1
|
Yang Y, Yan C, Li A, Qiu J, Yan W, Dang H. Effects of the plastic additive 2,4-di-tert-butylphenol on intestinal microbiota of zebrafish. JOURNAL OF HAZARDOUS MATERIALS 2024; 469:133987. [PMID: 38461668 DOI: 10.1016/j.jhazmat.2024.133987] [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: 12/22/2023] [Revised: 02/20/2024] [Accepted: 03/06/2024] [Indexed: 03/12/2024]
Abstract
Plastic additives such as the antioxidant 2,4-di-tert-butylphenol (2,4-DTBP) have been widely detected in aquatic environments, over a wide range of concentrations reaching 300 μg/L in surface water, potentially threatening the health of aquatic organisms and ecosystems. However, knowledge of the specific effects of 2,4-DTBP on aquatic vertebrates is still limited. In this study, adult zebrafish were exposed to different concentrations of 2,4-DTBP (0, 0.01, 0.1 and 1.0 mg/L) for 21 days in the laboratory. The amplicon sequencing results indicated that the diversity and composition of the zebrafish gut microbiota were significantly changed by 2,4-DTBP, with a shift in the dominant flora to more pathogenic genera. Exposure to 2,4-DTBP at 0.1 and 1.0 mg/L significantly increased the body weight and length of zebrafish, suggesting a biological stress response. Structural assembly defects were also observed in the intestinal tissues of zebrafish exposed to 2,4-DTBP, including autolysis of intestinal villi, adhesions and epithelial detachment of intestinal villi, as well as inflammation. The transcriptional expression of some genes showed that 2,4-DTBP adversely affected protein digestion and absorption, glucose metabolism and lipid metabolism. These results are consistent with the PICRUSt2 functional prediction analysis of intestinal microbiota of zebrafish exposed to 2,4-DTBP. This study improves our understanding of the effects of 2,4-DTBP on the health of aquatic vertebrates and ecosystems.
Collapse
Affiliation(s)
- Yongmeng Yang
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Chen Yan
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Aifeng Li
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China; Key Laboratory of Marine Environment and Ecology, Ocean University of China, Ministry of Education, Qingdao 266100, China.
| | - Jiangbing Qiu
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China; Key Laboratory of Marine Environment and Ecology, Ocean University of China, Ministry of Education, Qingdao 266100, China
| | - Wenhui Yan
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| | - Hui Dang
- College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, China
| |
Collapse
|
2
|
Sun X, Bao N, Rui C, Xue Y, Fang Q, Zheng T, Lin Z, Liu X, Wang X. Identification of large yellow croakers (Larimichthys crocea) scavenger receptor genes: Involvement in immune response to Pseudomonas plecoglossicida infection and hypoxia-exposure experiments. FISH & SHELLFISH IMMUNOLOGY 2024; 144:109307. [PMID: 38122953 DOI: 10.1016/j.fsi.2023.109307] [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: 11/30/2023] [Revised: 12/13/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Scavenger receptors (SRs) are pattern recognition receptors involved in the innate immune defense against pathogen infection in fish. However, there has not been much research done on teleosts. In this study, 18 members of the SR gene family were found in large yellow croaker. The identification of the SR gene family showed that the protein length of SR members in large yellow croaker were quite different, and most SR genes were distributed in nuclear and endoplasmic. The evolutionary relationship, exon/intron structure and motif analysis revealed that members of the SR gene family were highly conserved. The results of the expression profiles after Pseudomonas plecoglossicida infection and hypoxia-exposure demonstrated that SR members were involved in inflammatory reactions. Especially, COLEC12 and SCARF1 exhibited substantial changes in response to both P. plecoglossicida and hypoxia stress, indicating their possible immunological functions. The result of this study revealed that SR genes played a vital part in the innate immune response of large yellow croaker, and would give important details for a deeper comprehension of the SR gene family's regulation mechanism under various conditions in large yellow croaker.
