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Zeng W, Shen D, Wu W, Zhang S, Li Z, Zhang D. Involvement of a catalase gene in lignin catalysis and immune defense against pathogenic fungus in Coptotermes formosanus: a potential new target for termite control. PEST MANAGEMENT SCIENCE 2024; 80:3258-3268. [PMID: 38358092 DOI: 10.1002/ps.8029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 02/09/2024] [Accepted: 02/14/2024] [Indexed: 02/16/2024]
Abstract
BACKGROUND Detoxifying enzymes are likely involved in lignin feeding and immune defense mechanisms within termites, rendering them potential targets for biological control. However, investigations into the dual functionality of termite detoxification enzymes in vivo have not been documented. RESULTS In this study, the complete cDNA of the catalase gene (Cfcat) derived from Coptotermes formosanus Shiraki was amplified. CFCAT comprises an open reading frame spanning 1527 bp, encoding a 508-amino acid sequence. The highest expression was observed in the epidermal tissues (including the fat body and hemolymph) followed by the foregut/salivary gland. Furthermore, we confirmed the catalase activity of the recombinant Cfcat protein. Using RNA interference (RNAi) technology, the importance of Cfcat in the lignin-feeding of C. formosanus was demonstrated, and the role of Cfcat in innate immunity was investigated. Survival assays showed that Cfcat RNAi significantly increased the susceptibility of C. formosanus to Metarhizium anisopliae. Irrespective of the infection status, Cfcat inhibition had a significant impact on multiple factors of humoral and intestinal immunity in C. formosanus. Notably, Cfcat RNAi exhibited a more pronounced immunosuppressive effect on humoral immunity than on intestinal immunity. CONCLUSION Cfcat plays an important role in the regulation of innate immunity and lignin feeding in C. formosanus. Cfcat RNAi can weaken the immune response of termites against M. anisopliae, which may aid the biocontrol efficiency of M. anisopliae against C. formosanus. This study provides a theoretical basis and technical reference for the development of a novel biocontrol strategy targeting detoxifying enzymes of termites. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Wenhui Zeng
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Danni Shen
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
- School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Wenjing Wu
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Shijun Zhang
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Zhiqiang Li
- Guangdong Key Laboratory of Animal Conservation and Resource Utilization, Guangdong Public Laboratory of Wild Animal Conservation and Utilization, Institute of Zoology, Guangdong Academy of Sciences, Guangzhou, China
| | - Dandan Zhang
- School of Ecology, Sun Yat-sen University, Shenzhen, China
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2
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Liu J, Yan P, Li Y, Yu J, Huang Y, Bai R, Liu M, Wang N, Liu L, Zhu J, Xiao J, Guo L, Liu G, Zhang F, Yang X, He B, Zeng J, Zeng X. Gut microbiota and serum metabolome reveal the mechanism by which TCM polysaccharides alleviate salpingitis in laying hens challenged by bacteria. Poult Sci 2024; 103:103288. [PMID: 38064885 PMCID: PMC10749910 DOI: 10.1016/j.psj.2023.103288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 12/29/2023] Open
Abstract
This paper aimed to evaluate the effect of 3 kinds of TCM polysaccharides instead of antibiotics in preventing salpingitis in laying hens. After feeding the laying hens with Lotus leaf polysaccharide, Poria polysaccharide, and Epimedium polysaccharide, mixed bacteria (E. coli and Staphylococcus aureus) were used to infect the oviduct to establish an inflammation model. Changes in antioxidant, serum immunity, anti-inflammatory, gut microbiota, and serum metabolites were evaluated. The results showed that the 3 TCM polysaccharides could increase the expression of antioxidant markers SOD, GSH, and CAT, and reduce the accumulation of MDA in the liver; the contents of IgA and IgM in serum were increased. Decreased the mRNA expression of TLR4, NFκB, TNF-α, IFN-γ, IL1β, IL6, and IL8, and increased the mRNA expression of anti-inflammatory factor IL5 in oviduct tissue. 16sRNA high-throughput sequencing revealed that the 3 TCM polysaccharides improved the intestinal flora disturbance caused by bacterial infection, increased the abundance of beneficial bacteria such as Bacteroides and Actinobacillus, and decreased the abundance of harmful bacteria such as Romboutsia, Turicibacter, and Streptococcus. Metabolomics showed that the 3 TCM polysaccharides could increase the content of metabolites such as 3-hydroxybutyric acid and isobutyl-L-carnitine, and these results could alleviate the further development of salpingitis. In conclusion, the present study has found that using TCM polysaccharides instead of antibiotics was a feasible way to prevent bacterial salpingitis in laying hens, which might make preventing this disease no longer an issue for breeding laying hens.
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Affiliation(s)
- Jiali Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Pupu Yan
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Yana Li
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Jie Yu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Yongxi Huang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Ruonan Bai
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Man Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Ning Wang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Lian Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Jun Zhu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Junhao Xiao
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Liwei Guo
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China.
