51
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Chen L, Gao X, Li R, Zhang L, Huang R, Wang L, Song Y, Xing Z, Liu T, Nie X, Nie F, Hua S, Zhang Z, Wang F, Ma RZ, Zhang L. Complete genome of a unicellular parasite ( Antonospora locustae) and transcriptional interactions with its host locust. Microb Genom 2020; 6:mgen000421. [PMID: 32783805 PMCID: PMC7643970 DOI: 10.1099/mgen.0.000421] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 07/26/2020] [Indexed: 11/18/2022] Open
Abstract
Microsporidia are a large group of unicellular parasites that infect insects and mammals. The simpler life cycle of microsporidia in insects provides a model system for understanding their evolution and molecular interactions with their hosts. However, no complete genome is available for insect-parasitic microsporidian species. The complete genome of Antonospora locustae, a microsporidian parasite that obligately infects insects, is reported here. The genome size of A. locustae is 3 170 203 nucleotides, composed of 17 chromosomes onto which a total of 1857 annotated genes have been mapped and detailed. A unique feature of the A. locustae genome is the presence of an ultra-low GC region of approximately 25 kb on 16 of the 17 chromosomes, in which the average GC content is only 20 %. Transcription profiling indicated that the ultra-low GC region of the parasite could be associated with differential regulation of host defences in the fat body to promote the parasite's survival and propagation. Phylogenetic gene analysis showed that A. locustae, and the microsporidian family in general, is likely at an evolutionarily transitional position between prokaryotes and eukaryotes, and that it evolved independently. Transcriptomic analysis showed that A. locustae can systematically inhibit the locust phenoloxidase PPO, TCA and glyoxylate cycles, and PPAR pathways to escape melanization, and can activate host energy transfer pathways to support its reproduction in the fat body, which is an insect energy-producing organ. Our study provides a platform and model for studies of the molecular mechanisms of microsporidium-host interactions in an energy-producing organ and for understanding the evolution of microsporidia.
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Affiliation(s)
- Longxin Chen
- Key Laboratory for Biological Control, The Ministry of Agriculture of China, China Agricultural University, Beijing 100193, PR China
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Xingke Gao
- Key Laboratory for Biological Control, The Ministry of Agriculture of China, China Agricultural University, Beijing 100193, PR China
| | - Runting Li
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071001, PR China
| | - Limeng Zhang
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
- College of Animal Science and Technology, Hebei Agricultural University, Baoding 071001, PR China
| | - Rui Huang
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, PR China
- School of Life Sciences, The University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Linqing Wang
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
| | - Yue Song
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
| | - Zhenzhen Xing
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
| | - Ting Liu
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
| | - Xiaoning Nie
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
| | - Fangyuan Nie
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, PR China
- School of Life Sciences, The University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Shuang Hua
- Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun 130112, PR China
| | - Zihan Zhang
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
| | - Feng Wang
- Key Laboratory of Protein and Peptide Pharmaceuticals, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, PR China
| | - Runlin Z. Ma
- Molecular Biology Laboratory, Zhengzhou Normal University, Zhengzhou 450044, PR China
- State Key Laboratory for Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, PR China
- School of Life Sciences, The University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Long Zhang
- Key Laboratory for Biological Control, The Ministry of Agriculture of China, China Agricultural University, Beijing 100193, PR China
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Wang Z, Zhou J, Li J, Zou J, Fan L. The immune defense response of Pacific white shrimp (Litopenaeus vannamei) to temperature fluctuation. FISH & SHELLFISH IMMUNOLOGY 2020; 103:103-110. [PMID: 32348886 DOI: 10.1016/j.fsi.2020.04.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/18/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
Temperature is a significant environmental factor contributing to the success of aquaculture. To investigate the immune defense response during temperature fluctuation, Litopenaeus vannamei (L. vannamei) was treated under conditions of gradual cooling from an acclimation temperature of 28 °C (C group) to 13 °C (T group) in 2 days with a cooling rate of 7.5 °C/d and then rewarmed to 28 °C (R group) using the same rate. Relative expression of immune defense system-related genes and intestinal microbial composition in L. vannamei were investigated. The results showed that with a decrease in temperature, the expression of TLR, IMD, proPO and Casp3 in intestine was significantly decreased, while the expression of Muc-3A, Muc-5AC, Muc-17, IAP, p53, HSP70, MT and Fer was significantly increased after cooling. After temperature recovery, gene expression generally showed a trend of recovering to the normal level (C). Intestinal microbial analysis showed that, compared with the C group, the Chao and Ace indexes, the relative abundance of microflora from the Phylum Bacteroidetes, Class Alphaproteobacteria, and Class Bacteroidia, significantly decreased in the R group. The results revealed that cold-stress may decrease microbial community richness, alter the bacterial community in general and reduce shrimp immunity to pathogens and antibacterial activity. As a result, during temperature fluctuation shrimp may mobilize the immune defense system through upregulating the expression of Muc genes, anti-apoptosis related genes, and antioxidant related genes in order to maintain organism homeostasis as well as to repair damaged intestinal tissue.
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Affiliation(s)
- Zhenlu Wang
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, PR China
| | - Jiang Zhou
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, PR China
| | - Junyi Li
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, PR China
| | - Jixing Zou
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, PR China.
| | - Lanfen Fan
- College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, PR China; Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangzhou, 510642, PR China.
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Sirikharin R, Söderhäll K, Söderhäll I. The N-terminal peptide generated after activation of prophenoloxidase affects crayfish hematopoiesis. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 108:103687. [PMID: 32220618 DOI: 10.1016/j.dci.2020.103687] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/19/2020] [Accepted: 03/19/2020] [Indexed: 06/10/2023]
Abstract
The circulating hemocytes of invertebrates are important mediators of immunity, and hemocyte homeostasis is of high importance for survival and health of crustaceans. The prophenoloxidase (proPO)-activating system is one of the most essential immune reactions, which can be activated by pattern recognition proteins from microorganisms. Activation of proPO by the proPO activating enzyme generates an N-terminal peptide, with cleavage site after Arg176, as well as the active enzyme phenoloxidase, which is the key enzyme for melanization. In the present study we demonstrate a role for the N-terminal proPO-peptide in hematopoiesis. Injection of this proPO-peptide increased the number of circulating hemocytes and especially granular hemocytes. We also show that the reactive oxygen species (ROS) production in the anterior proliferative center was enhanced after proPO peptide injection, which is a prerequisite for rapid hemocyte release from the hematopoietic tissue. Moreover, this peptide had an effect on ROS production in in vitro cultured hematopoietic cells and induced spreading of these cells within 72 h. Taken together, our findings show a role of the N-terminal proPO peptide in stimulation of hematopoiesis in crayfish, Pacifastacus leniusculus.
