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Yang B, Li Q, Zhang M, Lin S, Shen X, Du Z. Molecular cloning and functional characterization of peroxiredoxin 4 (prx 4) in freshwater crayfish, Procambarus clarkii. FISH & SHELLFISH IMMUNOLOGY 2023; 137:108781. [PMID: 37127188 DOI: 10.1016/j.fsi.2023.108781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 04/25/2023] [Accepted: 04/28/2023] [Indexed: 05/03/2023]
Abstract
Peroxiredoxin (Prx), which is a newly discovered member of the antioxidant protein family, performs important biological functions in intracellular signal transduction. In the present study, a peroxiredoxin 4 gene was cloned from crayfish for the first time and named Pc-prx 4. According to the amino acid sequence signature, Pc-Prx 4 was identified as the typical 2-Cys Prx molecule, which possessed two conserved cysteines (Cys98 and Cys219). Time-course expression patterns post V. harveyi infection revealed that Pc-prx 4 was likely related to crayfish innate immune defense responses. In particular, the highest fold upregulation of the Pc-prx 4 mRNA transcript reached approximately 170 post V. harveyi infection in the crayfish hepatopancreas. The results of the mixed functional oxidase assay showed that rPc-Prx 4△ could resist the damaging effect of reactive oxygen species generated from the thiol/Fe3+/O2- reaction system to some extent. In addition, the results of the RNAi assay revealed that the crayfish survival rate was obviously increased post injection of V. harveyi when Pc-prx 4 was knocked down. Further study revealed that both hemolymph melanization and PO activity were strengthened to different degrees in the RNAi assay. Therefore, we speculated that the increase in the crayfish survival rate was likely due to the increase in hemolymph melanization. The obviously reinforced hemolymph melanization was directly caused by the upregulation of hemolymph PO activity, which was induced by the knockdown of Pc-prx 4. However, further studies are still indispensable for illuminating the molecular mechanism of Pc-prx 4 in the crayfish innate immune defense system.
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Affiliation(s)
- Bingbing Yang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Qianqian Li
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Mingda Zhang
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Sihan Lin
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Xiuli Shen
- Library, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China
| | - Zhiqiang Du
- School of Life Science and Technology, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia autonomous region, 014010, China.
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Cao X, Lu W, Gang Y, Hu B, Wen C. Prx5 of Cristaria plicata has antioxidant function and is regulated by Nrf2/ARE signaling pathway. FISH & SHELLFISH IMMUNOLOGY 2023; 134:108548. [PMID: 36690268 DOI: 10.1016/j.fsi.2023.108548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/09/2023] [Accepted: 01/12/2023] [Indexed: 06/17/2023]
Abstract
Cristaria plicata is one of the more important freshwater pearl bivalves in China, which is susceptible to pathogen infection, and greatly impacts the ability of breeding pearls. Nrf2/ARE signaling pathway and its downstream target gene Prx5 have endogenous antioxidant functions to protect cells from oxidative damage. The full-length cDNA of Prx5 was cloned from C. Plicata, which was 1420 bp, encoding a total of 189 amino acids and had two conserved cysteine residues (Cys78 and Cys179). The amino acid sequence of CpPrx5 was highly similar to Prx5 of other species. Real-time fluorescence quantitative PCR showed that CpPrx5 was distributed in various tissues of mussels, and the highest expression was in hepatopancreas. The expression of CpPrx5 up-regulated in hepatopancreas and gills after LPS, PGN and Poly:I:C stimulation. The recombinant plasmid DE3-PGEX-4T-1-CpPrx5 was expressed in Escherichia coli BL21 and showed antioxidant activity. With the increase of CpPrx5 protein concentration, the superhelical form of DNA was protected. The expression of CpPrx5 was up-regulated after interference CpKeap1 and down-regulated after interference CpNrf2. Gel block assay showed that CpNrf2 and CpMafK proteins blocked CpPrx5 promoter. Subcellular localization showed that CpPrx5 was located in 293T nucleus and cytoplasm and CpMafK was located in 293T nucleus. GST-Pull down verified that CpMafK and CpPrx5 could bind in vitro. These results indicated that Prx5 had antioxidant function and could protects DNA from oxidative damage, and participated in transcriptional regulation by combining with the transcription factor MafK. In addition, MafK could combine with Nrf2 to regulate the downstream target gene Prx5.