| | - Guoping Liu
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Fuxian Zhang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Xiaolin Yang
- College of Animal Science and Technology, Yangtze University, Jingzhou, Hubei, China
| | - Bin He
- Institute of Animal Husbandry and Veterinary Medicine, Wuhan Academy of Agricultural Sciences, Wuhan, Hubei, China
| | - Jianguo Zeng
- College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, China
| | - Xiaoqin Zeng
- The First Affiliated Hospital of Yangtze University, Jingzhou, Hubei, China
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Castro JM, Bianchi VA, Felici E, De Anna JS, Venturino A, Luquet CM. Effects of Dietary Copper and Escherichia coli Challenge on the Immune Response and Gill Oxidative Balance in the Freshwater Mussel Diplodon chilensis. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2023; 42:154-165. [PMID: 36282013 DOI: 10.1002/etc.5507] [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: 06/01/2022] [Revised: 07/13/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
Copper is a water and sediment pollutant that can be biomagnified by phytoplankton, and it often co-occurs with fecal bacteria. We addressed the combined effects of copper and Escherichia coli on the immune response and gill oxidative balance of the freshwater mussel Diplodon chilensis. Bivalves were sorted into four groups fed with 1) control algae, 2) bacteria (E. coli), 3) copper-enriched algae (Cu2+ ) algae, and 4) copper-enriched algae followed by bacteria (Cu2+ + E. coli). Cellular and humoral immune and cytotoxic variables were analyzed in hemolymph, and detoxifying/antioxidant enzyme activities (glutathione S-transferase [GST] and catalase [CAT]) and lipid peroxidation (thiobarbituric acid reactive substances [TBARS]) were studied in gill tissue. The total hemocyte number increased after Cu2+ exposure, independently of the E. coli challenge. The proportion of hyalinocytes significantly diminished in the E. coli and Cu2+ groups but not in Cu2+ + E. coli groups; granulocytes significantly increased with E. coli but not with Cu2+ + E. coli treatments. Phagocytic activity was higher in all treatments than in control mussels. Acid phosphatase activity was increased by E. coli and inhibited by Cu2+ and Cu2+ + E. coli. Both E. coli and Cu2+ but not Cu2+ + E. coli augmented alkaline phosphatase activity. The Cu2+ and Cu2+ + E. coli treatments reduced the lysosomal membrane stability and cell viability. Humoral bacteriolytic and phenol oxidase activities were not affected by any treatment. The Cu2+ treatment induced gill CAT and GST activities and increased TBARS levels. The Cu2+ + E. coli treatment reversed this CAT and GST stimulation and increased the Cu2+ effect on TBARS. Dietary Cu2+ affects bivalves' immunological and oxidative status and impairs defensive responses against bacteria. In turn, E. coli potentiates the gill oxidative effects of Cu2+ . Environ Toxicol Chem 2023;42:154-165. © 2022 SETAC.
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Affiliation(s)
- Juan M Castro
- Laboratorio de Ecotoxicología Acuática, Subsede Instituto de Investigaciones en Biodiversidad y Medioambiente-Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional del Comahue, Junín de los Andes, Neuquén, Argentina
| | - Virginia A Bianchi
- Laboratorio de Ecotoxicología Acuática, Subsede Instituto de Investigaciones en Biodiversidad y Medioambiente-Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional del Comahue, Junín de los Andes, Neuquén, Argentina
| | - Emiliano Felici
- Instituto de Química de San Luis, Departamento de Farmacia, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, San Luis, Argentina
| | - Julieta S De Anna
- Laboratorio de Ecotoxicología Acuática, Subsede Instituto de Investigaciones en Biodiversidad y Medioambiente-Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional del Comahue, Junín de los Andes, Neuquén, Argentina
| | - Andrés Venturino
- Centro de Investigaciones en Toxicología Ambiental y Agrobiotecnología del Comahue (CITAAC), Consejo Nacional de Investigaciones Científicas y Técnica-Universidad Nacional del Comahue, Neuquén, Argentina
| | - Carlos M Luquet
- Laboratorio de Ecotoxicología Acuática, Subsede Instituto de Investigaciones en Biodiversidad y Medioambiente-Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional del Comahue, Junín de los Andes, Neuquén, Argentina
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Coates CJ, Söderhäll K. The stress–immunity axis in shellfish. J Invertebr Pathol 2020; 186:107492. [DOI: 10.1016/j.jip.2020.107492] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/06/2020] [Accepted: 10/12/2020] [Indexed: 12/16/2022]
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Shen B, Wei K, Ding Y, Zhang J. Molecular cloning, mRNA expression and functional characterization of a catalase from Chinese black sleeper (Bostrychus sinensis). FISH & SHELLFISH IMMUNOLOGY 2020; 103:310-320. [PMID: 32428652 DOI: 10.1016/j.fsi.2020.04.056] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 04/20/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
In this study, the catalase gene of Chinese black sleeper Bostrychus sinensis (termed as BsCat) was sequenced and characterized. The BsCat, which encodes 525 amino acids, contains a catalase proximal active site signature domain (64FDRERIPERVVHAKGAG80) and a catalase proximal heme-ligand signature domain (354RLFAYPDTH362). The BsCat exhibits high sequence similarity with Cat of other species. Phylogenetic tree reconstruction revealed a close evolutionary relationship of BsCat to catalase genes of other fishes. The results of Real-time PCR showed that the BsCat gene was constitutively expressed in most organs of B. sinensis, with predominant expression detected in liver, followed by peripheral blood and spleen. Moreover, the BsCat gene was significantly changed after either poly (I:C) stimulation or Vibrio parahemolyticus infection in peripheral blood, head kidney, liver and spleen. The enzymatic activity of purified recombinant BsCat (rBsCat) was 2261 ± 96 U/mg. The rBsCat exhibits optimum enzymatic activity at 15 °C and pH 7.0. Our results suggested that the BsCat is involved in the antioxidant defense and host immune response of Chinese black sleeper during pathogen invasion.
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Affiliation(s)
- Bin Shen
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Ke Wei
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Yuehan Ding
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Jianshe Zhang
- National Engineering Research Center of Marine Facilities Aquaculture, Zhejiang Ocean University, Zhoushan, 316004, China.
