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Gayashani Sandamalika WM, Kwon H, Lim C, Yang H, Lee J. The possible role of catalase in innate immunity and diminution of cellular oxidative stress: Insights into its molecular characteristics, antioxidant activity, DNA protection, and transcriptional regulation in response to immune stimuli in yellowtail clownfish (Amphiprion clarkii). Fish Shellfish Immunol 2021; 113:106-117. [PMID: 33826938 DOI: 10.1016/j.fsi.2021.03.022] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/27/2021] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Catalase, a key enzyme in the antioxidant defense grid of organisms, scavenges free radicals to curtail their harmful effects on the host, supporting proper immune function. Herein, we report the identification and characterization of a catalase homolog from Amphiprion clarkii (ClCat), followed by its functional characterization. An open reading frame was identified in the cDNA sequence of ClCat at 1581 bp, which encodes a protein of 527 amino acids (aa) with a molecular mass of 60 kDa. In silico analyses of ClCat revealed characteristic features of the catalase family and a lack of a signal peptide. Multiple sequence alignment of ClCat indicated the conservation of functionally important residues among its homologs. According to phylogenetic analysis, ClCat was of vertebrate origin, positioned within the teleost clade. During native conditions, ClCat mRNA was highly expressed in blood, followed by the liver and kidney. Moreover, significant changes in ClCat transcription were observed after stimulation with LPS, poly I:C, and Vibrio harveyi, in a time-dependent manner. Recombinant ClCat (rClCat) was characterized, and its peroxidase activity was determined. Furthermore, the optimum temperature and pH for rClCat were determined to be 30-40 °C and pH 7, respectively. Oxidative stress tolerance and chromatin condensation assays indicated enhanced cell survival and reduced apoptosis, resulting from reactive oxygen species scavenging by rClCat. The DNA-protective function of rClCat was further confirmed via a metal-catalyzed oxidation assay. Taken together, our findings propose that rClCat plays an essential role in maintaining cellular oxidative homeostasis and host immune protection.
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Affiliation(s)
- W M Gayashani Sandamalika
- 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
| | - Hyukjae Kwon
- 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
| | - Chaehyeon Lim
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Hyerim Yang
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, 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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Janse van Rensburg HC, Limami AM, Van den Ende W. Spermine and Spermidine Priming against Botrytis cinerea Modulates ROS Dynamics and Metabolism in Arabidopsis. Biomolecules 2021; 11:223. [PMID: 33562549 PMCID: PMC7914871 DOI: 10.3390/biom11020223] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/27/2021] [Accepted: 02/02/2021] [Indexed: 12/31/2022] Open
Abstract
Polyamines (PAs) are ubiquitous small aliphatic polycations important for growth, development, and environmental stress responses in plants. Here, we demonstrate that exogenous application of spermine (Spm) and spermidine (Spd) induced cell death at high concentrations, but primed resistance against the necrotrophic fungus Botrytis cinerea in Arabidopsis. At low concentrations, Spm was more effective than Spd. Treatments with higher exogenous Spd and Spm concentrations resulted in a biphasic endogenous PA accumulation. Exogenous Spm induced the accumulation of H2O2 after treatment but also after infection with B. cinerea. Both Spm and Spd induced the activities of catalase, ascorbate peroxidase, and guaiacol peroxidase after treatment but also after infection with B. cinerea. The soluble sugars glucose, fructose, and sucrose accumulated after treatment with high concentrations of PAs, whereas only Spm induced sugar accumulation after infection. Total and active nitrate reductase (NR) activities were inhibited by Spm treatment, whereas Spd inhibited active NR at low concentrations but promoted active NR at high concentrations. Finally, γaminobutyric acid accumulated after treatment and infection in plants treated with high concentrations of Spm. Phenylalanine and asparagine also accumulated after infection in plants treated with a high concentration of Spm. Our data illustrate that Spm and Spd are effective in priming resistance against B. cinerea, opening the door for the development of sustainable alternatives for chemical pesticides.
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Affiliation(s)
| | - Anis M. Limami
- Univ Angers, Institut Agro, INRAE, IRHS, SFR QUASAV, F-49000 Angers, France;
| | - Wim Van den Ende
- Laboratory of Molecular Plant Biology, KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven, Belgium;
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Harikrishnan R, Thamizharasan S, Devi G, Van Doan H, Ajith Kumar TT, Hoseinifar SH, Balasundaram C. Dried lemon peel enriched diet improves antioxidant activity, immune response and modulates immuno-antioxidant genes in Labeo rohita against Aeromonas sorbia. Fish Shellfish Immunol 2020; 106:675-684. [PMID: 32858188 DOI: 10.1016/j.fsi.2020.07.040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Revised: 07/13/2020] [Accepted: 07/17/2020] [Indexed: 06/11/2023]
Abstract
The effect of diet enriched with dried lemon (Citrus limon) peel was fed to Labeo rohita at three different levels (0, 1, 2.5, and 5 g kg-1) for a period of 60 days; the impact of the diet on the hematology, antioxidant activity and immunological reaction and gene expression against Aeromonas sorbia is reported. In both un-challenged and challenged groups treated with 2.5 g and 5 g kg-1 dried lemon peel diets, the enhanced significant changes are: the weight gain and specific growth rate, white blood cell and total protein content, the antioxidants: superoxide dismutase, catalase, glutathione peroxidase, and glutathione activities, the respiratory burst, alternative complement pathway, complement C3, and total immunoglobulin M levels. Similarly, the heat shock protein-70 and -90, superoxide dismutase, glutathione peroxidase, glutathione, interleukin-1β and -8, tumor necrosis factor alpha, inducible nitric oxide synthase, transforming growth factor beta, and immunoglobulin M were up-regulated significantly. Any dried lemon peel enriched diet increased the phagocytic and lysozyme activities significantly in both groups. In the un-challenged group treated with 0 g kg-1 diet or in both groups treated with 2.5 g kg-1 diet the SR was 100%. These results indicate that in both un-challenged and challenged-treated groups the 2.5 and 5 g kg-1 dried lemon peel enriched diets positively modulate growth rate, physiology, and antioxidant status, innate-adaptive immune response as well as antioxidant and immune related gene expression in L. rohita against A. sorbia.
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Affiliation(s)
- Ramasamy Harikrishnan
- Department of Zoology, Pachaiyappa's College for Men, Kanchipuram, 631 501, Tamil Nadu, India
| | - Subramanian Thamizharasan
- Department of Biotechnology, Bharath College of Science and Management, Thanjavur, 613-005, Tamil Nadu, India
| | - Gunapathy Devi
- Department of Zoology, Nehru Memorial College, Puthanampatti, 621 007, Tamil Nadu, India
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand; Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand.
| | | | - Seyed Hossein Hoseinifar
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Chellam Balasundaram
- Department of Herbal and Environmental Science, Tamil University, Thanjavur, 613 005, Tamil Nadu, India
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Hoseinifar SH, Jahazi MA, Mohseni R, Raeisi M, Bayani M, Mazandarani M, Yousefi M, Van Doan H, Torfi Mozanzadeh M. Effects of dietary fern (Adiantum capillus-veneris) leaves powder on serum and mucus antioxidant defence, immunological responses, antimicrobial activity and growth performance of common carp (Cyprinus carpio) juveniles. Fish Shellfish Immunol 2020; 106:959-966. [PMID: 32890760 DOI: 10.1016/j.fsi.2020.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/27/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
A 56-day research was performed to examine the influence of graded levels (0 (control), 0.5, 1 and 2%) of Fern (Adiantum capillus-veneris) leaves powder (FLP) in diet on immune competence and growth of common carp (Cyprinus carpio, initial weight = 20 g). The serum total immunoglobulins content and lysozyme activity in the 1 and 2% FLP groups remarkably increased compared to the other groups (P < 0.05). The skin mucosal lysozyme activity enhanced with increasing dietary FLP level in a dose-response manner. Fish fed on the FLP-supplemented diets had higher skin-mucosal superoxide dismutase activity than the control (P < 0.05). However, serum antioxidant enzymes were not affected by dietary fern (P > 0.05). The serum bactericidal activity against human and fish pathogens increased with enhancing the FLP level in diet against Staphylococcus aureus, Escherichia coli (EHEC ATCC 43895), Escherichia coli (CI), Pseudomonas aeruginosa, Klebsiella pneumonia and Aeromonas hydrophila. The serum antibacterial activity against Yersinia ruckeri in the 2% FLP group was higher than the other treatments. Furthermore, the serum bactericidal activity against P. aeruginosa (ATCC 27853) only observed in fish fed on the 1 and 2% FLP-supplemented diets. The skin mucosal bactericidal activity and inhibitory effects increased with enhancing the FLP level in diet against E. coli, K. pneumonia, Y. ruckeri and A. hydrophila in a dose response manner. Moreover, the skin mucosal bactericidal activity against S. aureus only observed in fish fed on 1 and 2% FLP-supplemented diets. The weight gain values in the 1 and 2% FLP groups were higher than the other treatments (P < 0.05). Feed conversion ratio (FCR) improved with increasing FLP level in diet in a dose-response manner (P < 0.05). By considering serum and mucosal bactericidal activities against different pathogenic bacteria, the supplementation of 2% FLP in diet is recommended for C. carpio during grow-out phase.
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Affiliation(s)
- Seyed Hossein Hoseinifar
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.
| | - Mohammad Amin Jahazi
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Roghieh Mohseni
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Mojtaba Raeisi
- Food, Drug and Natural products Health Research Center, Golestan University of Medical Sciences, Gorgan, Iran
| | - Mahsan Bayani
- Radin Makian Azma Mehr Ltd., Radinmehr Veterinary Laboratory, Gorgan, Iran
| | - Mohammad Mazandarani
- Department of Fisheries, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
| | - Morteza Yousefi
- Department of Veterinary Medicine, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Hien Van Doan
- Department of Animal and Aquatic Sciences, Faculty of Agriculture, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Mansour Torfi Mozanzadeh
- Agriculture Research, Education and Extension, South Iran Aquaculture Research Center, Iran Fisheries Science Research Institution (IFSRI), Ahwaz, Iran
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Vazirzadeh A, Marhamati A, Rabiee R, Faggio C. Immunomodulation, antioxidant enhancement and immune genes up-regulation in rainbow trout (Oncorhynchus mykiss) fed on seaweeds included diets. Fish Shellfish Immunol 2020; 106:852-858. [PMID: 32871250 DOI: 10.1016/j.fsi.2020.08.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
This study investigated the stimulatory effects of dietary inclusion of Gracilariopsis persica (GP), Hypnea flagelliformis (HF) and Sargassum boveanum (SB) on immune indices, antioxidant capability and immune related genes expression of rainbow trout (Oncorhynchus mykiss). Seven iso-nitrogenous and iso-caloric diets with 0, 5 and 10% of each macroalgae were prepared and fed to rainbow trout juveniles for 83 days. Serum lysozyme (Lyz) and respiratory burst activity (NBT) along with activity of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT) and expression of LyzII, TNFα and IL-1β genes in head kidney samples were determined by days 47 and 83. Our results revealed that dietary inclusion of seaweeds improved fish immune status. Long term feeding of fish on seaweed contained diets (except for GP10) improved serum Lyz activity in comparison to control group. Similarly, extended feeding on GP5 and HF10 and HF10 included diets improved SOD and POD levels, respectively. Genes expression studies revealed that seaweeds contained diets noticeably enhanced expression of LyzII, TNFα and IL-1β in comparison to control fish. However, results revealed that such stimulatory effects were more evident at lower dietary inclusion level and shorter feeding time. In conclusion, the results depicted that dietary inclusion of the seaweeds effectively improved serum immune indices and head kidney antioxidant status and immune related genes expression in a time and dose dependent manner.