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Affiliation(s)
- Xinying Cao
- College of Life Science, Education Ministry Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, 330031, China
| | - Wuting Lu
- College of Life Science, Education Ministry Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, 330031, China.
| | - Yang Gang
- College of Life Science, Education Ministry Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, 330031, China
| | - Baoqing Hu
- College of Life Science, Education Ministry Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, 330031, China.
| | - Chungen Wen
- College of Life Science, Education Ministry Key Laboratory of Poyang Lake Environment and Resource Utilization, Nanchang University, Nanchang, 330031, China.
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Deng H, Xian D, Lian T, He M, Li J, Xu X, Guo Z, He J, Weng S. A Dicer2 from Scylla paramamosain activates JAK/STAT signaling pathway to restrain mud crab reovirus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2022; 127:104267. [PMID: 34626689 DOI: 10.1016/j.dci.2021.104267] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/15/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
A Dicer2 gene from Scylla paramamosain, named SpDicer2, was cloned and characterized. The full length of SpDicer2 mRNA contains a 121 bp 5'untranslated region (UTR), an open reading frame (ORF) of 4518 bp and a 3' UTR of 850 bp. The SpDicer2 protein contains seven characteristic Dicer domains and showed 34%-65% identity and 54%-79% similarity to other Dicer protein domains, respectively. The mRNA of SpDicer2 was high expressed in hemocytes, intestine and gill and low expressed in the eyestalk and muscle. Moreover, expression of SpDicer2 was significantly responsive to challenges by mud crab reovirus (MCRV), Poly(I:C), LPS, Staphylococcus aureus and Vibrio parahaemolyticus. SpDicer2 was dispersedly presented in the cytoplasm except for a small amount in the nucleus. SpDicer2 could activate SpSTAT to translocate from the cytoplasm to the nucleus, and significantly increase the transcription activity of the wsv069 promoter, suggesting that SpDicer2 activated the JAK/STAT pathway. Furthermore, silencing of SpDicer2 in vivo increased the mortality of MCRV infected mud crab and the viral load in tissues and down-regulated the expression of multiple components of Toll, IMD and JAK-STAT pathways and almost all the examined immune effector genes. These results suggested that SpDicer2 could play an important role in defense against MCRV via activating the JAK/STAT signaling pathways in mud crab.
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Affiliation(s)
- Hengwei Deng
- State Key Laboratory for Biocontrol / School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), 519000, Zhuhai, PR China
| | - Danrong Xian
- Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, PR China; State Key Laboratory for Biocontrol, School of Marine Sciences, Sun Yat-sen University, Guangzhou, China
| | - Taixin Lian
- State Key Laboratory for Biocontrol / School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, PR China
| | - Mingyu He
- State Key Laboratory for Biocontrol / School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, PR China
| | - Jingjing Li
- State Key Laboratory for Biocontrol / School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, PR China
| | - Xiaopeng Xu
- State Key Laboratory for Biocontrol / School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), 519000, Zhuhai, PR China
| | - Zhixun Guo
- South China Sea Fisheries Research Institute (CAFS), Guangzhou, PR China
| | - Jianguo He
- State Key Laboratory for Biocontrol / School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), 519000, Zhuhai, PR China; State Key Laboratory for Biocontrol, School of Marine Sciences, Sun Yat-sen University, Guangzhou, China.
| | - Shaoping Weng
- State Key Laboratory for Biocontrol / School of Life Sciences, Sun Yat-sen University, Guangzhou, PR China; Guangdong Province Key Laboratory for Aquatic Economic Animals, Sun Yat-sen University, PR China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), 519000, Zhuhai, PR China.
