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Wang D, Ma X, Hu H, Ren J, Liu J, Zhou H. Functional identification of two HMGB1 paralogues provides insights into autophagic machinery in teleost. FISH & SHELLFISH IMMUNOLOGY 2024; 147:109457. [PMID: 38387685 DOI: 10.1016/j.fsi.2024.109457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 02/24/2024]
Abstract
High mobility group box 1 (HMGB1) is a multifunctional regulator that plays different roles in various physiological and pathological processes including cell development, autophagy, inflammation, tumor metastasis, and cell death based on its cellular localization. Unlike mammalian HMGB1, two HMGB1 paralogues (HMGB1a and HMGB1b) have been found in fathead minnow and other fish species and its function as an inflammatory cytokine has been well investigated. However, the role of fish HMGB1 in autophagy regulation has not been well clarified. In the present study, we generated HMGB1 paralogues single (HMGB1a-/- and HMGB1b-/-) and double knockout (DKO) epithelioma papulosum cyprini (EPC) cells from fathead minnow by CRISPR/Cas9 system, and the knockout efficiency of these genes was verified at both gene and protein levels. In this context, the effects of HMGB1 gene knockout on the protein expression of microtubule-associated protein 1 light chain 3 II (LC3-II), an autophagy marker, were determined, showing that single knockout of two HMGB1 paralogues significantly decreased the expression of LC3-II, and these inhibitory effects were further amplified in HMGB1 DKO cells under both basal and rapamycin treatment conditions, indicating the role of two HMGB1 paralogues in fish autophagy. In agreement with this notion, overexpression of HMGB1a or HMGB1b with Flag-tag markedly upregulated LC3-II protein expression. Interestingly, overexpressing two paralogues distributed in both cytoplasm and nucleus. Finally, the role of HMGB1-mediated autophagy was further explored, finding that HMGB1 could interact with Beclin1, a key initiation factor of autophagy. Taken together, these findings highlighted the role of HMGB1 paralogues as the autophagy regulator and increased our understanding of autophagic machinery in teleost.
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Affiliation(s)
- Dan Wang
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiaoyu Ma
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Hengyi Hu
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Jingqi Ren
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Jiaxi Liu
- 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.
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Martínez D, Nualart D, Loncoman C, Opazo JC, Zabala K, Morera FJ, Mardones GA, Vargas-Chacoff L. Discovery of BbX transcription factor in the patagonian blennie: Exploring expression changes following combined bacterial and thermal stress exposure. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 149:105056. [PMID: 37730191 DOI: 10.1016/j.dci.2023.105056] [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: 03/31/2023] [Revised: 09/10/2023] [Accepted: 09/10/2023] [Indexed: 09/22/2023]
Abstract
High-Mobility Group (HMG) proteins are involved in different processes such as transcription, replication, DNA repair, and immune response. The role of HMG proteins in the immune response of fish has been studied mainly for HMGB1, where its expression can be induced by the stimulation of viral/bacterial PAMPs and can act as a proinflammatory mediator and as a global regulator of transcription in response to temperature. However, for BbX this role remains to be discovered. In this work, we identified the BbX of E. maclovinus and evaluated the temporal expression levels after simultaneous challenge with P. salmonis and thermal stress. Phylogenetic analysis does not significantly deviate from the expected organismal relationships suggesting orthologous relationships and that BbX was present in the common ancestor of the group. BbX mRNA expression levels were very high in the intestinal tissue of E. maclovinus (foregut, midgut, and hindgut). Nevertheless, the protein levels analyzed by WB showed the highest levels of BbX protein in the liver (constitutive expression). On the other hand, the mRNA expression levels of BbX in the liver of E. maclovinus injected with P. salmonis and subjected to thermal stress showed an increase at days 16 and 20 in all treatments applied at 12 °C and 18 °C. Meanwhile, the protein levels quantified by WB showed a statistically significant increase in the HMG-Bbx at all experimental times (4, 8, 12, 16, and 20 dpi). However, at 4 dpi the HMG-Bbx protein levels were much higher than the other days evaluated. The results suggest that BbX protein may be implicated in the response mechanism to temperature and bacterial stimulation in the foregut, midgut, hindgut, and liver, according to our findings at the level of mRNA and protein. Furthermore, our WB analysis suggests an effect of P. salmonis on the expression of this protein that can be observed in condition C+ 12 °C compared to C- 12 °C. Then, there is an effect of temperature that can be evidenced in the condition AM 18 °C and SM 18 °C, compared to AB 18 °C and SB 18 °C at 4, 8, and 12 dpi. We found not differences in the levels of this protein if the thermal stress is achieved through acclimatization or shock. More research is necessary to clarify the importance of this type of HMG in the immune response and thermal tolerance in fish.