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Affiliation(s)
- Arya Vazirzadeh
- Department of Natural Resources and Environmental Engineering, School of Agriculture, Shiraz University, Shiraz, 71441-65186, Iran.
| | - Anahita Marhamati
- Department of Natural Resources and Environmental Engineering, School of Agriculture, Shiraz University, Shiraz, 71441-65186, Iran
| | - Reza Rabiee
- Agriculture and Natural Resources Education and Research Centre of Hormozgan, P.O. Box 79145-1577, Bandar Abbas, Iran
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Italy
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Cheng Y, Li C, Hou J, Li Y, Jiang C, Ge Y. Mitogen-Activated Protein Kinase Cascade and Reactive Oxygen Species Metabolism are Involved in Acibenzolar-S-Methyl-Induced Disease Resistance in Apples. J Agric Food Chem 2020; 68:10928-10936. [PMID: 32902967 DOI: 10.1021/acs.jafc.0c04257] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Apple fruits were subjected to dipping treatment to explore the effects of acibenzolar-S-methyl (ASM) and the mitogen-activated protein kinase (MAPK) inhibitor PD98059 on lesion growth in fruits inoculated with Penicillium expansum. We investigated the roles of the MAPK cascade and reactive oxygen species metabolism in disease resistance in apples. ASM treatment inhibited lesion growth; suppressed catalase (CAT) activity; increased H2O2 content; reduced glutathione and ascorbic acid contents; and increased glutathione reductase, ascorbate peroxidase, peroxidase, superoxide dismutase, and NADPH oxidase activities. Moreover, ASM upregulated MdSOD, MdPOD, MdGR, MdAPX, MdMAPK4, MdMAPK2, and MdMAPKK1 expressions and downregulated MdCAT and MdMAPK3 expressions. PD98059 + ASM treatment increased CAT activity and MdCAT and MdMAPK3 expressions; inhibited MdSOD, MdPOD, MdGR, MdAPX, MdMAPK4, MdMAPK2, and MdMAPKK1 expressions; reduced superoxide dismutase, peroxidase, ascorbate peroxidase, and glutathione reductase activities; and reduced glutathione content in apples. These findings indicate that ASM induces disease resistance in apples by regulating the expressions of key genes involved in reactive oxygen species metabolism and the MAPK cascade.
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Affiliation(s)
- Yuan Cheng
- College of Food Science and Technology, Bohai University, Jinzhou 121013, PR China
- National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou 121013, PR China
| | - Canying Li
- College of Food Science and Technology, Bohai University, Jinzhou 121013, PR China
- National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou 121013, PR China
| | - Jiabao Hou
- College of Food Science and Technology, Bohai University, Jinzhou 121013, PR China
- National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou 121013, PR China
| | - Yihan Li
- College of Food Science and Technology, Bohai University, Jinzhou 121013, PR China
- National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou 121013, PR China
| | - Chaonan Jiang
- College of Food Science and Technology, Bohai University, Jinzhou 121013, PR China
- National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou 121013, PR China
| | - Yonghong Ge
- College of Food Science and Technology, Bohai University, Jinzhou 121013, PR China
- National and Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou 121013, PR China
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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 Immunol 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] [What about the content of this article? (0)] [Affiliation(s)] [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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Wang C, Lu S, Li J, Wang L, Jiang H, Liu Y, Liu H, Han S, Yin J. Effects of dietary myo-inositol on growth, antioxidative capacity, and nonspecific immunity in skin mucus of taimen Hucho taimen fry. Fish Physiol Biochem 2020; 46:1011-1018. [PMID: 31950318 DOI: 10.1007/s10695-020-00766-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
In this study, the effects of dietary myo-inositol on the skin mucosal immunity and growth of taimen (Hucho taimen) fry were determined. Triplicate groups of 500 fish (initial weight 5.58 ± 0.15 g) were fed different diets containing graded levels of myo-inositol (28.75, 127.83, 343.83, 565.81, and 738.15 mg kg-1) until satiation for 56 days. Thereafter, the nonspecific skin mucus immune parameters, antioxidative capacity, and growth performance were measured. The skin mucus protein and the activities of alkaline phosphatase were significantly higher than those in the control group (P < 0.05). However, there were no significant differences in lysozyme activity among the treatments (P > 0.05). The antimicrobial activity and minimum inhibitory concentration of the skin mucus were increased significantly by myo-inositol supplementation (P < 0.05). The superoxide dismutase, catalase, and glutathione peroxidase activities were significantly elevated in the treatment groups (P < 0.05), whereas the malondialdehyde contents were significantly decreased (P < 0.05). Low-level myo-inositol (28.75 mg kg-1) led to a significantly lower weight gain, feed efficiency, condition factor, and survival rate compared with the other treatments (P < 0.05). In conclusion, dietary myo-inositol deficiency (28.75 mg kg-1) adversely affects the skin mucus immune parameters, antioxidative capacity, and growth performance of Hucho taimen fry.
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Affiliation(s)
- Chang'an Wang
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, 43, Songfa Street, Harbin, 150070, People's Republic of China
| | - Shaoxia Lu
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, 43, Songfa Street, Harbin, 150070, People's Republic of China
| | - Jinnan Li
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, 43, Songfa Street, Harbin, 150070, People's Republic of China
| | - Liansheng Wang
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, 43, Songfa Street, Harbin, 150070, People's Republic of China
| | - Haibo Jiang
- College of Animal Science, Guizhou University, Guiyang, 550025, People's Republic of China
| | - Yang Liu
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, 43, Songfa Street, Harbin, 150070, People's Republic of China
| | - Hongbai Liu
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, 43, Songfa Street, Harbin, 150070, People's Republic of China.
| | - Shicheng Han
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, 43, Songfa Street, Harbin, 150070, People's Republic of China
| | - Jiasheng Yin
- Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, 43, Songfa Street, Harbin, 150070, People's Republic of China
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Gargouri B, Mseddi M, Mnif F, Abid M, Attia H, Lassoued S. Oxidative stress enhances the immune response to oxidatively modified catalase enzyme in patients with Graves' disease. J Clin Lab Anal 2020; 34:e23051. [PMID: 31617239 PMCID: PMC7031633 DOI: 10.1002/jcla.23051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 09/14/2019] [Accepted: 09/17/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Oxidative stress is associated with several autoimmune disorders and oxidative modification of proteins that may result in autoimmune response. This study aims to evaluate the catalase (CAT) activity and the autoimmune response against the native CAT and the oxidatively modified enzyme in patients with Graves' disease (GD) and healthy controls in a comparative way. METHODS The CAT activity was evaluated via spectrophotometric method. Using enzyme-linked immunosorbent assay, the reactivities of autoantibody toward native, malondialdehyde (MDA) and hydrogen peroxide (H2 O2 ) modified CAT were evaluated in plasmas of patients and controls. RESULTS Reduced CAT activity was found in patients compared with controls (P < .05). It was proved that levels of IgG antibodies against MDA-modified CAT were higher than against unmodified ones (P < .001). No changes were found for the reactivities to H2 O2 -modified CAT. Positive correlation was found between the reactivity to MDA-modified CAT and the triiodothyronine level (P < .001, r = .6). CONCLUSION Our findings incriminate the MDA in the autoantibodies reactivity to oxidatively modified CAT leading to a disturbed oxidative profile and/or the progression of GD pathology.
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Affiliation(s)
| | - Malek Mseddi
- Laboratory LR11ES45Research Group “Biotechnology and Pathology”National School of Engineers of SfaxSfaxTunisia
| | - Fatma Mnif
- Department of endocrinologyHedi Chaker HospitalSfaxTunisia
| | - Mohamed Abid
- Department of endocrinologyHedi Chaker HospitalSfaxTunisia
| | - Hamadi Attia
- Laboratory LR11ES45Research Group “Biotechnology and Pathology”National School of Engineers of SfaxSfaxTunisia
| | - Saloua Lassoued
- Laboratory LR11ES45Research Group “Biotechnology and Pathology”National School of Engineers of SfaxSfaxTunisia
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Sellaththurai S, Priyathilaka TT, Lee J. Molecular cloning, characterization, and expression level analysis of a marine teleost homolog of catalase from big belly seahorse (Hippocampus abdominalis). Fish Shellfish Immunol 2019; 89:647-659. [PMID: 30936047 DOI: 10.1016/j.fsi.2019.03.064] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Revised: 03/24/2019] [Accepted: 03/26/2019] [Indexed: 06/09/2023]
Abstract
Organisms possess a cellular antioxidant defense system inclusive of ROS scavengers to maintain the homeostasis of antioxidant levels. Catalase is a major ROS scavenger enzyme that plays a significant role in the antioxidant defense mechanism of organisms by reducing toxic hydrogen peroxide molecules into a nontoxic form of oxygen and water with a high turnover rate. In the present study, we performed molecular and functional characterization of the catalase homolog from Hippocampus abdominalis (HaCat). The HaCat cDNA sequence was identified as a 1578 bp ORF (open reading frame) that encodes a polypeptide of 526 amino acids with 59.33 kDa molecular weight. Its estimated pI value is 7.7, and it does not have any signal sequences. HaCat shared a conserved domain arrangement including the catalase proximal active site signature and heme ligand signature domain with the previously identified catalase counterparts. Phylogenetic analysis displayed close evolutionary relationships between HaCat and catalases from other teleost fish. According to our qPCR results, ubiquitous expression of HaCat transcripts were observed in all the tested tissues with high expression in the kidney followed by liver. Significant modulations of HaCat transcription were observed in blood, liver, and kidney tissues post-challenge with Streptococcus iniae, Edwardsiella tarda, poly I:C, and LPS. Peroxidase activity of recombinant HaCat (rHaCat) was evaluated using an ABTS assay and the ROS removal effect was further confirmed by oxidative DNA damage protection and cell viability assays. The rHaCat showed more than 97% activity over a temperature and pH range of 10 °C-40 °C and 5 to 6, respectively. The above results suggest that HaCat plays an indispensable role in the oxidative homeostasis of the seahorse during pathogenic attack.
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Affiliation(s)
- Sarithaa Sellaththurai
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea
| | - Thanthrige Thiunuwan Priyathilaka
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, 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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11
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Song X, Xu J, Liang C, Chao Y, Jin Q, Wang C, Chen M, Liu Z. Self-Supplied Tumor Oxygenation through Separated Liposomal Delivery of H 2O 2 and Catalase for Enhanced Radio-Immunotherapy of Cancer. Nano Lett 2018; 18:6360-6368. [PMID: 30247918 DOI: 10.1021/acs.nanolett.8b02720] [Citation(s) in RCA: 179] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
The recent years have witnessed the blooming of cancer immunotherapy, as well as their combinational use together with other existing cancer treatment techniques including radiotherapy. However, hypoxia is one of several causes of the immunosuppressive tumor microenvironment (TME). Herein, we develop an innovative strategy to relieve tumor hypoxia by delivering exogenous H2O2 into tumors and the subsequent catalase-triggered H2O2 decomposition. In our experiment, H2O2 and catalase are separately loaded within stealthy liposomes. After intravenous (iv) preinjection of CAT@liposome, another dose of H2O2@liposome is injected 4 h later. The sustainably released H2O2 could be decomposed by CAT@liposome, resulting in a long lasting effect in tumor oxygenation enhancement. As the result, the combination treatment by CAT@liposome plus H2O2@liposome offers remarkably enhanced therapeutic effects in cancer radiotherapy as observed in a mouse tumor model as well as a more clinically relevant patient-derived xenograft tumor model. Moreover, the relieved tumor hypoxia would reverse the immunosuppressive TME to favor antitumor immunities, further enhancing the combined radio-immunotherapy with cytotoxic T lymphocyte-associated antigen 4 (CTLA4) blockade. This work presents a simple yet effective strategy to promote tumor oxygenation via sequential delivering catalase and exogenous H2O2 into tumors using well-established liposomal carriers, showing great potential for clinical translation in radio-immunotherapy of cancer.
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Affiliation(s)
- Xuejiao Song
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau , Macau 999078 , China
- Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University , Suzhou 215123 , China
| | - Jun Xu
- Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University , Suzhou 215123 , China
| | - Chao Liang
- Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University , Suzhou 215123 , China
| | - Yu Chao
- Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University , Suzhou 215123 , China
| | - Qiutong Jin
- Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University , Suzhou 215123 , China
| | - Chao Wang
- Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University , Suzhou 215123 , China
| | - Meiwan Chen
- State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical Sciences University of Macau , Macau 999078 , China
| | - Zhuang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University , Suzhou 215123 , China
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12
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Siddaiah CN, Prasanth KVH, Satyanarayana NR, Mudili V, Gupta VK, Kalagatur NK, Satyavati T, Dai XF, Chen JY, Mocan A, Singh BP, Srivastava RK. Chitosan nanoparticles having higher degree of acetylation induce resistance against pearl millet downy mildew through nitric oxide generation. Sci Rep 2018; 8:2485. [PMID: 29410438 PMCID: PMC5802724 DOI: 10.1038/s41598-017-19016-z] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 12/18/2017] [Indexed: 11/24/2022] Open
Abstract
Downy mildew of pearl millet caused by the biotrophic oomycete Sclerospora graminicola is the most devastating disease which impairs pearl millet production causing huge yield and monetary losses. Chitosan nanoparticles (CNP) were synthesized from low molecular weight chitosan having higher degree of acetylation was evaluated for their efficacy against downy mildew disease of pearl millet caused by Sclerospora graminicola. Laboratory studies showed that CNP seed treatment significantly enhanced pearl millet seed germination percentage and seedling vigor compared to the control. Seed treatment with CNP induced systemic and durable resistance and showed significant downy mildew protection under greenhouse conditions in comparison to the untreated control. Seed treatment with CNP showed changes in gene expression profiles wherein expression of genes of phenylalanine ammonia lyase, peroxidase, polyphenoloxidase, catalase and superoxide dismutase were highly upregulated. CNP treatment resulted in earlier and higher expression of the pathogenesis related proteins PR1 and PR5. Downy mildew protective effect offered by CNP was found to be modulated by nitric oxide and treatment with CNP along with NO inhibitors cPTIO completely abolished the gene expression of defense enzymes and PR proteins. Further, comparative analysis of CNP with Chitosan revealed that the very small dosage of CNP performed at par with recommended dose of Chitosan for downy mildew management.