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Transcriptome Analysis Reveals IsiA-Regulatory Mechanisms Underlying Iron Depletion and Oxidative-Stress Acclimation in Synechocystis sp. Strain PCC 6803. Appl Environ Microbiol 2020; 86:AEM.00517-20. [PMID: 32332138 DOI: 10.1128/aem.00517-20] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/19/2020] [Indexed: 12/22/2022] Open
Abstract
Microorganisms in nature are commonly exposed to various stresses in parallel. The isiA gene encodes an iron stress-induced chlorophyll-binding protein which is significantly induced under iron starvation and oxidative stress. Acclimation of oxidative stress and iron deficiency was investigated using a regulatory mutant of the Synechocystis sp. strain PCC 6803. In this study, the ΔisiA mutant grew more slowly in oxidative-stress and iron depletion conditions compared to the wild-type (WT) counterpart under the same conditions. Thus, we performed transcriptome sequencing (RNA-seq) analysis of the WT strain and the ΔisiA mutant under double-stress conditions to obtain a comprehensive view of isiA-regulated genes. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses showed significant differences between the WT strain and ΔisiA mutant, mainly related to photosynthesis and the iron-sulfur cluster. The deletion of isiA affects the expression of various genes that are involved in cellular processes and structures, such as photosynthesis, phycobilisome, and the proton-transporting ATPase complex. Weighted gene coexpression network analysis (WGCNA) demonstrated three functional modules in which the turquoise module was negatively correlated with superoxide dismutase (SOD) activity. Coexpression network analysis identified several hub genes of each module. Cotranscriptional PCR and reads coverage using the Integrative Genomics Viewer demonstrated that isiA, isiB, isiC, ssl0461, and dfp belonged to the isi operon. Three sRNAs related to oxidative stress were identified. This study enriches our knowledge of IsiA-regulatory mechanisms under iron deficiency and oxidative stress.IMPORTANCE This study analyzed the impact of isiA deletion on the transcriptomic profile of Synechocystis The isiA gene encodes an iron stress-induced chlorophyll-binding protein, which is significantly induced under iron starvation. The deletion of isiA affects the expression of various genes that are involved in photosynthesis and ABC transporters. WGCNA revealed three functional modules in which the blue module was correlated with oxidative stress. We further demonstrated that the isi operon contained the following five genes: isiA, isiB, isiC, ssl0461, and dfp by cotranscriptional PCR. Three sRNAs were identified that were related to oxidative stress. This study enhances our knowledge of IsiA-regulatory mechanisms under iron deficiency and oxidative stress.
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Adzigbli L, Wang Z, Li J, Deng Y. Survival, retention rate and immunity of the black shell colored stocks of pearl oyster Pinctada fucata martensii after grafting operation. FISH & SHELLFISH IMMUNOLOGY 2020; 98:691-698. [PMID: 31693946 DOI: 10.1016/j.fsi.2019.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/25/2019] [Accepted: 11/01/2019] [Indexed: 06/10/2023]
Abstract
We have developed a black shell colored selected line observed to have higher survival ability. In this study, to understand its immune capacity, total carotenoid content (TCC) of the black shell colored line (BG) and the control group (CG) were compared. Survival and retention rates, immunity and antioxidant capacity of BG were compared relative to CG at different times after grafting operation. The results showed that BG had significantly larger TCC than CG (P < 0.05). BG had significantly higher survival and retention rates than CG on days 7, 30 and 360 after grafting (P < 0.05). On days 360, BG had significantly larger pearl thickness than CG (P < 0.05). BG exhibited increased ACP, AKP, SOD, CAT, TAOC and LZ activity than the CG on 0 h, 12 h, 1 d, 3 d, 5 d, 7 d and 30 d after grafting. BG had higher expression levels of Fascin, SOD, CDK-7, CDAP-1, IRAK-1, α2m, GST-1, TRAF-3 and Caspase-2 than CG. The results suggested that BG had higher immune competence and pearl production performances, which is promising to improve pearl quality and production.
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Affiliation(s)
- Linda Adzigbli
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Ziman Wang
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Junhui Li
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Yuewen Deng
- Fishery College, Guangdong Ocean University, Zhanjiang, 524088, China; Pearl Breeding and Processing Engineering Technology Research Center of Guangdong Province, Zhanjiang, 524088, China.
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Differential effects of Th17 cytokines during the response of neutrophils to Burkholderia cenocepacia outer membrane protein A. Cent Eur J Immunol 2020; 44:403-413. [PMID: 32140053 PMCID: PMC7050059 DOI: 10.5114/ceji.2019.92800] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 08/28/2017] [Indexed: 12/11/2022] Open
Abstract
T helper 17 cells are involved in the immunopathology of cystic fibrosis. They play a key role in recruitment of neutrophils, which is the first line of defence against bacteria. Additionally, Burkholderia cenocepacia outer membrane protein A (OmpA) BCAL2958 is considered a potential protective epitope for vaccine development. The present study aimed to investigate the neutrophil response to OmpA in the presence of Th17 cytokines, IL-17 and IL-22 at different times of activation. Neutrophils were isolated from whole blood of healthy volunteers and activated with OmpA in the presence of IL-17, IL-22 or both cytokines together. Supernatant was collected after 1 h, 2 h, 4 h, 8 h, and 12 h. Neutrophil activation was assessed by measuring MPO, TNF-α, elastase, hydrogen peroxide, catalase and NO. The results revealed that the combination of IL-17 and IL-22 cytokines induced the release of NE, catalase, H2O2 and TNF-α from neutrophils activated with Burkholderia OmpA at late stages of activation. However, IL-22 alone or IL-17 alone decreased the myeloperoxidase (MPO), catalase and NE levels at early stages of neutrophil activation. The presence of IL-17 alone led to a significant increase in TNF-α level after 1 h and 12 h. However, the presence of IL-22 alone led to a significant increase in TNF-α level after only 1 h but a significant decrease after 8 h of activation was observed as compared to OmpA stimulated neutrophils. In conclusion, Th17 cytokines IL-17 and IL-22, have differential effects during the neutrophil response to Burkholderia OmpA.
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Zhu N, Yang Y, Xu H, Wang Q, Wei Y, Li M, Li F, Wang Y, Zhang H, Liu Y, Wang X, Fang Y. Bioaccumulation of decabromodiphenyl ether affects the antioxidant system in the clam Mactra veneriformis. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2019; 68:19-26. [PMID: 30861468 DOI: 10.1016/j.etap.2019.03.004] [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: 11/26/2018] [Revised: 02/19/2019] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
Antioxidant enzymes play vital roles against oxidative stress induced by decabromodiphenyl ether (BDE-209), being widespread in marine environment. However, the effect of BDE-209 on antioxidant enzymes remains poorly understood in marine bivalves. In this study, the clams Mactra veneriformis were exposed to 0.1, 1, and 10 μg/L BDE-209 for 7 days and then maintained in clean seawater for 3 days as the depuration. The bioaccumulation of BDE-209 and the effects on superoxide dismutase, catalase, and glutathione peroxidase were investigated. BDE-209 accumulation was concentration-dependent and decreased by 36%-52% after recovery. Malondialdehyde contents increased in a time- and dose-dependent manner. mRNA expression and activity of antioxidant enzymes changed with different patterns and recovered after depuration. These results suggested that antioxidant systems were triggered to protect the clams from oxidative damage caused by BDE-209. Thus, this research is helpful in elucidating the effect of BDE-209 on antioxidant system in marine bivalves.
