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La Y, Li Z, Ma X, Bao P, Chu M, Guo X, Liang C, Yan P. Age-dependent changes in the expression and localization of LYZL4, LYZL6 and PCNA during testicular development in the Ashidan yak. Anim Biotechnol 2024; 35:2344213. [PMID: 38669244 DOI: 10.1080/10495398.2024.2344213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Lysozyme like 4 (LYZL4), lysozyme like 6 (LYZL6) and proliferating cell nuclear antigen (PCNA) are implicated in the regulation of testicular function, but there was no research reported available on the expression patterns of LYZL4, LYZL6 and PCNA genes at different developmental stages of yak testes. In this study, we used the qRT-PCR, western blotting and immunohistochemistry estimated the LYZL4, LYZL6 and PCNA gene expression and protein lo-calization at different developmental stages of yak testes. The qPCR results showed that the mRNA expression of LYZL4, LYZL6 and PCNA genes significantly increased with age in the testes of yaks. Western blot results showed that the protein abundance of LYZL4, LYZL6 and PCNA in yak testes was significantly higher after puberty than before puberty. Furthermore, the results of immunohistochemistry indicated that LYZL4, LYZL6 and PCNA may be involved in the regulation of spermatogonia proliferation and Leydig cell function in immature testis. In adult yak testes, LYZL4, LYZL6 and PCNA may involve in the development of round spermatids and primary spermatocytes during testicular development. Our results indicated that LYZL4, LYZL6 and PCNA may be involved in the development of Sertoli cells, Leydig cells and gonocytes in yak testes.
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Affiliation(s)
- Yongfu La
- Animal Science Department, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory for Yak Genetics, Breeding, and Reproduction Engineering of Gansu Province, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Zhongbang Li
- Animal Science Department, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory for Yak Genetics, Breeding, and Reproduction Engineering of Gansu Province, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Xiaoming Ma
- Animal Science Department, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory for Yak Genetics, Breeding, and Reproduction Engineering of Gansu Province, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Pengjia Bao
- Animal Science Department, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory for Yak Genetics, Breeding, and Reproduction Engineering of Gansu Province, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Min Chu
- Animal Science Department, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory for Yak Genetics, Breeding, and Reproduction Engineering of Gansu Province, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Xian Guo
- Animal Science Department, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory for Yak Genetics, Breeding, and Reproduction Engineering of Gansu Province, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Chunnian Liang
- Animal Science Department, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory for Yak Genetics, Breeding, and Reproduction Engineering of Gansu Province, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
| | - Ping Yan
- Animal Science Department, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
- Key Laboratory for Yak Genetics, Breeding, and Reproduction Engineering of Gansu Province, Chinese Academy of Agricultural Sciences, Lanzhou, PR China
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Wang B, Shao Y, Wang X, Li C. Identification and functional analysis of Toll-like receptor 2 from razor clam Sinonovacula constricta. Int J Biol Macromol 2024; 265:131029. [PMID: 38518946 DOI: 10.1016/j.ijbiomac.2024.131029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/16/2024] [Accepted: 03/19/2024] [Indexed: 03/24/2024]
Abstract
Toll-like receptor 2 (TLR2) is a member of TLR family that plays important roles in the innate immune system, such as pathogen recognition and inflammation regulation. In this study, the TLR2 homologue was cloned from razor clam Sinonovacula constricta (denoted as ScTLR2) and its immune function was explored. The full-length cDNA of ScTLR2 comprised 2890 nucleotides with a 5'-UTR of 218 bp, an open reading frame of 2169 bp encoding 722 amino acids and a 3'-UTR of 503 bp. The deduced amino acid of ScTLR2 showed similar structure to TLR2 homologue with a conserved signal peptide, four LRR domains, one LRR-TYP domain, one LRR-CT domain, one transmembrane domain and a conserved TIR domain. ScTLR2 mRNA was detected in all examined tissues with the highest expression in the gill. After Vibrio parahaemolyticus challenge, the mRNA expression of ScTLR2 was significantly induced both in gill and haemocytes. The recombinant ScTLR2-LRR protein could bind all tested PAMPs including LPS, PGN and MAN. Bacterial agglutination assay showed that rScTLR2 could agglutinate the six tested bacteria with a calcium dependent manner. More importantly, ScTLR2 silencing by siRNA transfection could significantly depress the mRNA expression of Myd88, NF-κB, Tollip, IRF1, and IRF8. The survival rate of S. constricta was markedly decreased after V. parahaemolyticus challenge under this condition. Our current study demonstrated that ScTLR2 served as a pattern recognition receptor to induce immune response against invasive pathogen.
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Affiliation(s)
- Beibei Wang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China
| | - Yina Shao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China.
| | - Xuelei Wang
- Ningbo Academy of Oceanology and Fishery, Ningbo, Zhejiang, China
| | - Chenghua Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Ningbo University, Ningbo 315211, China.
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Marin E, Kornilov DA, Bukhdruker SS, Aleksenko VA, Manuvera VA, Zinovev EV, Kovalev KV, Shevtsov MB, Talyzina AA, Bobrovsky PA, Kuzmichev PK, Mishin AV, Gushchin IY, Lazarev VN, Borshchevskiy VI. Structural insights into thrombolytic activity of destabilase from medicinal leech. Sci Rep 2023; 13:6641. [PMID: 37095116 PMCID: PMC10126035 DOI: 10.1038/s41598-023-32459-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Accepted: 03/28/2023] [Indexed: 04/26/2023] Open
Abstract
Destabilase from the medical leech Hirudo medicinalis belongs to the family of i-type lysozymes. It has two different enzymatic activities: microbial cell walls destruction (muramidase activity), and dissolution of the stabilized fibrin (isopeptidase activity). Both activities are known to be inhibited by sodium chloride at near physiological concentrations, but the structural basis remains unknown. Here we present two crystal structures of destabilase, including a 1.1 Å-resolution structure in complex with sodium ion. Our structures reveal the location of sodium ion between Glu34/Asp46 residues, which were previously recognized as a glycosidase active site. While sodium coordination with these amino acids may explain inhibition of the muramidase activity, its influence on previously suggested Ser49/Lys58 isopeptidase activity dyad is unclear. We revise the Ser49/Lys58 hypothesis and compare sequences of i-type lysozymes with confirmed destabilase activity. We suggest that the general base for the isopeptidase activity is His112 rather than Lys58. pKa calculations of these amino acids, assessed through the 1 μs molecular dynamics simulation, confirm the hypothesis. Our findings highlight the ambiguity of destabilase catalytic residues identification and build foundations for further research of structure-activity relationship of isopeptidase activity as well as structure-based protein design for potential anticoagulant drug development.
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Affiliation(s)
- Egor Marin
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen, The Netherlands
| | | | | | | | - Valentin A Manuvera
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Egor V Zinovev
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | | | | | - Anna A Talyzina
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Department of Molecular Biosciences, Northwestern University, Evanston, IL, USA
| | - Pavel A Bobrovsky
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | | | - Alexey V Mishin
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Ivan Y Gushchin
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
| | - Vassili N Lazarev
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia
- Lopukhin Federal Research and Clinical Center of Physical-Chemical Medicine of Federal Medical Biological Agency, Moscow, Russia
| | - Valentin I Borshchevskiy
- Moscow Institute of Physics and Technology, Dolgoprudny, Russia.
- Joint Institute for Nuclear Research, Dubna, Russia.
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Alesci A, Capillo G, Fumia A, Albano M, Messina E, Spanò N, Pergolizzi S, Lauriano ER. Coelomocytes of the Oligochaeta earthworm Lumbricus terrestris (Linnaeus, 1758) as evolutionary key of defense: a morphological study. ZOOLOGICAL LETTERS 2023; 9:5. [PMID: 36871038 PMCID: PMC9985225 DOI: 10.1186/s40851-023-00203-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
Metazoans have several mechanisms of internal defense for their survival. The internal defense system evolved alongside the organisms. Annelidae have circulating coelomocytes that perform functions comparable to the phagocytic immune cells of vertebrates. Several studies have shown that these cells are involved in phagocytosis, opsonization, and pathogen recognition processes. Like vertebrate macrophages, these circulating cells that permeate organs from the coelomic cavity capture or encapsulate pathogens, reactive oxygen species (ROS), and nitric oxide (NO). Furthermore, they produce a range of bioactive proteins involved in immune response and perform detoxification functions through their lysosomal system. Coelomocytes can also participate in lithic reactions against target cells and the release of antimicrobial peptides. Our study immunohistochemically identify coelomocytes of Lumbricus terrestris scattered in the epidermal and the connective layer below, both in the longitudinal and in the smooth muscle layer, immunoreactive for TLR2, CD14 and α-Tubulin for the first time. TLR2 and CD14 are not fully colocalized with each other, suggesting that these coelomocytes may belong to two distinct families. The expression of these immune molecules on Annelidae coelomocytes confirms their crucial role in the internal defense system of these Oligochaeta protostomes, suggesting a phylogenetic conservation of these receptors. These data could provide further insights into the understanding of the internal defense system of the Annelida and of the complex mechanisms of the immune system in vertebrates.
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Affiliation(s)
- Alessio Alesci
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy.
| | - Gioele Capillo
- Department of Veterinary Sciences, University of Messina, 98168, Messina, Italy
- Institute of Marine Biological Resources and Biotechnology, National Research Council (IRBIM, CNR), 98164, Messina, Italy
| | - Angelo Fumia
- Department of Clinical and Experimental Medicine, University of Messina, Padiglione C, A. O. U. Policlinico "G. Martino", 98124, Messina, Italy
| | - Marco Albano
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy
| | - Emmanuele Messina
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy
| | - Nunziacarla Spanò
- Institute of Marine Biological Resources and Biotechnology, National Research Council (IRBIM, CNR), 98164, Messina, Italy
- Department of Biomedical, Dental and Morphological and Functional Imaging, University of Messina, 98125, Messina, Italy
| | - Simona Pergolizzi
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy
| | - Eugenia Rita Lauriano
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, 98166, Messina, Italy
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Swartzwelter BJ, Mayall C, Alijagic A, Barbero F, Ferrari E, Hernadi S, Michelini S, Navarro Pacheco NI, Prinelli A, Swart E, Auguste M. Cross-Species Comparisons of Nanoparticle Interactions with Innate Immune Systems: A Methodological Review. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1528. [PMID: 34207693 PMCID: PMC8230276 DOI: 10.3390/nano11061528] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 06/04/2021] [Accepted: 06/07/2021] [Indexed: 12/18/2022]
Abstract
Many components of the innate immune system are evolutionarily conserved and shared across many living organisms, from plants and invertebrates to humans. Therefore, these shared features can allow the comparative study of potentially dangerous substances, such as engineered nanoparticles (NPs). However, differences of methodology and procedure between diverse species and models make comparison of innate immune responses to NPs between organisms difficult in many cases. To this aim, this review provides an overview of suitable methods and assays that can be used to measure NP immune interactions across species in a multidisciplinary approach. The first part of this review describes the main innate immune defense characteristics of the selected models that can be associated to NPs exposure. In the second part, the different modes of exposure to NPs across models (considering isolated cells or whole organisms) and the main endpoints measured are discussed. In this synergistic perspective, we provide an overview of the current state of important cross-disciplinary immunological models to study NP-immune interactions and identify future research needs. As such, this paper could be used as a methodological reference point for future nano-immunosafety studies.