Collapse
Affiliation(s)
- Xuanyang Sun
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Ning Bao
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Chen Rui
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Yadong Xue
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Qian Fang
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Tianyu Zheng
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Ziyang Lin
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China.
| | - Xiumei Liu
- College of Life Sciences, Yantai University, Yantai, China.
| | - Xubo Wang
- Key Laboratory of Aquacultural Biotechnology (Ningbo University), Ministry of Education, Ningbo, Zhejiang, China; National Engineering Research Laboratory of marine Biotechnology and Engineering, Ningbo University, Ningbo, Zhejiang, China; Collaborative Innovation Center for Zhejiang Marine High-efficiency and Healthy Aquaculture, Ningbo University, Ningbo, Zhejiang, China; Key Laboratory of Green Mariculture (Co-construction By Ministry and Province), Ministry of Agriculture and Rural, Ningbo University, China.
| |
Collapse
|
3
|
Xu H, Wang W, Ouyang H, Zhang X, Miao X, Feng J, Tao Y, Li Y. Expression profiling and antibacterial analysis of cd36 in mandarin fish, Siniperca chuatsi. FISH & SHELLFISH IMMUNOLOGY 2023:108901. [PMID: 37321429 DOI: 10.1016/j.fsi.2023.108901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/12/2023] [Accepted: 06/12/2023] [Indexed: 06/17/2023]
Abstract
Cd36 is classified as a class B scavenger receptor and has also been identified as a pattern recognition receptor. In this study, we investigated the genomic structure and molecular characteristics of cd36 in mandarin fish (Siniperca chuatsi), examined its tissue distribution, and evaluated its antibacterial activity. Genomic structure analysis showed that Sccd36 consists of 12 exons and 11 introns. Sequencing analysis confirmed that the open reading frame of Sccd36 contains 1410 bp, encoding 469 amino acids. Sccd36 is deeply conserved with other vertebrates in terms of genomic structure, gene loci and molecular evolution, and the feature of two transmembrane was observed in ScCd36 through structural prediction. Sccd36 was constitutively expressed in all tissues tested, with the strongest expression in the intestine, followed by the heart and the kidney. Dramatic changes of Sccd36 mRNA were detected in mucosal tissues, including the intestine, gill and skin, when stimulated by the microbial ligands lipopolysaccharide and lipoteichoic acid. In addition, ScCd36 was identified as having strong binding ability to microbial ligands and antibacterial activity against the gram-negative bacteria Aeromonas hydrophila and the gram-positive bacteria Streptococcus lactis. Furthermore, we verified that the genetic ablation of cd36 impaired the resistance of fish to bacterial challenge by using zebrafish cd36 knockout line. In conclusion, our findings suggest that ScCd36 plays a crucial role in the innate immune response of mandarin fish against bacterial infections. This also sets the stage for further exploration into the antibacterial function of Cd36 in lower vertebrate species.
Collapse
Affiliation(s)
- Hao Xu
- Fisheries and Aquaculture Biotechnology Laboratory, College of Fisheries, Southwest University, Chongqing, 400715, China; Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University, Chongqing, 400715, China
| | - Wenbo Wang
- Fisheries and Aquaculture Biotechnology Laboratory, College of Fisheries, Southwest University, Chongqing, 400715, China
| | - Huaxin Ouyang
- Fisheries and Aquaculture Biotechnology Laboratory, College of Fisheries, Southwest University, Chongqing, 400715, China
| | - Xiaoxue Zhang
- Fisheries and Aquaculture Biotechnology Laboratory, College of Fisheries, Southwest University, Chongqing, 400715, China
| | - Xiaomin Miao
- Fisheries and Aquaculture Biotechnology Laboratory, College of Fisheries, Southwest University, Chongqing, 400715, China; Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University, Chongqing, 400715, China
| | - Jingyun Feng
- Fisheries and Aquaculture Biotechnology Laboratory, College of Fisheries, Southwest University, Chongqing, 400715, China; Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University, Chongqing, 400715, China
| | - Yixi Tao
- Fisheries and Aquaculture Biotechnology Laboratory, College of Fisheries, Southwest University, Chongqing, 400715, China; Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University, Chongqing, 400715, China
| | - Yun Li
- Fisheries and Aquaculture Biotechnology Laboratory, College of Fisheries, Southwest University, Chongqing, 400715, China; Key Laboratory of Freshwater Fish Reproduction and Development (Ministry of Education), Key Laboratory of Aquatic Science of Chongqing, Southwest University, Chongqing, 400715, China.