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Affiliation(s)
- Ratchanok Sirikharin
- Department of Comparative Physiology, Uppsala University, Norbyvägen 18 A, SE752 36, Uppsala, Sweden
| | - Kenneth Söderhäll
- Science for Life Laboratory, Department of Comparative Physiology, Uppsala University, Norbyvägen 18A, 752 36, Uppsala, Sweden
| | - Irene Söderhäll
- Science for Life Laboratory, Department of Comparative Physiology, Uppsala University, Norbyvägen 18A, 752 36, Uppsala, Sweden.
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Pilotto MR, Argenta N, Forte JM, Hostins B, Menezes FGR, Maggioni R, de Sousa OV, Wasielesky W, Rosa RD, Perazzolo LM. Environmental rearing conditions are key determinants of changes in immune gene expression patterns in shrimp midgut. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2020; 106:103618. [PMID: 31972176 DOI: 10.1016/j.dci.2020.103618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 08/28/2019] [Accepted: 01/14/2020] [Indexed: 06/10/2023]
Abstract
The super-intensive BioFloc Technology (BFT) system has been highlighted as a promising eco-friendly alternative to the traditional shrimp rearing systems. To gain insight into the impact of environmental rearing conditions on shrimp intestinal immunity, we assessed the expression profile of key immunological genes in the midgut of Litopenaeus vannamei shrimp reared in two contrasting culture systems: the indoor super-intensive BFT and the outdoor intensive Green-Water System (GWS). From the 30 analyzed genes, the expression levels of 25 genes were higher in the midgut of shrimp reared in BFT than in GWS. The main functional categories represented in BFT-shrimp were the prophenoloxidase-activating system, immune signaling, antimicrobial peptides, and RNA interference pathway. Comparatively, only the RNAi pathway gene Dicer-1 (LvDcr1) was more expressed in animals from the GWS group. However, despite the differences in gene expression, the total midgut bacterial abundance was similar between the experimental groups. Altogether, our results suggest that the microbial-rich environment offered by the BFT system can be acting as an immunostimulant by altering the immune expression profile of the midgut. The gene expression level found in GWS animals could be related to the chronic presence of the IMNV in the Brazilian Northeast. Knowing the effects of environmental stress factors on the intestinal immune defenses can provide an in-depth understanding of the relationship between cultivated shrimp and the major pathogens affecting the shrimp industry.
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Affiliation(s)
- Mariana Rangel Pilotto
- Laboratory of Immunology Applied to Aquaculture, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, CEP 88040-900, Florianópolis, SC, Brazil
| | - Nicolas Argenta
- Laboratory of Immunology Applied to Aquaculture, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, CEP 88040-900, Florianópolis, SC, Brazil
| | - Jamille Martins Forte
- Center of Studies and Diagnosis of Aquatic Organism Diseases, Marine Sciences Institute, Federal University of Ceará, CEP 60165-081, Fortaleza, CE, Brazil
| | - Bárbara Hostins
- Aquaculture and Marine Biotechnology Group, Institute of Oceanography, Federal University of Rio Grande, CEP 96201-900, Rio Grande, RS, Brazil
| | | | - Rodrigo Maggioni
- Center of Studies and Diagnosis of Aquatic Organism Diseases, Marine Sciences Institute, Federal University of Ceará, CEP 60165-081, Fortaleza, CE, Brazil
| | - Oscarina Viana de Sousa
- Laboratory of Fish and Environmental Microbiology, Marine Sciences Institute, Federal University of Ceará, CEP 60165-081, Fortaleza, CE, Brazil
| | - Wilson Wasielesky
- Aquaculture and Marine Biotechnology Group, Institute of Oceanography, Federal University of Rio Grande, CEP 96201-900, Rio Grande, RS, Brazil
| | - Rafael Diego Rosa
- Laboratory of Immunology Applied to Aquaculture, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, CEP 88040-900, Florianópolis, SC, Brazil
| | - Luciane Maria Perazzolo
- Laboratory of Immunology Applied to Aquaculture, Department of Cell Biology, Embryology and Genetics, Federal University of Santa Catarina, CEP 88040-900, Florianópolis, SC, Brazil.
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55
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Riciluca KCT, Borges AC, Mello JFR, de Oliveira UC, Serdan DC, Florez-Ariza A, Chaparro E, Nishiyama MY, Cassago A, Junqueira-de-Azevedo ILM, van Heel M, Silva PI, Portugal RV. Myriapod haemocyanin: the first three-dimensional reconstruction of Scolopendra subspinipes and preliminary structural analysis of S. viridicornis. Open Biol 2020; 10:190258. [PMID: 32228398 PMCID: PMC7241075 DOI: 10.1098/rsob.190258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Haemocyanins (Hcs) are copper-containing, respiratory proteins that occur in the haemolymph of many arthropod species. Here, we report the presence of Hcs in the chilopode Myriapoda, demonstrating that these proteins are more widespread among the Arthropoda than previously thought. The analysis of transcriptome of S. subspinipes subpinipes reveals the presence of two distinct subunits of Hc, where the signal peptide is present, and six of prophenoloxidase (PPO), where the signal peptide is absent, in the 75 kDa range. Size exclusion chromatography profiles indicate different quaternary organization for Hc of both species, which was corroborated by TEM analysis: S. viridicornis Hc is a 6 × 6-mer and S. subspinipes Hc is a 3 × 6-mer, which resembles the half-structure of the 6 × 6-mer but also includes the presence of phenoloxidases, since the 1 × 6-mer quaternary organization is commonly associated with hexamers of PPO. Studies with Chelicerata showed that PPO activity are exclusively associated with the Hcs. This study indicates that Scolopendra may have different proteins playing oxygen transport (Hc) and PO function, both following the hexameric oligomerization observed in Hcs.