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Affiliation(s)
| | - Craig Mayall
- Department of Biology, Biotechnical Faculty, University of Liubljana, 1000 Ljubljana, Slovenia;
| | - Andi Alijagic
- Institute for Biomedical Research and Innovation, National Research Council, 90146 Palermo, Italy;
| | - Francesco Barbero
- Institut Català de Nanosciència i Nanotecnologia (ICN2), Bellaterra, 08193 Barcelona, Spain;
| | - Eleonora Ferrari
- Center for Plant Molecular Biology–ZMBP Eberhard-Karls University Tübingen, 72076 Tübingen, Germany;
| | - Szabolcs Hernadi
- School of Biosciences, Cardiff University, Cardiff CF10 3AX, UK;
| | - Sara Michelini
- Department of Biosciences, Paris-Lodron University Salzburg, 5020 Salzburg, Austria;
| | | | | | - Elmer Swart
- UK Centre for Ecology and Hydrology, Wallingford OX10 8BB, UK;
| | - Manon Auguste
- Department of Earth Environment and Life Sciences, University of Genova, 16126 Genova, Italy
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Gudeta K, Julka J, Kumar A, Bhagat A, Kumari A. Vermiwash: An agent of disease and pest control in soil, a review. Heliyon 2021; 7:e06434. [PMID: 33732941 PMCID: PMC7944038 DOI: 10.1016/j.heliyon.2021.e06434] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/11/2021] [Accepted: 03/02/2021] [Indexed: 12/17/2022] Open
Abstract
Vermiwash is a liquid extract produced from vermicompost in a medium where earthworms are richly populated. It comprises a massive decomposer bacteria count, mucus, vitamins, different bioavailable minerals, hormones, enzymes, different antimicrobial peptides, etc. This paper aimed to assess how these natural products in vermiwash suppressed the pathogen and pests. Thus, we have reviewed the importance of vermiwash/vermicompost in disease control, the mechanism of disease suppression, the components of vermiwash applied in disease suppression, and pest control to use the scientific facts in agriculture to enhance the productivity of the crops. The bioactive macromolecules from the skin secretion of earthworm, coelomic fluid, and mucus directly able to defend pathogenic soil microbes against the worm and thereby freed the environment from the disease. Earthworms establish symbiotic relations with microbes, produce an essential product that supports the growth of plants, and suppress plant's root disease. It is recomended that earthworm should be inoculated in an agricultural field, or prepare and apply its vermiwash/vermicompost as a spray or as additive bio-fertilizer in the soil to enhance the productivities of the crops.
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Affiliation(s)
- Kasahun Gudeta
- Adama Science and Technology University, Department of Biology, P.O. Box 1888, Adama, Ethiopia
- Shoolini University Biotechnology and Management Sciences, School of Biological and Environmental Sciences, Solan 173212, Himachal Pradesh, India
| | - J.M. Julka
- Shoolini University Biotechnology and Management Sciences, School of Biological and Environmental Sciences, Solan 173212, Himachal Pradesh, India
| | - Arun Kumar
- Shoolini University Biotechnology and Management Sciences, School of Biotechnology, Solan 173212, Himachal Pradesh, India
| | - Ankeet Bhagat
- Department of Zoology, Guru Nanak Dev University, Amritsar, Punjab, 143005, India
| | - Amita Kumari
- Shoolini University Biotechnology and Management Sciences, School of Biological and Environmental Sciences, Solan 173212, Himachal Pradesh, India
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Amynthas corticis genome reveals molecular mechanisms behind global distribution. Commun Biol 2021; 4:135. [PMID: 33514865 PMCID: PMC7846840 DOI: 10.1038/s42003-021-01659-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 01/05/2021] [Indexed: 01/30/2023] Open
Abstract
Earthworms (Annelida: Crassiclitellata) are widely distributed around the world due to their ancient origination as well as adaptation and invasion after introduction into new habitats over the past few centuries. Herein, we report a 1.2 Gb complete genome assembly of the earthworm Amynthas corticis based on a strategy combining third-generation long-read sequencing and Hi-C mapping. A total of 29,256 protein-coding genes are annotated in this genome. Analysis of resequencing data indicates that this earthworm is a triploid species. Furthermore, gene family evolution analysis shows that comprehensive expansion of gene families in the Amynthas corticis genome has produced more defensive functions compared with other species in Annelida. Quantitative proteomic iTRAQ analysis shows that expression of 147 proteins changed in the body of Amynthas corticis and 16 S rDNA sequencing shows that abundance of 28 microorganisms changed in the gut of Amynthas corticis when the earthworm was incubated with pathogenic Escherichia coli O157:H7. Our genome assembly provides abundant and valuable resources for the earthworm research community, serving as a first step toward uncovering the mysteries of this species, and may provide molecular level indicators of its powerful defensive functions, adaptation to complex environments and invasion ability.
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Hussain M, Liaqat I, Hanif U, Sultan A, Ara C, Aftab N, Urooj, Butt A. Medicinal Perspective of Antibacterial Bioactive Agents in Earthworms (Clitellata, Annelida): A Comprehensive Review. J Oleo Sci 2021; 71:563-573. [DOI: 10.5650/jos.ess21379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Mudassar Hussain
- Microbiology Lab, Department of Zoology, Government College University Lahore
| | - Iram Liaqat
- Microbiology Lab, Department of Zoology, Government College University Lahore
| | - Uzma Hanif
- Department of Botany, Government College University Lahore
| | | | - Chaman Ara
- Department of Zoology, University of the Punjab
| | - Nauman Aftab
- Institute of Industrial Biotechnology, GC University
| | - Urooj
- Department of Zoology, University of the Punjab
| | - Abida Butt
- Superior College Daska, Department of Zoology, Government College University
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Bidirectional regulation of i-type lysozyme on cutaneous wound healing. Biomed Pharmacother 2020; 131:110700. [PMID: 33152906 DOI: 10.1016/j.biopha.2020.110700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/21/2020] [Accepted: 08/26/2020] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE This study aimed to assess the effect and mechanism of i-type lysozyme on cutaneous wound healing animal model and Multiple cell models both in vivo and in vitro. METHODS Therefore, to evaluate its regenerative efficacy on wound healing process, we daily applied i-type lysozyme on murine full-thickness excisional wounds. After sacrifice on indicated days, skin tissues around surgical defects were harvested and assessed for re-epithelialization, granulation tissue formation, neovascularization and remodeling. To elucidate the underlying mechanisms, i-type lysozyme was analyzed for its tissue regenerative potency on the proliferation, invasion, migration and tube formation against keratinocytes, fibroblasts and endothelial cells. Antioxidant and antimicrobial experiments were also conducted to elucidate protective ability of i-type lysozyme to wound bed. RESULTS It displayed excellent bi-directional regulation in wound repair, with significant acceleration of epidermal and dermal regeneration as well as the efficient attenuation of excessive collagen deposition and fibrosis in the surgical lesion. I-type lysozyme treatment augmented the proliferation and migration of HaCaT, NIH 3T3 and HUVECs, enhanced the invasion of HaCaT and HUVECs as well as accelerated tube formation of HUVECs. Additionally, it significantly recovered the proliferation of H2O2-damaged cells, whereas represented no microbicidal effect under effective concentration of wound healing. CONCLUSION Our findings demonstrate the bi-directional regulation of i-type lysozyme in wound healing process through promoting tissue regeneration while hampering scar formation, implying that it is a promising therapeutic agent for wound repair.
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Roubalová R, Procházková P, Hanč A, Dvořák J, Bilej M. Mutual interactions of E. andrei earthworm and pathogens during the process of vermicomposting. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:33429-33437. [PMID: 30840250 DOI: 10.1007/s11356-019-04329-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 01/22/2019] [Indexed: 06/09/2023]
Abstract
Vermicomposting is a process by which earthworms together with microorganisms degrade organic wastes into a humus-like material called vermicompost. This process does not include a thermophilic stage, and therefore, the possible presence of pathogens represents a potential health hazard. To elucidate the effect of earthworms in the selective reduction of pathogens, grape marc substrate was artificially inoculated with Escherichia coli, Enterococcus spp., thermotolerant coliform bacteria (TCB), and Salmonella spp., and their reduction during vermicomposting was monitored. Various defense mechanisms eliminating microorganisms in the earthworm gut were assumed to be involved in the process of pathogen reduction. Therefore, we followed the expression of three pattern recognition receptors (coelomic cytolytic factor (CCF), lipopolysaccharide-binding protein (LBP), and Toll-like receptor (v-TLR)), two antimicrobial molecules (fetidin/lysenins and lysozyme), and heat shock protein HSP70. We detected the significant decrease of some defense molecules (fetidin/lysenins and LBP) in all pathogen-inoculated substrates, and the increase of CCF and LBP in the Salmonella spp.-inoculated substrate. At the same time, the reduction of pathogens during vermicomposting was assessed. We observed the accelerated reduction of E. coli, Enterococcus spp., and TCB in pathogen-inoculated substrates with earthworms compared to that without earthworms. Moreover, the differences between the microbiome of grape marc substrate and earthworm intestines were determined by high throughput sequencing. This analysis revealed that the bacterial composition of grape marc substrate differed from the composition of the content of earthworm intestines, suggesting the elimination of specific bacterial species during food passage through the gut.
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Affiliation(s)
- Radka Roubalová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20, Prague 4, Czech Republic.
| | - Petra Procházková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20, Prague 4, Czech Republic
| | - Aleš Hanč
- Czech University of Life Sciences Prague, Kamýcká 129, CZ-165 00, Prague 6, Czech Republic
| | - Jiří Dvořák
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20, Prague 4, Czech Republic
| | - Martin Bilej
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20, Prague 4, Czech Republic
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11
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Swart E, Dvorak J, Hernádi S, Goodall T, Kille P, Spurgeon D, Svendsen C, Prochazkova P. The Effects of In Vivo Exposure to Copper Oxide Nanoparticles on the Gut Microbiome, Host Immunity, and Susceptibility to a Bacterial Infection in Earthworms. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E1337. [PMID: 32659907 PMCID: PMC7408611 DOI: 10.3390/nano10071337] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/03/2020] [Accepted: 07/06/2020] [Indexed: 02/06/2023]
Abstract
Nanomaterials (NMs) can interact with the innate immunity of organisms. It remains, however, unclear whether these interactions can compromise the immune functioning of the host when faced with a disease threat. Co-exposure with pathogens is thus a powerful approach to assess the immuno-safety of NMs. In this paper, we studied the impacts of in vivo exposure to a biocidal NM on the gut microbiome, host immune responses, and susceptibility of the host to a bacterial challenge in an earthworm. Eisenia fetida were exposed to CuO-nanoparticles in soil for 28 days, after which the earthworms were challenged with the soil bacterium Bacillus subtilis. Immune responses were monitored by measuring mRNA levels of known earthworm immune genes. Effects of treatments on the gut microbiome were also assessed to link microbiome changes to immune responses. Treatments caused a shift in the earthworm gut microbiome. Despite these effects, no impacts of treatment on the expression of earthworm immune markers were recorded. The methodological approach applied in this paper provides a useful framework for improved assessment of immuno-safety of NMs. In addition, we highlight the need to investigate time as a factor in earthworm immune responses to NM exposure.