| |
Collapse
|
4
|
Molecular characterization of four innate immune genes in Tor putitora and their comparative transcriptional abundance during wild- and captive-bred ontogenetic developmental stages. FISH AND SHELLFISH IMMUNOLOGY REPORTS 2022; 3:100058. [DOI: 10.1016/j.fsirep.2022.100058] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/10/2022] [Accepted: 06/10/2022] [Indexed: 11/23/2022] Open
|
5
|
Zhou J, Zhou JF, Wang Y, Feng GP, Fang WH, Kang W, Ma LB, Li XC. SpSR-B2 functions as a potential pattern recognition receptor involved in antiviral and antibacterial immune responses of mud crab Scylla paramamosain. Int J Biol Macromol 2021; 193:2173-2182. [PMID: 34780895 DOI: 10.1016/j.ijbiomac.2021.11.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 11/06/2021] [Accepted: 11/07/2021] [Indexed: 10/19/2022]
Abstract
Although class B scavenger receptors (SR-Bs) in mammals are multifunctional molecules, the functions of SR-Bs in invertebrates remain largely unknown. In this study, we characterized an SR-B homolog, namely SpSR-B2, from Scylla paramamosain. SpSR-B2 shared high similarity with mammalian SR-Bs, and exhibited specific binding activity to ac-LDL, indicating that it may be a new member of SR-B class in invertebrates. SpSR-B2 was upregulated after challenge with white spot syndrome virus (WSSV) or bacteria. Binding assays showed that SpSR-B2 specifically interacted with WSSV envelope protein VP24. Besides, SpSR-B2 could bind to all tested bacterial cells and agglutinate these bacteria. SpSR-B2 also exhibited a strong binding activity to LPS but weak binding activities to other tested polysaccharides. These findings indicated that SpSR-B2 was a potential recognition molecule for viral protein VP24 and bacterial LPS. Knockdown of SpSR-B2 resulted in dramatically decreased expressions of certain antimicrobial peptides (AMPs), and overexpression of SpSR-B2 led to the increased expression of the AMP of SpALF2, suggesting that SpSR-B2 could regulate the expression of AMPs. Taken together, this study revealed that SpSR-B2 functioned as a potential pattern recognition receptor participating in antiviral and antibacterial immunity, and provided new insights into the immune functions of invertebrate SR-Bs.
Collapse
Affiliation(s)
- Jian Zhou
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Jun-Fang Zhou
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Yue Wang
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Guang-Peng Feng
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Wen-Hong Fang
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Wei Kang
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Ling-Bo Ma
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China
| | - Xin-Cang Li
- Key Laboratory of East China Sea Fishery Resources Exploitation, Ministry of Agriculture and Rural affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, 200090, China.
| |
Collapse
|
6
|
Li C, Ge X, Su B, Fu Q, Wang B, Liu X, Ren Y, Song L, Yang N. Characterization of class B scavenger receptor type 1 (SRB1) in turbot (Scophthalmus maximus L.). FISH & SHELLFISH IMMUNOLOGY 2020; 100:358-367. [PMID: 32169665 DOI: 10.1016/j.fsi.2020.03.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 03/05/2020] [Accepted: 03/06/2020] [Indexed: 06/10/2023]
Abstract
Class B scavenger receptor type 1 (SRB1) serves as a high-density lipoprotein (HDL) receptor essential for HDL metabolism, and plays vital roles in innate immunity. In this study, the turbot (Scophthalmus maximus) SRB1 was cloned and characterized. The gene structure consists of a coding region of 1,527 bp nucleotides dividing into 13 exons and 12 introns. Such genome structure is highly conserved among teleost fishes. The deduced SRB1 encodes 508 amino acids that mainly has a CD36 transmembrane domain. Tissue distribution of SRB1 showed the lowest expression in liver, while the highest expression was found in intestine. Significantly down-regulation pattern of SmSRB1 expression in intestine was shared after infection with Vibrio anguillarum and Streptococcus iniae. Brach and site models in CODEML program showed that SmSRB1 underwent a conservative evolutionary and three potential positive selected sites 470K, 496E, and 501Y were detected, which requires further investigation and confirmation using base-editing technologies. Subcellular localization demonstrated that turbot SRB1 was distributed in the membrane and cytoplasm. rSmSRB1 showed binding ability in vitro to bacteria, LPS, PGN, LTA and virus. Protein-protein interaction network agrees the function of SRB1 as lipoprotein receptor. Our results indicated SmSRB1 might act as co-receptors to TLRs and NLRs to modulate the immune response to pathogens. Further studies should pay attention to evaluate the specific co-receptor for SRB1 in recognition of different pathogens and selective mechanisms involved.
