese Academy of Sciences, Beijing, China
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Wang G, Hu J, Zhang M, Zhang Y, Li Y, Jiang H, Wang X, Zhu J, Xu S, Wang Y, Yan X. Histopathology, immunoenzyme activity and transcriptome analysis of immune response in silver pomfret infected by cryptokaryon (Cryptorchidism irritant). FISH & SHELLFISH IMMUNOLOGY 2023; 136:108731. [PMID: 37044188 DOI: 10.1016/j.fsi.2023.108731] [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: 10/14/2022] [Revised: 03/31/2023] [Accepted: 04/02/2023] [Indexed: 06/19/2023]
Abstract
Cryptorchidism irritant (CI) infection is a major problem in the culturing process of silver pomfret (Pampus argenteus), which can result in rapid and massive death. However, there is limited information available on the immune response of silver pomfret infected by CI. To address this gap, we sampled naturally infected fish and observed milky white translucent oval CI trophozoites on the gills, body surface, and fin rays. Histological analysis showed that CI infection led to vacuolation of epithelial cells and a decrease in blood cells in the gills. We also performed transcriptome profiling of the gill, kidney complex, and spleen, generating 399,616,194 clean reads that assembled into 101,228 unigenes, which were annotated based on public databases. We detected 14,369 differentially expressed genes, and selected several key immune-related genes for further validation using RT-qPCR. The Graft-versus-host pathway and Allograft rejection pathway were enriched in the gills, leading to inflammation and ulceration. CI infection activated the immune system, increasing levels of interleukin-1 beta and MHC class II antigen, and also activated innate and acquired immune genes in silver pomfret. Furthermore, we measured the activities of five immune-related enzymes (SOD, AKP, CAT, CSH and ACP), which all increased to varying degrees after CI infection. Our findings enhance our understanding of the immune response of fish to parasitic infection and may contribute to the development of strategies to prevent high mortality in CI-stimulated fish in aquaculture.
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Affiliation(s)
- Guanlin Wang
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Jiabao Hu
- School of Marine Sciences, Ningbo University, Ningbo, China; School of Civil & Environmental Engineering and Geography Science, Ningbo University, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.
| | - Man Zhang
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Youyi Zhang
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Yaya Li
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Huang Jiang
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Xiangbing Wang
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Jiajie Zhu
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Shanliang Xu
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
| | - Yajun Wang
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China.
| | - Xiaojun Yan
- School of Marine Sciences, Ningbo University, Ningbo, China; Key Laboratory of Applied Marine Biotechnology, Ningbo University, Ministry of Education, Ningbo, China; Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, China
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Liu C, Wang L, Chen X, Liu Z, Shen Y, Wu Y, Zhou Y, Li J, Cao Z, Sun Y. TroTNFSF6, a tumor necrosis factor ligand superfamily member, promotes antibacterial immune response of golden pompano, Trachinotus ovatus. FISH & SHELLFISH IMMUNOLOGY 2023; 132:108484. [PMID: 36516955 DOI: 10.1016/j.fsi.2022.108484] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 10/11/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Tumor necrosis factor ligand superfamily member 6 (TNFSF6), also known as FasL/CD95L, is essential for maintaining the body's immune homeostasis. However, the current reports on TNFSF6 in fish are relatively scarce. In the present study, we conducted functional analyses of a TNFSF6 (TroTNFSF6) from the teleost fish golden pompano (Trachinotus ovatus). TroTNFSF6 is composed of 228 amino acids and has a low similarity with other species (9.65%-58.79%). TroTNFSF6 was expressed in the 11 tissues tested and was significantly up-regulated after Edwardsiella tarda infection. In vivo, overexpression of TroTNFSF6 effectively stimulated the AKP and ACP activities, and reduced bacterial infection in fish tissues. Correspondingly, knockdown of TroTNFSF6 expression resulted in increasing bacterial dissemination and colonization in fish tissues. In vitro, recombinant TroTNFSF6 protein promoted the proliferation of T. ovatus head kidney lymphocytes (HKLs), and promoted the apoptosis of murine liver cancer cells (Hepa1-6). The results indicated that TroTNFSF6 plays an important role in the T. ovatus antibacterial immunity. These observations will facilitate the future in-depth study of teleost TNFSF6.
