1
|
Ding C, Xiao T, Deng Y, Yang H, Xu B, Li J, Lv Z. The Teleost CXCL13-CXCR5 Axis Induces Inflammatory Cytokine Expression through the Akt-NF-κB, p38-AP-1, and p38-NF-κB Pathways. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2024; 212:317-334. [PMID: 38054894 DOI: 10.4049/jimmunol.2300237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 11/08/2023] [Indexed: 12/07/2023]
Abstract
The ancestors of chemokines originate in the most primitive of vertebrates, which has recently attracted great interest in the immune functions and the underlying mechanisms of fish chemokines. In the current study, we identified an evolutionarily conserved chemokine, CiCXCL13, from a teleost fish, grass carp. CiCXCL13 was characterized by a typical SCY (small cytokine CXC) domain and four cysteine residues (C34, C36, C61, C77), with the first two cysteines separated by a random amino acid residue, although it shared 24.2-54.8% identity with the counterparts from other vertebrates. CiCXCL13 was an inducible chemokine, whose expression was significantly upregulated in the immune tissues of grass carps after grass carp reovirus infection. CiCXCL13 could bind to the membrane of grass carp head kidney leukocytes and promote cell migration, NO release, and the expression of >15 inflammatory cytokines, including IL-1β, TNF-α, IL-10 and TGF-β1, thus regulating the inflammatory response. Mechanistically, CiCXCL13 interacted with its evolutionarily conserved receptor CiCXCR5 and activated the Akt-NF-κB and p38-AP-1 pathways, as well as a previously unrevealed p38-NF-κB pathway, to efficiently induce inflammatory cytokine expression, which was distinct from that reported in mammals. Zebrafish CXCL13 induced inflammatory cytokine expression through Akt, p38, NF-κB, and AP-1 as CiCXCL13. Meanwhile, the CiCXCL13-CiCXCR5 axis-mediated inflammatory activity was negatively shaped by grass carp atypical chemokine receptor 2 (CiACKR2). The present study is, to our knowledge, the first to comprehensively define the immune function of CXCL13 in inflammatory regulation and the underlying mechanism in teleosts, and it provides a valuable perspective on the evolution and biology of fish chemokines.
Collapse
Affiliation(s)
- Chunhua Ding
- Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, Hunan Agricultural University, Changsha, China; and Fisheries College, Hunan Agricultural University, Changsha, China
| | - Tiaoyi Xiao
- Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, Hunan Agricultural University, Changsha, China; and Fisheries College, Hunan Agricultural University, Changsha, China
| | - Yadong Deng
- Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, Hunan Agricultural University, Changsha, China; and Fisheries College, Hunan Agricultural University, Changsha, China
| | - Hong Yang
- Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, Hunan Agricultural University, Changsha, China; and Fisheries College, Hunan Agricultural University, Changsha, China
| | - Baohong Xu
- Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, Hunan Agricultural University, Changsha, China; and Fisheries College, Hunan Agricultural University, Changsha, China
| | - Junhua Li
- Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, Hunan Agricultural University, Changsha, China; and Fisheries College, Hunan Agricultural University, Changsha, China
| | - Zhao Lv
- Hunan Engineering Technology Research Center of Featured Aquatic Resources Utilization, Hunan Agricultural University, Changsha, China; and Fisheries College, Hunan Agricultural University, Changsha, China
| |
Collapse
|
2
|
Li H, Li H, Liu Y, Zheng Y, Zhang M, Wang X, Cui H, Wang H, Zhao X, Chen X, Cheng H, Xu J, Ding Z. Molecular characterization and expression patterns of CXCL8 gene from blunt snout bream (Megalobrama amblycephala) and its chemotactic effects on macrophages and neutrophils. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 142:104658. [PMID: 36758661 DOI: 10.1016/j.dci.2023.104658] [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: 09/07/2022] [Revised: 01/16/2023] [Accepted: 02/06/2023] [Indexed: 06/18/2023]
Abstract
CXCL8 is a typical CXC-type chemokine, which mediates the migration of immune cells from blood vessels to the site of inflammation or injury to clear pathogenic microorganisms and repair damaged tissues. In this study, Megalobrama amblycephala CXCL8 (MaCXCL8) gene was identified and characterized. Sequence analysis showed that the deduced MaCXCL8 protein possessed the typical structure of CXCL8 from other species, with the characteristic CXC cysteine residues in the N-terminal and accompanied by a DLR motif (Asp-Leu-Arg motif). Phylogenetic analysis revealed that MaCXCL8 was homologous to that of Ctenopharyngodon idella and other cyprinid fishes. MaCXCL8 gene was expressed in all detected healthy tissues, with the highest expression levels in the spleen, and its expression was significantly up-regulated upon the challenge of Aeromonas hydrophila and Lipopolysaccharide (LPS) both in juvenile M. amblycephala tissues and primary macrophages. The immunohistochemical assay showed that MaCXCL8 was mainly distributed in the nucleus and cytoplasm, and its expression levels increased observably with the prolongation of bacterial infection. In addition, recombinant MaCXCL8 protein exhibited significant chemotactic effects on neutrophils and macrophages. In conclusion, MaCXCL8 is involved in the immune response of M. amblycephala, and these findings will be helpful to understand the biological roles of MaCXCL8 and provide a theoretical basis for the prevention and control of fish bacterial diseases.