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Affiliation(s)
- Na Zhu
- School of Agriculture, Ludong University, Yantai, 264025, China
| | - Yanyan Yang
- Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai, 264006, China
| | - Hua Xu
- Yantai Environmental Monitoring Center, Yantai, 264000, China
| | - Qing Wang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Yanyan Wei
- School of Agriculture, Ludong University, Yantai, 264025, China
| | - Mingzhu Li
- School of Agriculture, Ludong University, Yantai, 264025, China
| | - Fan Li
- Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai, 264006, China
| | - Yiqi Wang
- School of Agriculture, Ludong University, Yantai, 264025, China
| | - Huawei Zhang
- Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai, 264006, China
| | - Yihao Liu
- Shandong Provincial Key Laboratory of Restoration for Marine Ecology, Shandong Marine Resource and Environment Research Institute, Yantai, 264006, China
| | - Xiaomeng Wang
- School of Agriculture, Ludong University, Yantai, 264025, China
| | - Yan Fang
- School of Agriculture, Ludong University, Yantai, 264025, China.
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Lu DL, Limbu SM, Lv HB, Ma Q, Chen LQ, Zhang ML, Du ZY. The comparisons in protective mechanisms and efficiencies among dietary α-lipoic acid, β-glucan and l-carnitine on Nile tilapia infected by Aeromonas hydrophila. FISH & SHELLFISH IMMUNOLOGY 2019; 86:785-793. [PMID: 30553889 DOI: 10.1016/j.fsi.2018.12.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 12/05/2018] [Accepted: 12/12/2018] [Indexed: 06/09/2023]
Abstract
Dietary α-lipoic acid (LA), β-glucan (Gluc) and l-carnitine (L-Ca) are commonly used additives to promote fish growth and stress resistance in aquaculture production. However their mechanisms and efficiencies in helping fish to resist diseases have not been compared before. In this study, we fed Nile tilapia (Oreochromis niloticus) with diets containing appropriate doses of LA, Gluc and L-Ca for five weeks and further intraperitoneally injected the fish with Aeromonas hydrophila. After dietary treatment, none of the additives affected the fish growth, but dietary Gluc and L-Ca reduced protein and lipid body contents in fish, respectively. After A. hydrophila challenge, all fish treated with the three dietary additives showed higher survival rate, but those fed on dietary L-Ca had lower survival than those fed on LA and Gluc diets, indicating high protection efficiency of LA and Gluc. The protective mechanisms of the three feed additives were quite different under A. hydrophila infection. Dietary LA induced higher total antioxidant capacity and higher mRNA expression of anti-oxidative genes than other additives in liver and also activated partly the immune function in serum and spleen. Gluc largely increased the immune function by activating the immunity enzymes in serum, inducing inflammation in liver and increasing the expression of immune genes in spleen and head kidney. Gluc also increased partly the antioxidant capacity in serum and liver and lipid catabolism in liver. L-Ca largely increased lipid catabolism in liver while it increased partly the antioxidant capacities in serum and liver. Taken together, these results indicate that, dietary LA, Gluc and L-Ca have various protective mechanisms and differ in their efficiencies on resisting A. hydrophila infection in Nile tilapia.
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Affiliation(s)
- Dong-Liang Lu
- Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, Shanghai, 200241, PR China
| | - Samwel Mchele Limbu
- Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, Shanghai, 200241, PR China; Department of Aquatic Sciences and Fisheries Technology, University of Dar es Salaam, Dar es Salaam, Tanzania
| | - Hong-Bo Lv
- Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, Shanghai, 200241, PR China
| | - Qiang Ma
- Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, Shanghai, 200241, PR China
| | - Li-Qiao Chen
- Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, Shanghai, 200241, PR China
| | - Mei-Ling Zhang
- Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, Shanghai, 200241, PR China
| | - Zhen-Yu Du
- Laboratory of Aquaculture Nutrition and Environmental Health (LANEH), School of Life Sciences, East China Normal University, Shanghai, 200241, PR China.
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Chen W, Yan F, Qin S, Dong H. Molecular cloning, expression analysis, and the immune-related role of a thymosin β in the goldfish, Carassius auratus. FISH PHYSIOLOGY AND BIOCHEMISTRY 2019; 45:427-437. [PMID: 30361821 DOI: 10.1007/s10695-018-0574-1] [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: 02/05/2018] [Accepted: 09/28/2018] [Indexed: 06/08/2023]
Abstract
β-Thymosins play critical roles in the regulation of many important physiological processes, but their function in teleost fishes remains poorly understood. In this study, the full-length cDNA coding for a thymosin β (Tβ) was cloned and identified in goldfish, Carassius auratus (gfTβ). The gfTβ cDNA consisted of 653 bp with an open reading frame of 135 bp that encodes a 44 amino acid polypeptide. Sequence analysis revealed one thymosin domain and a highly conserved actin-binding motif (18LKKTET23). Expression of gfTβ transcript was detected ubiquitously in all tissues examined, with relatively higher levels in the brain, intestine, spleen, gill, skin, kidney, and testis. Cadmium and H2O2 exposure induced increases in gfTβ transcript levels in the liver and spleen. Moreover, gfTβ transcription was upregulated in response to LPS challenge in the spleen while Poly I:C treatment did not affect gfTβ expression. In vivo injection of recombinant gfTβ generated from an Escherichia coli system induced expression of T lymphocyte-related genes (RAG1 and CD8α). These results suggest that gfTβ may be involved in the immune response of teleost fishes via modulation of T lymphocyte development.
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Affiliation(s)
- Wenbo Chen
- Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, Henan, China.
| | - Fangfang Yan
- Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, Henan, China
| | - Shaozong Qin
- Department of Biology, Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, 454000, Henan, China
| | - Haiyan Dong
- Department of Medicine, Huzhou University, Huzhou, 313000, Zhejiang, China.