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Affiliation(s)
- Chandra Nayaka Siddaiah
- Department of Studies in Biotechnology, University of Mysore, Manasagangotri, Mysore, 570006, Karnataka, India.
| | - Keelara Veerappa Harish Prasanth
- Department of Biochemistry, Central Food Technological Research Institute, Council of Scientific and Industrial Research, Mysore, 570 020, Karnataka, India
| | - Niranjan Raj Satyanarayana
- Department of Studies in Microbiology, Karnataka State Open University, Mukthagangotri, Mysore, 570006, Karnataka, India
| | - Venkataramana Mudili
- Microbiology Division, DRDO-BU-Centre for Life sciences, Bharathiar University Campus, Coimbatore, 641046, Tamil Nadu, India
| | - Vijai Kumar Gupta
- Department of Chemistry and Biotechnology, School of Science, Tallinn University of Technology, Tallinn, Estonia
| | - Naveen Kumar Kalagatur
- Microbiology Division, DRDO-BU-Centre for Life sciences, Bharathiar University Campus, Coimbatore, 641046, Tamil Nadu, India
| | - Tara Satyavati
- All India Coordinated Research Project on Pearl Millet, Indian Council of Agricultural Research, Mandor, Jodhpur, 342 304, Rajasthan, India
| | - Xiao-Feng Dai
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jie-Yin Chen
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Andrei Mocan
- Department of Pharmaceutical Botany, Faculty of Pharmacy, University of Medicine and Pharmacy "Iuliu Hațieganu", Ghe. Marinescu 23, 400337, Cluj-Napoca, Romania
| | - Bhim Pratap Singh
- Molecular Microbiology and Systematics Laboratory, Department of Biotechnology, Mizoram University, Mizoram, India
| | - Rakesh Kumar Srivastava
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru, 502324, Telangana, India.
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Saeed M, Yatao X, Hassan FU, Arain MA, Abd El-Hack ME, Noreldin AE, Sun C. Influence of Graded Levels of l-Theanine Dietary Supplementation on Growth Performance, Carcass Traits, Meat Quality, Organs Histomorphometry, Blood Chemistry and Immune Response of Broiler Chickens. Int J Mol Sci 2018; 19:ijms19020462. [PMID: 29401695 PMCID: PMC5855684 DOI: 10.3390/ijms19020462] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 01/30/2018] [Accepted: 01/31/2018] [Indexed: 11/16/2022] Open
Abstract
l-theanine is a water-soluble non-proteinous amino acid mainly found in green tea leaves. Despite the availability of abundant literature on green tea, studies on the use of l-theanine as a feed additive in animals, and especially broilers are limited. The objective of this study was, therefore, to evaluate the effect of different dietary levels of l-theanine on meat quality, growth performance, immune response, and blood metabolites in broilers. A total of 400 day-old broiler chicks were randomly divided into four treatment groups using a completely randomized design; C-control, basal diet; 100LT-basal diet + 100 mg l-theanine/kg diet; 200LT-basal diet + 200 mg l-theanine/kg diet; and 300LT-basal diet + 300 mg l-theanine/kg diet. Results revealed that the intermediate level of l-theanine (200 mg/kg diet) showed better results in terms of body weight gain (BWG), feed consumed (FC), and feed conversion ratio (FCR) as compared with the other supplemented groups and the control. The live weight eviscerated weight and gizzard weight were higher in all l-theanine levels as compared to those of the control group. Increased weight (p ≤ 0.05) of spleen and bursa were found in group 200LT (200 mg l-theanine/kg diet). Concerning meat color parameters, values for yellowness (b*), and redness (a*) were greater in l-theanine-supplemented groups than the control. Supplementing broiler diet with l-theanine reduced (p = 0.02) total serum cholesterol contents while increased HDL. Further analysis revealed lower relative serum cytokines (IL-2 and INF-γ) and reduced mRNA expression of TNF-α and IL-6 in thymus, and IFN-γ and IL-2 in spleen in the treated group. Moreover, supplementation with 200 mg/kg of l-theanine improved antioxidant status in blood by increasing SOD, GSH-Px, and relative CAT levels. It is concluded that the optimum supplementation level of l-theanine is 200 mg/kg of diet because it resulted in improved performance parameters in broilers. However, higher levels of l-theanine (300 mg/kg diet) may have deleterious effects on performance and health of broiler chickens.
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Affiliation(s)
- Muhammad Saeed
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
| | - Xu Yatao
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
| | - Faiz-Ul Hassan
- Institute of Animal and Dairy Sciences, Faculty of Animal Husbandry, University of Agriculture Faisalabad, Faisalabad 38040, Pakistan.
| | - Muhammad Asif Arain
- Faculty of Veterinary and Animal Sciences, Lasbela University of Agriculture, Water and Marine Sciences, Uthal 90150, Pakistan.
| | - Mohamed E Abd El-Hack
- Department of Poultry, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
| | - Ahmed E Noreldin
- Department of Histology and Cytology, Faculty of Veterinary Medicine, Damanhour University, Damanhour 22516, Egypt.
| | - Chao Sun
- College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China.
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14
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Zhang B, Li HL, Fan Q, Guo F, Ren XY, Zhou HB, Zhu JW, Zhao YS, Tian WJ. Serum Helicobacter pylori KatA and AhpC antibodies as novel biomarkers for gastric cancer. World J Gastroenterol 2016; 22:5060-5067. [PMID: 27275098 PMCID: PMC4886381 DOI: 10.3748/wjg.v22.i21.5060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/24/2015] [Revised: 01/26/2016] [Accepted: 02/22/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate catalase (KatA) and alkyl hydroperoxide reductase (AhpC) antibodies of Helicobacter pylori as biomarkers for gastric cancer (GC).
METHODS: This study included 232 cases and 264 controls. Recombinant KatA and AhpC proteins were constructed and the levels of antibodies were tested by indirect enzyme-linked immunosorbent assay (ELISA). Logistic regression was applied to analyze the relationships between KatA, AhpC and GC. The χ2 trend test was used to evaluate the dose-response relationships between serum KatA and AhpC antibody levels and GC. Receiver operating characteristic (ROC) curve was used to evaluate the screening accuracy of KatA and AhpC as biomarkers. Combined analysis was used to observe screening accuracy of predictors for GC.
RESULTS: In all subjects, the association between KatA and AhpC and GC risk was significant (P < 0.001) with odds ratio (OR) = 12.84 (95%CI: 7.79-21.15) and OR = 2.4 (95%CI: 1.55-3.73), respectively. KatA and AhpC antibody levels were strongly related to GC risk with a dose-dependent effect (P for trend < 0.001). The area under the ROC (AUC) for KatA was 0.806, providing a sensitivity of 66.81% and specificity of 86.36%; and the AUC for AhpC was 0.615, with a sensitivity of 75.65% and specificity of 45.49%. The AUC was 0.906 for KatA and flagella protein A (FlaA) combined analysis.
CONCLUSION: Serum KatA and AhpC antibodies are associated with GC risk and KatA may serve as a biomarker for GC. KatA/FlaA combined analysis improved screening accuracy.
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15
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Shakerley NL, Chandrasekaran A, Trebak M, Miller BA, Melendez JA. Francisella tularensis Catalase Restricts Immune Function by Impairing TRPM2 Channel Activity. J Biol Chem 2016; 291:3871-81. [PMID: 26679996 PMCID: PMC4759167 DOI: 10.1074/jbc.m115.706879] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 12/16/2015] [Indexed: 12/12/2022] Open
Abstract
As an innate defense mechanism, macrophages produce reactive oxygen species that weaken pathogens and serve as secondary messengers involved in immune function. The Gram-negative bacterium Francisella tularensis utilizes its antioxidant armature to limit the host immune response, but the mechanism behind this suppression is not defined. Here we establish that F. tularensis limits Ca(2+) entry in macrophages, thereby limiting actin reorganization and IL-6 production in a redox-dependent fashion. Wild type (live vaccine strain) or catalase-deficient F. tularensis (ΔkatG) show distinct profiles in their H2O2 scavenging rates, 1 and 0.015 pm/s, respectively. Murine alveolar macrophages infected with ΔkatG display abnormally high basal intracellular Ca(2+) concentration that did not increase further in response to H2O2. Additionally, ΔkatG-infected macrophages displayed limited Ca(2+) influx in response to ionomycin, as a result of ionophore H2O2 sensitivity. Exogenously added H2O2 or H2O2 generated by ΔkatG likely oxidizes ionomycin and alters its ability to transport Ca(2+). Basal increases in cytosolic Ca(2+) and insensitivity to H2O2-mediated Ca(2+) entry in ΔkatG-infected cells are reversed by the Ca(2+) channel inhibitors 2-aminoethyl diphenylborinate and SKF-96365. 2-Aminoethyl diphenylborinate but not SKF-96365 abrogated ΔkatG-dependent increases in macrophage actin remodeling and IL-6 secretion, suggesting a role for H2O2-mediated Ca(2+) entry through the transient receptor potential melastatin 2 (TRPM2) channel in macrophages. Indeed, increases in basal Ca(2+), actin polymerization, and IL-6 production are reversed in TRPM2-null macrophages infected with ΔkatG. Together, our findings provide compelling evidence that F. tularensis catalase restricts reactive oxygen species to temper macrophage TRPM2-mediated Ca(2+) signaling and limit host immune function.
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Affiliation(s)
- Nicole L Shakerley
- From the Colleges of Nanoscale Science, State University of New York, Polytechnic Institute, Albany, New York 12203 and
| | - Akshaya Chandrasekaran
- From the Colleges of Nanoscale Science, State University of New York, Polytechnic Institute, Albany, New York 12203 and
| | - Mohamed Trebak
- From the Colleges of Nanoscale Science, State University of New York, Polytechnic Institute, Albany, New York 12203 and the Departments of Cellular & Molecular Physiology and
| | - Barbara A Miller
- Pediatrics and Biochemistry and Molecular Biology, Pennsylvania State University College of Medicine, Hershey, Pennsylvania 17033
| | - J Andrés Melendez
- From the Colleges of Nanoscale Science, State University of New York, Polytechnic Institute, Albany, New York 12203 and
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16
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Qin T, Yin Y, Yu Q, Yang Q. Bursopentin (BP5) protects dendritic cells from lipopolysaccharide-induced oxidative stress for immunosuppression. PLoS One 2015; 10:e0117477. [PMID: 25659113 PMCID: PMC4319828 DOI: 10.1371/journal.pone.0117477] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 12/23/2014] [Indexed: 01/04/2023] Open
Abstract
Dendritic cells (DCs) play a vital role in the regulation of immune-mediated inflammatory diseases. Thus, DCs have been regarded as a major target for the development of immunomodulators. However, oxidative stress could disturb inflammatory regulation in DCs. Here, we examined the effect of bursopentine (BP5), a novel pentapeptide isolated from chicken bursa of fabricius, on the protection of DCs against oxidative stress for immunosuppression. BP5 showed potent protective effects against the lipopolysaccharide (LPS)-induced oxidative stress in DCs, including nitric oxide, reactive oxygen species and lipid peroxidation. Furthermore, BP5 elevated the level of cellular reductive status through increasing the reduced glutathione (GSH) and the GSH/GSSG ratio. Concomitant with these, the activities of several antioxidative redox enzymes, including glutathione peroxidase (GPx), catalase (CAT) and superoxide dismutase (SOD), were obviously enhanced. BP5 also suppressed submucosal DC maturation in the LPS-stimulated intestinal epithelial cells (ECs)/DCs coculture system. Finally, we found that heme oxygenase 1 (HO-1) was remarkably upregulated by BP5 in the LPS-induced DCs, and played an important role in the suppression of oxidative stress and DC maturation. These results suggested that BP5 could protect the LPS-activated DCs against oxidative stress and have potential applications in DC-related inflammatory responses.