Collapse
Affiliation(s)
- Hongping Li
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Hong Li
- Hunan Fisheries Science Institute, Hunan, 410153, China
| | - Yunlong Liu
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Yancui Zheng
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Minying Zhang
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Xu Wang
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Hujun Cui
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Haotong Wang
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Xiaoheng Zhao
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Xiangning Chen
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Hanliang Cheng
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Jianhe Xu
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China
| | - Zhujin Ding
- College of Marine Life and Fisheries, Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Key Laboratory of Marine Bioresources and Environment, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, 222005, China; Jiangsu Marine Resources Development Institute, Lianyungang, 222005, China.
| |
Collapse
|
3
|
Wang Y, Cheng Z, Zhang H, Li S, Pan Y, Zhang W, Huang S, He X, Zou F, Yuan Z, Yan W, Huang H. Tri-n-butyl phosphate delays tissue repair by dysregulating neutrophil function in zebrafish. Toxicol Appl Pharmacol 2022; 449:116114. [PMID: 35690110 DOI: 10.1016/j.taap.2022.116114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/14/2022] [Accepted: 06/05/2022] [Indexed: 10/18/2022]
Abstract
Tri-n-butyl phosphate (TnBP) is a widely used organophosphate ester, but its effects on the regenerative process under damaging circumstances remain unknown. In the present study, zebrafish larvae were exposed to 0, 50, 100, 200 and 1000 μg/L TnBP, and the caudal fins were cut at 72 hours post fertilization (hpf). First, after exposure to TnBP, the number of total neutrophils decreased together with decreased neutrophils in the tail, and TnBP inhibited chemotaxis. Second, reactive oxygen species (ROS) levels in the zebrafish decreased greatly. Following exposure to TnBP, transcription levels of many genes regulating fin regeneration, such as fgf20a, fgfr1a, bmp2a and bmp4, were significantly downregulated, while inflammatory factors such as cxcl8a, cxcl18b, il-6, and tnfa were abnormally upregulated. In addition, TnBP inhibited the regenerative area after caudal fin amputation. The inflammatory state was adverse during the regenerative process. In summary, TnBP exposure is immunotoxic and decreases oxidative stress in injured zebrafish larvae.
Collapse
Affiliation(s)
- Yunpeng Wang
- The Second Affiliated Hospital of Chongqing Medical University, No.76 Linjiang Road, Yuzhong District, 400010 Chongqing, China
| | - Zhi Cheng
- School of Basic Medical Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China
| | - Huan Zhang
- School of Basic Medical Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China
| | - Shuaiting Li
- The Second Affiliated Hospital of Chongqing Medical University, No.76 Linjiang Road, Yuzhong District, 400010 Chongqing, China
| | - Yiming Pan
- School of Basic Medical Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China
| | - Weiyang Zhang
- The First Affiliated Hospital of Chongqing Medical University, No.1 Yuanjia Gangyouyi Road, Yuzhong District, Chongqing 400042, China
| | - Siyuan Huang
- School of Basic Medical Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China
| | - Xiwen He
- School of Basic Medical Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China
| | - Fa Zou
- School of Basic Medical Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing 400016, China
| | - Zhi Yuan
- The Second Affiliated Hospital of Chongqing Medical University, No.76 Linjiang Road, Yuzhong District, 400010 Chongqing, China
| | - Wenhua Yan
- The Second Affiliated Hospital of Chongqing Medical University, No.76 Linjiang Road, Yuzhong District, 400010 Chongqing, China.