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Affiliation(s)
- Chunsheng Liu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China
| | - Lu Wang
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China; Freshwater Fishery Research Institute of Jiangsu Province, Nanjing, 210017, China
| | - Xiaojuan Chen
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China
| | - Zhiru Liu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China
| | - Yang Shen
- Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, Hainan, 570228, China
| | - Ying Wu
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China
| | - Yongcan Zhou
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, Hainan, 570228, China
| | - Jianlong Li
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China
| | - Zhenjie Cao
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China
| | - Yun Sun
- State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, PR China; Hainan Provincial Key Laboratory for Tropical Hydrobiology and Biotechnology, College of Marine Science, Hainan University, Haikou, Hainan, 570228, China.
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Mao MG, Xu J, Liu RT, Ye L, Wang R, Jiang JL. Fas/FasL of pacific cod mediated apoptosis. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 119:104022. [PMID: 33482239 DOI: 10.1016/j.dci.2021.104022] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 01/13/2021] [Accepted: 01/13/2021] [Indexed: 06/12/2023]
Abstract
Fas and Fas ligand (FasL) pathway plays important roles in virus defense and cell apoptosis. In our previous work, nervous necrosis virus (NNV) was discovered in Pacific cod (Gadus macrocephalus), and the Fas ligand (PcFasL) was up-regulated when NNV outbreak, however, signal transmission of Fas/FasL in fish are still unclear. In the present study, Pacific cod Fas (PcFas), PcFasL and Fas-associating protein with a novel death domain (PcFADD) were characterized. The predicted protein of PcFas, PcFasL and PcFADD includes 333 aa, 90 aa and 93 aa, separately. 3-D models of PcFas, PcFasL and PcFADD were well constructed based on reported templates, respectively, even though the sequence homology with other fish is very low. The transcript levels of PcFas increased gradually from 15 day-post hatching (dph) to 75dph. PcFas was significantly up-regulated when cod larvae had NNV symptoms at 24dph, 37dph, 46dph, 69dph, and 77dph. Subcellular localization revealed that PcFasL was located in the cytoplasm, while PcFas was mainly located in the cell membrane. Exogenous expressed PcFasL of 900 μg/mL could kill the Epithelioma papulosum cyprinid (EPC) cells by MTT test, but low concentration has no effect on the cells. qPCR analysis showed that overexpression of PcFas could significantly up-regulate the expression of genes related to Fas/FasL signaling pathway, including bcl-2, bax, and RIP3, while overexpression of PcFasL significantly up-regulate the expression of caspase-3, caspase-9, and MLKL. Overexpression of PcFas or PcFasL could induce EPC apoptosis significantly by flow cytometry, which was consistent with the results of caspase-3 mRNA level increasing. The results indicated that NNV could induce apoptosis through Fas/FasL signal pathway.
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Affiliation(s)
- Ming-Guang Mao
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Jia Xu
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Rui-Ting Liu
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Lin Ye
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Rui Wang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
| | - Jie-Lan Jiang
- Key Laboratory of Mariculture & Stock Enhancement in North China's Sea, Ministry of Agriculture and Rural Affairs, College of Fisheries and Life Sciences, Dalian Ocean University, Dalian, 116023, China.
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Fish TNF and TNF receptors. SCIENCE CHINA-LIFE SCIENCES 2020; 64:196-220. [DOI: 10.1007/s11427-020-1712-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 05/12/2020] [Indexed: 12/29/2022]
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Yamaguchi T, Takizawa F, Furihata M, Soto-Lampe V, Dijkstra JM, Fischer U. Teleost cytotoxic T cells. FISH & SHELLFISH IMMUNOLOGY 2019; 95:422-439. [PMID: 31669897 DOI: 10.1016/j.fsi.2019.10.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 10/21/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
Cell-mediated cytotoxicity is one of the major mechanisms by which vertebrates control intracellular pathogens. Two cell types are the main players in this immune response, natural killer (NK) cells and cytotoxic T lymphocytes (CTL). While NK cells recognize altered target cells in a relatively unspecific manner CTLs use their T cell receptor to identify pathogen-specific peptides that are presented by major histocompatibility (MHC) class I molecules on the surface of infected cells. However, several other signals are needed to regulate cell-mediated cytotoxicity involving a complex network of cytokine- and ligand-receptor interactions. Since the first description of MHC class I molecules in teleosts during the early 90s of the last century a remarkable amount of information on teleost immune responses has been published. The corresponding studies describe teleost cells and molecules that are involved in CTL responses of higher vertebrates. These studies are backed by functional investigations on the killing activity of CTLs in a few teleost species. The present knowledge on teleost CTLs still leaves considerable room for further investigations on the mechanisms by which CTLs act. Nevertheless the information on teleost CTLs and their regulation might already be useful for the control of fish diseases by designing efficient vaccines against such diseases where CTL responses are known to be decisive for the elimination of the corresponding pathogen. This review summarizes the present knowledge on CTL regulation and functions in teleosts. In a special chapter, the role of CTLs in vaccination is discussed.