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Affiliation(s)
- Elmer Swart
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford OX10 8BB, UK; (T.G.); (D.S.)
| | - Jiri Dvorak
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech Republic; (J.D.); (P.P.)
| | - Szabolcs Hernádi
- School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK; (S.H.); (P.K.)
| | - Tim Goodall
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford OX10 8BB, UK; (T.G.); (D.S.)
| | - Peter Kille
- School of Biosciences, Cardiff University, Sir Martin Evans Building, Museum Avenue, Cardiff CF10 3AX, UK; (S.H.); (P.K.)
| | - David Spurgeon
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford OX10 8BB, UK; (T.G.); (D.S.)
| | - Claus Svendsen
- UK Centre for Ecology and Hydrology, Maclean Building, Benson Lane, Wallingford OX10 8BB, UK; (T.G.); (D.S.)
| | - Petra Prochazkova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Videnska 1083, 142 20 Prague 4, Czech Republic; (J.D.); (P.P.)
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12
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Prochazkova P, Roubalova R, Dvorak J, Navarro Pacheco NI, Bilej M. Pattern recognition receptors in annelids. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 102:103493. [PMID: 31499098 DOI: 10.1016/j.dci.2019.103493] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 09/04/2019] [Accepted: 09/06/2019] [Indexed: 06/10/2023]
Abstract
The existence of pattern recognition receptors (PRRs) on immune cells was discussed in 1989 by Charles Janeway, Jr., who proposed a general concept of the ability of PRRs to recognize and bind conserved molecular structures of microorganisms known as pathogen-associated molecular patterns (PAMPs). Upon PAMP engagement, PRRs trigger intracellular signaling cascades resulting in the expression of various proinflammatory molecules. These recognition molecules represent an important and efficient innate immunity tool of all organisms. As invertebrates lack the instruments of the adaptive immune system, based on "true" lymphocytes and functional antibodies, the importance of PRRs are even more fundamental. In the present review, the structure, specificity, and expression profiles of PRRs characterized in annelids are discussed, and their role in innate defense is suggested.
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Affiliation(s)
- P Prochazkova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, v. v. i., Prague, Czech Republic.
| | - R Roubalova
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, v. v. i., Prague, Czech Republic
| | - J Dvorak
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, v. v. i., Prague, Czech Republic
| | - N I Navarro Pacheco
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, v. v. i., Prague, Czech Republic
| | - M Bilej
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, v. v. i., Prague, Czech Republic
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13
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Abstract
The coelomic cavity is part of the main body plan of annelids. This fluid filled space takes up a considerable volume of the body and serves as an important site of exchange of both metabolites and proteins. In addition to low molecular substances such as amino acids and glucose and lactate, the coelomic fluid contains different proteins that can arise through release from adjacent tissues (intestine) or from secretion by coelomic cells. In this chapter, we will review the current knowledge about the proteins in the annelid coelomic fluid. Given the number of more than 20,000 extant annelid species, existing studies are confined to a relatively few species. Most studies on the oligochaetes are confined to the earthworms-clearly because of their important role in soil biology. In the polychaetes (which might represent a paraphyletic group) on the other hand, studies have focused on a few species of the Nereidid family. The proteins present in the coelomic fluid serve different functions and these have been studied in different taxonomic groups. In oligochaetes, proteins involved antibacterial defense such as lysenin and fetidin have received much attention in past and ongoing studies. In polychaetes, in contrast, proteins involved in vitellogenesis and reproduction, and the vitellogenic function of coelomic cells have been investigated in more detail. The metal binding metallothioneins as well as antimicrobial peptides, have been investigated in both oligochaetes and polychaetes. In the light of the literature available, this review will focus on lipoproteins, especially vitellogenin, and proteins involved in defense reactions. Other annelid groups such as the Pogonophora, Echiura, and Sipuncula (now considered polychaetes), have not received much attention and therefore, this overview is far from being complete.
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Abstract
The distribution of all peptidase homologues across all phyla of organisms was analysed to determine within which kingdom each of the 271 families originated. No family was found to be ubiquitous and even peptidases thought to be essential for life, such as signal peptidase and methionyl aminopeptides are missing from some clades. There are 33 peptidase families common to archaea, bacteria and eukaryotes and are assumed to have originated in the last universal common ancestor (LUCA). These include peptidases with different catalytic types, exo- and endopeptidases, peptidases with different tertiary structures and peptidases from different families but with similar structures. This implies that the different catalytic types and structures pre-date LUCA. Other families have had their origins in the ancestors of viruses, archaea, bacteria, fungi, plants and animals, and a number of families have had their origins in the ancestors of particular phyla. The evolution of peptidases is compared to recent hypotheses about the evolution of organisms. Sequences of proteolytic enzymes can be clustered into 271 families. No family is present in all organisms. Only 33 families are predicted to originate in the last universal common ancestor. Different structures and activities predate the last universal common ancestor. Other families have originated in organism kingdoms, phyla or even families.
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Affiliation(s)
- Neil D Rawlings
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridgeshire, CB10 1SD, UK.
| | - Alex Bateman
- European Molecular Biology Laboratory, European Bioinformatics Institute, Wellcome Genome Campus, Hinxton, Cambridgeshire, CB10 1SD, UK
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15
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Yang Y, Sun Y, Zhang N, Li J, Zhang C, Duan X, Ding Y, Zhao R, Zheng Z, Geng D, Sun Y. The up-regulation of two identified wound healing specific proteins-HSP70 and lysozyme in regenerated Eisenia fetida through transcriptome analysis. JOURNAL OF ETHNOPHARMACOLOGY 2019; 237:64-73. [PMID: 30902745 PMCID: PMC7126112 DOI: 10.1016/j.jep.2019.03.047] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 03/12/2019] [Accepted: 03/17/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Disposed earthworm has been used to treat various common ailments including burns, arthritis, itching, and inflammation for thousands of years in China. As their remarkable ability to fully regenerate in a scar-free manner, regenerated tissue homogenate of amputated Eisenia fetida (E. fetida) have been considered as an excellent wound repair therapy in our previous study. We have demonstrated that regenerated earthworm (G-90') can perform higher wound repair ability to non-regeneration tissue (G-90) through significant promotion of cutaneous wound repair in mice after their administration into wound beds. OBJECTIVE In the present study, we aimed to reveal the mechanism of G-90' and to explore a potential wound healing accelerated strategy. METHODS AND RESULTS Two functional proteins- HSP70 and lysozyme in G-90' were confirmed by cross-identification of LC-MS/MS and transcriptome analyses. Followed with semi-quantitative PCR and western blot, their expression were validated to up-regulate in 3-day regenerated tissues (G-90'). CONCLUSION This study implies the therapeutic potency of G-90' for wound recovery and provides a new strategy to assess other natural materials targeting wound healing with the tail-amputated E .fetida as a model organism.
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Affiliation(s)
- Yuwei Yang
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Yujie Sun
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Na Zhang
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Jianhao Li
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Chenning Zhang
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Xiaojie Duan
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Yuting Ding
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Renyun Zhao
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Zhuhong Zheng
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China
| | - Di Geng
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China.
| | - Yikun Sun
- School of Chinese Material Medica, Beijing University of Chinese Medicine, Yangguang South Road, Fangshan District, Beijing, China.
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16
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Identification and expression pattern of a new digestive invertebrate-type lysozyme from the earthworm. Genes Genomics 2019; 41:367-371. [DOI: 10.1007/s13258-018-0776-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 12/10/2018] [Indexed: 01/01/2023]
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17
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Bodó K, Boros Á, Rumpler É, Molnár L, Böröcz K, Németh P, Engelmann P. Identification of novel lumbricin homologues in Eisenia andrei earthworms. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 90:41-46. [PMID: 30179632 DOI: 10.1016/j.dci.2018.09.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 08/30/2018] [Accepted: 09/01/2018] [Indexed: 05/17/2023]
Abstract
Lumbricin and its orthologue antimicrobial peptides were typically isolated from annelids. In this report, mRNA for lumbricin and -serendipitously- a novel lumbricin-related mRNA sequence were identified in Eisenia andrei earthworms. The determined mRNA sequences of E. andrei lumbricin and lumbricin-related peptide consist of 477 and 575 nucleotides. The precursors of proline-rich E. andrei lumbricin and the related peptide contain 63 and 59 amino acids, respectively. Phylogenetic analysis indicated close relationship with other annelid lumbricins. Highest expression of both mRNAs appeared in the proximal part of the intestine (pharynx, gizzard), while other tested organs had moderate (body wall, midgut, ovary, metanephridium, seminal vesicles, ventral nerve cord) or low (coelomocytes) levels. During ontogenesis their expression revealed continuous increase in embryos. Following 48 h of in vivo Gram-positive bacteria challenge both mRNAs were significantly elevated in coelomocytes, while Gram-negative bacteria or zymosan stimulation had no detectable effects.
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Affiliation(s)
- Kornélia Bodó
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, Hungary
| | - Ákos Boros
- Regional Laboratory of Virology, ANTSZ, Baranya County Institute of State Public Health Service, Pécs, Hungary
| | - Éva Rumpler
- Department of Comparative Anatomy and Developmental Biology, Faculty of Sciences, University of Pécs, Hungary
| | - László Molnár
- Department of Comparative Anatomy and Developmental Biology, Faculty of Sciences, University of Pécs, Hungary
| | - Katalin Böröcz
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, Hungary
| | - Péter Németh
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, Hungary
| | - Péter Engelmann
- Department of Immunology and Biotechnology, Clinical Center, Medical School, University of Pécs, Hungary.
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18
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Lu Z, Shi P, You H, Liu Y, Chen S. Transcriptomic analysis of the salivary gland of medicinal leech Hirudo nipponia. PLoS One 2018; 13:e0205875. [PMID: 30339694 PMCID: PMC6195274 DOI: 10.1371/journal.pone.0205875] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 10/03/2018] [Indexed: 12/31/2022] Open
Abstract
Hirudo nipponia (known as Shui Zhi in Chinese) is a well-known Chinese medicine with numerous active ingredients in its body, especially in its saliva. This native Chinese blood-sucking leech has been used for therapeutic purposes since before 100 AD. Modern Chinese physicians use it for a wide range of diseases. Genomic data and molecular information about the pharmacologically active substances produced by this medicinal leech are presently unavailable despite this organism’s medicinal importance. In this study, we performed transcriptome profiling of the salivary glands of medicinal leech H. nipponia using the Illumina platform. In total, 84,657,362 clean reads were assembled into 50,535 unigenes. The obtained unigenes were compared to public databases. Furthermore, a unigene sequence similarity search and comparisons with the whole transcriptome of medical leech were performed to identify potential proteins. Finally, more than 21 genes were predicted to be involved in anticoagulatory, antithrombotic, antibacterial, anti-inflammatory and antitumor processes, which might play important roles in the treatment of various diseases. This study is the first analysis of a sialotranscriptome in H. nipponia. The transcriptome profile will shed light on its genetic background and provide a useful tool to deepen our understanding of the medical value of H. nipponia.