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Yang Y, Zhang Y, Yang C, Fang F, Wang Y, Chang H, Chen Z, Chen P. Differential mitochondrial proteomic analysis of A549 cells infected with avian influenza virus subtypes H5 and H9. Virol J 2021; 18:39. [PMID: 33602268 PMCID: PMC7891018 DOI: 10.1186/s12985-021-01512-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 02/08/2021] [Indexed: 01/14/2023] Open
Abstract
Background Both the highly pathogenic avian influenza (HPAI) H5N1 and low pathogenic avian influenza (LPAI) H9N2 viruses have been reported to cross species barriers to infect humans. H5N1 viruses can cause severe damage and are associated with a high mortality rate, but H9N2 viruses do not cause such outcomes. Our purpose was to use proteomics technology to study the differential expression of mitochondrial-related proteins related to H5N1 and H9N2 virus infections.
Methods According to the determined viral infection titer, A549 cells were infected with 1 multiplicity of infection virus, and the mitochondria were extracted after 24 h of incubation. The protein from lysed mitochondria was analyzed by the BCA method to determine the protein concentration, as well as SDS-PAGE (preliminary analysis), two-dimensional gel electrophoresis, and mass spectrometry. Differential protein spots were selected, and Western blotting was performed to verify the proteomics results. The identified proteins were subjected to GO analysis for subcellular localization, KEGG analysis for functional classification and signaling pathways assessment, and STRING analysis for functional protein association network construction. Results In the 2-D gel electrophoresis analysis, 227 protein spots were detected in the H5N1-infected group, and 169 protein spots were detected in the H9N2-infected group. Protein spots were further subjected to mass spectrometry identification and removal of redundancy, and 32 differentially expressed proteins were identified. Compared with the H9N2 group, the H5N1-infected group had 16 upregulated mitochondrial proteins and 16 downregulated proteins. The differential expression of 70-kDa heat shock protein analogs, short-chain enoyl-CoA hydratase, malate dehydrogenase, and ATP synthase was verified by Western blot, and the results were consistent with the proteomics findings. Functional analysis indicated that these differentially expressed proteins were primarily involved in apoptosis and metabolism. Conclusions Compared with their expression in the H9N2 group, the differential expression of eight mitochondrial proteins in the H5N1 group led to host T cell activation, antigen presentation, stress response, ATP synthesis and cell apoptosis reduction, leading to higher pathogenicity of H5N1 than H9N2. Supplementary Information The online version contains supplementary material available at 10.1186/s12985-021-01512-4.
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Affiliation(s)
- Yuting Yang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Yun Zhang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Changcheng Yang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Fang Fang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Ying Wang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China
| | - Haiyan Chang
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.
| | - Ze Chen
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China. .,Shanghai Institute of Biological Products, Shanghai, 200052, China.
| | - Ping Chen
- College of Life Sciences, Hunan Normal University, Changsha, 410081, Hunan, China.
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Zhang Y, Mi K, Ding X, Li Y, Wang T, Dou T, Ding J, Wei W. Characterization of a classical 2-cysteine peroxiredoxin1 gene from Chinese soft-shelled turtle Pelodiscus sinensis with its potent antioxidant properties and putative immune response. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 101:103456. [PMID: 31336106 DOI: 10.1016/j.dci.2019.103456] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 07/19/2019] [Accepted: 07/19/2019] [Indexed: 06/10/2023]
Abstract
Peroxiredoxin family members could function in host defense against oxidative stress, and modulate immune response. In the present study, a 2-cysteine peroxiredoxin gene named PsPrx1 was isolated from Chinese soft-shelled turtle Pelodiscus sinensis. The PsPrx1 cDNA was composed of 1130 bp, consisted of 199 amino acid residues and included a Redoxin and AphC-TSA domain. As detected by qPCR, PsPrx1 was ubiquitously expressed in the examined tissues with the higher levels in liver and spleen. Upon the immune challenge with A. jandaei bacteria and oxidative stress with ammonia pressure, both mRNA and protein expression level in liver could be significantly enhanced. The results of immunohistochemical examinations showed PsPrx1 was mainly distributed at the junction between the hepatic cells. The general functional properties of PsPrx1 were confirmed using purified rPsPrx1 protein. From the results, rPsPrx1 protein was confirmed to exhibit antioxidant activity and antibacterial properties. The potential for scavenging extracellular H2O2 was evidenced by the purified rPsPrx1 protein in vitro system. In the mixed-function oxidase assay, rPsPrx1 also exhibited a dose-dependent inhibition of DNA damage. These results suggest that rPsPrx1 was implicated defense against microbial pathogens and oxidants, and would provide important information to further understand the functional mechanism of Prx1 in P. sinensis immunity.