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Affiliation(s)
- Takuya Yamaguchi
- Federal Research Institute for Animal Health, Friedrich-Loeffler-Institut, 17493, Greifswald-Insel Riems, Germany
| | - Fumio Takizawa
- Laboratory of Marine Biotechnology, Faculty of Marine Science and Technology, Fukui Prefectural University, Obama, Fukui, 917-0003, Japan
| | - Mitsuru Furihata
- Nagano Prefectural Fisheries Experimental Station, 2871 Akashina-nakagawate, Azumino-shi, Nagano-ken, 399-7102, Japan
| | - Veronica Soto-Lampe
- Federal Research Institute for Animal Health, Friedrich-Loeffler-Institut, 17493, Greifswald-Insel Riems, Germany
| | - Johannes M Dijkstra
- Institute for Comprehensive Medical Science, Fujita Health University, Toyoake, Aichi, 470-1192, Japan
| | - Uwe Fischer
- Federal Research Institute for Animal Health, Friedrich-Loeffler-Institut, 17493, Greifswald-Insel Riems, Germany.
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Smith NC, Rise ML, Christian SL. A Comparison of the Innate and Adaptive Immune Systems in Cartilaginous Fish, Ray-Finned Fish, and Lobe-Finned Fish. Front Immunol 2019; 10:2292. [PMID: 31649660 PMCID: PMC6795676 DOI: 10.3389/fimmu.2019.02292] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/10/2019] [Indexed: 12/17/2022] Open
Abstract
The immune system is composed of two subsystems-the innate immune system and the adaptive immune system. The innate immune system is the first to respond to pathogens and does not retain memory of previous responses. Innate immune responses are evolutionarily older than adaptive responses and elements of innate immunity can be found in all multicellular organisms. If a pathogen persists, the adaptive immune system will engage the pathogen with specificity and memory. Several components of the adaptive system including immunoglobulins (Igs), T cell receptors (TCR), and major histocompatibility complex (MHC), are assumed to have arisen in the first jawed vertebrates-the Gnathostomata. This review will discuss and compare components of both the innate and adaptive immune systems in Gnathostomes, particularly in Chondrichthyes (cartilaginous fish) and in Osteichthyes [bony fish: the Actinopterygii (ray-finned fish) and the Sarcopterygii (lobe-finned fish)]. While many elements of both the innate and adaptive immune systems are conserved within these species and with higher level vertebrates, some elements have marked differences. Components of the innate immune system covered here include physical barriers, such as the skin and gastrointestinal tract, cellular components, such as pattern recognition receptors and immune cells including macrophages and neutrophils, and humoral components, such as the complement system. Components of the adaptive system covered include the fundamental cells and molecules of adaptive immunity: B lymphocytes (B cells), T lymphocytes (T cells), immunoglobulins (Igs), and major histocompatibility complex (MHC). Comparative studies in fish such as those discussed here are essential for developing a comprehensive understanding of the evolution of the immune system.
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Affiliation(s)
- Nicole C Smith
- Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Matthew L Rise
- Department of Ocean Sciences, Memorial University of Newfoundland, St. John's, NL, Canada
| | - Sherri L Christian
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, NL, Canada
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Zhao Z, Yu X, Jia J, Yang G, Sun C, Li W. miR-181b-5p May Regulate Muscle Growth in Tilapia by Targeting Myostatin b. Front Endocrinol (Lausanne) 2019; 10:812. [PMID: 31849840 PMCID: PMC6902659 DOI: 10.3389/fendo.2019.00812] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 11/06/2019] [Indexed: 12/20/2022] Open
Abstract
Background: Myostatin (Mstn), a member of the TGF-β superfamily, is a negative regulator of skeletal muscle mass in mammals. Precise regulation of Mstn expression is important for somite growth in fish. MicroRNA (miRNA), a type of small non-coding RNA, regulates gene expression at the post-transcriptional level and participates in various physiological functions. A growing amount of evidence has emphasized the importance of miRNA in the development of skeletal muscle. Aims: This study aims to study how miRNAs regulate myostatin b (mstnb) post-transcriptionally in tilapia. Methods/Results: Mstnb 3' UTR sequences were obtained, and the results of tissue distribution showed that mstnb was expressed in several tissues, including brain, white muscle, gut, and adipose tissue. A total of 1,992 miRNAs were predicted to target mstnb in tilapia using bioinformatics, and a dual-luciferase reporter experiment confirmed that miR-181a/b-5p, miR-30-3p, miR-200a, and miR-27a were the target miRNAs of mstnb. Mutagenesis of the miR-181b-5p binding sites of mstnb significantly increased the luciferase signal compared to the wild-type mstnb. In tilapia primary muscle cells, overexpression of miR-181b-5p led to the downregulation of MSTNb expression, and the inhibitory effect of MSTNb on the downstream genes was dismissed, while inhibition of miR-181b-5p could reverse these phenomena. Conclusion: Taken together, our results suggested that miR-181b-5p could promote the growth of skeletal muscle by decreasing the MSTNb protein level in tilapia.