Collapse
Affiliation(s)
- Chao Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xuefeng Ge
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Baofeng Su
- School of Fisheries, Aquaculture and Aquatic Sciences, Auburn University, Auburn, AL, 36849, USA
| | - Qiang Fu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Beibei Wang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Xiaoli Liu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Yichao Ren
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China
| | - Lin Song
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao, 266011, China
| | - Ning Yang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao, 266109, China.
| |
Collapse
|
7
|
Ning X, Sun L. Gene network analysis reveals a core set of genes involved in the immune response of Japanese flounder (Paralichthys olivaceus) against Vibrio anguillarum infection. FISH & SHELLFISH IMMUNOLOGY 2020; 98:800-809. [PMID: 31743762 DOI: 10.1016/j.fsi.2019.11.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 09/30/2019] [Accepted: 11/14/2019] [Indexed: 06/10/2023]
Abstract
Japanese flounder (Paralichthys olivaceus) is one of the most economically important marine fish cultured in north Asia. Vibrio anguillarum is a severe bacterial pathogen to Japanese flounder and many other aquaculture species. In order to understand the immune response of flounder during bacterial infection, we systematically examined the transcriptome profiles of flounder spleen at three time points after V. anguillarum challenge. More than one billion high quality reads were obtained, approximately 80.70% of which were successfully mapped to the reference genome of flounder. A total of 6060, 4688 and 4235 differentially expressed genes (DEGs) were captured at 6, 12 and 24-h post-infection, respectively. The DEGs exhibited dynamic changes in expression and were assigned into four different profiles based on expression trend. GO and KEGG analysis showed that the DEGs were enriched in various immune-related terms, including response to stimulation, immune system and pathways of cytokine-cytokine receptor interaction, Jak-STAT signaling and Toll-like receptor signaling. Furthermore, a network of highly interactive DEGs involved in 11 immune-related pathways was detected by utilizing the weighted co-expressing network analysis (WGCNA). Accordingly, 26 hub genes were discovered that constituted an elaborate immune regulatory network and functioned mainly in pathogen recognition, antigen processing, and molecular signaling. The results of this study provided the first systematical transcriptome profile of flounder in association with V. anguillarum infection and can serve as a valuable resource of target genes for future studies on the molecular mechanisms underlying the immune defense of flounder against bacterial infection.
Collapse
Affiliation(s)
- Xianhui Ning
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Li Sun
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
| |
Collapse
|
8
|
Wang X, Zhang Y, Zhang R, Zhang J. The diversity of pattern recognition receptors (PRRs) involved with insect defense against pathogens. CURRENT OPINION IN INSECT SCIENCE 2019; 33:105-110. [PMID: 31358188 DOI: 10.1016/j.cois.2019.05.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 05/04/2019] [Accepted: 05/06/2019] [Indexed: 05/23/2023]
Abstract
Through evolution, selection pressures cause both insects and the pathogens attacking them to adapt so that they will both survive and this has been called the co-evolutionary 'arms race'. Insects expand their repertoire of pattern recognition receptors (PRRs), a fundamental and core component of their immune systems, to adapt to the constantly changing and unpredictable diversity of pathogens. In this review, we discuss the diversity of PRRs based on studies conducted in recent years. The strategies associated with PRR diversity summarized here are genetic evolution, isoform diversity based on alternative splicing, 'part-time' PRRs, PRRs with opsonin function, and regulation of complex signaling pathways. Taken together, these data indicate that the function of PRRs in insect immunity is far more complex and possesses more features than originally thought.