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Affiliation(s)
- Tao Qin
- Key Lab of Animal Physiology and Biochemistry of China’s Department of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, People’s Republic of China
| | - Yinyan Yin
- Key Lab of Animal Physiology and Biochemistry of China’s Department of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, People’s Republic of China
| | - Qinghua Yu
- Key Lab of Animal Physiology and Biochemistry of China’s Department of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, People’s Republic of China
| | - Qian Yang
- Key Lab of Animal Physiology and Biochemistry of China’s Department of Agriculture, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, People’s Republic of China
- * E-mail:
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17
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Li R, Li A. Antibacterial efficacy of recombinant Siganus oramin L-amino acid oxidase expressed in Pichia pastoris. Fish Shellfish Immunol 2014; 41:356-361. [PMID: 25238719 DOI: 10.1016/j.fsi.2014.09.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 08/29/2014] [Accepted: 09/10/2014] [Indexed: 06/03/2023]
Abstract
Siganus oraminl-amino acid oxidase is a novel natural protein (named SR-LAAO) isolated from serum of the rabbitfish (S. oramin), which showed antibacterial activity against both Gram-positive and Gram-negative bacteria and had a lethal effect on the parasites Cryptocaryon irritans, Trypanosoma brucei brucei and Ichthyophthirius multifiliis. In order to test whether recombinant SR-LAAO (rSR-LAAO) produced by the eukaryotic expression system also has antimicrobial activity, the yeast Pichia pastoris was used as the expression host to obtain rSR-LAAO in vitro. Crude rSR-LAAO produced by P. pastoris integrated with the SR-LAAO gene had antibacterial activity against both Gram-positive and Gram-negative bacteria as shown by inhibition zone assay of the antibacterial spectrum on agar plates. The average diameter of the inhibition zone of crude rSR-LAAO against the Gram-positive bacteria Staphylococcus aureus and Streptococcus agalactiae was 1.040 ± 0.045 cm and 1.209 ± 0.085 cm, respectively. For the Gram-negative bacteria Aeromonas sobria, Escherichia coli, Vibrio alginolyticus, Vibrio cholera and Photobacterium damselae subsp. piscicida, the average diameter of inhibition zone was 1.291 ± 0.089 cm, 0.943 ± 0.061 cm, 0.756 ± 0.057 cm, 0.834 ± 0.023 cm and 1.211 ± 0.026 cm, respectively. These results were obtained at the logarithmic growth phase of S. agalactiae and A. sobria cell suspensions after incubation with 0.5 mg/mL crude rSR-LAAO for 24 h. The final bacterial growth rate was decreased significantly. The relative inhibition rate can reach 50% compared to crude products from P. pastoris integrated with an empty vector at the same concentration of protein. The antimicrobial activity of crude rSR-LAAO was likely associated with H2O2 formation, because its inhibition zones were disturbed significantly by catalase. Scanning electron microscopy results showed crude rSR-LAAO-treated bacterial surfaces became rough and particles were attached, cell walls were retracted and cell membranes were ruptured. Together, the results of this study indicated rSR-LAAO from the P. pastoris expression system is a potential antibiotic for application as a therapeutic agent against bacterial diseases.
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Affiliation(s)
- Ruijun Li
- State Key Laboratory of Biocontrol/Key Laboratory of Aquatic Product Safety (Sun Yat-Sen University), Ministry of Education, School of Life Sciences, Sun Yat-sen University, 135 Xingang West Street, Haizhu District, Guangzhou, Guangdong Province 510275, PR China
| | - Anxing Li
- State Key Laboratory of Biocontrol/Key Laboratory of Aquatic Product Safety (Sun Yat-Sen University), Ministry of Education, School of Life Sciences, Sun Yat-sen University, 135 Xingang West Street, Haizhu District, Guangzhou, Guangdong Province 510275, PR China.
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18
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Qi Y, Liu J, Zheng L, Cao Y, Wan L. [The effect of Xinfeng capsule treatment on the number of BTLA(+)T cells and oxidative stress of patients with ankylosing spondylitis]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2014; 30:1084-1089. [PMID: 25270214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To investigate the changes of B and T lymphocyte attenuator (BTLA), reactive oxygen species (ROS), reactive nitrogen species (RNS), malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), total antioxidative capacity (TAOC) in the patients with ankylosing spondylitis (AS) and the effect of Xinfeng capsule (XFC) on them. METHODS AS patients (n=140) were randomly divided into two groups, XFC group (3 tablets each time, tid, n=70) and salicylazosulfapyridine (SASP) group (4 pills each time, bid, n=70). Continuous treatment lasts 3 months. The study also enrolled 60 healthy volunteers as a control group. Flow cytometry was used to test BTLA expression. ELISA was performed to detect the oxidative stress indicators (ROS, RNS, MDA, SOD, CAT, TAOC) and cytokines (IL-4, IL-10, IL-1β, TNF-α). Western blotting was adopted to examine the blood sedimentation (ESR). HITACHI 7060 automatic biochemical analyzer was used to determine the level of high sensitive C-reactive protein (Hs-CRP). RESULTS Clinical efficacy of XFC group was significantly better than that of SASP group (P<0.01). Compared with the healthy control group, AS patients had significantly lower BTLA expression in CD3(+) T cells and CD4(+) T cells from the peripheral blood (P<0.01 or P<0.05), the decreased levels of SOD, CAT and TAOC, and significantly increased ROS, RNS and MDA values (P<0.01 or P<0.05). In addition, the levels of serum IL-1β, TNF-α, ESR and Hs-CRP were significantly higher (P<0.01) and IL-4, IL-10 were significantly lower in AS patients (P<0.01 or P<0.05). Compared with pre-treatment, both XFC and SASP significantly elevated the expressions of BTLA(+)CD3(+) T, BTLA(+)CD4(+) T, BTLA, SOD, TAOC, IL-4, SF-36 (PF, SF, RP, RE, BP, MH, VT, GH) eight dimension scores, and reduced ROS, MDA, TNF-α, ESR, Hs-CRP, VAS, BASDAI, BASFI and BAS-G in the peripheral blood (P<0.01 or P<0.05). The differences between XFC group and SASP group were statistically significant (P<0.01 or P<0.05). Pearson correlation analysis showed that BTLA expression level in the peripheral blood was positively correlated with SOD, RP, BP, SF and RE. BTLA(+)CD3(+) T cells and BTLA*CD4(+) T cells were significantly negatively correlated with ROS, MDA, IL-1β, TNF-α, ESR, VAS and BASDAI, and they were positively correlated with TAOC, IL-4 and IL-10. BTLA(+)CD3(+) T cells were significantly negatively correlated with RNS, Hs-CRP and BASFI; BTLA(+)CD4(+) T cells were positively correlated with CAT. CONCLUSION XFC can improve BTLA expression in the peripheral blood of AS patients and regulate negatively the activation and proliferation of T cells.
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Affiliation(s)
- Yajun Qi
- Anhui University of Chinese Medicine, Hefei 230038, China
| | - Jian Liu
- First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei 230031, China
| | - Li Zheng
- Department of Radiation Biology, City of Hope National Medical Center and Beckman Research Institute, Duarte, CA 91010, USA
| | - Yunxiang Cao
- First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei 230031, China
| | - Lei Wan
- First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei 230031, China
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19
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Baker L, Chitas AML, Hartley CA, Coppo MJC, Vaz PK, Stent A, Gilkerson JR, Devlin JM, Every AL. Recombinant herpesvirus glycoprotein G improves the protective immune response to Helicobacter pylori vaccination in a mouse model of disease. PLoS One 2014; 9:e96563. [PMID: 24794215 PMCID: PMC4008605 DOI: 10.1371/journal.pone.0096563] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 04/08/2014] [Indexed: 12/12/2022] Open
Abstract
Alphaherpesviruses, which have co-evolved with their hosts for more than 200 million years, evade and subvert host immune responses, in part, by expression of immuno-modulatory molecules. Alphaherpesviruses express a single, broadly conserved chemokine decoy receptor, glycoprotein G (gG), which can bind multiple chemokine classes from multiple species, including human and mouse. Previously, we demonstrated that infection of chickens with an infectious laryngotracheitis virus (ILTV) mutant deficient in gG resulted in altered host immune responses compared to infection with wild-type virus. The ability of gG to disrupt the chemokine network has the potential to be used therapeutically. Here we investigated whether gG from ILTV or equine herpesvirus 1 (EHV-1) could modulate the protective immune response induced by the Helicobacter pylori vaccine antigen, catalase (KatA). Subcutaneous immunisation of mice with KatA together with EHV-1 gG, but not ILTV gG, induced significantly higher anti-KatA IgG than KatA alone. Importantly, subcutaneous or intranasal immunisation with KatA and EHV-1 gG both resulted in significantly lower colonization levels of H. pylori colonization following challenge, compared to mice vaccinated with KatA alone. Indeed, the lowest colonization levels were observed in mice vaccinated with KatA and EHV-1 gG, subcutaneously. In contrast, formulations containing ILTV gG did not affect H. pylori colonisation levels. The difference in efficacy between EHV-1 gG and ILTV gG may reflect the different spectrum of chemokines bound by the two proteins. Together, these data indicate that the immuno-modulatory properties of viral gGs could be harnessed for improving immune responses to vaccine antigens. Future studies should focus on the mechanism of action and whether gG may have other therapeutic applications.
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Affiliation(s)
- Louise Baker
- Centre for Animal Biotechnology, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
| | - Andre M. L. Chitas
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
| | - Carol A. Hartley
- Centre for Equine Infectious Disease, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
| | - Mauricio J. C. Coppo
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
| | - Paola K. Vaz
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
| | - Andrew Stent
- Centre for Animal Biotechnology, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
| | - James R. Gilkerson
- Centre for Equine Infectious Disease, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
| | - Joanne M. Devlin
- Asia-Pacific Centre for Animal Health, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
| | - Alison L. Every
- Centre for Animal Biotechnology, Faculty of Veterinary Science, The University of Melbourne, Parkville, VIC, Australia
- * E-mail:
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Vysakh A, Ratheesh M, Rajmohanan TP, Pramod C, Premlal S, Girish kumar B, Sibi PI. Polyphenolics isolated from virgin coconut oil inhibits adjuvant induced arthritis in rats through antioxidant and anti-inflammatory action. Int Immunopharmacol 2014; 20:124-30. [PMID: 24613207 DOI: 10.1016/j.intimp.2014.02.026] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2013] [Revised: 01/26/2014] [Accepted: 02/19/2014] [Indexed: 11/17/2022]
Abstract
We evaluated the protective efficacy of the polyphenolic fraction from virgin coconut oil (PV) against adjuvant induced arthritic rats. Arthritis was induced by intradermal injection of complete Freund's adjuvant. The activities of inflammatory, antioxidant enzymes and lipid peroxidation were estimated. PV showed high percentage of edema inhibition at a dose of 80mg/kg on 21st day of adjuvant arthritis and is non toxic. The expression of inflammatory genes such as COX-2, iNOS, TNF-α and IL-6 and the concentration of thiobarbituric acid reactive substance were decreased by treatment with PV. Antioxidant enzymes were increased and on treatment with PV. The increased level of total WBC count and C-reactive protein in the arthritic animals was reduced in PV treated rats. Synovial cytology showed that inflammatory cells and reactive mesothelial cells were suppressed by PV. Histopathology of paw tissue showed less edema formation and cellular infiltration on supplementation with PV. Thus the results demonstrated the potential beneficiary effect of PV on adjuvant induced arthritis in rats and the mechanism behind this action is due to its antioxidant and anti-inflammatory effects.
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Affiliation(s)
- A Vysakh
- Department of Applied Microbiology, St. Thomas College, Pala, Kottayam, Kerala, India
| | - M Ratheesh
- Department of Biochemistry, St. Thomas College, Pala, Kottayam, Kerala, India.
| | - T P Rajmohanan
- College of Pharmaceutical Sciences, Government Medical College, Thiruvananthapuram, India
| | - C Pramod
- Department of Pharmacology, University College of Pharmacy, MG University, Kottayam, Kerala, India
| | - S Premlal
- Drug Standardization Unit, Govt. Ayurveda College, Thiruvananthapuram, Kerala, India
| | - B Girish kumar
- Department of Zoology, MSM College, Kayamkulam, Kerala, India
| | - P I Sibi
- Department of Pharmacology, University College of Pharmacy, MG University, Kottayam, Kerala, India
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Petrova A, Smith CM. Immunodetection of a brown planthopper (Nilaparvata lugens Stål) salivary catalase-like protein into tissues of rice, Oryza sativa. Insect Mol Biol 2014; 23:13-25. [PMID: 24164290 DOI: 10.1111/imb.12058] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Saliva plays an important role in host plant-phloem-feeding insect molecular interactions. To better elucidate the role of insect saliva, a series of experiments were conducted to establish if catalase from the salivary glands of the brown planthopper (BPH; Nilaparvata lugens Stål) was secreted into rice host plant tissue during feeding. Catalase is the main enzyme that decomposes hydrogen peroxide (H2O2) at high concentrations. H2O2 is a part of the free radicals system that mediates important physiological roles including signalling and defence. Previous studies have suggested that H2O2 is involved in the rice endogenous response to BPH feeding. If, the BPH secretes catalase into host plant tissue this will counter the effects of H2O2, from detoxification to interfering with plant signalling and defence mechanisms. When BPHs were fed on a hopper-resistant rice variety for 24 h, catalase activity in the salivary glands increased 3.5-fold compared with hoppers fed on a susceptible rice variety. Further supporting evidence of the effects of BPH catalase was demonstrated by immunodetection analyses where results from two independent sources: BPH-infested rice tissue and BPH-probed artificial diets, suggest that the BPH secretes catalase-like protein during feeding. The possible physiological roles of BPH-secreted catalase are discussed.