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Affiliation(s)
- K C T Riciluca
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, Brazil.,Laboratório de Toxinologia Aplicada (LETA), Centro de Toxinas, Imuno-Resposta e Sinalização Celular (CeTICS/CEPID) - Instituto Butantan, São Paulo, Brazil
| | - A C Borges
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, Brazil
| | - J F R Mello
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, Brazil
| | - U C de Oliveira
- Laboratório de Toxinologia Aplicada (LETA), Centro de Toxinas, Imuno-Resposta e Sinalização Celular (CeTICS/CEPID) - Instituto Butantan, São Paulo, Brazil
| | - D C Serdan
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, Brazil
| | - A Florez-Ariza
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, Brazil
| | - E Chaparro
- Laboratório de Toxinologia Aplicada (LETA), Centro de Toxinas, Imuno-Resposta e Sinalização Celular (CeTICS/CEPID) - Instituto Butantan, São Paulo, Brazil.,Interunidades em Biotecnologia, Universidade de São Paulo, São Paulo, Brazil
| | - M Y Nishiyama
- Laboratório de Toxinologia Aplicada (LETA), Centro de Toxinas, Imuno-Resposta e Sinalização Celular (CeTICS/CEPID) - Instituto Butantan, São Paulo, Brazil
| | - A Cassago
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, Brazil
| | - I L M Junqueira-de-Azevedo
- Laboratório de Toxinologia Aplicada (LETA), Centro de Toxinas, Imuno-Resposta e Sinalização Celular (CeTICS/CEPID) - Instituto Butantan, São Paulo, Brazil
| | - M van Heel
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, Brazil
| | - P I Silva
- Laboratório de Toxinologia Aplicada (LETA), Centro de Toxinas, Imuno-Resposta e Sinalização Celular (CeTICS/CEPID) - Instituto Butantan, São Paulo, Brazil.,Interunidades em Biotecnologia, Universidade de São Paulo, São Paulo, Brazil
| | - R V Portugal
- Laboratório Nacional de Nanotecnologia (LNNano), Centro Nacional de Pesquisa em Energia e Materiais (CNPEM), CEP 13083-970, Campinas, Brazil
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Cunningham M, Laino A, Romero S, Fernando Garcia C. Arachnid Hemocyanins. Subcell Biochem 2020; 94:219-231. [PMID: 32189301 DOI: 10.1007/978-3-030-41769-7_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hemocyanin (Hc), a copper-containing extracellular multimeric protein, is the major protein component of hemolymph in different arachnid groups. Hc possesses 7 or 8 very well-characterized types of monomers with molecular weights ranging from 70 to 85 kDa, organized in hexamers or multiple of hexamers. The present chapter compiles the existing data with relation to the function of this protein in the arachnids. Hc has as main function the reversible transport of O2, but it shows many secondary though not less important functions. With reference to this, it has been described that Hc can transport hydrophobic molecules (lipid-derived hormones and lipids) to the different organs, having a key role in the lipid transport system. In arachnids, like in other arthropods and invertebrates, Hc has phenoloxidase function which is related to different metabolic processes such as melanin formation and defense against pathogens. In addition, Hc has additional defensive functions since it can serve as precursor for the production of antimicrobial peptides. In short, the evolution of this protein has led to the development of multiple functions essential for organisms possessing this protein.
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Affiliation(s)
- Monica Cunningham
- INIBIOLP (CONICET-UNLP) - Facultad de Ciencias Médicas, UNLP, Calles 60 y 120, 1900, La Plata, Argentina.
| | - Aldana Laino
- INIBIOLP (CONICET-UNLP) - Facultad de Ciencias Médicas, UNLP, Calles 60 y 120, 1900, La Plata, Argentina
| | - Sofia Romero
- INIBIOLP (CONICET-UNLP) - Facultad de Ciencias Médicas, UNLP, Calles 60 y 120, 1900, La Plata, Argentina
| | - C Fernando Garcia
- INIBIOLP (CONICET-UNLP) - Facultad de Ciencias Médicas, UNLP, Calles 60 y 120, 1900, La Plata, Argentina
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Gautam UK, Bohatá A, Shaik HA, Zemek R, Kodrík D. Adipokinetic hormone promotes infection with entomopathogenic fungus Isaria fumosorosea in the cockroach Periplaneta americana. Comp Biochem Physiol C Toxicol Pharmacol 2020; 229:108677. [PMID: 31783176 DOI: 10.1016/j.cbpc.2019.108677] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/07/2019] [Accepted: 11/23/2019] [Indexed: 01/29/2023]
Abstract
The adipokinetic hormones (AKHs) are known to be involved in insect immunity, thus their role in the cockroach Periplaneta americana infected with the entomopathogenic fungus Isaria fumosorosea was examined in this study. The application of I. fumosorosea resulted in a significant increase in both Akh gene expression and AKH peptide levels. Further, co-application of I. fumosorosea with Peram-CAH-II significantly enhanced cockroach mortality compared with the application of I. fumosorosea alone. The mechanism of AKH action could involve metabolic stimulation, which was indicated by a significant increase in carbon dioxide production; this effect can increase the turnover and thus efficacy of toxins produced by I. fumosorosea in the cockroach's body. I. fumosorosea treatment resulted in a significant decrease in haemolymph nutrients (carbohydrates and lipids), but co-application with Peram-CAH-II restored control level of lipids or even further increased the level of carbohydrates. Such nutritional abundance could enhance the growth and development of I. fumosorosea. Further, both I. fumosorosea and Peram-CAH-II probably affected oxidative stress: I. fumosorosea alone curbed the activity of catalase in the cockroach's gut, but co-application with Peram-CAH-II stimulated it. Interestingly, the hormone alone had no effect on catalase activity. Taken together, the results of the present study demonstrate the interactions between the fungus and AKH activity; understanding this relationship could provide insight into AKH action and may have practical implications for insect pest control in the future.
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Affiliation(s)
- Umesh Kumar Gautam
- Institute of Entomology, Biology Centre, CAS, Branišovská 31, 370 05 České Budějovice, Czech Republic; Faculty of Science, University of South Bohemia, Branišovská 31, 370 05 České Budějovice, Czech Republic
| | - Andrea Bohatá
- Faculty of Agriculture, University of South Bohemia, Studentská 1668, 370 05 České Budějovice, Czech Republic
| | - Haq Abdul Shaik
- Institute of Entomology, Biology Centre, CAS, Branišovská 31, 370 05 České Budějovice, Czech Republic
| | - Rostislav Zemek
- Institute of Entomology, Biology Centre, CAS, Branišovská 31, 370 05 České Budějovice, Czech Republic
| | - Dalibor Kodrík
- Institute of Entomology, Biology Centre, CAS, Branišovská 31, 370 05 České Budějovice, Czech Republic; Faculty of Science, University of South Bohemia, Branišovská 31, 370 05 České Budějovice, Czech Republic.