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Tafalla C, Granja AG. Novel Insights on the Regulation of B Cell Functionality by Members of the Tumor Necrosis Factor Superfamily in Jawed Fish. Front Immunol 2018; 9:1285. [PMID: 29930556 PMCID: PMC6001812 DOI: 10.3389/fimmu.2018.01285] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 05/22/2018] [Indexed: 12/12/2022] Open
Abstract
Most ligands and receptors from the tumor necrosis factor (TNF) superfamily play very important roles in the immune system. In particular, many of these molecules are essential in the regulation of B cell biology and B cell-mediated immune responses. Hence, in mammals, it is known that many TNF family members play a key role on B cell development, maturation, homeostasis, activation, and differentiation, also influencing the ability of B cells to present antigens or act as regulators of immune responses. Evolutionarily, jawed fish (including cartilaginous and bony fish) constitute the first animal group in which an adaptive immune response based on B cells and immunoglobulins is present. However, until recently, not much was known about the expression of TNF ligands and receptors in these species. The sequences of many members of the TNF superfamily have been recently identified in different species of jawed fish, thus allowing posterior analysis on the role that these ligands and receptors have on B cell functionality. In this review, we summarize the current knowledge on the impact that the TNF family members have in different aspects of B cell functionality in fish, also providing an in depth comparison with functional aspects of TNF members in mammals, that will permit a further understanding of how B cell functionality is regulated in these distant animal groups.
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Affiliation(s)
| | - Aitor G Granja
- Animal Health Research Center (CISA-INIA), Madrid, Spain
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Wang J, Wu J, Yi L, Hou Z, Li W. Pathological analysis, detection of antigens, FasL expression analysis and leucocytes survival analysis in tilapia (Oreochromis niloticus) after infection with green fluorescent protein labeled Streptococcus agalactiae. FISH & SHELLFISH IMMUNOLOGY 2017; 62:86-95. [PMID: 28063953 DOI: 10.1016/j.fsi.2017.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Revised: 01/02/2017] [Accepted: 01/03/2017] [Indexed: 06/06/2023]
Abstract
The pathogenesis of Streptococcus agalactiae infection in tilapia has not been fully described. To understand this, we investigated the clinic-pathological features of acute experimental septicemia in tilapia (Oreochromis niloticus) after receiving an intra-peritoneal injection with S. agalactiae THN-1901GFP. Immunohistochemistry and sections of pathological tissues were used to estimate the level of damage in the head-kidney, liver, spleen and trunk-kidney. The expression of FasL was analyzed by western blotting in these samples based on their damage levels. Leucocytes were isolated from the head-kidney and incubated with S. agalactiae THN-1901GFP. Then, phagocytosis, programmed cell death and the expression of FasL were analyzed. The infected tissues showed varying degrees of necrosis and histolysis. The serous membrane of the intestine was dissolved by S. agalactiae THN-1901GFP. Antigens of S. agalactiae THN-1901GFP accumulated in different parts of the infected organs. In the head-kidney and spleen, the expression of FasL was up-regulated in parallel with increased tissue damage. After being incubated with S. agalactiae THN-1901GFP, the phagocytic capacity and ability were both very high and the expression of FasL remained high in leucocytes. S. agalactiae THN-1901GFP was able to survive for a long period of time after being engulfed by phagocytic cells. These findings offer insight into the pathogenesis of S. agalactiae infection in tilapia.