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Affiliation(s)
- A Petrova
- School of Biological Sciences, Washington State University, Pullman, WA, USA
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Singaram G, Harikrishnan T, Chen FY, Bo J, Giesy JP. Modulation of immune-associated parameters and antioxidant responses in the crab (Scylla serrata) exposed to mercury. Chemosphere 2013; 90:917-928. [PMID: 22840538 DOI: 10.1016/j.chemosphere.2012.06.031] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 05/24/2012] [Accepted: 06/22/2012] [Indexed: 06/01/2023]
Abstract
Organic and inorganic contaminants can suppress immune function in molluscs and crustaceans. It was postulated that metals could modulate immune function in marine crabs. To test this hypothesis, sublethal effects of mercury (Hg) on cellular immune and biochemical responses of crabs were determined. When crabs were exposed for 14 d to environmentally-relevant concentrations of Hg, changes in immune-associated parameters including, total haemocyte count, lysosomal membrane stability, phenoloxidase, super oxide generation and phagocytosis were observed. Oxidative stress, as measured by lipid peroxidation, antioxidant responses, including superoxide dismutase and catalase activities and glutathione-mediated antioxidant enzymes in serum, haemocyte lysate, gills, hepatopancreas and muscle were assessed in crabs exposed to Hg. Exposure to Hg resulted in significantly lesser immune-associated parameters in haemolymph and antioxidants in all tissues studied. Conversely, GST and phenoloxidase activity, were greater in crabs exposed to Hg. Responses of antioxidant parameters (SOD, CAT and GP(x)) were positively correlated with immune responses, including THC, superoxide and phagocytosis. These results were postulated to be due to an immediate response of antioxidant defense to oxygen radicals generated. Overall, the results suggest that 14 d exposure to environmentally realistic concentrations of Hg causes immunomodulation and potentially harmful lessened antioxidant defenses of crabs.
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Affiliation(s)
- Gopalakrishnan Singaram
- Department of Zoology, The Presidency College, University of Madras, Chennai 600 005, India.
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Arockiaraj J, Easwvaran S, Vanaraja P, Singh A, Othman RY, Bhassu S. Molecular cloning, characterization and gene expression of an antioxidant enzyme catalase (MrCat) from Macrobrachium rosenbergii. Fish Shellfish Immunol 2012; 32:670-82. [PMID: 22293093 DOI: 10.1016/j.fsi.2012.01.013] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2011] [Revised: 01/07/2012] [Accepted: 01/13/2012] [Indexed: 05/18/2023]
Abstract
In this study, we reported a full length of catalase gene (designated as MrCat), identified from the transcriptome database of freshwater prawn Macrobrachium rosenbergii. The complete gene sequence of the MrCat is 2504 base pairs in length, and encodes 516 amino acids. The MrCat protein contains three domains such as catalase 1 (catalase proximal heme-ligand signature) at 350-358, catalase 2 (catalase proximal active site signature) at 60-76 and catalase 3 (catalase family profile) at 20-499. The mRNA expressions of MrCat in healthy and the infectious hypodermal and hematopoietic necrosis virus (IHHNV) challenged M. rosenbergii were examined using quantitative real time polymerase chain reaction (qRT-PCR). The MrCat is highly expressed in digestive tract and all the other tissues (walking leg, gills, muscle, hemocyte, hepatopancreas, pleopods, brain and eye stalk) of M. rosenbergii taken for analysis. The expression is strongly up-regulated in digestive tract after IHHNV challenge. To understand its biological activity, the recombinant MrCat gene was constructed and expressed in Escherichia coli BL21 (DE3). The recombinant MrCat existed in high thermal stability and broad spectrum of pH, which showed over 95% enzyme activity between pH 5 and 10.5, and was stable from 40 °C to 70 °C, and exhibited 85-100% enzyme activity from 30 °C to 40 °C.
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Affiliation(s)
- Jesu Arockiaraj
- Centre for Biotechnology in Agriculture Research, Division of Genetics & Molecular Biology, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Zhang Y, Fu D, Yu F, Liu Q, Yu Z. Two catalase homologs are involved in host protection against bacterial infection and oxidative stress in Crassostrea hongkongensis. Fish Shellfish Immunol 2011; 31:894-903. [PMID: 21871567 DOI: 10.1016/j.fsi.2011.08.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 08/10/2011] [Accepted: 08/11/2011] [Indexed: 05/31/2023]
Abstract
Catalase is one of the key antioxidant enzymes and it appears to be involved in protection against immune infection and oxidative stress. Here, two catalase cDNAs (ChCat-1 and ChCat-2) were isolated from hemocytes of Crassostrea hongkongensis using SSH and RACE. The full-length cDNAs of ChCat-1 and ChCat-2 are 1913 and 2466 bp in length, encoding proteins of 515 and 511 amino acids, respectively. Multiple alignments of amino acid sequences revealed that both ChCat-1 and ChCat-2 possess several characteristic features of the catalase family of enzymes, including one proximal active site signature, one heme-ligand signature, and three catalytic amino acid residues (His(72), Asn(145) and Tyr(355)). Phylogenetic analysis indicates that these two catalases may share a common ancestral gene and result from a gene duplication event following the divergence of bivalves and gastropods. Constitutive expression of ChCat-1 and ChCat-2 was observed in all tissues studied, with highest levels of expression in gill and muscle, respectively. The expression of both genes was inducible by bacterial infection, and reached the maximum at 8 h (9.0-fold) and 12 h (2.3-fold) post-infection, respectively. Furthermore, both the purified ChCat-1 and ChCat-2 protein displayed a strong catalase activity, and S2 cells carrying ChCat-1 or ChCat-2 showed a higher degree of resistance to H(2)O(2) than that of control cells. In a word, this is the first report of the presence of two catalase genes in a single marine bivalve, and our results highlight the involvement of both ChCat-1 and ChCat-2 in host protection against pathogen infection and oxidative stress in C. hongkongensis.
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Affiliation(s)
- Yang Zhang
- Key Laboratory of Marine Bio-resources Sustainable Utilization, Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China
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Liu HP, Chen FY, Gopalakrishnan S, Qiao K, Bo J, Wang KJ. Antioxidant enzymes from the crab Scylla paramamosain: gene cloning and gene/protein expression profiles against LPS challenge. Fish Shellfish Immunol 2010; 28:862-871. [PMID: 20153435 DOI: 10.1016/j.fsi.2010.02.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2009] [Revised: 01/27/2010] [Accepted: 02/03/2010] [Indexed: 05/28/2023]
Abstract
Recent studies revealed that antioxidant enzymes play important roles in antioxidant responses caused by metabolic process or pathogen invasion. Catalase is one of these key enzymes which has been characterized and highly conserved from invertebrates to vertebrates. In the present study, a full-length cDNA sequence of catalase was cloned from the hemocyte suppression subtractive hybridization library of the crab Scylla paramamosain. The Sp-catalase (Sp-CAT) cDNA sequence contained 2551bp with an open reading frame of 1551bp encoding 517 amino acid residues. The conserved catalytic active residues His-71, Asn-144 and Tyr-354 were predicted in the amino acid sequence of Sp-CAT. The deduced Sp-CAT protein had a calculated molecular mass of 59 kDa with an estimated isoelectric point of 6.4. Multiple alignment analysis revealed that the deduced amino acid sequence of Sp-CAT shared high identity (75.4%) with those of other species. The Sp-CAT mRNA transcripts were demonstrated in multiple tissues of normal S. paramamosain. After LPS challenge, the expression level of Sp-CAT gene was increased significantly in hemocyte at 3 and 6 h, and in hepatopancreas at 6 h, respectively, determined by quantitative real-time PCR. Furthermore, the activities of CAT and SOD were also measured in different tissues and serum after LPS challenge. The CAT activity was significantly increased at 3, 6, 24 and 48 h in hemocyte lysate, at 3 h in serum, and at 24 and 48 h in hepatopancreas after LPS challenge. In addition, the SOD activity was significantly induced at 3 and 6 h in hemocyte lysate, 3 and 12 h in serum, 12 and 48 h in hepatopancreas post LPS stimulation, indicating a tissue and time-dependent antioxidant response in the crab. Taken together, these data demonstrated that a strong antioxidant response occurred in the LPS-challenged crab, which might be involved in the protection of host against microbial infections.
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Affiliation(s)
- Hai-Peng Liu
- State Key Laboratory of Marine Environmental Science, College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, Fujian, PR China
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Gupta K, Khuller GK, Wanchu A, Laal S, Latawa R, Verma I. Identification of Mycobacterium avium KatG protein (MAV_2753) as a possible serodiagnostic marker for MAC disease. J Infect 2009; 58:170-2. [PMID: 19176248 DOI: 10.1016/j.jinf.2008.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2008] [Accepted: 12/07/2008] [Indexed: 11/28/2022]
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Aleksandrov AV, Gontar' IP, Alekhina II, Zborovskiĭ AB. [Prospects for using antigenic nanosystems in the diagnosis and treatment of inflammatory rheumatic diseases]. TERAPEVT ARKH 2009; 81:48-51. [PMID: 20481049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
AIM To study whether immobilized antigenic nanosystems (ANS) may be designed on the basis of antigens of varying chemical nature to identify and to remove specific antibodies (Ab) from the blood of patients with systemic lupus erythematosus (SLE). SUBJECTS AND METHODS Sixty patients with the diagnosis of SLE verified by the 1997 American College of Rheumatology criteria and 30 apparently healthy individuals were followed up. The levels of Ab to catalase (Cat), xanthine oxidase (XO), and cardiolipin (CL) were measured by enzyme immunoassay, by applying the respective ANS as an antigenic matrix. RESULTS There was a significant relationship of the levels of Ab to Cat and XO to the activity of SLE. It was shown that Ab to Cat and XO could affect the functional activity of serum enzymes. The level of Ab to CL in patients with SLE was found to depend on two parameters - the intensity of the disease and the presence of antiphospholipid syndrome; acute cerebral circulatory disorder and thrombocytopenia were observed to have a significant unidirectional impact on the level of Ab to CL. Immobilized CL-based ANSs were effective in eliminating Ab to CL from the whole blood of patients with SLE, without resulting in a significant hemolysis of blood corpuscles and in a reduction of total protein concentrations. CONCLUSION The development and introduction of preventive methods for the early diagnosis of SLE may be extended, by using ANS based on Cat, XO, and CL antigen. The designing and putting into practice novel ANS-based hemosorbents may allow immunosorption to occupy a prominent place in the pathogenetic therapy of inflammatory autoimmune diseases.
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Chen ES, Wahlström J, Song Z, Willett MH, Wikén M, Yung RC, West EE, McDyer JF, Zhang Y, Eklund A, Grunewald J, Moller DR. T cell responses to mycobacterial catalase-peroxidase profile a pathogenic antigen in systemic sarcoidosis. J Immunol 2008; 181:8784-96. [PMID: 19050300 PMCID: PMC2700300 DOI: 10.4049/jimmunol.181.12.8784] [Citation(s) in RCA: 123] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Sarcoidosis is a systemic granulomatous disease associated with local epithelioid granulomas, CD4(+) T cells, and Th1 cytokines. The tissue Ags that drive this granulomatous inflammation are uncertain. In this study, we used IFN-gamma-ELISPOT assays and flow cytometry to assess lung and blood T cell responses to the candidate pathogenic Ag, Mycobacterium tuberculosis catalase-peroxidase (mKatG) in patients with sarcoidosis from two centers. Despite differences in patient phenotypic, genetic, and prognostic characteristics, we report that T cell responses to mKatG were remarkably similar in these cohorts, with higher frequencies of mKatG-reactive, IFN-gamma-expressing T cells in the blood of sarcoidosis patients compared with nontuberculosis sensitized healthy controls, and (in a subset) in greater numbers than T cells reactive to purified protein derivative. In sarcoidosis, mKatG-reactive CD4(+) Th1 cells preferentially accumulated in the lung, indicating a compartmentalized response. Patients with or without Löfgren syndrome had similar frequencies of mKatG specific IFN-gamma-expressing blood T cells. Circulating mKatG-reactive T cells were found in chronic active sarcoidosis but not in patients with inactive disease. Together, these results demonstrate that T cell responses to mKatG in sarcoidosis fit a profile expected for a pathogenic Ag, supporting an immunotherapeutic approach to this disease.