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Affiliation(s)
- Zenghui Lu
- Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Sub-center of National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Science, Chongqing, China
- Chongqing Key Laboratory of Chinese Medicine Resources, Chongqing, China
| | - Ping Shi
- Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Sub-center of National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Science, Chongqing, China
| | - Huajian You
- Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Key Laboratory of Chinese Medicine Resources, Chongqing, China
| | - Yanqi Liu
- Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Key Laboratory of Chinese Medicine Resources, Chongqing, China
| | - Shijiang Chen
- Chongqing Academy of Chinese Materia Medica, Chongqing, China
- Chongqing Sub-center of National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Science, Chongqing, China
- Chongqing Key Laboratory of Chinese Medicine Resources, Chongqing, China
- * E-mail:
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Liu Y, Zhang YH, Li T, Cao XT, Zhou Y, Yuan JF, Gu ZM, Lan JF. PcLys-i3, an invertebrate lysozyme, is involved in the antibacterial immunity of the red swamp crayfish, Procambarus clarkii. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 87:109-115. [PMID: 29909090 DOI: 10.1016/j.dci.2018.05.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 05/29/2018] [Accepted: 05/30/2018] [Indexed: 06/08/2023]
Abstract
Antimicrobial peptides (AMPs) play important roles in innate immunity against pathogens and lysozymes are a particularly type of AMP. Lysozymes are hydrolytic enzymes that are characterized by their ability to cleave the beta-(1,4)-glycosidic bond between N-acetylmuramic acid and N-acetylglucosamine in peptidoglycan, which is the major bacterial cell wall polymer. In this work, a lysozyme was identified from Procambarus clarkii and designated PcLys-i3. Quantitative RT-PCR was used to analyze the tissue distribution and expression profiles of PcLys-i3. PcLys-i3 was present in all tested tissues and had high expression levels in gills, stomach and intestine. The expression levels of PcLys-i3 were up-regulated in gills and intestine after challenge with Vibrio parahaemolyticus, Staphylococcus aureus and Aeromonas hydrophila. PcLys-i3 and PcFer proteins can enhance the bacterial elimination in crayfish, whereas the bacterial elimination was weakened when the expression level of PcLys-i3 or PcFer RNAs was suppressed by RNAi. Recombinant PcLys-i3 and PcFer significantly reduced the mortality of crayfish with bacterial infections. Further study found that PcLys-i3 could interact with PcFer in vitro. Finally, the PcLys-i3 and PcFer proteins could bind to bacteria and inhibit bacterial replication. These results suggest that both PcLys-i3 and PcFer play important roles in the antibacterial immunity of red swamp crayfish.
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Affiliation(s)
- Yan Liu
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Ying-Hao Zhang
- College of Science, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Tong Li
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Xiao-Tong Cao
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yang Zhou
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Jun-Fa Yuan
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Ze-Mao Gu
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Jiang-Feng Lan
- Department of Aquatic Animal Medicine, Research Center for Marine Biology, Hubei Engineering Technology Research Center for Aquatic Animal Diseases Control and Prevention, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
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20
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Wang X, Li X, Sun Z. iTRAQ-based quantitative proteomic analysis of the earthworm Eisenia fetida response to Escherichia coli O157:H7. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 160:60-66. [PMID: 29793202 DOI: 10.1016/j.ecoenv.2018.05.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 04/30/2018] [Accepted: 05/03/2018] [Indexed: 06/08/2023]
Abstract
Soil environment contaminated by Escherichia coli O157:H7 which come from the waste of infected animals. Earthworms can live in the pathogens-polluted soil by their innate immunity. How the proteins of earthworms E. fetida will response to E. coli O157:H7-contaminated-soil still unclear? To identify the defense proteins under E. coli O157:H7 stress, we performed a proteomic analysis of earthworm under E. coli O157:H7 exposure through an iTRAQ technology. In total, we found 283 non-redundant proteins, including fibrinolytic protease 1, lombricine kinase, lysozyme, gelsolin, coelomic cytolytic factor-1, antimicrobial peptide lumbricin-l, lysenin, and et al. The proteins participate in metabolic processes, transcription, defense response to bacterium, translation, response to stress, and transport. The study will contribute to understand why earthworm can live in the pathogens-polluted environment.
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Affiliation(s)
- Xing Wang
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China.
| | - Xiaoqin Li
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China; Beijing Key Laboratory of Biodiversity and Organic Farming, China Agricultural University, Beijing 100193, China
| | - Zhenjun Sun
- College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
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21
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Roubalová R, Dvořák J, Procházková P, Škanta F, Navarro Pacheco NI, Semerád J, Cajthaml T, Bilej M. The role of CuZn- and Mn-superoxide dismutases in earthworm Eisenia andrei kept in two distinct field-contaminated soils. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 159:363-371. [PMID: 29778984 DOI: 10.1016/j.ecoenv.2018.04.056] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2018] [Revised: 04/20/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
Polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs), together with polycyclic aromatic hydrocarbons (PAHs), represent highly toxic and persistent organic environmental pollutants, especially due to their capability for bioaccumulation in fatty tissues. To observe the environmentally relevant effect of these compounds on earthworms, two soils naturally contaminated with PCDD/Fs and PAHs were used in our experiments. We focused on the role of CuZn- and Mn-superoxide dismutases. We assembled a full-length sequences of these molecules from Eisenia andrei earthworm and confirmed their activity. We demonstrated the significant reduction of CuZn-SOD on both mRNA and enzyme activity levels and increased levels of reactive oxygen species in earthworms kept in PCDD/F-polluted soil, which corresponds to the observed histopathologies of the earthworm intestinal wall and adjacent chloragogenous tissue. The results show an important role of CuZn-SOD in earthworm tissue damage caused by PCDD/Fs present in soil. We did not detect any significant changes in the mRNA expression or activity of Mn-SOD in these earthworms. In earthworms maintained in PAH-polluted soil the activity of both CuZn-SOD and Mn-SOD significantly increased. No histopathological changes were detected in these worms, however significant decrease of coelomocyte viability was observed. This reduced viability was most likely independent of oxidative stress.
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Affiliation(s)
- Radka Roubalová
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic.
| | - Jiří Dvořák
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic.
| | - Petra Procházková
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic.
| | - František Škanta
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic.
| | | | - Jaroslav Semerád
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic; Institute for Environmental Studies, Faculty of Science, Charles University, Benátská 2, CZ-128 01 Prague 2, Czech Republic.
| | - Tomáš Cajthaml
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic.
| | - Martin Bilej
- Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, CZ-142 20 Prague 4, Czech Republic.
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22
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Procházková P, Hanč A, Dvořák J, Roubalová R, Drešlová M, Částková T, Šustr V, Škanta F, Pacheco NIN, Bilej M. Contribution of Eisenia andrei earthworms in pathogen reduction during vermicomposting. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:26267-26278. [PMID: 29978314 DOI: 10.1007/s11356-018-2662-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 06/26/2018] [Indexed: 06/08/2023]
Abstract
Vermicomposting is a process of degradation of biowaste which involves complex interactions between earthworms and microorganisms. This process lacks a thermophilic stage and thus, the possible presence of pathogens poses a potential health hazard. To assess the contribution of earthworms during the selective reduction of various pathogens, apple pomace substrate was artificially inoculated with Escherichia coli, Salmonella spp., thermotolerant coliform bacteria, and Enterococci. The artificial bacterial load did not influence the weight, reproduction, or intestinal enzymatic activity of the earthworms, but it caused reversible histological changes to the epithelial layer and chloragogen tissue of their intestines. The reduction of pathogenic Enterococci and E. coli from the substrate was accelerated by earthworms (63-fold, 77-fold, and 840-fold for Enterococci and 6-fold, 36-fold, and 7-fold for E. coli inoculated substrates after 2, 4, and 6 weeks, respectively). Moreover, the rapid elimination of Salmonella spp. was supported by the upregulated expression of two pattern recognition receptors which bind lipopolysaccharide, coelomic cytolytic factor, and lipopolysaccharide-binding protein. Further, the microbiomes of the intestine and the composting substrate differed significantly. Graphical abstract.
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Affiliation(s)
- Petra Procházková
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20, Prague 4, Czech Republic.
| | - Aleš Hanč
- Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague 6, Czech Republic
| | - Jiří Dvořák
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Radka Roubalová
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Markéta Drešlová
- Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague 6, Czech Republic
| | - Tereza Částková
- Department of Agro-Environmental Chemistry and Plant Nutrition, Czech University of Life Sciences Prague, Kamýcká 129, 165 00, Prague 6, Czech Republic
| | - Vladimír Šustr
- Institute of Soil Biology, Biology Centre of the Czech Academy, Na Sádkách 7, 370 05, České Budějovice, Czech Republic
| | - František Škanta
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Natividad Isabel Navarro Pacheco
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Martin Bilej
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20, Prague 4, Czech Republic
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23
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Oh HY, Kim CH, Go HJ, Park NG. Isolation of an invertebrate-type lysozyme from the nephridia of the echiura, Urechis unicinctus, and its recombinant production and activities. FISH & SHELLFISH IMMUNOLOGY 2018; 79:351-362. [PMID: 29753144 DOI: 10.1016/j.fsi.2018.05.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 05/04/2018] [Accepted: 05/08/2018] [Indexed: 05/26/2023]
Abstract
Invertebrates, unlike vertebrates which have adaptive immune system, rely heavily on the innate immune system for the defense against pathogenic bacteria. Lysozymes, along with other immune effectors, are regarded as an important group in this defense. An invertebrate-type (i-type) lysozyme, designated Urechis unicinctus invertebrate-type lysozyme, Uu-ilys, has been isolated from nephridia of Urechis unicinctus using a series of high performance liquid chromatography (HPLC), and ultrasensitive radial diffusion assay (URDA) as a bioassay system. Analyses of the primary structure and cDNA cloning revealed that Uu-ilys was approximately 14 kDa and composed of 122 amino acids (AAs) of which the precursor had a total of 160 AAs containing a signal peptide of 18 AAs and a pro-sequence of 20 AAs encoded by the nucleotide sequence of 714 bp that comprises a 5' untranslated region (UTR) of 42 bp, an open reading frame (ORF) of 483 bp, and a 3' UTR of 189 bp. Multiple sequence alignment showed Uu-ilys has high homology to i-type lysozymes from several annelids. Relatively high transcriptional expression levels of Uu-ilys was detected in nephridia, anal vesicle, and intestine. The native Uu-ilys exhibited comparable lysozyme enzymatic and antibacterial activities to hen egg white lysozyme. Collectively, these data suggest that Uu-ilys, the isolated antibacterial protein, plays a role in the immune defense mechanism of U. unicinctus. Recombinant Uu-ilys (rUu-ilys) produced in a bacterial expression system showed significantly decreased lysozyme lytic activity from that of the native while its potency on radial diffusion assay detecting antibacterial activity was retained, which may indicate the non-enzymatic antibacterial capacity of Uu-ilys.
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Affiliation(s)
- Hye Young Oh
- Department of Biotechnology, College of Fisheries Sciences, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Chan-Hee Kim
- Department of Biotechnology, College of Fisheries Sciences, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Hye-Jin Go
- Department of Biotechnology, College of Fisheries Sciences, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea
| | - Nam Gyu Park
- Department of Biotechnology, College of Fisheries Sciences, Pukyong National University, 45 Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea.