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58
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Stączek S, Zdybicka-Barabas A, Pleszczyńska M, Wiater A, Cytryńska M. Aspergillus niger α-1,3-glucan acts as a virulence factor by inhibiting the insect phenoloxidase system. J Invertebr Pathol 2020; 171:107341. [DOI: 10.1016/j.jip.2020.107341] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 02/06/2020] [Accepted: 02/08/2020] [Indexed: 12/24/2022]
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Shedding Light on the Antimicrobial Peptide Arsenal of Terrestrial Isopods: Focus on Armadillidins, a New Crustacean AMP Family. Genes (Basel) 2020; 11:genes11010093. [PMID: 31947541 PMCID: PMC7017220 DOI: 10.3390/genes11010093] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 11/30/2022] Open
Abstract
In crustaceans, antimicrobial peptides (AMPs) are clustered into four major groups according to their amino acid composition and structure: (1) single-domain peptides containing cysteine residues such as anti-lipopolysaccharide-factor (ALF), (2) multi-domain or chimeric AMPs such as crustins, (3) non-conventional AMPs, and (4) linear single-domain AMPs. The majority of AMPs has been described in commercially exploited crustaceans, particularly decapods living in aquatic environments (crab, shrimp, lobster, and crayfish). Here, we aimed at establishing the AMPs repertoire of terrestrial isopods (Oniscidea), an original suborder of crustaceans adapted to life outside of the aquatic environment. Using transcriptomic data from 21 species, we identified 110 ALF and 73 crustin sequences. We also characterized the full-length sequence of armadillidins from 17 species, similar to the AMP previously described in the terrestrial isopod Armadillidium vulgare. Furthermore, we tested the antimicrobial activity of three armadillidin peptides characterized from three distantly related species. This analysis revealed similar activity spectra against pathogens, despite extensive structural variation among the tested peptides. In addition to conventional crustacean AMPs, our work highlights armadillidins as a new and independent family of AMPs specific to the Oniscidea, thus opening new perspectives concerning the study of the immune system of terrestrial isopods.
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Becchimanzi A, Avolio M, Bostan H, Colantuono C, Cozzolino F, Mancini D, Chiusano ML, Pucci P, Caccia S, Pennacchio F. Venomics of the ectoparasitoid wasp Bracon nigricans. BMC Genomics 2020; 21:34. [PMID: 31924169 PMCID: PMC6954513 DOI: 10.1186/s12864-019-6396-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Accepted: 12/12/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Venom is one of the most important sources of regulation factors used by parasitic Hymenoptera to redirect host physiology in favour of the developing offspring. This has stimulated a number of studies, both at functional and "omics" level, which, however, are still quite limited for ectophagous parasitoids that permanently paralyze and suppress their victims (i.e., idiobiont parasitoids). RESULTS Here we present a combined transcriptomic and proteomic study of the venom of the generalist idiobiont wasp Bracon nigricans, an ectophagous larval parasitoid of different lepidopteran species, for which we recently described the host regulation strategy and the functional role of the venom in the induction of physiological changes in parasitized hosts. The experimental approach used led to the identification of the main components of B. nigricans venom involved in host regulation. Enzymes degrading lipids, proteins and carbohydrates are likely involved in the mobilization of storage nutrients from the fat body and may concurrently be responsible for the release of neurotoxic fatty acids inducing paralysis, and for the modulation of host immune responses. CONCLUSION The present work contributes to fill the gap of knowledge on venom composition in ectoparasitoid wasps, and, along with our previous physiological study on this species, provides the foundation on which to develop a functional model of host regulation, based both on physiological and molecular data. This paves the way towards a better understanding of parasitism evolution in the basal lineages of Hymenoptera and to the possible exploitation of venom as source of bioinsecticidal molecules.
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Affiliation(s)
- Andrea Becchimanzi
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA Italy
| | - Maddalena Avolio
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA Italy
| | - Hamed Bostan
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA Italy
- Present address: Plants for Human Health Institute, North Carolina State University, Kannapolis, NC USA
| | - Chiara Colantuono
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA Italy
- Present address: Infrastrutture di Ricerca per le Risorse Biologiche Marine, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Napoli, Italy
| | - Flora Cozzolino
- Department of Chemical Sciences and CEINGE Biotecnologie Avanzate, University of Napoli Federico II, Napoli, Italy
| | - Donato Mancini
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA Italy
| | - Maria Luisa Chiusano
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA Italy
| | - Pietro Pucci
- Department of Chemical Sciences and CEINGE Biotecnologie Avanzate, University of Napoli Federico II, Napoli, Italy
| | - Silvia Caccia
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA Italy
| | - Francesco Pennacchio
- Department of Agricultural Sciences, University of Napoli Federico II, Portici, NA Italy
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Abstract
The copper-containing hemocyanins are proteins responsible for the binding, transportation and storage of dioxygen within the blood (hemolymph) of many invertebrates. Several additional functions have been attributed to both arthropod and molluscan hemocyanins, including (but not limited to) enzymatic activity (namely phenoloxidase), hormone transport, homeostasis (ecdysis) and hemostasis (clot formation). An important secondary function of hemocyanin involves aspects of innate immunity-such as acting as a precursor of broad-spectrum antimicrobial peptides and microbial/viral agglutination. In this chapter, we present the reader with an up-to-date synthesis of the known functions of hemocyanins and the structural features that facilitate such activities.
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Affiliation(s)
- Christopher J Coates
- Department of Biosciences, College of Science, Swansea University, Swansea, Wales, SA2 8PP, UK.
| | - Elisa M Costa-Paiva
- Departamento de Zoologia, Instituto Biociências, Universidade de São Paulo, São Paulo, Brazil
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62
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Abstract
Lipoproteins mediate the transport of apolar lipids in the hydrophilic environment of physiological fluids such as the vertebrate blood and the arthropod hemolymph. In this overview, we will focus on the hemolymph lipoproteins in Crustacea that have received most attention during the last years: the high density lipoprotein/β-glucan binding proteins (HDL-BGBPs), the vitellogenins (VGs), the clotting proteins (CPs) and the more recently discovered large discoidal lipoproteins (dLPs). VGs are female specific lipoproteins which supply both proteins and lipids as storage material for the oocyte for later use by the developing embryo. Unusual within the invertebrates, the crustacean yolk proteins-formerly designated VGs-are more related to the ApoB type lipoproteins of vertebrates and are now termed apolipocrustaceins. The CPs on the other hand, which are present in both sexes, are related to the (sex specific) VGs of insects and vertebrates. CPs serve in hemostasis and wound closure but also as storage proteins in the oocyte. The HDL-BGBPs are the main lipid transporters, but are also involved in immune defense. Most crustacean lipoproteins belong to the family of the large lipid transfer proteins (LLTPs) such as the intracellular microsomal triglyceride transfer protein, the VGs, CPs and the dLPs. In contrast, the HDL-BGBPs do not belong to the LLTPs and their relationship with other lipoproteins is unknown. However, they originate from a common precursor with the dLPs, whose functions are as yet unknown. The majority of lipoprotein studies have focused on decapod crustaceans, especially shrimps, due to their economic importance. However, we will present evidence that the HDL-BGBPs are restricted to the decapod crustaceans which raises the question as to the main lipid transporting proteins of the other crustacean groups. The diversity of crustaceans lipoproteins thus appears to be more complex than reflected by the present state of knowledge.