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Affiliation(s)
- Danixa Martínez
- Laboratorio Institucional de Investigación, Facultad de Ciencias de La Naturaleza, Universidad San Sebastián, Puerto Montt, Chile.
| | - Daniela Nualart
- Escuela de Graduados, Programa de Doctorado en Ciencias de La Acuicultura, Universidad Austral de Chile, Puerto Montt, Chile; Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Valdivia, Chile; Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems, BASE, University Austral of Chile, Valdivia, Chile; Centro Fondap de Investigación de Altas Latitudes (IDEAL), Universidad Austral de Chile, Casilla 567, Valdivia, Chile
| | - Carlos Loncoman
- Instituto de Bioquímica y Microbiología, Laboratorio de Bioquímica Farmacológica, Virología y Biotecnología, Universidad Austral de Chile, Valdivia, Chile
| | - Juan C Opazo
- Integrative Biology Group, Valdivia, Chile; Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; Millennium Nucleus of Ion Channel-Associated Diseases (MiNICAD), Valdivia, Chile; Facultad de Medicina y Ciencia, Universidad San Sebastián, Valdivia, Chile
| | - Kattina Zabala
- Instituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; Facultad de Medicina y Ciencia, Universidad San Sebastián, Valdivia, Chile
| | - Francisco J Morera
- Integrative Biology Group, Valdivia, Chile; Escuela de Medicina Veterinaria, Facultad de Agronomía e Ingeniería Forestal, Facultad de Ciencias Biológicas y Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Gonzalo A Mardones
- Integrative Biology Group, Valdivia, Chile; Facultad de Medicina y Ciencia, Universidad San Sebastián, Valdivia, Chile
| | - Luis Vargas-Chacoff
- Instituto de Ciencias Marinas y Limnológicas, Universidad Austral de Chile, Valdivia, Chile; Millennium Institute Biodiversity of Antarctic and Subantarctic Ecosystems, BASE, University Austral of Chile, Valdivia, Chile; Centro Fondap de Investigación de Altas Latitudes (IDEAL), Universidad Austral de Chile, Casilla 567, Valdivia, Chile; Integrative Biology Group, Valdivia, Chile.
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Chen D, Lu L, Wang H, Peng S, Liu J, Zhang X, Li Z, Huang X, Ouyang P, Qu L, Geng Y. Expression profiling and inflammatory activation analysis of high-mobility group box 1 in Schizothorax prenanti. JOURNAL OF AQUATIC ANIMAL HEALTH 2022; 34:174-183. [PMID: 36063081 DOI: 10.1002/aah.10172] [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: 04/06/2022] [Revised: 06/19/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023]
Abstract
OBJECTIVE High-mobility group box 1 (HMGB1) is a highly conserved nuclear protein and participates in the immune response to pathogens in bony fish. In this study, the structure and function of HMGB1 in the cyprinid fish Schizothorax prenanti (SpHMGB1) were investigated. METHODS The spatial structure of SpHMGB1 was predicted by CPHmodels. Quantitative reverse transcription PCR was used to detect the mRNA of SpHMGB1 in different tissues and Streptococcus agalactiae infection. The macrophage was treated with synthetic SpHMGB1-B box peptide to analyze the inflammatory activity. RESULT Structurally, SpHMGB1 had the conserved A box, B box, and acid tail compared with Zebrafish Danio rerio and mice Mus musculus. SpHMGB1 was universally expressed in various tissues, with the highest expression in the middle kidney. In vivo, SpHMGB1 was significantly induced in response to Streptococcus agalactiae infection in the blood and spleen. Synthetic SpHMGB1-B box peptide activated respiratory burst and up-regulated the messenger RNA expression of interleukin-1β, tumor necrosis factor α, interleukin-10, interferon regulatory factor 1, interferon regulatory factor 7, C-X-C motif chemokine ligand 11-1, C-X-C motif chemokine ligand 11-2, and toll-like receptor 4 in macrophages. CONCLUSION This study suggested that SpHMGB1 participated in the response to bacterial pathogens and that SpHMGB1-B box peptide played an important role in mediating the immune response of S. prenanti.