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Affiliation(s)
- Jingyuan Wang
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Jinying Wu
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China.
| | - Liyuan Yi
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Zengxin Hou
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Wensheng Li
- State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China
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He Q, Zhu L, Shen Y, Lin X, Xiao K. Evaluation of the effects of frozen storage on the microstructure of tilapia (Perciformes: Cichlidae) through fractal dimension method. Lebensm Wiss Technol 2015. [DOI: 10.1016/j.lwt.2015.07.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Cheng CH, Yang FF, Liao SA, Miao YT, Ye CX, Wang AL, Liu JC, Liu LW. Identification, characterization and functional analysis of anti-apoptotic protein BCL-2-like gene from pufferfish, Takifugu obscurus, responding to bacterial challenge. FISH PHYSIOLOGY AND BIOCHEMISTRY 2015; 41:1053-1064. [PMID: 25963943 DOI: 10.1007/s10695-015-0068-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Accepted: 05/05/2015] [Indexed: 06/04/2023]
Abstract
Apoptosis plays a crucial role in many biological processes, including development, cellular homeostasis and immune responses. The BCL-2 family is a key regulator of the mitochondrial response to apoptotic signals in the intrinsic pathway. In this study, we identified and characterized the cDNA and expression pattern of pufferfish BCL-2 (PfBCL-2). The full-length cDNA of PfBCL-2 was 1412 bp with an open reading frame of 657 bp encoding a putative protein of 219 amino acids (Accession no: KP898414). The calculated molecular mass of the PfBCL-2 was 24.2 kDa with a predicted isoelectric point of 5.27. The deduced PfBCL-2 protein exhibited four highly conserved BCL-2 homology domains, suggesting that PfBCL-2 may play a similar role in the apoptotic-signaling pathway as in other species. Real-time PCR results showed that PfBCL-2 transcript was expressed in a wide range of tissues but exhibited the greatest level of expression in blood. Transcriptional responses of PfBCL-2 exhibited different spatial and temporal expression profiles in liver and blood after bacterial infection. PfBcl-2 transcript was significantly up-regulated in liver at 6, 12, 24 and 48 h (with maximum induction at 48 h) and was up-regulated in blood at 3, 6, 12 and 24 h (with maximum induction at 12 h). Meanwhile, recombinant PfBCL-2 fused with His6 tag was efficiently expressed in Escherichia coli BL21 (DE3) and purified using Ni-nitrilotriacetic acid resin. Western blot analysis indicated that its protein level appeared to be elevated during the initial bacterial infection. These results suggest that PfBCL-2 plays important roles in immune responses against bacteria challenge.
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Affiliation(s)
- Chang-Hong Cheng
- Key Laboratory of Ecology and Environmental Science of Guangdong Higher Education Institutes, Guangdong Provincial Key Laboratory for Healthy and Safe Aquaculture, School of Life Science, South China Normal University, Guangzhou, 510631, People's Republic of China,
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13
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Zhan XL, Ma TY, Wu JY, Yi LY, Wang JY, Gao XK, Li WS. Cloning and primary immunological study of TGF-β1 and its receptors TβR I /TβR II in tilapia(Oreochromis niloticus). DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2015; 51:134-140. [PMID: 25819083 DOI: 10.1016/j.dci.2015.03.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 03/18/2015] [Accepted: 03/18/2015] [Indexed: 06/04/2023]
Abstract
The transforming growth factor β (TGF-β) superfamily plays critical roles in tumor suppression, cell proliferation and differentiation, tissue morphogenesis, lineage determination, cell migration and apoptosis. Recently, TGF-β1, one important member of TGF-β superfamily, is suggested as an immune regulator in the teleost. In this study, we cloned the cDNAs of TGF-β1 and its receptors, TβR I and TβR II (including three isoforms) from tilapia (Genbank accession numbers: KP754231- KP754235). A tissue distribution profile analysis indicated that TGF-β1 was highly expressed in the head kidney, gill, spleen, kidney and PBLs (peripheral blood leukocytes); TβR I only showed considerable expression in the liver; and TβR II-2 was highly expressed in the kidney, gill, liver, head kidney and heart. We determined that the mRNA expressions of TGF-β and TβR I /TβR II-2 were significantly increased in tilapia head kidney and spleen leukocytes by the stimulation of Lipopolysaccharide (LPS) or Poly I: C. We also examined their expressions in the spleen and head kidney of tilapia after IP injection of streptococcus agalactiae. The results showed that the mRNA expressions of these three genes all increased in the head kidney as early as 6 h post infection, and in the spleen 3 d post infection. In addition, the protein level of TGF-β1 was also up-regulated in the head kidney and the spleen after infection. Taken together, our data indicate that the TGF-β1-TβR I /TβR II-2 system functions potentially in tilapia immune system.
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Affiliation(s)
- Xu-liang Zhan
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Tai-yang Ma
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Jin-ying Wu
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
| | - Li-yuan Yi
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Jing-yuan Wang
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Xiao-ke Gao
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
| | - Wen-sheng Li
- State Key Laboratory Biocontrol, Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
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