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Affiliation(s)
- Ulrich Hoeger
- Institut für Molekulare Physiologie, Johannes Gutenberg-Universität, 55099, Mainz, Germany.
| | - Sven Schenk
- MAX F. PERUTZ LABORATORIES, Vienna Biocenter (VBC), Dr. Bohr-Gasse 9/4, 1030, Vienna, Austria
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63
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Jin X, Li W, Xu M, Zhu Y, Zhou Y, Wang Q. Transcriptome-wide analysis of immune responses in Eriocheir sinensis hemocytes after challenge with different microbial derivatives. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 101:103457. [PMID: 31362028 DOI: 10.1016/j.dci.2019.103457] [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: 04/10/2019] [Revised: 07/26/2019] [Accepted: 07/26/2019] [Indexed: 06/10/2023]
Abstract
Knowledge about how Eriocheir sinensis interacts with microorganisms in its ambient environment is still lacking. Using RNA-Seq, we determined the most conserved genes and pathways compared with other animals and detected highly-induced immune genes in E. sinensis hemocytes post-in vivo challenge with different microbial derivatives. In total, 33.2 million high-quality reads were generated and assembled into 177,679 contigs. Completeness assessment and functional annotation were performed. Lipopolysaccharide, peptidoglycan, and β-1, 3-glucan stimulation induced 373, 173, and 108 differentially expressed (DE) transcripts, respectively. GO terms such as 'G-protein-coupled receptor binding', 'negative regulation of mitogen-activated protein kinase activity', and 'positive regulation of blood circulation' were enriched in the DE transcripts. Quantitative real-time PCR validated the data for selected genes. Our data contribute to understanding the immune defense mechanism in E. sinensis and the development of the innate immune system, thereby providing insights into disease control and prevention in aquaculture.
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Affiliation(s)
- Xingkun Jin
- Institute of Marine Biology, School of Oceanography, Hohai University, Nanjing, 210098, China; Department of Biology, School of Life Science, East China Normal University, Shanghai, 200241, China.
| | - Weiwei Li
- Department of Biology, School of Life Science, East China Normal University, Shanghai, 200241, China.
| | - Minjie Xu
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200433, China; Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, 201203, China.
| | - Youting Zhu
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, 201306, China.
| | - Yan Zhou
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, 200433, China; Shanghai-MOST Key Laboratory of Health and Disease Genomics, Chinese National Human Genome Center at Shanghai, Shanghai, 201203, China.
| | - Qun Wang
- Department of Biology, School of Life Science, East China Normal University, Shanghai, 200241, China.
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El Moussawi L, Nakhleh J, Kamareddine L, Osta MA. The mosquito melanization response requires hierarchical activation of non-catalytic clip domain serine protease homologs. PLoS Pathog 2019; 15:e1008194. [PMID: 31765430 PMCID: PMC6901238 DOI: 10.1371/journal.ppat.1008194] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 12/09/2019] [Accepted: 11/05/2019] [Indexed: 12/20/2022] Open
Abstract
Serine protease cascades regulate important insect immune responses namely melanization and Toll pathway activation. An important component of these cascades are clip-domain serine protease homologs (cSPHs), which are non-catalytic, but essential for activating the enzyme prophenoloxidase (PPO) in the melanization response during septic infections. The activation of cSPHs requires their proteolytic cleavage, yet factors that control their activation and the complexity of their interactions within these cascades remain unclear. Here, we report the identification of CLIPA28 as a novel immune-related cSPH in the malaria vector Anopheles gambiae. Functional genetic analysis using RNA interference (RNAi) revealed that CLIPA28 is essential for the melanization of Plasmodium berghei parasites in refractory mosquitoes, and for mosquito resistance to fungal infections. We further show, using combined biochemical and genetic approaches, that CLIPA28 is member of a network of at least four cSPHs, whereby members are activated in a hierarchical manner following septic infections. Depletion of the complement-like protein TEP1 abolished the activation of this network after septic infections, whereas, depletion of the serine protease inhibitor 2 (SRPN2) triggered enhanced network activation, even in naïve mosquitoes, culminating in a dramatic reduction in cSPHs hemolymph levels, which paralleled that of PPO. Our data suggest that cSPHs are engaged in complex and multilayered interactions within serine protease cascades that regulate melanization, and identify TEP1 and SRPN2 as two master regulators of the cSPH network. Melanization is a spectacular immune response of insects that culminates in the deposition of melanin on microbial surfaces leading to their death. Despite more than half a century of investigation of this immune reaction in several insect models, important knowledge gaps, specifically concerning the regulation of this response, remain, especially that its output is tightly regulated by complex genetic and biochemical interactions between members of structurally diverse immune gene families. Here, we identify a new hemolymph protein that is involved in the melanization of malaria parasites and show that it forms, together with other proteins of the same gene family, a network, whereby members are activated in an orderly manner during mosquito septic infections. Furthemore, we show that this network is controlled by two structurally distinct immune proteins which act as master regulators of its activation. Dissecting the complexity of the regulatory mechanisms mediating insect melanization responses, may facilitate fine manipulation of mosquito immunity to reduce vectorial capacity.