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Affiliation(s)
- Yingying Zhang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Kaihang Mi
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Xueming Ding
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Yue Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China
| | - Tao Wang
- Hanjiang District Fisheries Administration, Yangzhou, China
| | - Tianming Dou
- Hanjiang District Fisheries Administration, Yangzhou, China
| | - Jiabiao Ding
- Hanjiang District Fisheries Administration, Yangzhou, China
| | - Wenzhi Wei
- College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.
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Chen F, Wang K. Characterization of the innate immunity in the mud crab Scylla paramamosain. FISH & SHELLFISH IMMUNOLOGY 2019; 93:436-448. [PMID: 31362092 DOI: 10.1016/j.fsi.2019.07.076] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 07/20/2019] [Accepted: 07/26/2019] [Indexed: 06/10/2023]
Abstract
Mud crabs, Scylla paramamosain, are one of the most economical and nutritious crab species in China and South Asia. Inconsistent with the high development of commercial mud crab aquaculture, effective immunological methods to prevent frequently-occurring diseases have not yet been developed. Thus, high mortalities often occur throughout the different developmental stages of this species resulting in large economic losses. In recent years, numerous attempts have been made to use various advanced biological technologies to understand the innate immunity of S. paramamosain as well as to characterize specific immune components. This review summarizes these research advances regarding cellular and humoral responses of the mud crab during pathogen infection, highlighting hemocytes and gills defense, pattern recognition, immune-related signaling pathways (Toll, IMD, JAK/STAT, and prophenoloxidase (proPO) cascades), immune effectors (antimicrobial peptides), production of reactive oxygen species and the antioxidant system. Diseases affecting the development of mud crab aquaculture and potential disease control strategies are discussed.
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Affiliation(s)
- Fangyi Chen
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, Fujian, China; State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, Xiamen University, Xiamen, Fujian, China; Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen University, Xiamen, Fujian, China
| | - Kejian Wang
- State Key Laboratory of Marine Environmental Science, College of Ocean & Earth Sciences, Xiamen University, Xiamen, Fujian, China; State-Province Joint Engineering Laboratory of Marine Bioproducts and Technology, Xiamen University, Xiamen, Fujian, China; Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Xiamen University, Xiamen, Fujian, China.
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Jin T, Sun Y, Zhao R, Shan Z, Gai J, Li Y. Overexpression of Peroxidase Gene GsPRX9 Confers Salt Tolerance in Soybean. Int J Mol Sci 2019; 20:E3745. [PMID: 31370221 PMCID: PMC6695911 DOI: 10.3390/ijms20153745] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 07/20/2019] [Accepted: 07/24/2019] [Indexed: 12/15/2022] Open
Abstract
Peroxidases play prominent roles in antioxidant responses and stress tolerance in plants; however, their functions in soybean tolerance to salt stress remain unclear. Here, we investigated the role of a peroxidase gene from the wild soybean (Glycine soja), GsPRX9, in soybean tolerance to salt stress. GsPRX9 gene expression was induced by salt treatment in the roots of both salt-tolerant and -sensitive soybean varieties, and its relative expression level in the roots of salt-tolerant soybean varieties showed a significantly higher increase than in salt-sensitive varieties after NaCl treatment, suggesting its possible role in soybean response to salt stress. GsPRX9-overexpressing yeast (strains of INVSc1 and G19) grew better than the control under salt and H2O2 stress, and GsPRX9-overexpressing soybean composite plants showed higher shoot fresh weight and leaf relative water content than control plants after NaCl treatment. Moreover, the GsPRX9-overexpressing soybean hairy roots had higher root fresh weight, primary root length, activities of peroxidase and superoxide dismutase, and glutathione level, but lower H2O2 content than those in control roots under salt stress. These findings suggest that the overexpression of the GsPRX9 gene enhanced the salt tolerance and antioxidant response in soybean. This study would provide new insights into the role of peroxidase in plant tolerance to salt stress.