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Chen F, Wei Z, Zhao X, Shao Y, Zhang W. Molecular characteristics, expression, and antimicrobial activities of i-type lysozyme from the razor clam Sinonovacula constricta. FISH & SHELLFISH IMMUNOLOGY 2018; 79:321-326. [PMID: 29807121 DOI: 10.1016/j.fsi.2018.05.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/18/2018] [Accepted: 05/23/2018] [Indexed: 05/10/2023]
Abstract
Lysozyme is a key component of the innate immune system, which plays a pivotal role in early defense against pathogen infection. In this study, an i-type lysozyme homology was identified from the razor clam Sinonovacula constricta (designated as ScLYZ) through RACE approaches. The full-length cDNA of ScLYZ was 768 bp and encoded a polypeptide of 140 amino acid residues. SMART analysis revealed that ScLYZ processed a signal peptide (1-18 aa) and a destabilase domain from 25 to 133 aa. Two catalytic residues (Glu36 and Asp47) and two specific motifs ["CL(E/L/R/H)C(I/M)C" and "MDVGSLSCG(P/Y) (F/Y)QIK"] of the i-type lysozyme were highly conserved in the ScLYZ sequence. Multiple sequence alignments and phylogenetic analysis indicated that ScLYZ could be a new member of the i-type lysozyme subfamily. Tissue distribution analysis revealed that ScLYZ was constitutively expressed in all examined tissues, and the highest expression was found in the hepatopancreas. After the razor clams were challenged by Vibrio parahaemolyticus, the mRNA levels of ScLYZ increased in the gill and hepatopancreas. Moreover, the recombinant protein was expressed in Escherichia coli, and the refolded ScLYZ showed highly antimicrobial activities against V. parahaemolyticus and Vibrio splendidus. The minimal inhibitory concentration toward V. parahaemolyticus was 8.2 μmol/mL. All our results supported that ScLYZ was involved in the innate immune defense of razor clam by inhibiting the growth of invasive pathogens.
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Affiliation(s)
- Fan Chen
- School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Zhixin Wei
- School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Xuelin Zhao
- School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
| | - Yina Shao
- School of Marine Sciences, Ningbo University, Ningbo 315211, PR China.
| | - Weiwei Zhang
- School of Marine Sciences, Ningbo University, Ningbo 315211, PR China
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Li C, Zhao Y, Liu T, Huang J, Zhang Q, Liu B, Xiao S, Wang H, Liu B, Wang J, Cong L. The distribution and function characterization of the i type lysozyme from Apostichopus japonicus. FISH & SHELLFISH IMMUNOLOGY 2018; 74:419-425. [PMID: 29079205 DOI: 10.1016/j.fsi.2017.10.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 10/18/2017] [Accepted: 10/19/2017] [Indexed: 05/10/2023]
Abstract
Lysozyme is a very important component of the innate immune system and a key molecule that protects against bacterial infection. Sea cucumber i-type lysozyme (Aj-iLys) has been shown to possess multiple functions. In this study, we investigated the function and characterization of Aj-iLys in detail. Spatial distribution analysis showed that Aj-iLys was constitutively expressed in all tested tissues, with dominant expression in the tentacles and respiratory trees. Challenge with the pathogen V. splendidus and LPS stimulation both significantly up-regulated the mRNA expression of Aj-iLys. More importantly, inhibition of Aj-iLys expression by mRNA interference resulted in significant promotion of coelomocyte apoptosis during LPS challenge in vitro. The results indicated that Aj-iLys serves as an important innate immunity factor and plays a key defense role during host-pathogen interactions in sea cucumbers. From the radius of the antimicrobial zone, it was determined that the non-fusion Aj-iLys exerted a remarkable inhibitive effect on tested bacteria in vitro. Functional investigation revealed that Aj-iLys also exhibited isopeptidase activity based on its ability to hydrolyze l-Glutamic acid γ-(4-nitroanilide) in vitro to produce p-NA, which is an analogue of the isopeptide bond. The optimal catalytic conditions for the isopeptidase activity were 37 °C, pH 6.5, and the optimum ionic strength was about 0.050 mol/L.
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Affiliation(s)
- Cheng Li
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
| | - Yu Zhao
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
| | - Tingting Liu
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
| | - Jun Huang
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
| | - Qi Zhang
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
| | - Benkang Liu
- College of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, Liaoning Province, PR China
| | - Shan Xiao
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
| | - Han Wang
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
| | - Bingnan Liu
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
| | - Jihui Wang
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China.
| | - Lina Cong
- Department of Biotechnology, School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, Liaoning Province, PR China
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Rorat A, Vandenbulcke F, Gałuszka A, Klimek B, Plytycz B. Protective role of metallothionein during regeneration in Eisenia andrei exposed to cadmium. Comp Biochem Physiol C Toxicol Pharmacol 2017; 203:39-50. [PMID: 29038073 DOI: 10.1016/j.cbpc.2017.10.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 10/02/2017] [Accepted: 10/04/2017] [Indexed: 02/08/2023]
Abstract
Lumbricid earthworms are often exposed to simultaneous action of various environmental stressors like soil contamination, temperature fluctuation or predators' attacks, which may induce extrusion of coelomocyte-containing coelomic fluid or loss of tail segments. If the injuries are not lethal, renewal of the immune-competent cells and soluble components of coelomic fluid and/or the regeneration of tail segments occurs. The aim of our investigations was to test the hypothesis that exposure of adult earthworms Eisenia andrei to cadmium-polluted soil at room temperature (RT) and/or low temperature (6°C) have adverse effects on restoration of experimentally depleted coelomocytes or on regeneration of amputated posterior segments. Intact control earthworms and their experimental counterparts subjected to electrostimulation-induced coelomocyte depletion or surgical amputation of posterior segments were maintained either in control soil or in soil spiked with cadmium chloride (500mg/kg air-dried soil) at RT or 6°C. Four weeks after the beginning of experiments, cadmium accumulation in earthworm bodies was significantly lower at 6°C than at room temperature. The numbers of restored cells and fluorophore contents were hardly affected by temperature or cadmium. However, cocoon production was reduced by cadmium and completely abolished at 6°C and regeneration of amputated posterior segments was inhibited in cold but was enhanced by cadmium exposure at RT. Independently on the temperature, the 4-week cadmium exposure of adult earthworms was connected with significantly upregulated expression of Cd-metallothionein (but not of catalase, lysenin and phytochelatin) in coelomocytes.
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Affiliation(s)
- Agnieszka Rorat
- Institute of Environmental Engineering, Czestochowa University of Technology, Czestochowa, Poland; Université de Lille, Sciences et Technologies, Laboratoire de Génie Civil et géo-Environnement, SN3 59655 Villeneuve d'Ascq, France.
| | - Franck Vandenbulcke
- Université de Lille, Sciences et Technologies, Laboratoire de Génie Civil et géo-Environnement, SN3 59655 Villeneuve d'Ascq, France
| | - Adrianna Gałuszka
- Department of Evolutionary Immunology, Institute of Zoology, Jagiellonian University, Krakow, Poland
| | - Beata Klimek
- Institute of Environmental Sciences, Jagiellonian University, Krakow, Poland
| | - Barbara Plytycz
- Department of Evolutionary Immunology, Institute of Zoology, Jagiellonian University, Krakow, Poland
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Zhou J, Zhao S, Fang WH, Zhou JF, Zhang JX, Ma H, Lan JF, Li XC. Newly identified invertebrate-type lysozyme (Splys-i) in mud crab (Scylla paramamosain) exhibiting muramidase-deficient antimicrobial activity. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 74:154-166. [PMID: 28438599 DOI: 10.1016/j.dci.2017.04.017] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 04/19/2017] [Accepted: 04/20/2017] [Indexed: 05/10/2023]
Abstract
Lysozymes are widely distributed immune effectors exerting muramidase activity against the peptidoglycan of the bacterial cell wall to trigger cell lysis. However, some invertebrate-type (i-type) lysozymes deficient of muramidase activity still exhibit antimicrobial activity. To date, the mechanism underlying the antimicrobial effect of muramidase-deficient i-type lysozymes remains unclear. Accordingly, this study characterized a novel i-type lysozyme, Splys-i, in the mud crab Scylla paramamosain. Splys-i shared the highest identity with the Litopenaeus vannamei i-type lysozyme (Lvlys-i2, 54% identity) at the amino acid level. Alignment analysis and 3D structure comparison show that Splys-i may be a muramidase-deficient i-type lysozyme because it lacks the two conserved catalytic residues (Glu and Asp) that are necessary for muramidase activity. Splys-i is mainly distributed in the intestine, stomach, gills, hepatopancreas, and hemocytes, and it is upregulated by Vibrio harveyi or Staphylococcus aureus challenge. Recombinant Splys-i protein (rSplys-i) can inhibit the growth of Gram-negative bacteria (V. harveyi, Vibrio alginolyticus, Vibrio parahemolyticus, and Escherichia coli), Gram-positive bacteria (S. aureus, Bacillus subtilis, and Bacillus megaterium), and the fungus Candida albicans to varying degrees. In this study, two binding assays and a bacterial agglutination assay were conducted to elucidate the potential antimicrobial mechanisms of Splys-i. Results demonstrated that rSplys-i could bind to all nine aforementioned microorganisms. It also exhibited a strong binding activity to lipopolysaccharide from E. coli and lipoteichoic acid and peptidoglycan (PGN) from S. aureus but a weak binding activity to PGN from B. subtilis and β-glucan from fungi. Moreover, rSplys-i could agglutinate these nine types of microorganisms in the presence of Ca2+ at different protein concentrations. These results suggest that the binding activity and its triggered agglutinating activity might be two major mechanisms of action to realize the muramidase-deficient antibacterial activity. In addition, rSplys-i can hydrolyze the peptidoglycan of some Gram-positive bacteria because it exhibits weak isopeptidase activities in salt and protein concentration-dependent manner. This result indicates that such an isopeptidase activity may contribute to the muramidase-deficient antimicrobial activity to a certain degree. In conclusion, Splys-i is upregulated by pathogenic bacteria, and it inhibits bacterial growth by binding and agglutination activities as well as isopeptidase activity, suggesting that Splys-i is involved in immune defense against bacteria through several different mechanisms of action.
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Affiliation(s)
- Jian Zhou
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture, Shanghai 200090, China; School of Aquaculture and Life Science, Shanghai Ocean University, Shanghai 201306, China
| | - Shu Zhao
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture, Shanghai 200090, China
| | - Wen-Hong Fang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture, Shanghai 200090, China
| | - Jun-Fang Zhou
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture, Shanghai 200090, China
| | - Jing-Xiao Zhang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture, Shanghai 200090, China
| | - Hongyu Ma
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Shantou University, Shantou 515063 China
| | - Jiang-Feng Lan
- Department of Aquatic Animal Medicine, College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Xin-Cang Li
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture, Shanghai 200090, China.