Collapse
Affiliation(s)
- Xialu Wang
- School of Medical Devices, Shenyang Pharmaceutical University, China
| | - Yueqi Zhang
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, China
| | - Rong Zhang
- School of Life Science and Bio-Pharmaceutics, Shenyang Pharmaceutical University, China.
| | - Jinghai Zhang
- School of Medical Devices, Shenyang Pharmaceutical University, China.
| |
Collapse
|
9
|
Li C, Tian M, Zhang L, Fu Q, Song L, Yang N. Expression profiling and functional characterization of CD36 in turbot (Scophthalmus maximus L.). FISH & SHELLFISH IMMUNOLOGY 2018; 81:485-492. [PMID: 30064021 DOI: 10.1016/j.fsi.2018.07.056] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 07/21/2018] [Accepted: 07/28/2018] [Indexed: 06/08/2023]
Abstract
CD36 is a scavenger receptor, a type of membrane-bound receptors that characterized by recognizing a variety of ligands including endogenous proteins and pathogens. Here, we characterized CD36 gene in turbot, and its expression patterns in mucosal barriers following different bacterial infection, as well as microbial ligand binding ability and bacteriostatic activities. In current study, one SmCD36 gene was captured with a 1407 bp open reading frame (ORF). In multiple species comparison, SmCD36 showed the highest similarity and identity to Cynoglossus semilaevis. In the phylogenetic analysis, SmCD36 showed the closest relationship to C. semilaevis, followed by Takifugu rubripes. The genomic structure analysis showed that CD36 had 12 exons with almost the same length in vertebrate species, indicating the conservation of CD36 during evolution. The syntenic analysis revealed that CD36 located between GNAI1 and SEMA3C genes across all the selected species, which suggested the synteny encompassing CD36 region during vertebrate evolution. Subsequently, SmCD36 was expressed in all the examined turbot tissues, with the highest expression level in intestine. In addition, SmCD36 was significantly up-regulated in intestine following both Gram-negative bacteria Vibrio anguillarum, and Gram-positive bacteria Streptococcus iniae immersion challenge. Finally, the rSmCD36 showed strong binding ability to all the examined microbial ligands and significant inhibition effect on Staphylococcus aureusrequires. Taken together, our results suggested SmCD36 involved in fish innate immune responses to bacterial infection. However, the knowledge of CD36 are still limited in teleost species, further studies should be carried out to better characterize its detailed roles in teleost mucosal immunity.
Collapse
Affiliation(s)
- Chao Li
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Mengyu Tian
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Lu Zhang
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Qiang Fu
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
| | - Lin Song
- College of Marine Science and Biological Engineering, Qingdao University of Science & Technology, Qingdao, 266011, People's Republic of China
| | - Ning Yang
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China.
| |
Collapse
|
10
|
Wei X, Zhao T, Ai K, Li H, Jiang X, Li C, Wang Q, Yang J, Zhang R, Yang J. Role of scavenger receptor from Octopus ocellatus as a co-receptor of Toll-like receptor in initiation of TLR-NF-κB signaling during anti-bacterial response. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 84:14-27. [PMID: 29409792 DOI: 10.1016/j.dci.2018.01.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Revised: 01/30/2018] [Accepted: 01/31/2018] [Indexed: 06/07/2023]
Abstract
Scavenger receptors are crucial for innate immunity owing to their prominent role in clearance of harmful endogenous factors, immune recognition, and more importantly, as co-receptors of Toll-like receptors (TLRs) to initiate downstream responses. At present, invertebrate scavenger receptors, especially their role in immune mechanisms, are largely unknown. We report here that scavenger receptors form a diverse superfamily in Octopus ocellatus, including at least five different members with distinct tissue expression patterns. Two members, OoSR-B and OoSR-I, are grouped into class B and I scavenger receptors, respectively. OoSR-B and OoSR-I are located on the hemocyte membrane, and both recombinant scavenger receptors could serve as pattern recognition receptors to bind a broad range of pathogen-associated molecular patterns. Although OoSR-B and OoSR-I expression was induced by bacterial stimulation, only OoSR-B promoted hemocyte phagocytosis. Moreover, OoSR-B, but not OoSR-I, could act as a co-receptor of TLR to activate TLR-NF-κB signaling and initiate TNF-α production during anti-bacterial response. As the first report on an invertebrate scavenger receptor acting as a co-receptor of TLR, our study reveals the immune mechanism mediated by scavenger receptors in O. ocellatus, and provides new insight into the evolution of this important receptor family.