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Affiliation(s)
- Ting Jin
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybeans (General, Ministry of Agriculture), Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Yangyang Sun
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybeans (General, Ministry of Agriculture), Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Ranran Zhao
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybeans (General, Ministry of Agriculture), Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhong Shan
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybeans (General, Ministry of Agriculture), Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Junyi Gai
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybeans (General, Ministry of Agriculture), Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
| | - Yan Li
- National Key Laboratory of Crop Genetics and Germplasm Enhancement, National Center for Soybean Improvement, Key Laboratory for Biology and Genetic Improvement of Soybeans (General, Ministry of Agriculture), Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China.
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Abbas MN, Kausar S, Cui H. The biological role of peroxiredoxins in innate immune responses of aquatic invertebrates. FISH & SHELLFISH IMMUNOLOGY 2019; 89:91-97. [PMID: 30930279 DOI: 10.1016/j.fsi.2019.03.062] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
Peroxiredoxins (Prxs) are a widespread and greatly transcribed family of antioxidant proteins, which rapidly detoxify peroxynitrite, hydrogen peroxide and organic hydroperoxides. The Prxs family members also modulate various physiological functions, including cell growth, differentiation, embryonic development, immune response, apoptosis, lipid metabolism, and cellular homeostasis. In mammals, the physiological functions of Prxs have extensively been studied; however, the knowledge is scanty in their counterpart, aquatic invertebrates. In recent years, substantial progress has been made in our knowledge of Prxs physiological functions in aquatic invertebrates, which has raised interest in defining the contribution of immune responses and removal of reactive oxygen species. In this review, we describe the recent knowledge on the Prxs physiological function in immune responses and DNA protection activity in aquatic invertebrates.
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Affiliation(s)
- Muhammad Nadeem Abbas
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400715, Chongqing, China; Chongqing Engineering and Technology Research Center for Silk Biomaterials and Regenerative Medicine, 400715, Chongqing, China; Southwest University Engineering Research Center for Cancer Biomedical and Translational Medicine, 400715, Chongqing, China
| | - Saima Kausar
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400715, Chongqing, China; Chongqing Engineering and Technology Research Center for Silk Biomaterials and Regenerative Medicine, 400715, Chongqing, China; Southwest University Engineering Research Center for Cancer Biomedical and Translational Medicine, 400715, Chongqing, China
| | - Hongjuan Cui
- State Key Laboratory of Silkworm Genome Biology, Southwest University, 400715, Chongqing, China; Chongqing Engineering and Technology Research Center for Silk Biomaterials and Regenerative Medicine, 400715, Chongqing, China; Southwest University Engineering Research Center for Cancer Biomedical and Translational Medicine, 400715, Chongqing, China.