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Affiliation(s)
- Edward S. Chen
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Jan Wahlström
- Respiratory Medicine Unit, Department of Medicine at Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - Zhimin Song
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Matthew H. Willett
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Maria Wikén
- Respiratory Medicine Unit, Department of Medicine at Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - Rex C. Yung
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Erin E. West
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - John F. McDyer
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | - Ying Zhang
- Department of Molecular Microbiology and Immunology, The Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205
| | - Anders Eklund
- Respiratory Medicine Unit, Department of Medicine at Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - Johan Grunewald
- Respiratory Medicine Unit, Department of Medicine at Karolinska University Hospital and Karolinska Institutet, Stockholm, Sweden
| | - David R. Moller
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University School of Medicine, Baltimore, MD 21205
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Zhao JL, Gao XZ, Qu M. [Killing effect of polymorphonuclear neutrophils on Trichomonas vaginalis]. Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi 2008; 26:366-369. [PMID: 19157301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To study the killing effect of polymorphonuclear neutrophils (PMNs) on Trichomonas vaginalis. METHODS The vaginal secretion from a patient with vaginitis was incubated in the liver infusion liquid medium to get T. vaginalis. One ml serum was collected from the patient and heated for 30 min at 56 degrees C to inactivate complement in serum, and was absorbed three times with the parasites at 0 degree C to make the serum free of antibodies. PMNs were separated from the patient's blood and purified with density gradient centrifugation and polymer accelerating sedimentation. NBT and safranin O were used to stain the sample. The interaction between PMNs and the parasites was observed under microscope. 300 trichomonads and 3x10(4) PMNs were incubated for 10, 20, 30, 40, 50, 60 minutes under the conditions of aerobic or anaerobic, with superoxide dismutase (SOD) and catalase (CAT) or without SOD and CAT, and with complement or without complement. They were then inoculated in solid medium for another five days under the anaerobic condition, and surviving organisms were enumerated. RESULTS PMNs were observed to surround and kill a single trichomonad. In the petri-dish containing PMNs, the surviving rate of the parasites in anaerobic condition was 85%, only 3% in aerobic condition (P<0.01). SOD and CAT reduced the killing effect of PMNs, with a surviving rate of 98% and 94% respectively after 60 min incubation. Without SOD and CAT, the surviving rate is only 2% (P<0.05). PMNs in the serum without antibodies killed all the parasites, while the complement-inactivated serum fail to kill them. CONCLUSION The trichomonacidal activity of PMNs relies on the presence of oxygen and complement in the serum of patient.
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Affiliation(s)
- Jian-Ling Zhao
- Department of Parasitology, Hebei Northern University, Zhangjiakou 075000, China.
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Aleksandrov AV, Alekhina II, Rasem S, Gontar' IP. [Detection of serum catalase antibodies in patients with inflammatory rheumatic diseases by immobilized magnetic sorbents]. Klin Lab Diagn 2008:39-42. [PMID: 18756734] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Sixty patients with systemic lupus erythematosus, 48 patients with rheumatoid arthritis, and 30 healthy individuals (a control group) were examined. Modified procedures for enzyme immunoassay (EIA) and immunofluorescence (IF) assays with an immobilized magnetic sorbent (MS) based on catalase as an antigenic matrix were used to detect catalase antibodies (Ab). The application of immobilized MSs and a photoelectric digital display attachment to a fluorescence microscope permits measurements of Ab to soluble antigens (catalase) in the IF assay. Nevertheless, for detection of catalase Ab in laboratory practice, preference should be given to EIA using a MS as a more sensitive procedure.
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Lin HJ, Yang Q, Li J, Liu Y, Wang QY. [Immunization with catalase and UreB two-valence vaccine for preventing Helicobacter pylori infection in mice]. Nan Fang Yi Ke Da Xue Xue Bao 2008; 28:436-437. [PMID: 18359706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To investigate the effects of the two-valence vaccine consisting of Helicobacter pylori (H. pylori) catalase and urease subunit UreB in preventing H. pyloriinfection in mice. METHODS C57BL/6 mice were divided into 7 groups and immunized with intragastric administration of catalase and UreB (both 100 microg) plus cholera toxin (CT, 2 microg), catalase (100 microg) plus CT (2 microg), UreB (100 microg) plus CT (2 microg), catalase (100 microg), UreB (100 microg), CT (2 microg), or PBS, respectively, once a week for 4 consecutive weeks. Two weeks after the last immunization, all the mice were challenged by live H. pylori, and sacrificed 4 weeks after the challenge to obtain the gastric mucosa samples for detecting H. pylori using semi-quantitative bacterial culture assay. RESULTS The total protection rate in mice immunized with the two-valence vaccine, single-valence vaccine of catalase, and single-valence vaccine of UreB was 83.3% (20/24), 41.7% (10/24) and 54.2% (13/24), respectively, and the rate in the other 4 groups were all 0. The H. pyloricolony density in mice with vaccination was significantly lower than that of other 4 groups (P<0.05). The total protection rate and H. pylori colony density differed significantly between the two-valence vaccination group and the single-valence vaccination groups (P<0.05). CONCLUSION The two-valence vaccine consisting of catalase, UreB and adjuvant has better immunoprotective effects than the single-valence vaccines.
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Affiliation(s)
- Huan-jian Lin
- Department of Gastroenterology, People's Hospital of Guangdong Province, Guangzhou 510080, China
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Alyamani EJ, Brandt P, Pena JA, Major AM, Fox JG, Suerbaum S, Versalovic J. Helicobacter hepaticus catalase shares surface-predicted epitopes with mammalian catalases. Microbiology 2007; 153:1006-1016. [PMID: 17379710 DOI: 10.1099/mic.0.29184-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Helicobacter hepaticus colonizes the murine intestine and has been associated with hepatic inflammation and neoplasia in susceptible mouse strains. In this study, the catalase of an enterohepatic Helicobacter was characterized for the first time. H. hepaticus catalase is a highly conserved enzyme that may be important for bacterial survival in the mammalian intestine. Recombinant H. hepaticus catalase was expressed in Escherichia coli in order to verify its enzymic activity in vitro. H. hepaticus catalase comprises 478 amino acids with a highly conserved haem-ligand domain. Three conserved motifs (R-F-Y-D, RERIPER and VVHAKG) in the haem-ligand domain and three surface-predicted motifs were identified in H. hepaticus catalase and are shared among bacterial and mammalian catalases. H. hepaticus catalase is present in the cytoplasmic and periplasmic compartments. Mice infected with H. hepaticus demonstrated immune responses to murine and H. hepaticus catalase, suggesting that Helicobacter catalase contains conserved structural motifs and may contribute to autoimmune responses. Antibodies to H. hepaticus catalase recognized murine hepatocyte catalase in hepatic tissue from infected mice. Antibodies from sera of H. hepaticus-infected mice reacted with peptides comprising two conserved surface-predicted motifs in H. hepaticus catalase. Catalases are highly conserved enzymes in bacteria and mammals that may contribute to autoimmune responses in animals infected with catalase-producing pathogens.
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Affiliation(s)
- Essam J Alyamani
- Department of Pathology, Texas Children's Hospital, Houston, TX 77030, USA
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 01225, USA
| | | | - Jeremy A Pena
- Department of Pathology, Texas Children's Hospital, Houston, TX 77030, USA
| | - Angela M Major
- Department of Pathology, Texas Children's Hospital, Houston, TX 77030, USA
| | - James G Fox
- Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Sebastian Suerbaum
- Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Hannover, Germany
| | - James Versalovic
- Department of Pathology, Texas Children's Hospital, Houston, TX 77030, USA
- Departments of Pathology, Molecular Virology & Microbiology, and Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
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Abstract
The etiology of sarcoidosis remains uncertain. The hallmark of sarcoidosis is the epithelioid granuloma, which serves as a necessary starting point for considering disease etiology. Any etiologic agent of sarcoidosis must also explain the typical clinical behaviors and characteristic immunopathologic features of the disease. One clinical observation that serves as a bridge to the etiology of sarcoidosis is the Kveim reaction. In this reaction, local epithelioid granulomas develop several weeks after the intradermal injection of homogenates of sarcoidosis tissue. Our group capitalized on the known properties of the Kveim reagent to search for candidate pathogenic tissue antigens in sarcoidosis without other a priori hypotheses regarding possible microbial or autoimmune etiologies. Using a limited proteomics approach based on the physicochemical properties of Kveim reagent, we detected a limited number of poorly soluble antigenic proteins in sarcoidosis tissues by protein immunoblotting, using sarcoidosis sera. Matrix-associated laser desorption/ionization-time of flight mass spectrometry identified one of these antigens to be the Mycobacterium tuberculosis catalase-peroxidase protein (mKatG). We found IgG responses to recombinant mKatG in more than 50% of patients with sarcoidosis but rarely in purified protein derivative (PPD)-negative control subjects. These findings support the conclusion that mKatG is a tissue antigen and target of the adaptive immune response in sarcoidosis, providing further evidence of a mycobacterial etiology in a subset of sarcoidosis. More generally, the approach used in these studies might be employed to discover and validate other candidate pathogenic antigens in sarcoidosis or other granulomatous disorders.
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Affiliation(s)
- David R Moller
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, 5501 Hopkins Bayview Circle, Baltimore, MD 21224, USA.
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Reynaert NL, Aesif SW, McGovern T, Brown A, Wouters EFM, Irvin CG, Janssen-Heininger YMW. Catalase overexpression fails to attenuate allergic airways disease in the mouse. J Immunol 2007; 178:3814-21. [PMID: 17339480 PMCID: PMC2830272 DOI: 10.4049/jimmunol.178.6.3814] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Oxidative stress is a hallmark of asthma, and increased levels of oxidants are considered markers of the inflammatory process. Most studies to date addressing the role of oxidants in the etiology of asthma were based on the therapeutic administration of low m.w. antioxidants or antioxidant mimetic compounds. To directly address the function of endogenous hydrogen peroxide in the pathophysiology of allergic airway disease, we comparatively evaluated mice systemically overexpressing catalase, a major antioxidant enzyme that detoxifies hydrogen peroxide, and C57BL/6 strain matched controls in the OVA model of allergic airways disease. Catalase transgenic mice had 8-fold increases in catalase activity in lung tissue, and had lowered DCF oxidation in tracheal epithelial cells, compared with C57BL/6 controls. Despite these differences, both strains showed similar increases in OVA-specific IgE, IgG1, and IgG2a levels, comparable airway and tissue inflammation, and identical increases in procollagen 1 mRNA expression, following sensitization and challenge with OVA. Unexpectedly, mRNA expression of MUC5AC and CLCA3 genes were enhanced in catalase transgenic mice, compared with C57BL/6 mice subjected to Ag. Furthermore, when compared with control mice, catalase overexpression increased airway hyperresponsiveness to methacholine both in naive mice as well as in response to Ag. In contrast to the prevailing notion that hydrogen peroxide is positively associated with the etiology of allergic airways disease, the current findings suggest that endogenous hydrogen peroxide serves a role in suppressing both mucus production and airway hyperresponsiveness.
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Affiliation(s)
- Niki L. Reynaert
- Department of Pathology, University of Vermont, Burlington VT 05405
- Department of Respiratory Medicine, Maastricht University, Maastricht, The Netherlands
| | - Scott W. Aesif
- Department of Pathology, University of Vermont, Burlington VT 05405
| | - Toby McGovern
- Department of Pathology, University of Vermont, Burlington VT 05405
| | - Amy Brown
- Department of Pathology, University of Vermont, Burlington VT 05405
| | - Emiel F. M. Wouters
- Department of Respiratory Medicine, Maastricht University, Maastricht, The Netherlands
| | - Charles G. Irvin
- Department of Medicine, University of Vermont, Burlington VT 05405
| | - Yvonne M. W. Janssen-Heininger
- Department of Pathology, University of Vermont, Burlington VT 05405
- Department of Respiratory Medicine, Maastricht University, Maastricht, The Netherlands
- Address correspondence and reprint requests to Dr. Yvonne M. W. Janssen-Heininger, Department of Pathology, University of Vermont, HSRF Building, Room 216A, Burlington, VT 05405.