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Zhang HC, Ma KX, Yang YJ, Shi CY, Chen GW, Liu DZ. Molecular cloning, characterization, expression and enzyme activity of catalase from planarian Dugesia japonica in response to environmental pollutants. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 165:88-95. [PMID: 30193168 DOI: 10.1016/j.ecoenv.2018.08.083] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 06/30/2018] [Accepted: 08/21/2018] [Indexed: 06/08/2023]
Abstract
Catalase (CAT) is an important antioxidant enzyme that protects aerobic organisms against oxidative damage by degrading hydrogen peroxide to oxygen and water. CAT mRNAs have been cloned from many species and employed as useful biomarkers of oxidative stress. In the present study, we cloned the cDNA sequence of CAT gene from freshwater planarian Dugesia japonica (designated as DjCAT) by means of RACE method. Sequence analysis and multiple alignment jointly showed that the full-length cDNA sequence consists of 1734 nucleotides, encoding 506 amino acids. Three catalytic amino acid residues of His71, Asn144 and Tyr354, two CAT family signature sequences of a proximal active site signature (60FDRERIPERVVHAKGGGA77) and a heme-ligand signature motif (350RLFSYRDTQ358) are highly conserved, suggesting that the DjCAT belongs to the NADPH and heme-binding CAT family and has similar functions. In addition, the transcriptional level of CAT gene and activity of CAT enzyme upon acute exposure of environmental pollutants glyphosate and 1-decyl-3-methylimidazolium bromide ([C10mim]Br) were investigated systematically. The variation of CAT mRNA expression in D. japonica was quantified by real-time PCR and the results indicated that it was up-regulated after exposure to glyphosate or [C10mim]Br with a dose-dependent manner but not linearly. Even though the variation trend of CAT activity upon glyphosate stress was not monotonously increased and inconsistent with that after [C10mim]Br exposure on day 1 and 3 sampling time, with the duration prolonged to day 5 they both presented a dose-dependent increase and the differences achieved extreme significance in all treated groups compared to the control. These findings suggested that DjCAT plays an important role in antioxidant defense in D. japonica, and the mRNA expression of CAT would also be used as an effective biomarker to monitor the pollution in aquatic environment just like its corresponding enzyme.
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Affiliation(s)
- He-Cai Zhang
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Ke-Xue Ma
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Yu-Juan Yang
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Chang-Ying Shi
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Guang-Wen Chen
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China.
| | - De-Zeng Liu
- Institute of Natural Resources, Heilongjiang Academy of Science, Harbin 150031, China
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Xiao S, Wong NK, Li J, Lin Y, Zhang Y, Ma H, Mo R, Zhang Y, Yu Z. Analysis of in situ Transcriptomes Reveals Divergent Adaptive Response to Hyper- and Hypo-Salinity in the Hong Kong Oyster, Crassostrea hongkongensis. Front Physiol 2018; 9:1491. [PMID: 30416453 PMCID: PMC6212563 DOI: 10.3389/fphys.2018.01491] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 10/02/2018] [Indexed: 02/05/2023] Open
Abstract
Crassostrea hongkongensis, a commercially valuable aquaculture species dwelling in estuaries along the coast of the South China Sea, is remarkable for its eurysalinity traits that enable its successful colonization of diverse osmotic niches ranging from near freshwater to seawater. In order to elucidate how this oyster copes with coastal waters with immense salinity differences, we performed in situ transcriptomic analysis (RNA-seq) to characterize the global expression patterns of oysters distributed across naturally formed salinity gradients in Zhenhai Bay along the northern coast of the South China Sea. Principal component analysis reveals distinct expression profiles of oysters living in the extreme conditions of hypo-salinity and hyper-salinity. Compared with the situation of optimal salinity for oyster growth, hypo-salinity mainly regulated expression of genes involved in FoxO and oxytocin signaling, tight junction and several immune pathways, while hyper-salinity altered gene expression implicated in amino acid metabolism, AMPK and PI3K-AKt signaling pathways, demonstrating the complexity and plasticity of transcriptomic expression underpinning oyster eurysalinity. Furthermore, the expression patterns of several genes correlated with salinity gradients reveals the fine-tuned coordination of molecular networks necessary for adaptive homeostasis in C. hongkongensis. In conclusion, a striking capacity and distinct patterns of transcriptomic expression contribute to eurysalinity adaptation in C. hongkongensis, which provides new mechanistic insights into the adaptive plasticity and resilience of marine mollusks.
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Affiliation(s)
- Shu Xiao
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Nai-Kei Wong
- State Key Discipline of Infection Diseases, Shenzhen Third People's Hospital, Shenzhen, China
| | - Jun Li
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Yue Lin
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Yuehuan Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Haitao Ma
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Riguan Mo
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Yang Zhang
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Ziniu Yu
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
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14
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Caspase -1, -3, -8 and antioxidant enzyme genes are key molecular effectors following Vibrio parahaemolyticus and Aeromonas veronii infection in fish leukocytes. Immunobiology 2018; 223:562-576. [DOI: 10.1016/j.imbio.2018.07.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 06/26/2018] [Accepted: 07/02/2018] [Indexed: 01/01/2023]
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15
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Zhao Q, Wu B, Liu Z, Sun X, Zhou L, Yang A, Zhang G. Molecular cloning, expression and biochemical characterization of hemoglobin gene from ark shell Scapharca broughtonii. FISH & SHELLFISH IMMUNOLOGY 2018; 78:60-68. [PMID: 29649584 DOI: 10.1016/j.fsi.2018.03.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Revised: 03/13/2018] [Accepted: 03/17/2018] [Indexed: 06/08/2023]
Abstract
Hemoglobin, the main component of haemolymph, is widely distributed in animals. Although its important oxygen transport functions has been extensively reported, studies on the immune function of hemoglobin in mollusc are few. Research on immune of hemoglobin of ark shell Scapharca broughtonii attracted more and more attention due to its ownership of erythrocyte comparing with many other shellfish. In this study, the hemoglobin cDNA of S. broughtonii was cloned by EST and RACE methods (named as SbHb). Sequence analysis revealed that the cDNA was 946 bp in length, including an open reading frame (ORF) of 459 bp which encoded a polypeptide of 152 amino acid residues, and a 5'-untranslated region (UTR) of 313 bp, a 3'-UTR of 174 bp. Sequence and homology analysis showed that the SbHb shared similarity with that of other related species. The mRNA expression profiles of SbHb in tested tissues analyzed by quantitative real-time PCR (qRT-PCR) revealed that the mRNA of SbHb could be all detected in foot, gill, mantle, adductor muscle, haemocytes and hepatopancreas, and the highest level was found in the haemocytes, which is 163.2 times higher than that in adductor muscle. Vibrio anguillarum stimulation and hypoxia treatment both had significant impact on the expression of SbHb, which showed the same trends as increasing first to the highest at 16 h after treatment and then followed by declining. Recombinant protein of SbHb (rSbHb) was successfully obtained by prokaryotic expression, and further function analysis indicated obviously that the rSbHb had very strong phenoloxidase-like activity (PO-like activity) and it could remarkably inhibit growth of gram-negative bacteria V. anguillarum. All the data suggested that the SbHb plays a significant role in the process of antibacterial and anoxia tolerance reaction in S. broughtonii, providing the evidence that SbHb is a key immune factor.