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Yang D, Wang Q, Cao R, Chen L, Liu Y, Cong M, Wu H, Li F, Ji C, Zhao J. Molecular characterization, expression and antimicrobial activities of two c-type lysozymes from manila clam Venerupis philippinarum. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 73:109-118. [PMID: 28344168 DOI: 10.1016/j.dci.2017.03.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/21/2017] [Accepted: 03/21/2017] [Indexed: 06/06/2023]
Abstract
Lysozymes play an important role in the innate immune responses with which mollusks respond to bacterial invasion through its lytic activity. In the present study, two c-type lysozymes (designed as VpCLYZ-1 and VpCLYZ-2, respectively) were identified and characterized from the manila clam Venerupis philippinarum. The full-length cDNA of VpCLYZ-1 and VpCLYZ-2 was of 629 and 736 bp, encoding a polypeptide of 156 and153 amino acid residues, respectively. The deduced amino acid sequences of VpCLYZs showed high similarity to other known invertebrate c-type lysozymes. Multiple alignments and phylogenetic relationship strongly suggested that VpCLYZ-1 and VpCLYZ-2 belonged to the c-type lysozyme family. Both VpCLYZ-1 and VpCLYZ-2 transcripts were constitutively expressed in a wide range of tissues with different levels. The VpCLYZ-1 transcript was dominantly expressed in hepatopancreas and hemocytes, while VpCLYZ-2 transcript was mainly expressed in the tissues of hepatopancreas and gills. Both the mRNA expression of VpCLYZ-1 and VpCLYZ-2 was significantly up-regulated at 12 h post Vibrio anguillarum challenge. The recombinant VpCLYZ-1 and VpCLYZ-2 (designed as rVpCLYZ-1 and rVpCLYZ-2) exhibited lytic activity against all tested bacteria, and rVpCLYZ-1 showed higher activities than rVpCLYZ-2 in killing Micrococcus luteus and V. anguillarum. Overall, our results suggested that VpCLYZ-1 and VpCLYZ-2 belonged to the c-type lysozyme family, and played important roles in the immune responses of manila clam, especially in the elimination of pathogens.
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Affiliation(s)
- Dinglong Yang
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Qing Wang
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China
| | - Ruiwen Cao
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Lizhu Chen
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yongliang Liu
- Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Ming Cong
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China
| | - Huifeng Wu
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China
| | - Fei Li
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China
| | - Chenglong Ji
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China
| | - Jianmin Zhao
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Yantai, Shandong 264003, PR China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.
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Yang D, Wang Q, Chen L, Liu Y, Cao R, Wu H, Li F, Ji C, Cong M, Zhao J. Molecular characterization and antibacterial activity of a phage-type lysozyme from the Manila clam, Ruditapes philippinarum. FISH & SHELLFISH IMMUNOLOGY 2017; 65:17-24. [PMID: 28365385 DOI: 10.1016/j.fsi.2017.03.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 03/28/2017] [Accepted: 03/29/2017] [Indexed: 05/25/2023]
Abstract
A phage-type lysozyme, designed as RpPLYZ, was cloned and characterized from the clam Ruditapes philippinarum. The full-length cDNA of RpPLYZ was of 699 bp with an open reading frame (ORF) of 534 bp, encoding a polypeptide of 177-amino acid with a calculated molecular mass of 19.6 kDa and an isoelectric point of 9.05. Multiple alignments and phylogenetic analysis strongly suggested that RpPLYZ was a new member of the phage-type lysozyme family. The mRNA transcript of RpPLYZ was found to be constitutively expressed in a wide range of tissues and mainly in hemocytes and mantle. The relative expression of RpPLYZ mRNA in hemocytes was significantly up-regulated at 6, 24, 48 and 72 h after Vibrio anguillarum challenge. The recombinant RpPLYZ (rRpPLYZ) showed high activity against Entherobacter cloacae and Staphyloccocus aureus, and less effective towards Entherobacter aerogenes and V. anguillarum. Moreover, the optimal pH, temperature and ionic strength for rRpPLYZ activity was determined to be 5.5, 50 °C and 5 mM, respectively. These results suggested that RpPLYZ was a member of the phage-type lysozyme family and perhaps played an important role in the immune responses against bacterial invasion.
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Affiliation(s)
- Dinglong Yang
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Qing Wang
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Lizhu Chen
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Yongliang Liu
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Ruiwen Cao
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Huifeng Wu
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Fei Li
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Chenglong Ji
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Ming Cong
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China
| | - Jianmin Zhao
- Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China; Muping Coastal Environment Research Station, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, PR China.
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Gravato-Nobre MJ, Vaz F, Filipe S, Chalmers R, Hodgkin J. The Invertebrate Lysozyme Effector ILYS-3 Is Systemically Activated in Response to Danger Signals and Confers Antimicrobial Protection in C. elegans. PLoS Pathog 2016; 12:e1005826. [PMID: 27525822 PMCID: PMC4985157 DOI: 10.1371/journal.ppat.1005826] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 07/25/2016] [Indexed: 12/17/2022] Open
Abstract
Little is known about the relative contributions and importance of antibacterial effectors in the nematode C. elegans, despite extensive work on the innate immune responses in this organism. We report an investigation of the expression, function and regulation of the six ilys (invertebrate-type lysozyme) genes of C. elegans. These genes exhibited a surprising variety of tissue-specific expression patterns and responses to starvation or bacterial infection. The most strongly expressed, ilys-3, was investigated in detail. ILYS-3 protein was expressed constitutively in the pharynx and coelomocytes, and dynamically in the intestine. Analysis of mutants showed that ILYS-3 was required for pharyngeal grinding (disruption of bacterial cells) during normal growth and consequently it contributes to longevity, as well as being protective against bacterial pathogens. Both starvation and challenge with Gram-positive pathogens resulted in ERK-MAPK-dependent up-regulation of ilys-3 in the intestine. The intestinal induction by pathogens, but not starvation, was found to be dependent on MPK-1 activity in the pharynx rather than in the intestine, demonstrating unexpected communication between these two tissues. The coelomocyte expression appeared to contribute little to normal growth or immunity. Recombinant ILYS-3 protein was found to exhibit appropriate lytic activity against Gram-positive cell wall material. Innate immune defenses against bacterial pathogenesis depend on the activation of antibacterial factors. We examined the expression and relative importance of a gene family encoding six invertebrate-type lysozymes in the much-studied nematode C. elegans. The ilys genes exhibit distinct patterns of tissue-specific expression and response to pathogenic challenge and/or starvation. The most abundantly expressed, ilys-3, exhibits constitutive pharyngeal expression, which we show is essential for efficient disruption of bacteria under non-pathogenic growth conditions, and consequently it contributes to normal longevity. ilys-3 is also strongly up-regulated in intestinal cells after starvation or exposure to Gram-positive pathogens such as Microbacterium nematophilum and acts as a ‘slow-effector’ in limiting pathogenic damage from intestinal infections. We show that this induction by pathogens depends on the action of an ERK-MAPK cascade, which acts in pharyngeal rather than intestinal cells; this implies communication between pharynx and intestine. Tagged ILYS-3 protein was detected mainly in recycling endosomes of intestinal cells and in the intestinal lumen after starvation. ILYS-3 was also expressed in coelomocytes (scavenger cells) but we found that these cells make little or no contribution to defense. We examined the enzymatic properties of recombinant ILYS-3 protein, finding that it has lytic activity against M. nematophilum cell-walls.
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Affiliation(s)
| | - Filipa Vaz
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
- School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom
| | - Sergio Filipe
- School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, United Kingdom
| | - Ronald Chalmers
- Laboratory of Bacterial Cell Surfaces and Pathogenesis, Instituto de Tecnologia Química e Biológica and Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Lisboa, Portugal
| | - Jonathan Hodgkin
- Department of Biochemistry, University of Oxford, Oxford, United Kingdom
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Beckert A, Wiesner J, Schmidtberg H, Lehmann R, Baumann A, Vogel H, Vilcinskas A. Expression and characterization of a recombinant i-type lysozyme from the harlequin ladybird beetle Harmonia axyridis. INSECT MOLECULAR BIOLOGY 2016; 25:202-15. [PMID: 26778648 DOI: 10.1111/imb.12213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Lysozymes are enzymes that destroy bacterial cell walls by hydrolysing the polysaccharide component of peptidoglycan. In insects, there are two classes of lysozymes, the c-type with muramidase activity and the i-type whose prototypical members from annelids and molluscs possess both muramidase and isopeptidase activities. Many insect genes encoding c-type and i-type lysozymes have been identified during genome and transcriptome analyses, but only c-type lysozymes have been functionally characterized at the protein level. Here we produced one of five i-type lysozymes represented in the immunity-related transcriptome of the invasive harlequin ladybird beetle Harmonia axyridis as recombinant protein. This was the only one containing the serine and histidine residues that are thought to be required for isopeptidase activity. This i-type lysozyme was recombinantly expressed in the yeast Pichia pastoris, but the purified protein was inactive in both muramidase and isopeptidase assays. Transcription and immunofluorescence analysis revealed that this i-type lysozyme is produced in the fat body but is not inducible by immune challenge. These data suggest that i-type lysozymes in insects may have acquired novel and as yet undetermined functions in the course of evolution.
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Affiliation(s)
- A Beckert
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
| | - J Wiesner
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
| | - H Schmidtberg
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
| | - R Lehmann
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
| | - A Baumann
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
| | - H Vogel
- Department of Entomology, Max-Planck-Institute for Chemical Ecology, Jena, Germany
| | - A Vilcinskas
- Department of Bioresources, Fraunhofer Institute for Molecular Biology and Applied Ecology, Gießen, Germany
- Institute for Insect Biotechnology, Justus-Liebig-University of Giessen, Giessen, Germany
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Dvořák J, Roubalová R, Procházková P, Rossmann P, Škanta F, Bilej M. Sensing microorganisms in the gut triggers the immune response in Eisenia andrei earthworms. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2016; 57:67-74. [PMID: 26684064 DOI: 10.1016/j.dci.2015.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 11/30/2015] [Accepted: 12/02/2015] [Indexed: 06/05/2023]
Abstract
The tube-within-tube body plan of earthworms is appropriate for studying the interactions of microorganisms with the immune system of body cavities such as the digestive tract and coelom. This study aims to describe the immune response on the molecular and cellular level in the coelomic cavity and the gut of the earthworm Eisenia andrei after experimental microbial challenge by administering two bacterial strains (Escherichia coli and Bacillus subtilis) or yeast Saccharomyces cerevisiae to the environment. The changes in mRNA levels of defense molecules (pattern recognition receptor CCF, lysozyme, fetidin/lysenins) in the coelomocytes and gut tissue were determined by quantitative PCR. The immune response at a cellular level was captured in histological sections, and the expression of CCF was localized using in situ hybridization. Coelomocytes respond to the presence of bacteria in the coelomic cavity by increasing the mRNA levels of defense molecules, especially CCF. The immune response in gut tissue is less affected by microbial stimulation because the epithelial cells of gut exhibit basically strong mRNA synthesis of ccf as a defense against the continuous microbial load in the gut lumen. The cellular immune response is mediated by coelomocytes released from the mesenchymal lining of the coelomic cavity. These combined immune mechanisms are necessary for the survival of earthworms in the microbially rich environment of soil.
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Affiliation(s)
- Jiří Dvořák
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v. v. i., Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Radka Roubalová
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v. v. i., Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Petra Procházková
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v. v. i., Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Pavel Rossmann
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v. v. i., Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - František Škanta
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v. v. i., Vídeňská 1083, 142 20, Prague 4, Czech Republic
| | - Martin Bilej
- Laboratory of Cellular and Molecular Immunology, Institute of Microbiology of the CAS, v. v. i., Vídeňská 1083, 142 20, Prague 4, Czech Republic.