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Affiliation(s)
- Layla El Moussawi
- Department of Biology, American University of Beirut, Beirut, Lebanon
| | - Johnny Nakhleh
- Department of Biology, American University of Beirut, Beirut, Lebanon
| | | | - Mike A. Osta
- Department of Biology, American University of Beirut, Beirut, Lebanon
- * E-mail:
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65
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Bao Y, Marini S, Tamura T, Kamada M, Maegawa S, Hosokawa H, Song J, Akutsu T. Toward more accurate prediction of caspase cleavage sites: a comprehensive review of current methods, tools and features. Brief Bioinform 2019; 20:1669-1684. [PMID: 29860277 PMCID: PMC6917222 DOI: 10.1093/bib/bby041] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/16/2018] [Indexed: 12/20/2022] Open
Abstract
As one of the few irreversible protein posttranslational modifications, proteolytic cleavage is involved in nearly all aspects of cellular activities, ranging from gene regulation to cell life-cycle regulation. Among the various protease-specific types of proteolytic cleavage, cleavages by casapses/granzyme B are considered as essential in the initiation and execution of programmed cell death and inflammation processes. Although a number of substrates for both types of proteolytic cleavage have been experimentally identified, the complete repertoire of caspases and granzyme B substrates remains to be fully characterized. To tackle this issue and complement experimental efforts for substrate identification, systematic bioinformatics studies of known cleavage sites provide important insights into caspase/granzyme B substrate specificity, and facilitate the discovery of novel substrates. In this article, we review and benchmark 12 state-of-the-art sequence-based bioinformatics approaches and tools for caspases/granzyme B cleavage prediction. We evaluate and compare these methods in terms of their input/output, algorithms used, prediction performance, validation methods and software availability and utility. In addition, we construct independent data sets consisting of caspases/granzyme B substrates from different species and accordingly assess the predictive power of these different predictors for the identification of cleavage sites. We find that the prediction results are highly variable among different predictors. Furthermore, we experimentally validate the predictions of a case study by performing caspase cleavage assay. We anticipate that this comprehensive review and survey analysis will provide an insightful resource for biologists and bioinformaticians who are interested in using and/or developing tools for caspase/granzyme B cleavage prediction.
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Affiliation(s)
- Yu Bao
- Bioinformatics Center, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Simone Marini
- Department of Computational Medicine and Bioinformatics, University of Michigan, 1241 E. Catherine St., 5940 Buhl, Ann Arbor 48109-5618, USA
| | - Takeyuki Tamura
- Bioinformatics Center, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Mayumi Kamada
- Graduate School of Medicine, Kyoto University, Sakyo-ku, Kyoto 606-8507, Japan
| | - Shingo Maegawa
- Graduate School of Informatics, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Hiroshi Hosokawa
- Graduate School of Informatics, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Jiangning Song
- Monash Biomedicine Discovery Institute, Monash Centre for Data Science and ARC Centre of Excellence in Advance Molecular Imaging, Monash University, Melbourne, VIC 3800, Australia
| | - Tatsuya Akutsu
- Bioinformatics Center, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan
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66
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Peng M, Li Z, Niu D, Liu X, Dong Z, Li J. Complement factor B/C2 in molluscs regulates agglutination and illuminates evolution of the Bf/C2 family. FASEB J 2019; 33:13323-13333. [PMID: 31550175 DOI: 10.1096/fj.201901142rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Complement factor B/C2 family (Bf/C2F) proteins are core complement system components in vertebrates that are absent in invertebrates and have been lost by numerous species, raising evolutionary questions. At least 3 duplication events have occurred from Cnidaria (ancestor) to mammals. Type II Bf/C2 genes appeared during separation of Proterostomia and Deuterostomes. The second event occurred during separation of vertebrates and invertebrates, yielding type II-2 Bf/C2. The third event occurred when jawed and jawless fish were separated, eventually producing Bf and C2 genes. Herein, we report the second mollusc Sinonovacula constricta Bf/C2-type gene (ScBf). ScBf is similar to Ruditapes decussatus Bf-like because both lack the first complement control protein module at the N terminus present in mammalian Bf/C2 proteins. Uniquely, the Ser protease (SP) module at the C terminus of ScBf is ∼50 aa longer than in other complement factor B/C2-type (Bf/C2T) proteins, and is Glu-rich. Bf/C2T proteins in molluscs lack the catalytic Ser in the SP module. Surprisingly, ScBf regulates rabbit erythrocyte agglutination, during which it is localized on the erythrocyte surface. Thus, ScBf may mediate the agglutination cascade and may be an upstream regulator of this process. Our findings provide new insight into the origin of the Bf/C2F.-Peng, M., Li, Z., Niu, D., Liu, X., Dong, Z., Li, J. Complement factor B/C2 in molluscs regulates agglutination and illuminates evolution of the Bf/C2 family.
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Affiliation(s)
- Maoxiao Peng
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Zhi Li
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Donghong Niu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,National Demonstration Centre for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China.,Co-Innovation Centre of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, China; and
| | - Xiaojun Liu
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Zhiguo Dong
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,Co-Innovation Centre of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, China; and
| | - Jiale Li
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Shanghai, China.,College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.,Co-Innovation Centre of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, Lianyungang, China; and
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67
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Qin Z, Sarath Babu V, Lin H, Dai Y, Kou H, Chen L, Li J, Zhao L, Lin L. The immune function of prophenoloxidase from red swamp crayfish (Procambarus clarkii) in response to bacterial infection. FISH & SHELLFISH IMMUNOLOGY 2019; 92:83-90. [PMID: 31059813 DOI: 10.1016/j.fsi.2019.05.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 05/03/2019] [Accepted: 05/03/2019] [Indexed: 06/09/2023]
Abstract
Prophenoloxidase (proPO) is the zymogen form of phenoloxidase (PO), a key enzyme in melanization cascade that has been co-opted in invertebrate immune reactions. There have been reported that proPO plays many essential roles in the crustacean immune system. However, little is known about the function of proPO from red swamp crayfish (Procambarus clarkii) which is an important cultured species worldwide. Here, we cloned and expressed proPO gene from red swamp crayfish (PcproPO). Subsequently, specific antibody against PcproPO was generated. The immune function of PcproPO was further characterized in vitro and in vivo. The results showed that the expression of PcproPO mRNA could be significantly up-regulated during the challenge of Gram-positive-negative (Vibrio parahaemolyticus) and Gram-positive-positive bacterial (Staphylococcus aureus). Furthermore, the purified recombinant PcproPO protein had a strong affinity binding to both bacteria and polysaccharides. In vivo knockdown of PcproPO could significantly reduce the crayfish bacterial clearance ability, resulting in the higher mortality of the crayfish during V. parahaemolyticus infection. In addition, in vitro knockdown of PcproPO in the hemocytes significantly reduced the phenoloxidase (PO) activity and the bacterial clearance ability, indicating that PcproPO might involve in hemocyte-mediated melanization. Our results will shed a new light on the immune function of PcproPO in the crayfish.