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Affiliation(s)
- Qing Zhao
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, PR China
| | - Biao Wu
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266273, PR China
| | - Zhihong Liu
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266273, PR China.
| | - Xiujun Sun
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266273, PR China
| | - Liqing Zhou
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266273, PR China
| | - Aiguo Yang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266273, PR China
| | - Gaowei Zhang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, PR China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai 201306, PR China
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16
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Wang L, Song X, Song L. The oyster immunity. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 80:99-118. [PMID: 28587860 DOI: 10.1016/j.dci.2017.05.025] [Citation(s) in RCA: 181] [Impact Index Per Article: 30.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/21/2017] [Accepted: 05/21/2017] [Indexed: 06/07/2023]
Abstract
Oysters, the common name for a number of different bivalve molluscs, are the worldwide aquaculture species and also play vital roles in the function of ecosystem. As invertebrate, oysters have evolved an integrated, highly complex innate immune system to recognize and eliminate various invaders via an array of orchestrated immune reactions, such as immune recognition, signal transduction, synthesis of antimicrobial peptides, as well as encapsulation and phagocytosis of the circulating haemocytes. The hematopoietic tissue, hematopoiesis, and the circulating haemocytes have been preliminary characterized, and the detailed annotation of the Pacific oyster Crassostrea gigas genome has revealed massive expansion and functional divergence of innate immune genes in this animal. Moreover, immune priming and maternal immune transfer are reported in oysters, suggesting the adaptability of invertebrate immunity. Apoptosis and autophagy are proved to be important immune mechanisms in oysters. This review will summarize the research progresses of immune system and the immunomodulation mechanisms of the primitive catecholaminergic, cholinergic, neuropeptides, GABAergic and nitric oxidase system, which possibly make oysters ideal model for studying the origin and evolution of immune system and the neuroendocrine-immune regulatory network in lower invertebrates.
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Affiliation(s)
- Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, DalianOcean University, Dalian 116023, China
| | - Xiaorui Song
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, DalianOcean University, Dalian 116023, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, DalianOcean University, Dalian 116023, China.
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17
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Huang Q, Yu M, Chen H, Zeng M, Sun Y, Saha TT, Chen D. LRFN (leucine-rich repeat and fibronectin type-III domain-containing protein) recognizes bacteria and promotes hemocytic phagocytosis in the Pacific oyster Crassostrea gigas. FISH & SHELLFISH IMMUNOLOGY 2018; 72:622-628. [PMID: 29190588 DOI: 10.1016/j.fsi.2017.11.049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2017] [Revised: 11/23/2017] [Accepted: 11/24/2017] [Indexed: 06/07/2023]
Abstract
In bivalve mollusks, circulating hemocyte mediated phagocytosis is one of the primary ways to eliminate invading microbes. Here, we have identified one CgLRFN (leucine-rich repeat and fibronectin type-III domain-containing protein) in the Crassostrea gigas as a novel transmembrane LRR (Leucine-rich repeat) domain containing protein in C. gigas, homologous to the jawless fish VLR protein, that plays an important role in recognizing bacteria and promoting hemocytic phagocytosis. Tissue distribution analysis of CgLRFN in Pacific oyster showed that it is widely expressed in various tissues like the gills, adductor muscles, digestive glands, gonads, heart and in the hemocytes. Furthermore, infection of Pacific oysters with two marine Vibrio strains V. alginolyticus and V. parahaemolyticus was found to significantly increase CgLRFN expression in the hemocytes. Analysis of subcellular localization showed that CgLRFN is primarily localized in the cell membrane. Additionally, CgLRFN was found to be able to bind both the bacterial strains, indicating its possible role as a cell surface receptor. Flow cytometry analysis revealed that CgLRFN coated bacteria was phagocytosed by oyster hemocytes at a significantly higher rate compared to the uncoated bacteria. Finally, RNAi mediated knockdown of CgLRFN in vivo resulted in reduced clearance of both the bacterial strains from the oyster hemolymph. Overall, our study demonstrates that CgLRFN acts as a pattern recognition receptor for Vibrio spp. and promotes hemocytic phagocytosis in the Pacific oyster, which is critical for understanding the mechanism of bacterial infection in lower invertebrates, and also contributes to disease management of this economically and ecologically important marine mollusk.
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Affiliation(s)
- Qingsong Huang
- School of Basic Courses of Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Mingjia Yu
- State Key Laboratory Breeding Base of Marine Genetic Resources, Key Laboratory of Marine Genetic Resources, Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China.
| | - Hongmei Chen
- School of Basic Courses of Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Manhong Zeng
- School of Basic Courses of Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yan Sun
- School of Basic Courses of Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Tusar T Saha
- Institute for Integrative Genomic Biology, University of California, Riverside, CA 92521, USA
| | - Dongbo Chen
- School of Basic Courses of Guangdong Pharmaceutical University, Guangzhou 510006, China.