Collapse
Affiliation(s)
- Xiumei Wei
- Laboratory of Aquatic Comparative Immunology, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Tianyu Zhao
- Laboratory of Aquatic Comparative Immunology, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Kete Ai
- Laboratory of Aquatic Comparative Immunology, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Huiying Li
- Laboratory of Aquatic Comparative Immunology, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Xu Jiang
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
| | - Cheng Li
- Laboratory of Aquatic Comparative Immunology, School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Qianqian Wang
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
| | - Jianmin Yang
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
| | - Ranran Zhang
- Shandong Marine Resource and Environment Research Institute, Yantai 264006, China
| | - Jialong Yang
- Laboratory of Aquatic Comparative Immunology, School of Life Sciences, East China Normal University, Shanghai 200241, China.
| |
Collapse
|
11
|
Liu X, Li Z, Wang B, Zhu H, Liu Y, Qi J, Zhang Q. GATA4 is a transcriptional regulator of R-spondin1 in Japanese flounder (Paralichthys olivaceus). Gene 2018; 648:68-75. [PMID: 29331483 DOI: 10.1016/j.gene.2018.01.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 12/21/2017] [Accepted: 01/09/2018] [Indexed: 10/18/2022]
Abstract
GATA4 is a well-known transcription factor of the GATA family implicated in regulation of sex determination and gonadal development in mammals. In this study, we cloned the full-length cDNA of Paralichthys olivaceus gata4 (Po-gata4). Phylogenetic, gene structure, and synteny analysis showed that Po-GATA4 is homologous to GATA4 of teleost and tetrapod. Po-gata4 transcripts were detected in Sertoli cells, spermatogonia, oogonia and oocytes, with higher transcript levels overall in the testis than the ovary. The promoter region of P. olivaceus R-spondin1was found to contain a GATA4-binding motif. Results of CBA (cleaved amplified polymorphic sequence-based binding assay) indicated that GATA4 could indeed bind to the promoter sequence of R-spondin1. Moreover, human GATA4 recombinant protein could upregulate R-spondin1 in P. olivaceus ovary cells and FBCs (flounder brain cell line). In FBCs, overexpression of Po-gata4 resulted in elevated transcript levels of R-spondin1. Taken together, our results indicate that Po-GATA4 is involved in gonadal development by regulating R-spondin1 expression.
Collapse
Affiliation(s)
- Xiumei Liu
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, 266003 Qingdao, Shandong, China
| | - Zan Li
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, 266003 Qingdao, Shandong, China
| | - Bo Wang
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, 266003 Qingdao, Shandong, China
| | - He Zhu
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, 266003 Qingdao, Shandong, China
| | - Yuezhong Liu
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, 266003 Qingdao, Shandong, China
| | - Jie Qi
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, 266003 Qingdao, Shandong, China.