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Chávez V, Mohri-Shiomi A, Maadani A, Vega LA, Garsin DA. Oxidative stress enzymes are required for DAF-16-mediated immunity due to generation of reactive oxygen species by Caenorhabditis elegans. Genetics 2007; 176:1567-77. [PMID: 17483415 PMCID: PMC1931534 DOI: 10.1534/genetics.107.072587] [Citation(s) in RCA: 160] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Caenorhabditis elegans has recently been developed as a model for microbial pathogenesis, yet little is known about its immunological defenses. Previous work implicated insulin signaling in mediating pathogen resistance in a manner dependent on the transcriptional regulator DAF-16, but the mechanism has not been elucidated. We present evidence that C. elegans, like mammalian phagocytes, produces reactive oxygen species (ROS) in response to pathogens. Signs of oxidative stress occur in the intestine - the site of the host-pathogen interface - suggesting that ROS release is localized to this tissue. Evidence includes the accumulation of lipofuscin, a pigment resulting from oxidative damage, at this site. In addition, SOD-3, a superoxide dismutase regulated by DAF-16, is induced in intestinal tissue after exposure to pathogenic bacteria. Moreover, we show that the oxidative stress response genes sod-3 and ctl-2 are required for DAF-16-mediated resistance to Enterococcus faecalis using a C. elegans killing assay. We propose a model whereby C. elegans responds to pathogens by producing ROS in the intestine while simultaneously inducing a DAF-16-dependent oxidative stress response to protect adjacent tissues. Because insulin-signaling mutants overproduce oxidative stress response enzymes, the model provides an explanation for their increased resistance to pathogens.
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Affiliation(s)
- Violeta Chávez
- Department of Microbiology and Molecular Genetics, The University of Texas Health Science Center, Houston, Texas 77030, USA
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Nowak K, Weih S, Metzger R, Albrecht RF, Post S, Hohenberger P, Gebhard MM, Danilov SM. Immunotargeting of catalase to lung endothelium via anti-angiotensin-converting enzyme antibodies attenuates ischemia-reperfusion injury of the lung in vivo. Am J Physiol Lung Cell Mol Physiol 2007; 293:L162-9. [PMID: 17435080 DOI: 10.1152/ajplung.00001.2007] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Limitation of reactive oxygen species-mediated ischemia-reperfusion (I/R) injury of the lung by vascular immunotargeting of antioxidative enzymes has the potential to become a promising modality for extension of the viability of banked transplantation tissue. The preferential expression of angiotensin-converting enzyme (ACE) in pulmonary capillaries makes it an ideal target for therapy directed toward the pulmonary endothelium. Conjugates of ACE monoclonal antibody (MAb) 9B9 with catalase (9B9-CAT) have been evaluated in vivo for limitation of lung I/R injury in rats. Ischemia of the right lung was induced for 60 min followed by 120 min of reperfusion. Sham-operated animals (sham, n = 6) were compared with ischemia-reperfused untreated animals (I/R, n = 6), I/R animals treated with biotinylated catalase (CAT, n = 6), and I/R rats treated with the conjugates (9B9-CAT, n = 6). The 9B9-CAT accumulation in the pulmonary endothelium of injured lungs was elucidated immunohistochemically. Arterial oxygenation during reperfusion was significantly higher in 9B9-CAT (221 +/- 36 mmHg) and sham (215 +/- 16 mmHg; P < 0.001 for both) compared with I/R (110 +/- 10 mmHg) and CAT (114 +/- 30 mmHg). Wet-dry weight ratio of I/R (6.78 +/- 0.94%) and CAT (6.54 +/- 0.87%) was significantly higher than of sham (4.85 +/- 0.29%; P < 0.05), which did not differ from 9B9-CAT (5.58 +/- 0.80%). The significantly lower degree of lung injury in 9B9-CAT-treated animals compared with I/R rats was also shown by decreased serum levels of endothelin-1 (sham, 18 +/- 9 fmol/mg; I/R, 42 +/- 12 fmol/mg; CAT, 36 +/- 11 fmol/mg; 9B9-CAT, 26 +/- 9 fmol/mg; P < 0.01) and mRNA for inducible nitric oxide synthase (iNOS) [iNOS-GAPDH ratio: sham, 0.15 +/- 0.06 arbitrary units (a.u.); I/R, 0.33 +/- 0.08 a.u.; CAT, 0.26 +/- 0.05 a.u.; 9B9-CAT, 0.14 +/- 0.04 a.u.; P < 0.001]. These results validate immunotargeting by anti-ACE conjugates as a prospective and specific strategy to augment antioxidative defenses of the pulmonary endothelium in vivo.
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Affiliation(s)
- Kai Nowak
- Department of Surgery, Clinical Medical Faculty Mannheim, University of Heidelberg, Heidelberg, Germany.
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Cunha LT, Pugine SP, Valle CR, Ribeiro AR, Costa EJX, De Melo MP. Effect of Prototheca zopfii on neutrophil function from bovine milk. Mycopathologia 2006; 162:421-6. [PMID: 17146586 DOI: 10.1007/s11046-006-0078-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2006] [Accepted: 10/24/2006] [Indexed: 10/23/2022]
Abstract
This study was carried to investigate neutrophil function in the presence of Prototheca zopfii. For this purpose, bovine milk neutrophils were incubated in the absence (control) of and presence of P. zopfii, and then they were examined hydrogen peroxide (H(2)O(2)) production, antioxidant enzyme activities, and phagocytic capacity. Milk was collected from negative "California Mastitis Test" (CMT) quarter from three lactating Holstein cows after induction of leukocytosis with an intramammary infusion of oyster glycogen. H(2)O(2) production was measured using the phenol red method. Catalase activity was measured following H(2)O(2) reduction at 240 nm and the activity of glutathione reductase was determined by measuring the rate of NADPH oxidation at 340 nm. P. zopfii death was assessed by fluorescent microscopy using acridine orange assay and by colony forming units (CFUs). Comparisons between the groups were initially performed by analysis of variance (ANOVA). Significant differences were then compared using Tukey's test with a significance coefficient of 0.05. Hydrogen peroxide production, catalase and glutathione reductase activities by neutrophils incubated in presence of P. zopfii were stimulated five times, 21% and 27% respectively, compared to the unstimulated-neutrophils. Neutrophils did not affect P. zopfii death as shown by microscopy and CFUs. These observations led to the conclusion that the P. zopfii promote a high increase of H(2)O(2) production by neutrophils from bovine milk during algae exposition accompanied by increase of antioxidant enzyme activities; however, this process did not affect P. zopfii death.
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Affiliation(s)
- Luciane T Cunha
- Departament of Basic Science, Faculty of Zootechny and Food Engineering-FZEA, Universidade de São Paulo, Av Duque de Caxias Norte, 225, 13635-000, Pirassununga, SP, Brazil
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Drake WP, Dhason MS, Nadaf M, Shepherd BE, Vadivelu S, Hajizadeh R, Newman LS, Kalams SA. Cellular recognition of Mycobacterium tuberculosis ESAT-6 and KatG peptides in systemic sarcoidosis. Infect Immun 2006; 75:527-30. [PMID: 17088357 PMCID: PMC1828402 DOI: 10.1128/iai.00732-06] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Sarcoidosis is an enigmatic disease with a pathology similar to that of tuberculosis. We detected Th-1 immune responses to Mycobacterium tuberculosis ESAT-6 and KatG peptides from peripheral blood mononuclear cells from 15/26 sarcoidosis, 1/24 purified-protein-derivative-negative (PPD-) (P < 0.0001, Fisher's exact test), and 7/8 PPD-positive (PPD+) subjects (P = 0.21). This finding provides immunologic links between mycobacteria and systemic sarcoidosis.
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Affiliation(s)
- Wonder P Drake
- Division of Infectious Diseases, Department of Medicine,Vanderbilt University School of Medicine, 1161 21st Avenue, AA2200 MCN, Nashville, TN 37232, USA.
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Li Y, Ning YS, Long M, Dong WQ, Li M. [Cloning, expression and identification of catalase of Helicobacter pylori]. Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi 2006; 22:440-2, 446. [PMID: 16806003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
AIM To construct the recombinant plasmid containing catalase (KatA) of Helicobacter pylori (Hp), analyze its nucleic acid sequence, express it in E. coli and study its antigenicity. METHODS KatA fragments were amplified from Hp chromosomal DNA by PCR. Its T-A was cloned, sequenced and compared with other HP strains on the GenBank. Then the gene cloned into pGEX-4T-1 fusion expression vector was expressed in E. coli and purified by GST-affinity chromatography. The purified product was used to identify 29 stains of mouse anti Hp monoclonal antibodies and analyze antigenicity with serum of Hp-infected patients by Western blot. RESULTS KatA fragments were composed of 1,515 bp (GenBank No. DQ333889) and the nucleotide homology with other Hp strains on the GenBank was 96%-97%. 85 kDa of the recombinant KatA-pGEX-4T-1 was expressed in E. coli. 4 of 29 anti-Hp mouse monoclonal antibodies were against KatA. Western blot analysis proved that KatA was specifically recognized in the serum of Hp-infected patients. CONCLUSION The recombinant KatA has original antigenicity. It is of great value to clinical sero-diagnosis and vaccine study of Hp.
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Affiliation(s)
- Yan Li
- Department of Tropical Diseases, School of Biotechnology, Southern Medical University, Guangzhou 510515, China.
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Makkar RS, Contreras MA, Paintlia AS, Smith BT, Haq E, Singh I. Molecular organization of peroxisomal enzymes: protein-protein interactions in the membrane and in the matrix. Arch Biochem Biophys 2006; 451:128-40. [PMID: 16781659 DOI: 10.1016/j.abb.2006.05.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2006] [Revised: 05/03/2006] [Accepted: 05/04/2006] [Indexed: 11/30/2022]
Abstract
The beta-oxidation of fatty acids in peroxisomes produces hydrogen peroxide (H2O2), a toxic metabolite, as a bi-product. Fatty acids beta-oxidation activity is deficient in X-linked adrenoleukodystrophy (X-ALD) because of mutation in ALD-gene resulting in loss of very long chain acyl-CoA synthetase (VLCS) activity. It is also affected in disease with catalase negative peroxisomes as a result of inactivation by H2O2. Therefore, the following studies were undertaken to delineate the molecular interactions between both the ALD-gene product (adrenoleukodystrophy protein, ALDP) and VLCS as well as H2O2 degrading enzyme catalase and proteins of peroxisomal beta-oxidation. Studies using a yeast two hybrid system and surface plasmon resonance techniques indicate that ALDP, a peroxisomal membrane protein, physically interacts with VLCS. Loss of these interactions in X-ALD cells may result in a deficiency in VLCS activity. The yeast two-hybrid system studies also indicated that catalase physically interacts with L-bifunctional enzyme (L-BFE). Interactions between catalase and L-BFE were further supported by affinity purification, using a catalase-linked resin. The affinity bound 74-kDa protein, was identified as L-BFE by Western blot with specific antibodies and by proteomic analysis. Additional support for their interaction comes from immunoprecipitation of L-BFE with antibodies against catalase as a catalase- L-BFE complex. siRNA for L-BFE decreased the specific activity and protein levels of catalase without changing its subcellular distribution. These observations indicate that L-BFE might help in oligomerization and possibly in the localization of catalase at the site of H2O2 production in the peroxisomal beta-oxidation pathway.
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Affiliation(s)
- Randhir S Makkar
- The Charles Darby Children's Research Institute, Department of Pediatrics, Medical University of South Carolina, Charleston, SC 29425, USA
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41
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Rehan M, Younus H. Effect of organic solvents on the conformation and interaction of catalase and anticatalase antibodies. Int J Biol Macromol 2006; 38:289-95. [PMID: 16677702 DOI: 10.1016/j.ijbiomac.2006.03.023] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2005] [Revised: 03/22/2006] [Accepted: 03/22/2006] [Indexed: 11/28/2022]
Abstract
Effect of six organic solvents-methanol, ethanol, propanol, dimethyl sulphoxide (DMSO), N,N-dimethyl formamide (DMF), and glycerol on the conformation and interaction of catalase and anticatalase antibodies were studied with the aim of identifying the solvents in which antigen-antibody interactions are strong. The antigen binding activity of the antibodies in the various organic solvents increased in the following order: ethanol<methanol<no organic solvent<propanol<DMSO<DMF<glycerol. The structure of both the antibody and the antigen molecule was affected significantly in 40% concentration of the organic solvents used in this study. Catalase activity was inhibited in DMSO. However, the enzyme was activated in DMF upto about 50% of its concentration.
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Affiliation(s)
- Mohd Rehan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh 202002, India
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Kota S, Misra HS. PprA: A protein implicated in radioresistance of Deinococcus radiodurans stimulates catalase activity in Escherichia coli. Appl Microbiol Biotechnol 2006; 72:790-6. [PMID: 16586106 DOI: 10.1007/s00253-006-0340-7] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2005] [Revised: 01/15/2006] [Accepted: 01/15/2006] [Indexed: 11/27/2022]
Abstract
PprA: a pleiotropic protein promoting DNA repair, role in radiation resistance of Deinococcus radiodurans was demonstrated. In this study, the effect of radiation and oxidative stress on transgenic Escherichia coli expressing pprA has been studied. The pprA gene from D. radiodurans KR1 was cloned and expressed in E. coli. Transgenic E. coli cells expressing PprA showed twofold to threefold higher tolerance to hydrogen peroxide as compared to control. The 2.8-fold in vivo stimulation of catalase activity largely contributed by KatE was observed as compared to nonrecombinant control. Furthermore, the purified PprA could stimulate the E. coli catalase activity by 1.7-fold in solution. The effect of PprA on catalase activity observed both in vivo and in vitro was reverted to normal levels in the presence of PprA antibodies. The results suggest that enhanced oxidative stress tolerance in E. coli expressing PprA was due to the PprA stimulation of catalase activity, perhaps through the interaction of these proteins.