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18
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Liu X, Wang WX. Antioxidant and detoxification responses of oysters Crassostrea hongkongensis in a multimetal-contaminated estuary. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2016; 35:2798-2805. [PMID: 27071024 DOI: 10.1002/etc.3455] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2016] [Revised: 02/29/2016] [Accepted: 04/07/2016] [Indexed: 06/05/2023]
Abstract
The contaminated oysters discovered in the Pearl River Estuary (Guangdong province, China) contained high levels of metals in their tissues, especially Cu and Zn, indicating that this large and densely urbanized estuary in Southern China suffers from serious metal pollution. The present study aimed to investigate the impacts of multimetal pollution in the Pearl River Estuary on oyster antioxidant and detoxification systems. The responses of various biochemical biomarkers in the ecologically important oyster Crassostrea hongkongensis collected from 7 sites in the Pearl River Estuary were quantified. Significant correlations were demonstrated between the accumulation of Cu and Zn and oxidative stress (lipid peroxidation) and oxidative stress defenses (catalase, glutathione peroxidase) in the oyster gills. Significant correlations between the accumulation of Cd and Cu and detoxification (glutathione and glutathione transferase) in the gills were also documented. Interestingly, metallothionein concentrations were positively correlated with Cd, but negatively correlated with Cu, Ni, and Zn concentrations in the gills. These measurements indicated that Cu in the Pearl River Estuary induced various biochemical responses in the oysters and influenced the susceptibility of oysters to environmental stress. The present study has provided the first evidence of antioxidant and detoxification responses in native contaminated oysters from a field environment seriously contaminated by metals. Coupling biomarkers with tissue metal concentration measurements was a promising approach to identify the metals causing biological impacts in a multimetal-contaminated estuary. Environ Toxicol Chem 2016;35:2798-2805. © 2016 SETAC.
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Affiliation(s)
- Xuan Liu
- Division of Life Science, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong
| | - Wen-Xiong Wang
- Division of Life Science, The Hong Kong University of Science and Technology, Clearwater Bay, Kowloon, Hong Kong.
- Shenzhen Research Institute, The Hong Kong University of Science and Technology, Shenzhen, China.
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19
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Lüchmann KH, Clark MS, Bainy ACD, Gilbert JA, Craft JA, Chipman JK, Thorne MAS, Mattos JJ, Siebert MN, Schroeder DC. Key metabolic pathways involved in xenobiotic biotransformation and stress responses revealed by transcriptomics of the mangrove oyster Crassostrea brasiliana. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2015; 166:10-20. [PMID: 26186662 DOI: 10.1016/j.aquatox.2015.06.012] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 06/25/2015] [Accepted: 06/26/2015] [Indexed: 06/04/2023]
Abstract
The Brazilian oyster Crassostrea brasiliana was challenged to three common environmental contaminants: phenanthrene, diesel fuel water-accommodated fraction (WAF) and domestic sewage. Total RNA was extracted from the gill and digestive gland, and cDNA libraries were sequenced using the 454 FLX platform. The assembled transcriptome resulted in ̃20,000 contigs, which were annotated to produce the first de novo transcriptome for C. brasiliana. Sequences were screened to identify genes potentially involved in the biotransformation of xenobiotics and associated antioxidant defence mechanisms. These gene families included those of the cytochrome P450 (CYP450), 70kDa heat shock, antioxidants, such as glutathione S-transferase, superoxide dismutase, catalase and also multi-drug resistance proteins. Analysis showed that the massive expansion of the CYP450 and HSP70 family due to gene duplication identified in the Crassostrea gigas genome also occurred in C. brasiliana, suggesting these processes form the base of the Crassostrea lineage. Preliminary expression analyses revealed several candidates biomarker genes that were up-regulated during each of the three treatments, suggesting the potential for environmental monitoring.
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Affiliation(s)
- Karim H Lüchmann
- Fishery Engineering Department, Santa Catarina State University, Laguna, Brazil.
| | - Melody S Clark
- British Antarctic Survey, Natural Environment Research Council, Cambridge, UK.
| | - Afonso C D Bainy
- Biochemistry Department, Federal University of Santa Catarina, Florianópolis, Brazil.
| | - Jack A Gilbert
- Biosciences Division (BIO), Argonne National Laboratory, Argonne, USA; Department of Ecology and Evolution, University of Chicago, Chicago, USA; Marine Biological Laboratory, Woods Hole, USA; College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, China.
| | - John A Craft
- Biological and Biomedical Sciences, Glasgow Caledonian University, Glasgow, UK.
| | - J Kevin Chipman
- School of Biological Sciences, The University of Birmingham, Birmingham, UK.
| | - Michael A S Thorne
- British Antarctic Survey, Natural Environment Research Council, Cambridge, UK.
| | - Jacó J Mattos
- Biochemistry Department, Federal University of Santa Catarina, Florianópolis, Brazil.
| | - Marília N Siebert
- Biochemistry Department, Federal University of Santa Catarina, Florianópolis, Brazil.
| | - Declan C Schroeder
- Marine Biological Association of the United Kingdom (MBA), Plymouth, UK.
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Dong C, Zheng X, Diao Y, Wang Y, Zhou M, Hu Z. Molecular Cloning and Expression Analysis of a Catalase Gene (NnCAT) from Nelumbo nucifera. Appl Biochem Biotechnol 2015; 177:1216-28. [PMID: 26299377 DOI: 10.1007/s12010-015-1808-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Accepted: 08/12/2015] [Indexed: 11/26/2022]
Abstract
Rapid amplification cDNA end (RACE) assay was established to achieve the complete cDNA sequence of a catalase gene (NnCAT) from Nelumbo nucifera. The obtained full-length cDNA was 1666 bp in size and contained a 1476-bp open reading frame. The 3D structural model of NnCAT was constructed by homology modeling. The putative NnCAT possessed all the main characteristic amino acid residues and motifs of catalase (CAT) protein family, and the phylogenetic analysis revealed that NnCAT grouped together with high plants. Moreover, recombinant NnCAT showed the CAT activity (758 U/mg) at room temperature, holding high activity during temperature range of 20-50 °C, then the optimal pH of recombinant protein was assessed from pH 4 to pH 11. Additionally, real-time PCR assay demonstrated that NnCAT mRNA was expressed in various tissues of N. nucifera, with the highest expression in young leaf and lowest level in the root, and mRNA level of NnCAT was significantly augmented in response to short-time mechanical wounding. Different expression pattern of NnCAT gene suggested that NnCAT probably played a defensive role in the initial stages of oxidative stress, regulating the level of reactive oxygen species (ROS) by extracellular stimuli such as short-time mechanical wounding.