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Affiliation(s)
- Zhendong Qin
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong province, 510225, China
| | - V Sarath Babu
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong province, 510225, China
| | - Hanzuo Lin
- Faculty of Arts, University of British Columbia, Vancouver, British Columbia, V6T1W9, Canada
| | - Yunjia Dai
- National Key Laboratory of Crop Genetic Improvement and National Centre of Plant Gene Research, Huazhong Agricultural University, Wuhan, China
| | - Hongyan Kou
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong province, 510225, China
| | - Liehuan Chen
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong province, 510225, China
| | - Jun Li
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong province, 510225, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong province, 266071, PR China; School of Biological Sciences, Lake Superior State University, Sault Ste. Marie, MI, 49783, USA
| | - Lijuan Zhao
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong province, 510225, China.
| | - Li Lin
- Guangdong Provincial Water Environment and Aquatic Products Security Engineering Technology Research Center, Guangzhou Key Laboratory of Aquatic Animal Diseases and Waterfowl Breeding, Guangdong Provincial Key Laboratory of Waterfowl Healthy Breeding, College of Animal Sciences and Technology, Zhongkai University of Agriculture and Engineering, Guangzhou, Guangdong province, 510225, China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, Shandong province, 266071, PR China.
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68
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Liu Y, Song Q, Li D, Zou R, Zhang Y, Hao S, Geng X, Sun J. A novel complement C3 like gene (Lv-C3L) from Litopenaeus vannamei with bacteriolytic and hemolytic activities and its role in antiviral immune response. FISH & SHELLFISH IMMUNOLOGY 2019; 91:376-387. [PMID: 31125666 DOI: 10.1016/j.fsi.2019.05.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Revised: 05/15/2019] [Accepted: 05/20/2019] [Indexed: 06/09/2023]
Abstract
As a core component of the complement system, complement component 3 (C3) plays a central role in the opsonization of pathogens, immune defense and immune regulation in the mammalian for its activation is required to trigger classical as well as alternative complement pathways. However, the molecular mechanism underlying C3 activation in invertebrates remains unknown. Several C3 genes have been characterized in invertebrates but very few in crustacean. To understand the molecular characterization and immunological functions of shrimp C3, we characterized a novel complement C3 like gene (designated Lv-C3L) with full-length cDNA sequence identified from pacific white shrimp Litopenaeus vannamei in the present study. The full length cDNA of Lv-C3L sequence was 4769 bp (GenBank accession number: MH638255) containing a 4077 bp open reading frame (ORF), which encodes 1358 amino acids contained a putative signal peptide of 17 amino acids. Six model motifs of C3 were found in Lv-C3L including typical A2M domain, a highly conserved thioester region (GCGEQ) and proteolytic cleavage site of ANATO. In addition to typical conservative domains, Lv-C3L also contains a particular GLN-rich region which might be involved in the protein interaction and transcriptional activation. The transcripts of Lv-C3L were mainly detected in hemocytes and gill which might be involved in defense response. At 36 h post V.parahaemolyticus and B.thuringensis infection, the expression level of Lv-C3L gene in hemocytes were significantly upregulated. At 48 h and 72 h post WSSV infection, the expression level of Lv-C3L gene in hemocytes and gill were significantly upregulated. These results indicated that Lv-C3L gene play a pivotal role in innate immune responses to the WSSV and G+/G- bacterial infection. The obvious immune function of Lv-C3L was described as an effective membrane rupture in bacteriolytic and hemolytic activities on V.parahaemolyticus, V.anguillarum and rabbit erythrocytes. Combining with WSSV copy number, WSSV-VP28 gene expression profile and shrimp cumulative mortality analysis, RNAi knockdown of Lv-C3L gene could obviously promote the in vivo propagation of WSSV in shrimp. This is the first report in crustaceans that Lv-C3L, as a key complement like components, is involved in shrimp antiviral immune response. It is speculated that complicated complement response cascade may exist in shrimp. These results collectively indicated that the complement pathway in shrimp might play an important protective role against pathogenic infection and activation of complement pathway including C3 could restrict the propagation of WSSV.
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Affiliation(s)
- Yichen Liu
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Qiaozhen Song
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Danlei Li
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Ruifeng Zou
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Yichen Zhang
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Shaoyan Hao
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China
| | - Xuyun Geng
- Tianjin Fisheries Research Institute, Tianjin, 300221, China
| | - Jinsheng Sun
- Tianjin Key Laboratory of Animal and Plant Resistance/College of Life Sciences, Tianjin Normal University, Tianjin, 300387, China.
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Pollock FJ, Lamb JB, van de Water JAJM, Smith HA, Schaffelke B, Willis BL, Bourne DG. Reduced diversity and stability of coral-associated bacterial communities and suppressed immune function precedes disease onset in corals. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190355. [PMID: 31312497 PMCID: PMC6599770 DOI: 10.1098/rsos.190355] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 05/08/2019] [Indexed: 05/28/2023]
Abstract
Disease is an emerging threat to coral reef ecosystems worldwide, highlighting the need to understand how environmental conditions interact with coral immune function and associated microbial communities to affect holobiont health. Increased coral disease incidence on reefs adjacent to permanently moored platforms on Australia's Great Barrier Reef provided a unique case study to investigate environment-host-microbe interactions in situ. Here, we evaluate coral-associated bacterial community (16S rRNA amplicon sequencing), immune function (protein-based prophenoloxidase-activating system), and water quality parameters before, during and after a disease event. Over the course of the study, 31% of tagged colonies adjacent to platforms developed signs of white syndrome (WS), while all control colonies on a platform-free reef remained visually healthy. Corals adjacent to platforms experienced significant reductions in coral immune function. Additionally, the corals at platform sites that remained visually healthy throughout the study had reduced bacterial diversity compared to healthy colonies at the platform-free site. Interestingly, prior to the observation of macroscopic disease, corals that would develop WS had reduced bacterial diversity and significantly greater community heterogeneity between colonies compared to healthy corals at the same location. These results suggest that activities associated with offshore marine infrastructure impacts coral immunocompetence and associated bacterial community, which affects the susceptibility of corals to disease.