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Liu HT, Wang J, Mao Y, Liu M, Niu SF, Qiao Y, Su YQ, Wang CZ, Zheng ZP. Identification and expression analysis of a new invertebrate lysozyme in Kuruma shrimp (Marsupenaeus japonicus). FISH & SHELLFISH IMMUNOLOGY 2016; 49:336-343. [PMID: 26723264 DOI: 10.1016/j.fsi.2015.12.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Revised: 12/16/2015] [Accepted: 12/21/2015] [Indexed: 06/05/2023]
Abstract
Lysozyme is an important component of the innate immunity system against invading pathogens. An invertebrate (i-type) lysozyme from the hepatopancreas of Kuruma shrimp Marsupenaeus japonicus (Mj-ilys) was identified. The full-length cDNA of Mj-ilys was 580bp with a 429 bp open reading frame encoding a 142 amino acid polypeptide. The encoded polypeptide was predicted to have a 17 amino acid signal peptide, and a 125 amino acid mature protein with a theoretical mass of 14.099 kDa and an isoelectric point (pI) of 4.18. A Destabilase conserved domain was predicted in Mj-ilys amino acid sequences which may be stable by 10 cysteine residues forming 5 disulfide bonds. Mj-ilys may loss the muramidase and isopeptidase activities due to the lack of the key catalytic residues. Mj-ilys had high homologous of 80-82% with i-type lysozymes of penaeid shrimps. It was first grouped with other i-type lysozyme of shrimps and crabs in a phylogenetic tree predicted by the Neighbor-Joining method. Mj-ilys mRNA was expressed mainly in hepatopancreas and almost undetectable in other tissues. The mRNA expression of Mj-ilys were all found from fertilized eggs to post-larvae of 17 days (PL17), and its expression exhibited significant differences among each developmental stage. After white spot syndrome virus (WSSV) challenge (3.6 × 10(8) virions/μl), the time-dependent expression pattern of Mj-ilys in hepatopancreas and gills showed significantly different. These results indicated that Mj-ilys is potentially involved in the ontogenesis and immune defense in Kuruma shrimp.
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Affiliation(s)
- Hong-Tao Liu
- State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Jun Wang
- State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Yong Mao
- State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Min Liu
- State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Su-Fang Niu
- State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Ying Qiao
- State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, Fujian 361102, China
| | - Yong-Quan Su
- State Key Laboratory of Marine Environmental Sciences, Xiamen University, Xiamen, Fujian 361102, China.
| | | | - Zhi-Peng Zheng
- Putian Tian-ran-xing Agricultural Development Co. Ltd., Putian, Fujian 351100, China
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Plaza DF, Schmieder SS, Lipzen A, Lindquist E, Künzler M. Identification of a Novel Nematotoxic Protein by Challenging the Model Mushroom Coprinopsis cinerea with a Fungivorous Nematode. G3 (BETHESDA, MD.) 2015; 6:87-98. [PMID: 26585824 PMCID: PMC4704728 DOI: 10.1534/g3.115.023069] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Accepted: 10/29/2015] [Indexed: 01/06/2023]
Abstract
The dung of herbivores, the natural habitat of the model mushroom Coprinopsis cinerea, is a nutrient-rich but also very competitive environment for a saprophytic fungus. We showed previously that C. cinerea expresses constitutive, tissue-specific armories against antagonists such as animal predators and bacterial competitors. In order to dissect the inducible armories against such antagonists, we sequenced the poly(A)-positive transcriptome of C. cinerea vegetative mycelium upon challenge with fungivorous and bacterivorous nematodes, Gram-negative and Gram-positive bacteria and mechanical damage. As a response to the fungivorous nematode Aphelenchus avenae, C. cinerea was found to specifically induce the transcription of several genes encoding previously characterized nematotoxic lectins. In addition, a previously not characterized gene encoding a cytoplasmic protein with several predicted Ricin B-fold domains, was found to be strongly upregulated under this condition. Functional analysis of the recombinant protein revealed a high toxicity toward the bacterivorous nematode Caenorhabditis elegans. Challenge of the mycelium with A. avenae also lead to the induction of several genes encoding putative antibacterial proteins. Some of these genes were also induced upon challenge of the mycelium with the bacteria Escherichia coli and Bacillus subtilis. These results suggest that fungi have the ability to induce specific innate defense responses similar to plants and animals.
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Affiliation(s)
- David Fernando Plaza
- Institute of Microbiology, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
| | | | - Anna Lipzen
- Genomic Technologies, Joint Genome Institute, Walnut Creek, California 94598
| | - Erika Lindquist
- Genomic Technologies, Joint Genome Institute, Walnut Creek, California 94598
| | - Markus Künzler
- Institute of Microbiology, Department of Biology, ETH Zürich, 8093 Zürich, Switzerland
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Hayashi Y, Miclaus T, Engelmann P, Autrup H, Sutherland DS, Scott-Fordsmand JJ. Nanosilver pathophysiology in earthworms: Transcriptional profiling of secretory proteins and the implication for the protein corona. Nanotoxicology 2015; 10:303-11. [PMID: 26119277 DOI: 10.3109/17435390.2015.1054909] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
Abstract
Previously we have identified lysenin as a key protein constituent of the secretome from Eisenia fetida coelomocytes and revealed its critical importance in priming interactions between the cells and the protein corona around nanosilver. As alterations of the protein environment can directly affect the corona composition, the extent to which nanoparticles influence the cells' protein secretion profile is of remarkable interest that has rarely acquired attention. Here, we have probed transcriptional responses of E. fetida coelomocytes to the representative nanosilver NM-300K (15 nm) in a time-dependent manner (2, 4, 8 and 24 h at a low-cytotoxic concentration), and examined the implication of the temporal changes in transcriptional profiles of secretory proteins with a particular reference to that of lysenin. NM-300K was accumulated in/at the cells and lysenin was, after transient induction, gradually suppressed over time indicating a negative feedback cycle. This may limit further enrichment of lysenin in the corona and thereby decrease the lysenin-assisted uptake of the nanoparticles. Other differentially expressed genes were those involved in metal stress (likewise in AgNO3-stressed cells) and in Toll-like receptor (TLR) signaling. This offers an intriguing perspective of the nanosilver pathophysiology in earthworms, in which the conserved pattern recognition receptor TLRs may play an effector role.
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Affiliation(s)
- Yuya Hayashi
- a iNANO Interdisciplinary Nanoscience Center, Aarhus University , Aarhus , Denmark .,b Department of Bioscience - Soil Fauna Ecology and Ecotoxicology , Aarhus University , Silkeborg , Denmark
| | - Teodora Miclaus
- a iNANO Interdisciplinary Nanoscience Center, Aarhus University , Aarhus , Denmark
| | - Péter Engelmann
- c Department of Immunology and Biotechnology , Clinical Center, University of Pécs , Pécs , Hungary , and
| | - Herman Autrup
- d Department of Public Health , Aarhus University , Aarhus , Denmark
| | - Duncan S Sutherland
- a iNANO Interdisciplinary Nanoscience Center, Aarhus University , Aarhus , Denmark
| | - Janeck J Scott-Fordsmand
- b Department of Bioscience - Soil Fauna Ecology and Ecotoxicology , Aarhus University , Silkeborg , Denmark
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High-level soluble expression of the functional peptide derived from the C-terminal domain of the sea cucumber lysozyme and analysis of its antimicrobial activity. ELECTRON J BIOTECHN 2014. [DOI: 10.1016/j.ejbt.2014.09.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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Roubalová R, Dvořák J, Procházková P, Elhottová D, Rossmann P, Škanta F, Bilej M. The effect of dibenzo-p-dioxin- and dibenzofuran-contaminated soil on the earthworm Eisenia andrei. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2014; 193:22-28. [PMID: 24992343 DOI: 10.1016/j.envpol.2014.05.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Revised: 05/26/2014] [Accepted: 05/29/2014] [Indexed: 06/03/2023]
Abstract
Polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) belong to the group of persistent organic pollutants, highly toxic environmental pollutants that include hydrophobic compounds with the tendency to bioaccumulate. Earthworms (Eisenia andrei) were exposed to PCDD/Fs-contaminated soil, and changes in their lipophilic structures and the gene expression of their defense molecules were followed. Damage to the intestinal wall and adjacent chloragogenous tissue was observed. Further, the up-regulation of the expression of several genes was detected. On the basis of these results, the mechanism of the impact of PCDD/Fs on earthworms has been proposed. Dioxins that accumulate in the lipophilic structures cause an increase in reactive oxidative species that triggers oxidative stress followed by the gene expression of two molecules that play a role in protection against oxidant toxicity, calreticulin (CRT) and Hsp70. Moreover, the effect of microbial biomass on the expression of coelomic cytolytic factor (CCF), a pattern recognition receptor, was also observed.
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Affiliation(s)
- Radka Roubalová
- Department of Immunology, Institute of Microbiology of the Academy of Sciences of the Czech Republic, v. v. i., Vídeňská 1083, 142 20, Praha 4, Czech Republic.
| | - Jiří Dvořák
- Department of Immunology, Institute of Microbiology of the Academy of Sciences of the Czech Republic, v. v. i., Vídeňská 1083, 142 20, Praha 4, Czech Republic.
| | - Petra Procházková
- Department of Immunology, Institute of Microbiology of the Academy of Sciences of the Czech Republic, v. v. i., Vídeňská 1083, 142 20, Praha 4, Czech Republic.
| | - Dana Elhottová
- Biology Centre of the Academy of Sciences of the Czech Republic, v. v. i., Institute of Soil Biology, Na Sádkách 7, 370 05, České Budějovice, Czech Republic.
| | - Pavel Rossmann
- Department of Immunology, Institute of Microbiology of the Academy of Sciences of the Czech Republic, v. v. i., Vídeňská 1083, 142 20, Praha 4, Czech Republic.
| | - František Škanta
- Department of Immunology, Institute of Microbiology of the Academy of Sciences of the Czech Republic, v. v. i., Vídeňská 1083, 142 20, Praha 4, Czech Republic.
| | - Martin Bilej
- Department of Immunology, Institute of Microbiology of the Academy of Sciences of the Czech Republic, v. v. i., Vídeňská 1083, 142 20, Praha 4, Czech Republic.
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Guo Y, He H. Identification and characterization of a goose-type lysozyme from sewage snail Physa acuta. FISH & SHELLFISH IMMUNOLOGY 2014; 39:321-325. [PMID: 24882016 DOI: 10.1016/j.fsi.2014.05.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Revised: 05/16/2014] [Accepted: 05/19/2014] [Indexed: 06/03/2023]
Abstract
Freshwater snail Physa acuta has been considered as an important invasive species and medical mollusc. Field investigation has shown that this snail could survive better than other snails in polluted water bodies. To understand the immune mechanisms of P. acuta, suppression subtractive hybridization hepatopancreas cDNA library has been constructed with bacterial challenge. In this study, a full-length cDNA of a novel goose-type lysozyme (PALysG) has been identified from P. acuta by EST and RACE technique. The conservative structure domains share high homology with other molluscan g-type lysozymes including the SLT domain, the substrate binding sites, the catalytic residues, three alpha-helices structures and six molluscan specific cysteines. Meanwhile, PALysG is the first record of goose-type lysozyme in Gastropoda. Real-time PCR indicated that PALysG mRNA had been expressed significantly at high levels in hepatopancreas for 8-48 h. PALysG recombinant protein displayed the lytic activity of g-type lysozyme with other organisms against Micrococcus lysodikicus.
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Affiliation(s)
- Yunhai Guo
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai 200025, China; Key Laboratory of Parasite and Vector Biology of the Chinese Ministry of Health, WHO Collaborating Centre for Malaria, Schistosomiasis and Filariasis, Shanghai 200025, China
| | - Hongxuan He
- Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.