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Affiliation(s)
- Defang Chen
- Aquaculture Department, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Lu Lu
- Aquaculture Department, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Hong Wang
- Aquaculture Department, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Shuang Peng
- Aquaculture Department, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Jiaxi Liu
- Aquaculture Department, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Xin Zhang
- Aquaculture Department, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Zhiqiong Li
- Aquaculture Department, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Xiaoli Huang
- Aquaculture Department, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu, China
| | - Ping Ouyang
- Research Center of Aquatic Animal Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
| | - Lianshi Qu
- Ya'an Fishery Development Center, Ya'an, China
| | - Yi Geng
- Research Center of Aquatic Animal Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu, China
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Lu L, Dai S, Liu L, Liu J, Zhang X, Huang X, Ouyang P, Geng Y, Li Z, Chen D. Identification and characterization of high mobility group box 1 and high mobility group box 2 in Siberian sturgeon (Acipenser baerii). Gene 2022; 850:146932. [PMID: 36191827 DOI: 10.1016/j.gene.2022.146932] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/30/2022] [Accepted: 09/26/2022] [Indexed: 11/28/2022]
Abstract
High mobility group box 1 (HMGB1) and high mobility group box 2 (HMGB2) were highly conserved nonhistone chromosomal proteins involved in DNA damage repair, innate immune and inflammatory response. In this study, Acipenser baerii HMGB1 (AbHMGB1) and HMGB 2 (HMGB2) were identified. The open reading frame (ORF) of AbHMGB1 was 621 bp which encoded 206 amino acids, and the ORF of AbHMGB2 was 630 bp encoded 209 amino acids. AbHMGB1 and AbHMGB2 were conserved compared with bony fish by phylogenetic analyzing. qRT-PCR showed that AbHMGB1 and AbHMGB2 were expressed in all examined tissues, AbHMGB1 was expressed abundantly in muscle, followed by head kidney and brain, and AbHMGB2 was highest expressed in gill, followed by brain and muscle. After Streptococcus iniae infection and PAMPs treatment, AbHMGB1 and AbHMGB2 were induced significantly. This study indicated that AbHMGB1 and AbHMGB2 are involved in the process of pathogenic infection and provided a basis for exploring the mechanism of Acipenser baerii enteritis induced by Streptococcus iniae.
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Affiliation(s)
- Lu Lu
- Aquaculture Department, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Shaotong Dai
- Aquaculture Department, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Lulu Liu
- Aquaculture Department, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Jiaxi Liu
- Aquaculture Department, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Xin Zhang
- Aquaculture Department, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Xiaoli Huang
- Aquaculture Department, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Ping Ouyang
- Research Center of Aquatic Animal Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Yi Geng
- Research Center of Aquatic Animal Diseases, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China
| | - Zhiqiong Li
- Aquaculture Department, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Defang Chen
- Aquaculture Department, College of Animal Science & Technology, Sichuan Agricultural University, Chengdu 611130, China.
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Chen Y, Yu C, Jiang S, Sun L. Japanese Flounder HMGB1: A DAMP Molecule That Promotes Antimicrobial Immunity by Interacting with Immune Cells and Bacterial Pathogen. Genes (Basel) 2022; 13:genes13091509. [PMID: 36140677 PMCID: PMC9498587 DOI: 10.3390/genes13091509] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 08/19/2022] [Accepted: 08/20/2022] [Indexed: 11/16/2022] Open
Abstract
High mobility group box (HMGB) proteins are DNA-associated proteins that bind and modulate chromosome structures. In mammals, HMGB proteins can be released from the cell nucleus and serve as a damage-associated molecular pattern (DAMP) under stress conditions. In fish, the DAMP function of HMGB proteins in association with bacterial infection remains to be investigated. In this study, we examined the immunological functions of two HMGB members, HMGB1 and HMG20A, of Japanese flounder. HMGB1 and HMG20A were expressed in multiple tissues of the flounder. HMGB1 was released from peripheral blood leukocytes (PBLs) upon bacterial challenge in a temporal manner similar to that of lactate dehydrogenase release. Recombinant HMGB1 bound to PBLs and induced ROS production and the expression of inflammatory genes. HMGB1 as well as HMG20A also bound to various bacterial pathogens and caused bacterial agglutination. The bacteria-binding patterns of HMGB1 and HMG20A were similar, and the binding of HMGB1 competed with the binding of HMG20A but not vice versa. During bacterial infection, HMGB1 enhanced the immune response of PBLs and repressed bacterial invasion. Collectively, our results indicate that flounder HMGB1 plays an important role in antimicrobial immunity by acting both as a modulator of immune cells and as a pathogen-interacting DAMP.