| | - Huizhe Huang
- The Second Affiliated Hospital of Chongqing Medical University, No.76 Linjiang Road, Yuzhong District, 400010 Chongqing, China.
| |
Collapse
|
4
|
Zhao M, Liu Y, Gao Y, Wang X, Zhou H, Zhang A. Insights into the functional role of grass carp IL-8 in head kidney leukocytes: pro-inflammatory effects and signalling mechanisms. JOURNAL OF FISH BIOLOGY 2022; 100:192-202. [PMID: 34716580 DOI: 10.1111/jfb.14934] [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: 07/28/2021] [Revised: 10/23/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Interleukin-8 (IL-8) is a critical chemokine regulating immune cells' chemotaxis as well as their physiological or pathological activations. In fish cells, recombinant IL-8 proteins induced transcriptions of pro-inflammatory cytokines. Nonetheless, the exact mechanisms underlying the function of fish IL-8 as a pro-inflammatory cytokine are still unclear. In this paper, the authors first prepared recombinant grass carp IL-8 (rgcIL-8) using an Escherichia coli expression system, and later confirmed rgcIL-8 increased gene expression of il8, il1β and tumour necrosis factor alpha (tnfα) in grass carp head kidney leukocytes (HKLs). Using signalling pathway inhibitors, the authors showed that rgcIL-8 regulated transcriptions of pro-inflammatory cytokines via MAPK and/or NF-κB signalling pathways. They cloned gcIL-8-specific receptor CXCR1 and subsequently discovered that gcIL-8 could increase the activity of NF-κB and the transcription of IL-1β via CXCR1. Simultaneously, antibody neutralization assay showed that endogenous IL-8 is partially relevant to the self-regulation of IL-1β. Moreover, rgcIL-8 led to the expression of inducible nitric oxide synthase gene, causing an accumulation of nitric oxide in the culture medium of HKLs, suggesting the potential of gcIL-8 to mediate inflammatory response. This study not only enriched the function of IL-8 in teleost but also revealed it as a potential target for the inflammatory control in grass carp.
Collapse
Affiliation(s)
- Minghui Zhao
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Yazhen Liu
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Yajun Gao
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Xinyan Wang
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Hong Zhou
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Anying Zhang
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| |
Collapse
|
5
|
Li Y, Zhang P, Gao C, Cao M, Yang N, Li X, Li C, Fu Q. CXC chemokines and their receptors in black rockfish (Sebastes schlegelii): Characterization, evolution analyses, and expression pattern after Aeromonas salmonicida infection. Int J Biol Macromol 2021; 186:109-124. [PMID: 34242645 DOI: 10.1016/j.ijbiomac.2021.07.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 07/02/2021] [Accepted: 07/02/2021] [Indexed: 10/20/2022]
Abstract
Chemokines are crucial regulators of cell mobilization for development, homeostasis, and immunity. Chemokines signal through binding to chemokine receptors, a superfamily of seven-transmembrane domain G-coupled receptors. In the present study, seventeen CXC chemokine ligands (SsCXCLs) and nine CXC chemokine receptors (SsCXCRs) were systematically identified from Sebastes schlegelii genome. Phylogeny, synteny, and evolutionary analyses were performed to annotate these genes, indicating that the tandem duplications (CXCL8, CXCL11, CXCL32, CXCR2, and CXCR3), the whole genome duplications (CXCL8, CXCL12, CXCL18, and CXCR4), and the teleost-specific members (CXCL18, CXCL19, and CXCL32) led to the expansion of SsCXCLs and SsCXCRs. In addition, SsCXCLs and SsCXCRs were ubiquitously expressed in nine examined healthy tissues, with high expression levels observed in head kidney, liver, gill and spleen. Moreover, most SsCXCLs and SsCXCRs were significantly differentially expressed in head kidney, liver, and gill after Aeromonas salmonicida infection, and exhibited tissue-specific and time-dependent manner. Finally, protein-protein interaction network (PPI) analysis indicated that SsCXCLs and SsCXCRs interacted with a few immune-related genes such as interleukins, cathepsins, CD genes, and TLRs, etc. These results should be valuable for comparative immunological studies and provide insights for further functional characterization of chemokines and receptors in teleost.
Collapse
Affiliation(s)
- Yuqing Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Pei Zhang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Chengbin Gao
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Min Cao
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Ning Yang
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Xingchun Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Chao Li
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Qiang Fu
- School of Marine Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China.
| |
Collapse
|