| | - Quanqi Zhang
- Key Laboratory of Marine Genetics and Breeding (Ocean University of China), Ministry of Education, 266003 Qingdao, Shandong, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, PR China
| |
Collapse
|
12
|
Zhang L, Nie L, Cai SY, Chen J, Chen J. Role of a macrophage receptor with collagenous structure (MARCO) in regulating monocyte/macrophage functions in ayu, Plecoglossus altivelis. FISH & SHELLFISH IMMUNOLOGY 2018; 74:141-151. [PMID: 29305330 DOI: 10.1016/j.fsi.2017.12.059] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 12/23/2017] [Accepted: 12/28/2017] [Indexed: 06/07/2023]
Abstract
Macrophage receptor with collagenous structure (MARCO) plays essential roles in phagocytic cell-mediated innate immune responses. However, studies regarding MARCO, especially its functions, are limited in teleost species. In this study, we identified a MARCO molecule (PaMARCO) from ayu (Plecoglossus altivelis). PaMARCO shared conserved functional domains with its mammalian counterparts. Sequence analysis showed that PaMARCO was most closely related to its rainbow trout (Oncorhynchus mykiss) counterpart. PaMARCO expression was upregulated in all tested immune tissues and monocytes/macrophages (MO/MΦ) upon Vibrio anguillarum infection, and blocking its function significantly decreased the immune responses of MO/MΦ during infection. PaMARCO could bind to the tested gram-positive and -negative bacteria in a Ca2+-dependent manner in vitro. Furthermore, the phagocytosis and bacterial killing activities of MO/MΦ were significantly decreased upon PaMARCO blockade using anti-PaMARCO IgG. PaMARCO was also involved in the polarization processes of ayu MO/MΦ. The upregulated expression of representative cytokines in LPS-induced M1 type (TNF-α, IL-1β) or cAMP-induced M2 type (TGF-β, IL-10) were inhibited in the anti-PaMARCO IgG-treated group, indicating that PaMARCO may be involved in the regulation of both inflammation priming and inflammation resolution of MO/MΦ. In conclusion, our results implicate that PaMARCO has essential regulatory roles for bacterial binding, clearance, and the polarization processes of ayu MO/MΦ.
Collapse
Affiliation(s)
- Le Zhang
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Li Nie
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Shi-Yu Cai
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Jie Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China
| | - Jiong Chen
- Laboratory of Biochemistry and Molecular Biology, School of Marine Sciences, Ningbo University, Ningbo 315211, China; Key Laboratory of Applied Marine Biotechnology of Ministry of Education, Ningbo University, Ningbo 315211, China.
| |
Collapse
|
13
|
Liu H, Xu Y, Wang Y, Zhong S, Wang M, Lin P, Li H, Liu Z. Cd36 is a candidate lipid sensor involved in the sensory detection of fatty acid in zebrafish. Physiol Behav 2017; 182:34-39. [PMID: 28939428 DOI: 10.1016/j.physbeh.2017.09.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 08/15/2017] [Accepted: 09/17/2017] [Indexed: 11/26/2022]
Abstract
Recently more and more evidences raise the possibility for the taste system in the role of the perception of lipids in mammals, and the fatty acid receptor CD36 has been proved to be as an important candidate receptor of fat taste. Fish has different taste modality with mammals. No information was known about the function of cd36 in fish taste till now. Here, using in situ hybridization and immunofluorescence technologies, we showed that fish cd36/Cd36 localized in taste buds. Real-time PCR technology demonstrated that, in zebrafish cd36 (zcd36)-transfected cells, linoleic acid (LA) increased the expression level of tryptophan hydroxylase-1 (TPH-1), which encodes the enzyme involved in the biosynthesis of monoamine neurotransmitter of 5-HT. Moreover, the LA-induced up-regulation expression of TPH-1 was significantly curtailed by SSO, a specific inhibitor of LCFA binding to CD36, suggesting zCd36 is implicated in the LA-induced release of neurotransmitter. Importantly, we observed that zcd36 gene knockout zebrafish reduced the preference for LA contrast to wild-type zebrafish. Together, our findings indicate that Cd36 is a candidate lipid sensor involved in the sensory detection of fatty acid in zebrafish.