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Microbial environment affects innate immunity in two closely related earthworm species Eisenia andrei and Eisenia fetida. PLoS One 2013; 8:e79257. [PMID: 24223917 PMCID: PMC3815151 DOI: 10.1371/journal.pone.0079257] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 09/19/2013] [Indexed: 11/19/2022] Open
Abstract
Survival of earthworms in the environment depends on their ability to recognize and eliminate potential pathogens. This work is aimed to compare the innate defense mechanisms of two closely related earthworm species, Eisenia andrei and Eisenia fetida, that inhabit substantially different ecological niches. While E. andrei lives in a compost and manure, E. fetida can be found in the litter layer in forests. Therefore, the influence of environment-specific microbiota on the immune response of both species was followed. Firstly, a reliable method to discern between E. andrei and E. fetida based on species-specific primers for cytochrome c oxidase I (COI) and stringent PCR conditions was developed. Secondly, to analyze the immunological profile in both earthworm species, the activity and expression of lysozyme, pattern recognition protein CCF, and antimicrobial proteins with hemolytic function, fetidin and lysenins, have been assessed. Whereas, CCF and lysozyme showed only slight differences in the expression and activity, fetidin/lysenins expression as well as the hemolytic activity was considerably higher in E. andrei as compared to E. fetida. The expression of fetidin/lysenins in E. fetida was not affected upon the challenge with compost microbiota, suggesting more substantial changes in the regulation of the gene expression. Genomic DNA analyses revealed significantly higher level of fetidin/lysenins (determined using universal primer pairs) in E. andrei compared to E. fetida. It can be hypothesized that E. andrei colonizing compost as a new habitat acquired an evolutionary selection advantage resulting in a higher expression of antimicrobial proteins.
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Procházková P, Šustr V, Dvořák J, Roubalová R, Škanta F, Pižl V, Bilej M. Correlation between the activity of digestive enzymes and nonself recognition in the gut of Eisenia andrei earthworms. J Invertebr Pathol 2013; 114:217-21. [DOI: 10.1016/j.jip.2013.08.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/12/2013] [Accepted: 08/19/2013] [Indexed: 11/26/2022]
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Bathige SDNK, Umasuthan N, Kasthuri SR, Whang I, Lim BS, Nam BH, Lee J. A bifunctional invertebrate-type lysozyme from the disk abalone, Haliotis discus discus: genome organization, transcriptional profiling and biological activities of recombinant protein. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2013; 41:282-94. [PMID: 23796790 DOI: 10.1016/j.dci.2013.06.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Revised: 06/11/2013] [Accepted: 06/16/2013] [Indexed: 05/10/2023]
Abstract
Lysozyme is an important enzyme in the innate immune system that plays a vital role in fighting microbial infections. In the current study, we identified, cloned, and characterized a gene that encodes an invertebrate-type lysozyme from the disk abalone, Haliotis discus discus (abLysI). The full-length cDNA of abLysI consisted of 545 bp with an open reading frame of 393 bp that encodes 131 amino acids. The theoretical molecular mass of mature abLysI was 12.3 kDa with an isoelectric point of 8.03. Conserved features in other homologs, such as catalytic sites for lytic activity (Glu(30) and Asp(41)), isopeptidase activity (His(107)), and ten cysteine residues were identified in abLysI. Genomic sequence analysis with respect to its cDNA showed that abLysI was organized into four exons interrupted by three introns. Several immune-related transcription factor binding sites were discovered in the putative promoter region. Homology and phylogeny analysis of abLysI depicted high identity and closer proximity, respectively, with an annelid i-type lysozyme from Hirudo medicinalis, and indicated that abLysI is a novel molluscan i-type lysozyme. Tissue-specific expressional studies revealed that abLysI is mainly transcribed in hepatopancreas followed by mantle. In addition, abLysI mRNA expression was induced following bacterial (Vibrio parahaemolyticus and Listeria monocytogenes) and viral (viral hemorrhagic septicemia virus) challenges. Recombinantly expressed abLysI [(r)abLysI] demonstrated strong lytic activity against Micrococcus lysodeikticus, isopeptidase activity, and antibacterial activity against several Gram-positive and Gram-negative bacteria. Moreover, (r)abLysI showed optimum lytic activity at pH 4.0 and 60 °C, while exhibiting optimum isopeptidase activity at pH 7.0. Taken together, these results indicate that abLysI is potentially involved in immune responses of the disk abalone to protect it from invaders.
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Affiliation(s)
- S D N K Bathige
- Department of Marine Life Sciences, School of Marine Biomedical Sciences, Jeju National University, Jeju Self-Governing Province 690-756, Republic of Korea
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Van Herreweghe JM, Michiels CW. Invertebrate lysozymes: Diversity and distribution, molecular mechanism and in vivo function. J Biosci 2012; 37:327-48. [DOI: 10.1007/s12038-012-9201-y] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Fiołka MJ, Zagaja MP, Hułas-Stasiak M, Wielbo J. Activity and immunodetection of lysozyme in earthworm Dendrobaena veneta (Annelida). J Invertebr Pathol 2012; 109:83-90. [DOI: 10.1016/j.jip.2011.10.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 09/13/2011] [Accepted: 10/03/2011] [Indexed: 11/30/2022]
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Narmadha G, Muneswararao K, Rajesh A, Yenugu S. Characterization of a novel lysozyme-like 4 gene in the rat. PLoS One 2011; 6:e27659. [PMID: 22110709 PMCID: PMC3217008 DOI: 10.1371/journal.pone.0027659] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Accepted: 10/21/2011] [Indexed: 12/02/2022] Open
Abstract
Lysozyme-like proteins (LYZLs) belong to the class of c-type lysozymes and are not well characterized in many species including the rat. In this study, using in silico and molecular biology techniques, we report the identification, cloning and characterization of rat Lyzl4 gene and also determine the expression pattern of Lyzl1, Lyzl3 and Lyzl6. The rat Lyzl genes were found to be distributed on three chromosomes and all of them retained the characteristic eight cysteine signature of c-type lysozyme. Homology modeling of rat LYZL4 indicated that its structure is similar to that of the mouse SLLP1. In the male reproductive tract of rat, Lyzl gene expression was confined to the testis. Lyzl1 and Lyzl4 were found to be expressed in tissues beyond the male reproductive tract, whereas Lyzl3 and Lyzl6 were not. Lyzl expression in the developing (10-60 day old) rats was androgen dependent in the testis. Immunodetection using antibodies against rat LYZL4 revealed the presence of LYZL4 protein in the germinal layer of the testes and on the sperm tail. Recombinant LYZL4 did not exhibit antibacterial, muramidase and isopeptidase activities characteristic to c-type lysozyme. To the best of our knowledge, for the first time we report the characterization of Lyzl genes in the rat. Results of our study indicate that rat LYZL proteins may have an important role in male reproductive tract function.
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Affiliation(s)
- Ganapathy Narmadha
- Department of Animal Sciences, University of Hyderabad, Hyderabad, India
| | | | - Angireddy Rajesh
- Department of Animal Sciences, University of Hyderabad, Hyderabad, India
| | - Suresh Yenugu
- Department of Animal Sciences, University of Hyderabad, Hyderabad, India
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Wang X, Chang L, Sun Z. Differential expression of genes in the earthworm Eisenia fetida following exposure to Escherichia coli O157:H7. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2011; 35:525-529. [PMID: 21187111 DOI: 10.1016/j.dci.2010.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Revised: 12/16/2010] [Accepted: 12/17/2010] [Indexed: 05/30/2023]
Abstract
In this study, suppression subtractive hybridization was used to construct forward and reverse cDNA libraries to identify genes involved in the response of Eisenia fetida after exposure to Escherichia coli O157:H7. We cloned 1428 cDNAs or expressed sequence tags (ESTs), of which 738 were confirmed to be differentially expressed on dot blotting analysis. A total of 394 good-quality ESTs (GenBank dbEST accession numbers HO001170-HO001563) were obtained from the raw clone sequences after cleaning. The genes were associated with metabolism (10%), transport (10%), translation (5%), immunity (2%), and the cytoskeleton (1%). Thirteen candidates were selected to assess expression levels in earthworms exposed to artificially contaminated soil by real-time PCR. The translated amino acid sequences of clones were similar to fibrinolytic protease 1, extracellular globin-3, myosin essential light chain, lumbrokinase, lysozyme, ferritin, ATP synthase F0 subunit 6, and hsp 70. Characterization of differential gene expression in the earthworm E. fetida on exposure to E. coli O157:H7 expands our understanding of the molecular mechanisms of interactions at the earthworm-pathogen interface.
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Affiliation(s)
- Xing Wang
- College of Resources and Environmental Sciences, China Agricultural University, No. 2, Yuanmingyuan West Road, Beijing 100193, PR China
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Yue X, Liu B, Xue Q. An i-type lysozyme from the Asiatic hard clam Meretrix meretrix potentially functioning in host immunity. FISH & SHELLFISH IMMUNOLOGY 2011; 30:550-8. [PMID: 21134465 DOI: 10.1016/j.fsi.2010.11.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Revised: 10/31/2010] [Accepted: 11/28/2010] [Indexed: 05/02/2023]
Abstract
Lysozymes function in animal immunity. Three types of lysozyme have been identified in animal kingdom and most lysozymes identified from bivalve molluscs belong to the invertebrate (i) type. In this research, we cloned and sequenced a new i-type lysozyme, named MmeLys, from the Asiatic hard clam Meretrix meretrix. MmeLys cDNA was constituted of 552 bp, with a 441 bp open reading frame encoding a 146 amino acid polypeptide. The encoded polypeptide was predicted to have a 15 amino acid signal peptide, and a 131 amino acid mature protein with a theoretical mass of 14601.44 Da and an isoelectric point (pI) of 7.14. MmeLys amino acid sequence bore 64% identity with the Manila clam (Venerupis philippinarum) i-type lysozyme and was grouped with other veneroid i-type lysozymes in a bivalve lysozyme phylogenetic tree predicted using Neighbor-Jointing method. Recombinantly expressed MmeLys showed lysozyme activity and strong antibacterial activity against Gram positive and Gram negative bacteria. MmeLys mRNA and protein were detected to be mainly produced in hepatopancreas and gill by the methods of semi-quantitative RT-PCR and western blotting. In addition, MmeLys gene expression increased following Vibrio parahaemolyticus challenge. Results of this research indicated that MmeLys represents a new i-type lysozyme that likely functions in M. meretrix immunity.
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Affiliation(s)
- Xin Yue
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
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Bilej M, Procházková P, Silerová M, Josková R. Earthworm immunity. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 708:66-79. [PMID: 21528693 DOI: 10.1007/978-1-4419-8059-5_4] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Earthworms belonging to oligochaete annelids became a model for comparative immunologists in the early sixties with the publication of results from transplantation experiments that proved the existence of self/nonself recognition in earthworms. This initiated extensive studies on the earthworm immune mechanisms that evolved to prevent the invasion of pathogens. In the last four decades important cellular and humoral pathways were described and numerous biologically active compounds were characterized and often cloned.
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Affiliation(s)
- Martin Bilej
- Institute of Microbiology, Academy of Sciences of the Czech Republic, Prague, Czech Republic.
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