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Godahewa GI, Perera NCN, Nam BH, Lee J. Antioxidative properties and structural features of atypical 2-Cys peroxiredoxin from Sebastes schlegelii. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 82:152-164. [PMID: 29374514 DOI: 10.1016/j.dci.2018.01.015] [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: 09/26/2017] [Revised: 01/22/2018] [Accepted: 01/22/2018] [Indexed: 06/07/2023]
Abstract
Atypical 2-Cys peroxiredoxin (Prx5) is an antioxidant protein that exerts its antioxidant function by detoxifying different reactive oxygen species (ROS). Here, we identified mitochondrial Prx5 from rockfish (SsPrx5) and described its specific structural and functional characteristics. The open reading frame (ORF) of SsPrx5 (570 bp) was translated into a 190-amino acid polypeptide that contained a mitochondrial targeting sequence (MTS), thioredoxin 2 domain, two Prx-specific signature motifs, and three conserved cysteine residues. Sequence comparison indicated that the SsPrx5 protein sequence shared greatest identity with teleost orthologs, where the phylogenetic results showed an evolutionary position within the fish Prx5. The coding sequence of SsPrx5 was scattered in six exons as found in other vertebrates. Additionally, the potent antioxidant functions of recombinantly expressed SsPrx5 protein was demonstrated by insulin reduction and extracellular H2O2 scavenging both in vitro and in vivo. Quantitative real time PCR (qPCR) detected ubiquitous mRNA expression of SsPrx5 in healthy rockfish tissues, with remarkable expression observed in gill, liver, and reproductive tissues. Prompt transcription of SsPrx5 was shown in the immune-stimulated gill and liver tissues against Streptococcus iniae and lipopolysaccharide injection. Taken together, present results suggest the indispensable role of SsPrx5 in the rockfish antioxidant defense system against oxidative stresses and its role in maintaining redox balance upon pathogen invasion.
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Affiliation(s)
- G I Godahewa
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - N C N Perera
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Bo-Hye Nam
- Biotechnology Research Division, National Institute of Fisheries Science, 408-1 Sirang-ri, Gijang-up, Gijang-gun, Busan, 46083, Republic of Korea
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea.
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Identification and characterization of six peroxiredoxin transcripts from mud crab Scylla paramamosain: The first evidence of peroxiredoxin gene family in crustacean and their expression profiles under biotic and abiotic stresses. Mol Immunol 2017; 93:223-235. [PMID: 29220745 DOI: 10.1016/j.molimm.2017.11.029] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/23/2017] [Accepted: 11/28/2017] [Indexed: 01/18/2023]
Abstract
The peroxiredoxins (Prxs) define a novel and evolutionarily conserved superfamily of peroxidases able to protect cells from oxidative damage by catalyzing the reduction of a wide range of cellular peroxides. Prxs have been identified in prokaryotes as well as in eukaryotes, however, the composition and number of Prxs family members vary in different species. In this study, six Prxs were firstly identified from the mud crab Scylla paramamosain by RT-PCR and RACE methods. Six SpPrxs can be subdivided into three classes: (a) three typical 2-Cys enzymes denominated as Prx1/2, 3, 4, (b) two atypical 2-Cys enzymes known as Prx5-1 and Prx5-2, and (c) a 1-Cys isoform named Prx6. The evolutionarily conserved signatures of peroxiredoxin catalytic center were identified in all six SpPrxs. Phylogenetic analysis revealed that SpPrx3, SpPrx4, SpPrx5s and SpPrx6 were clearly classified into Prx3-6 subclasses, respectively. Although SpPrx1/2 could not be grouped into any known Prx subclasses, SpPrx1/2 clustered together with other arthropods Prx1 or unclassified Prx and could be classified into the typical 2-Cys class. The comparative and evolutionary analysis of the Prx gene family in invertebrates and vertebrates were also conducted for the first time. Tissue-specific expression analysis revealed that these six SpPrxs were expressed in different transcription patterns while the highest expression levels were almost all in the hepatopancreas. Quantitative RT-PCR analysis exhibited that the gene expression profiles of six SpPrxs were distinct when crabs suffered biotic and abiotic stresses including the exposures of Vibrio alginolyticus, poly (I:C), cadmium and hypoosmotic salinity, suggesting that the SpPrxs might play different roles in response to various stresses. The recombinant proteins including the SpPrx1/2, SpPrx4, SpPrx5-1 and SpPrx6 were purified and the peroxidase activity assays indicated that all these proteins can reduce H2O2 in a typical DTT-dependent manner. To our knowledge, this is the first study about the comprehensive characterization of Prx gene family in Scylla paramamosain and even in crustaceans. These results would broaden the current knowledge of the whole Prx family as well as be helpful to understand and clarify the evolutionary pattern of Prx family in invertebrate and vertebrate taxa.
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