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Affiliation(s)
- Yuan Chen
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Yu
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shuai Jiang
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Sun
- CAS and Shandong Province Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266237, China
- College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Correspondence:
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Wang X, Liu Z, Ma A. Interpretation of the Genotype by Tissue Interactions of Four Genes (AFP1, CIRP, YB-1, and HMGB1) in Takifugu rubripes Under Different Low-Temperature Conditions. Front Mol Biosci 2022; 9:897935. [PMID: 35847974 PMCID: PMC9280165 DOI: 10.3389/fmolb.2022.897935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 06/08/2022] [Indexed: 11/13/2022] Open
Abstract
Background: The differential expression of the same gene in different tissues could be due to the genotype effect, tissue effect, and/or genotype × tissue interactions. However, the genetic mechanisms responsible for this differential expression have not been reported to date.Methods: Four resistance genes to low temperature, the genes for antifreeze protein (AFP), cold induced RNA binding protein (CIRP), high mobility group protein box-1 (HMGB1), and Y-box binding protein (YB-1), were measured by PCR in the liver, spleen, kidney, brain, heart, intestine, muscle, gonad, and skin of Takifugu rubripes cultured under different temperature conditions (18, 13, 8, and 5°C). Split-split-plot analysis of variance, additive main effects and multiplicative interaction (AMMI) and genotype main effects and genotype × environment interaction (GGE) biplot analysis were used to evaluate the effects of genotype × tissue interactions on gene expression.Results: The results of split-split-plot analysis of variance showed that water temperature has a significant effect on the expression of T. rubripes cold resistant genes, while tissue × gene interaction has a highly significant effect on it. AMMI analysis showed that the contributions of genotype, tissue, and genotype × tissue interactions to the total variation in gene expression followed two trends: 1) as temperature decreased, the gene effect increased gradually and the genotype × tissue interaction decreased gradually; 2) the gene effect at 18 and 13°C was significantly lower than that at 8 and 5°C, while the interaction at 18 and 13°C was significantly higher than that at 8 and 5°C. GGE analysis showed that: at all temperatures except 8°C, the expression rankings of all four genes were highly positively correlated in all tissues except muscle; the expression stability of the genes was the same at 18°C/13°C and at 8°C/5°C; and AFP1 showed the best expression and stability among the four genes.Conclusion: 8°C/5°C as the suitable temperature for such experiments for T. rubripes. Among the four antifreeze genes evaluated in this study, AFP1 had the best expression and stability.
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Affiliation(s)
- Xinan Wang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Zhifeng Liu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Aijun Ma
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- *Correspondence: Aijun Ma,
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Wang Y, Xiao X, Wang F, Yang Z, Yue J, Shi J, Ke F, Xie Z, Fan Y. An identified PfHMGB1 promotes microcystin-LR-induced liver injury of yellow catfish (Pelteobagrus fulvidraco). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 207:111266. [PMID: 32919194 DOI: 10.1016/j.ecoenv.2020.111266] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 08/23/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
Microcystin-LR (MC-LR) is a potent hepatotoxin that can cause liver inflammation and injury. However, the mode of action of related inflammatory factors is not fully understood. PfHMGB1 is an inflammatory factor induced at the mRNA level in the liver of juvenile yellow catfish (Pelteobagrus fulvidraco) that were intraperitoneally injected with 50 μg/kg MC-LR. The PfHMGB1 mRNA level was highest in the liver and muscle among 11 tissues examined. The full-length cDNA sequence of PfHMGB1 was cloned and overexpressed in E. coli, and the purified protein rPfHMGB1 demonstrated DNA binding affinity. Endotoxin-free rPfHMGB1 (6-150 μg/mL) also showed dose-dependent hepatotoxicity and induced inflammatory gene expression of primary hepatocytes. PfHMGB1 antibody (anti-PfHMGB1) in vitro reduced MC-LR (30 and 50 μmol/L)-induced hepatotoxicity, suggesting PfHMGB1 is important in the toxic effects of MC-LR. In vivo study showed that MC-LR upregulated PfHMGB1 protein in the liver. The anti-PfHMGB1 blocked its counterpart and reduced ALT/AST activities after MC-LR exposure. Anti-PfHMGB1 partly neutralized MC-LR-induced hepatocyte disorganization, nucleus shrinkage, mitochondria, and rough endoplasmic reticula destruction. These findings suggest that PfHMGB1 promotes MC-LR-induced liver damage in the yellow catfish. HMGB1 may help protect catfish against widespread microcystin pollution.