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Affiliation(s)
- Swathi Kota
- Molecular Biology Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
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Kamiya S. [Prospects of development of H. pylori vaccines]. Nihon Rinsho 2005; 63 Suppl 11:600-4. [PMID: 16363609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Affiliation(s)
- Shigeru Kamiya
- Department of Infectious Diseases, Kyorin University School of Medicine
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Guy B, Krell T, Sanchez V, Kennel A, Manin C, Sodoyer R. Do Th1 or Th2 sequence motifs exist in proteins? Identification of amphipatic immunomodulatory domains in Helicobacter pylori catalase. Immunol Lett 2005; 96:261-75. [PMID: 15585332 DOI: 10.1016/j.imlet.2004.09.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2004] [Revised: 08/24/2004] [Accepted: 09/06/2004] [Indexed: 11/22/2022]
Abstract
The reasons why some proteins induce a particular type of T helper (Th) response are of fundamental importance but only partially understood. In the present study, amphipatic sequence motifs were identified in N- and C-terminal domains of Helicobacter pylori (Hp) catalase, which are linked to the induction of Th1 or Th2 immune responses, respectively. Alignment of these motifs with other proteins known to induce either Th1 or Th2 responses has lead to the identification of Th1 and Th2 consensus motifs, termed modulotopes. Their immunomodulatory potential was demonstrated by immunisation experiments using recombinant proteins comprising the C-terminal domain of catalase fused with one or several modulotopes and by co-immunisations of C- or N-terminal catalase domains with peptides containing these motifs. In addition to these in vivo data, in vitro assays using Limulus extracts suggested that modulotopes might interfere with responses triggered by danger signals such as LPS. Th1 and Th2 modulotopes are characterised by a specific hydrophobic/hydrophilic pattern, which might be the structural determinant for their activity. Our data suggest that Th1 and/or Th2 motifs may generally exist on proteins, thus offering the possibility of a rational modulation of the immune response.
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Affiliation(s)
- Bruno Guy
- Research Department, Aventis Pasteur, Campus Merieux, 69280 Marcy l'Etoile, France.
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Song Z, Marzilli L, Greenlee BM, Chen ES, Silver RF, Askin FB, Teirstein AS, Zhang Y, Cotter RJ, Moller DR. Mycobacterial catalase-peroxidase is a tissue antigen and target of the adaptive immune response in systemic sarcoidosis. J Exp Med 2005; 201:755-67. [PMID: 15753209 PMCID: PMC2212832 DOI: 10.1084/jem.20040429] [Citation(s) in RCA: 234] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2004] [Accepted: 01/06/2005] [Indexed: 11/04/2022] Open
Abstract
Sarcoidosis is a disease of unknown etiology characterized by noncaseating epithelioid granulomas, oligoclonal CD4(+) T cell infiltrates, and immune complex formation. To identify pathogenic antigens relevant to immune-mediated granulomatous inflammation in sarcoidosis, we used a limited proteomics approach to detect tissue antigens that were poorly soluble in neutral detergent and resistant to protease digestion, consistent with the known biochemical properties of granuloma-inducing sarcoidosis tissue extracts. Tissue antigens with these characteristics were detected with immunoglobulin (Ig)G or F(ab')(2) fragments from the sera of sarcoidosis patients in 9 of 12 (75%) sarcoidosis tissues (150-160, 80, or 60-64 kD) but only 3 of 22 (14%) control tissues (all 62-64 kD; P = 0.0006). Matrix-assisted laser desorption/ionization time of flight mass spectrometry identified Mycobacterium tuberculosis catalase-peroxidase (mKatG) as one of these tissue antigens. Protein immunoblotting using anti-mKatG monoclonal antibodies independently confirmed the presence of mKatG in 5 of 9 (55%) sarcoidosis tissues but in none of 14 control tissues (P = 0.0037). IgG antibodies to recombinant mKatG were detected in the sera of 12 of 25 (48%) sarcoidosis patients compared with 0 of 11 (0%) purified protein derivative (PPD)(-) (P = 0.0059) and 4 of 10 (40%) PPD(+) (P = 0.7233) control subjects, suggesting that remnant mycobacterial catalase-peroxidase is one target of the adaptive immune response driving granulomatous inflammation in sarcoidosis.
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Affiliation(s)
- Zhimin Song
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, The Johns Hopkins University Bloomberg School of Public Health, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
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Abstract
Among the variety of virulence factors of Entamoeba histolytica, an adherence lectin (Gal/GalNAc, 260 kDa) is known to mediate colonization and subsequent host responses. Gal/GalNAc lectin is universally recognized by the immune sera of patients with amoebic liver abscess. It plays a crucial role in cytolysis and phagocytosis of human and rat colonic mucin glycoproteins. The objective of the present study was to elucidate the role of antioxidants in E. histolytica Gal/GalNAc lectin-induced signals in the target epithelial cells. We have attempted to define a pathway in target cells, Henle-407 cells (human intestinal epithelial cell line), that could link this immunodominant antigen to a known biological pathway for target cell activation and triggering of subsequent disease pathology/parasite survival. Since several workers have demonstrated that cAMP and cGMP may act as important cellular signals for altering ion transport, so in the present study, cAMP and cGMP levels were measured in Henle-407 cells which showed significant increase at 15 min after stimulation. Elevated cAMP and cGMP levels are implicated in altered electrolyte transport and conductance. Results showed that there were increased levels of ROS and RNI which led to reduced activities of antioxidant enzymes--catalase, superoxide dismutase and glutathione peroxidase. Despite the increased glutathione (reduced) levels, the enzymes were not able to combat the damage caused by ROS and RNI. Thus, there was an increased local concentration of the free radicals and reduced activities of all the three enzymes which could damage the target cell in terms of cytoskeleton and permeability changes.
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Affiliation(s)
- S Rawal
- Department of Experimental Medicine and Biotechnology, Post-graduate Institute of Medical Education and Research, Sector-12, Chandigarh 160 012, India
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Li GQ, Chen MH, Zhu SL, Chen J, Jiao ZY, Chen W, Hu PJ. Therapeutic vaccination against Helicobacter pylori infection with attenuated recombinant Salmonella typhimurium urease B subunit and catalase in mice. ACTA ACUST UNITED AC 2004; 5:72-5. [PMID: 15612661 DOI: 10.1111/j.1443-9573.2004.00159.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To investigate the effects of oral immunization with attenuated recombinant Salmonella typhimurium urease B subunit and catalase vaccines in the treatment of Helicobacter pylori infection in a H. pylori infected mouse model. METHODS Thirty C57BL/6 mice were randomized into three groups and challenged twice with oral administration of H. pylori within 3 days. Four weeks after the second challenge, the mice were immunized by oral administration of attenuated recombinant S. typhimurium urease B subunit (group A), attenuated recombinant S. typhimurium catalase (group B) or saline (group C), and all mice were killed 4 weeks later. The stomachs were collected for a rapid urease test, modified Giemsa staining and quantitative culture to observe the density of H. pylori, hematoxylin-eosin staining was performed to assess the presence of inflammation and lymphocytes from the spleen were used for the lymphoproliferation assay. RESULTS The gastric H. pylori density of groups A, B and C was 1.58 x 10(5) c.f.u./g, 4.88 x 10(5) c.f.u./g and 1.92 x 10(6) c.f.u./g, respectively. The H. pylori density was significantly decreased in the therapeutic groups (P < 0.05). No significant inflammation was found in any group of mice. The lymphoproliferation assays of groups A and B were positive. CONCLUSION Immunization with oral attenuated recombinant S. typhimurium urease B subunit and catalase vaccines is effective in reducing the density of H. pylori colonization.
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Affiliation(s)
- Guo Qing Li
- Department of Gastroenterology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Magliozzi R, Nardacci R, Scarsella G, Di Carlo V, Stefanini S. Effects of the plasticiser DEHP on lung of newborn rats: catalase immunocytochemistry and morphometric analysis. Histochem Cell Biol 2003; 120:41-9. [PMID: 12802597 DOI: 10.1007/s00418-003-0543-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/15/2003] [Indexed: 10/26/2022]
Abstract
Experimental administration of di-(2-ethylexyl)-phthalate (DEHP), a plasticiser employed in the fabrication of polyvinyl chloride (PVC), causes increases in lipid metabolising enzymes along with marked peroxisomal proliferation. The effects are found in several mammalian tissues, of which the rodent liver is the most responsive target. Leakage of DEHP from PVC devices is favoured by high temperature and contact with lipid-containing biological fluids. Since preterm babies are currently ventilated through endotracheal PVC tubes, it seemed worthwhile to investigate DEHP effects on immature mammalian lung. In this research, female rats were fed with DEHP in the last week of pregnancy and after delivery, and lungs were excised from 2-day-old pups. At this age, in fact, rat lung histological features closely resemble those found in 24- to 36-week-old human fetuses. In treated animals, morphometric analysis of histological parameters revealed a dramatic decrease in the number of parenchymal airspaces, together with significant increases in their mean size. Moreover, cytochemical detection of the peroxisomal marker catalase revealed an increase in the number of type II pneumocytes. Our findings closely resemble abnormal histological features observed in autoptic lung specimens from children affected with chronic lung diseases.
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Affiliation(s)
- Roberta Magliozzi
- Department of Cellular and Developmental Biology, University La Sapienza, Rome, Italy
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Jin LH, Kim DW, Eum WS, Yoon CS, Jang SH, Choi HS, Choi SH, Kim YH, Kim SY, Jung MR, Kang TC, Won MH, Lee HY, Kang JH, Kwon OS, Cho SW, Lee KS, Park J, Choi SY. Human liver catalase: cloning, expression and characterization of monoclonal antibodies. Mol Cells 2003; 15:381-6. [PMID: 12872997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023] Open
Abstract
We isolated a cDNA encoding liver catalase from a human liver cDNA library. The cDNA had a high degree of sequence similarity to the corresponding enzyme from other sources. It was expressed in E. coli using the pET15b vector. The protein produced was enzymatically active after purification, and its kinetic parameters closely resembled those of other mammalian catalases. Monoclonal antibodies were generated against the purified catalase; six antibodies recognizing different epitopes were obtained, one of which inhibited the enzyme. The cross reactions of the antibodies with brain catalases from human and other mammalian tissues were investigated, and all the immunoreactive bands obtained on Western blots had molecular masses of about 58 kDa. Similarly fractionated extracts of several mammalian cell lines all gave a single band of molecular mass 58 kDa. These results indicate that mammalian livers and human cell lines contain only one major type of immunologically reactive catalase, even though some of catalases have been previously reported to differ in certain properties.
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Affiliation(s)
- Li Hua Jin
- Division of Life Sciences, Hallym University, Chunchon 200-702, Korea
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Abstract
Traditional strategies for signal transduction in immunosensors are based on piezoelectric, thermometric, electrochemical, magnetic and optical methods. The use of pressure as a signal transduction method in immunosensors has not been reported previously. An immunosensor incorporating the detection of a change in pressure as the signal-transducing mechanism was investigated. A commercially available ultra-low pressure sensor was used in conjunction with a sealed chamber to assess the feasibility of this strategy. A key feature of the current approach is the use of a thin membrane (or film) in which to perform an immunoassay and subsequently to detect production of gas. The thinness contributes to efficient gas evolution and minimizes the effect of liquid acting as a "sink" for gas molecules. This feature also simplifies measurement of evolved gas, which traditionally was based on the use of bulk solutions, shaking and pH changes to "release" dissolved gas (especially carbon dioxide). Gas generation in the current approach is achieved by the coupling of catalase to haptens or antibodies for use in competitive or sandwich immunoassays, respectively. Hydrogen peroxide is used as the substrate. Performance characteristics of the sensor apparatus were assessed in several ways. Injection of various volumes of air from a gas-tight syringe produced an essentially linear relationship from 0.2 to 2.0 microl of injected volume, with a slope of approximately 5 V/microl. Depending on the duration of the sampling period, specific signals in excess of 2 V have been obtained for 0.01 units of catalase (approximately 0.4 ng of protein). Development and use of this sensing apparatus will be described for both competitive and sandwich immunoassays.
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Affiliation(s)
- Theodore T Sand
- DISAN, Inc., P.O. Box 500948, San Diego, CA 92150-0948, USA.
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