Collapse
Affiliation(s)
- Haiyang Liu
- College of Marine Life Science, Institute of Evolution & Marine Biodiversity, Ocean University of China, China
| | - Yanping Xu
- College of Marine Life Science, Institute of Evolution & Marine Biodiversity, Ocean University of China, China
| | - Ying Wang
- College of Marine Life Science, Institute of Evolution & Marine Biodiversity, Ocean University of China, China
| | - Shenjie Zhong
- College of Marine Life Science, Institute of Evolution & Marine Biodiversity, Ocean University of China, China
| | - Min Wang
- College of Marine Life Science, Institute of Evolution & Marine Biodiversity, Ocean University of China, China
| | - Pengyan Lin
- College of Marine Life Science, Institute of Evolution & Marine Biodiversity, Ocean University of China, China
| | - Hongyan Li
- College of Marine Life Science, Institute of Evolution & Marine Biodiversity, Ocean University of China, China
| | - Zhenhui Liu
- College of Marine Life Science, Institute of Evolution & Marine Biodiversity, Ocean University of China, China.
| |
Collapse
|
14
|
Roles of GATA6 during Gonadal Development in Japanese Flounder: Gonadogenesis, Regulation of Gender-Related Genes, Estrogen Formation and Gonadal Function Maintenance. Int J Mol Sci 2017; 18:ijms18010160. [PMID: 28275215 PMCID: PMC5297793 DOI: 10.3390/ijms18010160] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 12/22/2016] [Accepted: 01/09/2017] [Indexed: 01/09/2023] Open
Abstract
GATA-binding protein 6 (GATA6), a highly-conserved transcription factor of the GATA family plays an important role in gonadal cell proliferation, differentiation and endoderm development. In this study, the full-length cDNA of GATA6 of Paralichthys olivaceus (Japanese flounder) was obtained. Phylogenetic, gene structure and synteny analyses demonstrated that GATA6 of P. olivaceus is homologous to that of teleosts and tetrapods. The P. olivaceus GATA6 transcript showed higher expression in testis than in ovary, demonstrating a sexually dimorphic gene expression. During embryonic development, the expression of P. olivaceus GATA6 increased at the blastula stage, demonstrating that GATA6 is involved in morphogenesis. Results of in situ hybridization showed that GATA6 signals were detected in Sertoli cells, oogonia and oocytes. Moreover, 17α methyl testosterone, a male hormone, could moderately upregulate P. olivaceus GATA6 and downregulate P. olivaceus aromatase CYP19A1 in testis cells. These results suggest that GATA6 may play an important role in gonadal development in P. olivaceus. This study provides valuable information on the function of P. olivaceus GATA6, laying the foundation for further development of breeding techniques in this species.
Collapse
|
15
|
Quinlivan VH, Farber SA. Lipid Uptake, Metabolism, and Transport in the Larval Zebrafish. Front Endocrinol (Lausanne) 2017; 8:319. [PMID: 29209275 PMCID: PMC5701920 DOI: 10.3389/fendo.2017.00319] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 11/01/2017] [Indexed: 01/08/2023] Open
Abstract
The developing zebrafish is a well-established model system for studies of energy metabolism, and is amenable to genetic, physiological, and biochemical approaches. For the first 5 days of life, nutrients are absorbed from its endogenous maternally deposited yolk. At 5 days post-fertilization, the yolk is exhausted and the larva has a functional digestive system including intestine, liver, gallbladder, pancreas, and intestinal microbiota. The transparency of the larval zebrafish, and the genetic and physiological similarity of its digestive system to that of mammals make it a promising system in which to address questions of energy homeostasis relevant to human health. For example, apolipoprotein expression and function is similar in zebrafish and mammals, and transgenic animals may be used to examine both the transport of lipid from yolk to body in the embryo, and the trafficking of dietary lipids in the larva. Additionally, despite the identification of many fatty acid and lipid transport proteins expressed by vertebrates, the cell biological processes that mediate the transport of dietary lipids from the intestinal lumen to the interior of enterocytes remain to be elucidated. Genetic tractability and amenability to live imaging and a range of biochemical methods make the larval zebrafish an ideal model in which to address open questions in the field of lipid transport, energy homeostasis, and nutrient metabolism.
Collapse
Affiliation(s)
- Vanessa H. Quinlivan
- Carnegie Institution for Science (CIS), Baltimore, MD, United States
- The Johns Hopkins University, Baltimore, MD, United States
| | - Steven A. Farber
- Carnegie Institution for Science (CIS), Baltimore, MD, United States
- The Johns Hopkins University, Baltimore, MD, United States
- *Correspondence: Steven A. Farber,
| |
Collapse
|