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Affiliation(s)
- Yun Wang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Hubei Province, Wuhan, 430056, China; Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China.
| | - Xiaoxue Xiao
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Feijie Wang
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Zupeng Yang
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Jingkai Yue
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Jiale Shi
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Fei Ke
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Zhaohui Xie
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China
| | - Yanru Fan
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Pingdingshan, 467036, China
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Wang Y, Yang Y, Chen Q, Zhai H, Xie Z, Ke F. PfHMGB2 protects yellow catfish (Pelteobagrus fulvidraco) from bacterial infection by promoting phagocytosis and proliferation of PBL. FISH & SHELLFISH IMMUNOLOGY 2019; 93:567-574. [PMID: 31394161 DOI: 10.1016/j.fsi.2019.08.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 08/05/2019] [Indexed: 06/10/2023]
Abstract
HMGB2, a member of the high mobility group box family, plays an important role in host immune responses. However, the mechanism of action of HMGB2 is not well understood. Herein, a homologue from yellow catfish (Pelteobagrus fulvidraco) was cloned and named PfHMGB2. The deduced amino acid sequence of PfHMGB2 possessed a typical tripartite structure (two DNA binding boxes and an acid tail) and shared 90% identity with the predicted HMGB2 from I. punctatus. The mRNA of PfHMGB2 was widely distributed in all 11 tested tissues in healthy fish bodies and was significantly induced in the liver and head kidney when yellow catfish were injected with inactivated Aeromonas hydrophila. Consistently, PfHMGB2 mRNA could also be induced in yellow catfish peripheral blood leucocytes (PBL) by lipopolysaccharide. The recombinant PfHMGB2 protein was purified from E. coli BL21 (DE3):pET-28a/PfHMGB2 and showed DNA-binding affinity. Moreover, rPfHMGB2 improved the phagocytosis and proliferation activity and upregulated the mRNA expression of the pro-inflammatory cytokine TNFα in yellow catfish PBL. These results indicated that PfHMGB2 could protect yellow catfish from pathogen infection by activating PBL.
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Affiliation(s)
- Yun Wang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Hubei Province, Wuhan, 430056, China; Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Henan Province, Pingdingshan, 467036, China.
| | - Yanyan Yang
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Henan Province, Pingdingshan, 467036, China
| | - Qianying Chen
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Henan Province, Pingdingshan, 467036, China
| | - Hanfei Zhai
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Henan Province, Pingdingshan, 467036, China
| | - Zhaohui Xie
- Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Henan University of Urban Construction, Henan Province, Pingdingshan, 467036, China
| | - Fei Ke
- State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
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Lenka SS, Paichha M, Basu M, Samanta M. LrHMGB1 Shares Structural Similarities with Human HMGB1, and Its Expression Is Induced in Bacterial Infection, Antiviral Vaccination, and Pathogen-Associated Molecular Patterns Stimulation. DNA Cell Biol 2018; 37:708-723. [DOI: 10.1089/dna.2018.4221] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
| | - Mahismita Paichha
- Immunology Laboratory, Fish Health Management Division, Indian Council of Agricultural Research-Central Institute of Freshwater Aquaculture, Bhubaneswar, Odisha, India
| | - Madhubanti Basu
- Immunology Laboratory, Fish Health Management Division, Indian Council of Agricultural Research-Central Institute of Freshwater Aquaculture, Bhubaneswar, Odisha, India
| | - Mrinal Samanta
- Immunology Laboratory, Fish Health Management Division, Indian Council of Agricultural Research-Central Institute of Freshwater Aquaculture, Bhubaneswar, Odisha, India
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Cai X, Gao C, Su B, Tan F, Yang N, Wang G. Expression profiling and microbial ligand binding analysis of high-mobility group box-1 (HMGB1) in turbot (Scophthalmus maximus L.). FISH & SHELLFISH IMMUNOLOGY 2018; 78:100-108. [PMID: 29679761 DOI: 10.1016/j.fsi.2018.04.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 04/12/2018] [Accepted: 04/13/2018] [Indexed: 06/08/2023]
Abstract