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Affiliation(s)
- Chen Dong
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan, 450051, China
| | - Xingfei Zheng
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, 430072, China
| | - Ying Diao
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, 430072, China
| | - Youwei Wang
- Lotus Center, Wuhan University, Wuhan, 430072, China
| | - Mingquan Zhou
- Lotus Center, Wuhan University, Wuhan, 430072, China
| | - Zhongli Hu
- State Key Laboratory of Hybrid Rice, College of Life Science, Wuhan University, Wuhan, 430072, China.
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Transcriptomics Analysis of Crassostrea hongkongensis for the Discovery of Reproduction-Related Genes. PLoS One 2015; 10:e0134280. [PMID: 26258576 PMCID: PMC4530894 DOI: 10.1371/journal.pone.0134280] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2015] [Accepted: 07/07/2015] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND The reproductive mechanisms of mollusk species have been interesting targets in biological research because of the diverse reproductive strategies observed in this phylum. These species have also been studied for the development of fishery technologies in molluscan aquaculture. Although the molecular mechanisms underlying the reproductive process have been well studied in animal models, the relevant information from mollusks remains limited, particularly in species of great commercial interest. Crassostrea hongkongensis is the dominant oyster species that is distributed along the coast of the South China Sea and little genomic information on this species is available. Currently, high-throughput sequencing techniques have been widely used for investigating the basis of physiological processes and facilitating the establishment of adequate genetic selection programs. RESULTS The C.hongkongensis transcriptome included a total of 1,595,855 reads, which were generated by 454 sequencing and were assembled into 41,472 contigs using de novo methods. Contigs were clustered into 33,920 isotigs and further grouped into 22,829 isogroups. Approximately 77.6% of the isogroups were successfully annotated by the Nr database. More than 1,910 genes were identified as being related to reproduction. Some key genes involved in germline development, sex determination and differentiation were identified for the first time in C.hongkongensis (nanos, piwi, ATRX, FoxL2, β-catenin, etc.). Gene expression analysis indicated that vasa, nanos, piwi, ATRX, FoxL2, β-catenin and SRD5A1 were highly or specifically expressed in C.hongkongensis gonads. Additionally, 94,056 single nucleotide polymorphisms (SNPs) and 1,699 simple sequence repeats (SSRs) were compiled. CONCLUSIONS Our study significantly increased C.hongkongensis genomic information based on transcriptomics analysis. The group of reproduction-related genes identified in the present study constitutes a new tool for research on bivalve reproduction processes. The large group of molecular markers discovered in this study will be useful for population screening and marker assisted selection programs in C.hongkongensis aquaculture.
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Wang C, Yue X, Lu X, Liu B. The role of catalase in the immune response to oxidative stress and pathogen challenge in the clam Meretrix meretrix. FISH & SHELLFISH IMMUNOLOGY 2013; 34:91-9. [PMID: 23079536 DOI: 10.1016/j.fsi.2012.10.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2012] [Revised: 10/01/2012] [Accepted: 10/07/2012] [Indexed: 05/10/2023]
Abstract
Catalase (CAT) can effectively eliminate H(2)O(2) and maintain the redox balance of immune system, which is essential for innate immunity. A catalase gene was cloned and its potential role in immune system was investigated in the clam, Meretrix meretrix. The catalase (MmeCAT) gene had an open reading frame of 1533 bp encoding 511 amino acids which showed high identity with that of molluscs. The distribution of MmeCAT in clam tissues was examined and the mRNA, protein expression and CAT activity paralleled with each other, with the highest expression in hepatopancreas. In response to H(2)O(2) challenge, MmeCAT mRNA showed significantly higher expression at 12 h and 24 h post-challenge in experimental clams than in control clams (P < 0.05). Meanwhile, the protein expression in experimental clams was increased to about 3 times as much as that in control clams at 6 h post-challenge. After injection with a Vibrio parahaemolyticus-related bacterium (MM21), the expression of MmeCAT mRNA was significantly up-regulated at 12 h and 24 h post-injection (P < 0.05). It suggested that MmeCAT might be involved in the immune response to Vibrio infection. To better understand the role of MmeCAT in immune system, its mRNA expression was compared between a Vibrio-resistant population and a control population after immersion challenge with MM21. The continuously increased transcription in resistant population suggested MmeCAT could benefit the immune system of clams to defend against pathogen infection. Our study indicated that the redox balance was essential for M. meretrix to resist pathogen infection.
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Affiliation(s)
- Chao Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
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Timmins‐Schiffman EB, Friedman CS, Metzger DC, White SJ, Roberts SB. Genomic resource development for shellfish of conservation concern. Mol Ecol Resour 2012; 13:295-305. [DOI: 10.1111/1755-0998.12052] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 11/16/2012] [Accepted: 11/20/2012] [Indexed: 01/23/2023]
Affiliation(s)
| | - Carolyn S. Friedman
- University of Washington School of Aquatic and Fishery Sciences Box 355020 Seattle WA 98195 USA
| | - Dave C. Metzger
- University of Washington School of Aquatic and Fishery Sciences Box 355020 Seattle WA 98195 USA
| | - Samuel J. White
- University of Washington School of Aquatic and Fishery Sciences Box 355020 Seattle WA 98195 USA
| | - Steven B. Roberts
- University of Washington School of Aquatic and Fishery Sciences Box 355020 Seattle WA 98195 USA
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