High-mobility group box 1 (HMGB1), a highly conserved DNA-binding protein, was involved in nucleosome formation and transcriptional regulation, and could also act as an extracellular cytokine to trigger inflammation and immune responses. In this study, we identified a HMGB1 gene in turbot (Scophthalmus maximus L.). The full-length SaHMGB1 cDNA includes an open reading frame of 615 bp which encoded a 204 amino acid polypeptide with an estimated molecular mass of 23.19 kDa. SaHMGB1 was closely related to several fish HMGB1 and shared 74.4% overall identity with human. In addition, phylogenetic analyses revealed SaHMGB1 showed the closest relationship to Larimichthys crocea. Furthermore, QPCR analysis showed that SaHMGB1 was expressed in all examined tissues with abundant expression levels in brain, gill, intestine, and head kidney, and showed different expression patterns following different bacterial challenge. The significant quick regulation of SaHMGB1 in mucosal surfaces against infection suggest that HMGB1 might play critical roles in mucosal immunity against bacterial challenge. Finally, the in vitro binding assay showed that SaHMGB1 had strong binding ability to LPS, LTA, and PGN. Functional studies should further characterize HMGB1 function to understand the importance of the integrity of the mucosal barriers against infection, and to facilitate selection of the disease resistant family/strain in turbot.
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Affiliation(s)
- Xin Cai
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Chengbin Gao
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Baofeng Su
- National and Local Joint Engineering Laboratory of Freshwater Fish Breeding, Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, People's Republic of China
| | - Fenghua Tan
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
| | - Ning Yang
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, People's Republic of China.
| | - Guodong Wang
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao 266109, People's Republic of China.
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Xin-Peng Z, Yong-Hua H, Yong L, Jing-Jing W, Guang-Hua W, Ren-Jie W, Min Z. A high-mobility group box 1 that binds to DNA, enhances pro-inflammatory activity, and acts as an anti-infection molecule in black rockfish, Sebastes schlegelii. FISH & SHELLFISH IMMUNOLOGY 2016; 56:402-409. [PMID: 27492120 DOI: 10.1016/j.fsi.2016.07.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 07/19/2016] [Accepted: 07/31/2016] [Indexed: 06/06/2023]
Abstract
High-mobility group box (HMGB) 1 is a chromosomal protein that plays critical roles in DNA transcription, replication and repair. In addition, HMGB1 functions as a pro-inflammatory molecule in many vertebrates and invertebrates. In teleosts, very limited studies of HMGB1 have been reported. In this study, we identified a HMGB1 homologue (SsHMGB1) from black rockfish (Sebastes schlegelii) and analyzed its structure, expression and biological function. The open reading frame of SsHMGB1 is 621 bp, with a 5'-untranslated region (UTR) of 62 bp and a 3'-UTR of 645 bp. SsHMGB1 contains two typical HMG boxes and an acidic C-terminal tail. The deduced amino acid sequence of SsHMGB1 shares the highest overall identity (89.4%) with the HMGB1 of Anoplopoma fimbria. The expression of SsHMGB1 occurred in multiple tissues and was highest in the brain. Moreover, the mRNA level of SsHMGB1 in head kidney (HK) macrophages could be induced by Listonella anguillarum in a time-dependent manner. Recombinant SsHMGB1 purified from Escherichia coli (i) bound DNA fragments in a dose-dependent manner; and (ii) induced the expression of cytokines in HK macrophages, including a significant increase in TNF-α activity and enhanced mRNA level of TNF13B and IL-1 β, which are known to be involved in antibacterial defense; moreover, (iii) significantly improved the macrophage bactericidal activity together with reduced pathogen dissemination and replication of bacteria in fish kidney. These results indicated that SsHMGB1 is a novel HMGB1 that possesses apparent immunoregulatory properties and is likely to be involved in fighting bacterial infection.
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Affiliation(s)
- Zhao Xin-Peng
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Hu Yong-Hua
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Liu Yong
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Wang Jing-Jing
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Wang Guang-Hua
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Wang Ren-Jie
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China
| | - Zhang Min
- Marine Science and Engineering College, Qingdao Agricultural University, Qingdao, 266109, China.
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