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Affiliation(s)
- F. Joseph Pollock
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
- Australian Institute of Marine Science, Townsville, Queensland, Australia
- AIMS@JCU, Australian Institute of Marine Science and James Cook University, Townsville, Queensland, Australia
- Department of Ecology and Evolutionary Biology, Pennsylvania State University, University Park, PA, USA
| | - Joleah B. Lamb
- Department of Ecology and Evolutionary Biology, University of California, Irvine, CA, USA
| | - Jeroen A. J. M. van de Water
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
- Australian Institute of Marine Science, Townsville, Queensland, Australia
- AIMS@JCU, Australian Institute of Marine Science and James Cook University, Townsville, Queensland, Australia
- Centre Scientifique de Monaco, 8 Quai Antoine 1er, Monaco, Monaco
| | - Hillary A. Smith
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
| | - Britta Schaffelke
- Australian Institute of Marine Science, Townsville, Queensland, Australia
| | - Bette L. Willis
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
- ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, Queensland, Australia
- AIMS@JCU, Australian Institute of Marine Science and James Cook University, Townsville, Queensland, Australia
| | - David G. Bourne
- College of Science and Engineering, James Cook University, Townsville, Queensland, Australia
- Australian Institute of Marine Science, Townsville, Queensland, Australia
- AIMS@JCU, Australian Institute of Marine Science and James Cook University, Townsville, Queensland, Australia
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70
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Day RD, Fitzgibbon QP, Gardner C. The impact of holding stressors on the immune function and haemolymph biochemistry of Southern Rock Lobsters (Jasus edwardsii). FISH & SHELLFISH IMMUNOLOGY 2019; 89:660-671. [PMID: 30902723 DOI: 10.1016/j.fsi.2019.03.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 02/06/2019] [Accepted: 03/16/2019] [Indexed: 06/09/2023]
Abstract
Lobsters are fished world-wide due to their status as a high value, luxury seafood. A large proportion of the product is sold via live export, with lobsters subject to a range of stressors during holding post-capture. Improving the current understanding of the immune response to these stressors assists in improving efficiency and reducing loss in the chain between capture and consumption. In this study, the immune status of four treatment groups of Southern Rock Lobster (Jasus edwardsii) were studied: controls recently landed from a fishing boat, lobsters displaying advanced shell necrosis, lobsters in an unexplained moribund state and lobsters held in a processing facility for 10 weeks in standard conditions (i.e. high density, fasted). A total of 15 immune parameters and 19 haemolymph biochemical parameters were assayed. Phenoloxidase activity was only sporadically observed in haemocyte lysate and was consistently observed at a low level in the plasma with no difference between treatments for either. Haemocyte lysate prophenoloxidase activity was detected in most individuals, with no differences found between treatments. Prophenoloxidase in the plasma showed the highest level of activity, with the shell necrosis treatment demonstrating an elevated activity level relative to the other three treatments. Cell viability was not affected in any treatment. Lobsters with shell necrosis had a reduced capacity for phagocytosis, a significantly higher total haemocyte count, fewer hyalinocytes and more granulocytes and semigranulocytes. Fasted lobsters showed an opposite shift, with significantly more hyalinocytes compared to the other treatments and very few granulocytes and semigranulocytes. The balance of a range electrolytes, minerals metabolites and enzymes were affected in shell necrosis and fasted treatments, raising them as potential markers for immunocompromised lobsters. Multivariate analysis of all assayed parameters showed that all individuals in the necrosis treatment showed a similar, distinct immune response and that the fasted treatment, along with one control and one moribund individual, showed a separate intermediate response. The remainder of the control and moribund lobsters demonstrated a distinct "non-response" in comparison. These results offer a characterisation of the physiological response to common challenges during post-capture holding of rock lobsters, demonstrating the differential response to pathogenic bacterial infection, long term fasting, non-specific moribundity and the stress of capture and transport.
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Affiliation(s)
- Ryan D Day
- Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia.
| | - Quinn P Fitzgibbon
- Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia
| | - Caleb Gardner
- Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, 7001, Australia
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Gorbushin AM. Derivatives of the lectin complement pathway in Lophotrochozoa. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 94:35-58. [PMID: 30682446 DOI: 10.1016/j.dci.2019.01.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/20/2019] [Accepted: 01/21/2019] [Indexed: 05/16/2023]
Abstract
A plethora of non-overlapping immune molecular mechanisms in metazoans is the most puzzling issue in comparative immunobiology. No valid evolutionary retrospective on these mechanisms has been developed. In this study, we aimed to reveal the origin and evolution of the immune complement-like system in Lophotrochozoa. For this, we analyzed publicly available transcriptomes of prebilaterian and lophotrochozoan species, mapping lineage-specific molecular events on the phylogenetic tree. We found that there were no orthologs of mannose-binding lectin (MBL) and ficolins (FCN) in Lophotrochozoa but C1q-like proteins (C1qL), bearing both a collagen domain and a globular C1q domain, were omnipresent in them. This suggests that among all complement-like activators the C1qL-specific domain architecture was an evolutionarily first. Two novel protostomian MASP-Related Molecules, MReM1 and MReM2, might hypothetically compensate for the loss of a prebilaterian MASP-orthologous gene and act in complex with C1qL and C1qDC as a "proto-activator" of an ancient "proto-complement". We proposed a new model of the complement evolution predicting that numerous lineage-specific complement-like systems should have evolved from a stem "antique" molecular complex. First evolved in the common ancestor of coelomic animals, the "antique" humoral complex consisted of a TEP molecule, the common ancestor of TEP-associated proteases (C2/Bf/Сf/Lf), the common ancestor of MASP-like proteases (MASP/C1r/C1s, MReM1/MReM2) and multimeric recognition proteins (C1q-, MBL- and FCN-homologs). Further evolutionary specialization and expansion of the complex was independent and lineage-specific, examples being the mammalian complement system and the Apogastropoda complement-like complex. The latter includes an impressive array of multimeric recognition proteins, the variable immunoglobulin and lectin domain containing molecules (VIgL), homologous to C1q, MBL, FCN and other lectins. Four novel polymorphic subfamilies of VIgLs were found to be expressed in Apogastropoda: C1q-related proteins (QREP), zona pellucida-related proteins (ZREP), Scavenger Receptor Cys-Rich-related proteins (SREP) and HPA-lectin related proteins (HREP). The transcriptional response of fibrinogen-related proteins of VIgL family (LlFREP), LlQREP and LlSREP to infestation of common periwinkle, Littorina littorea, with digenean parasite Himasthla elongata correlates with that of LlMReM1, supporting the model suggested in this study.
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Affiliation(s)
- Alexander M Gorbushin
- Sechenov Institute of Evolutionary Physiology and Biochemistry (IEPhB RAS), Saint-Petersburg, Russia.
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72
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Kutsukake M, Moriyama M, Shigenobu S, Meng XY, Nikoh N, Noda C, Kobayashi S, Fukatsu T. Exaggeration and cooption of innate immunity for social defense. Proc Natl Acad Sci U S A 2019; 116:8950-8959. [PMID: 30988178 PMCID: PMC6500135 DOI: 10.1073/pnas.1900917116] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Social insects often exhibit striking altruistic behaviors, of which the most spectacular ones may be self-destructive defensive behaviors called autothysis, "self-explosion," or "suicidal bombing." In the social aphid Nipponaphis monzeni, when enemies damage their plant-made nest called the gall, soldier nymphs erupt to discharge a large amount of body fluid, mix the secretion with their legs, and skillfully plaster it over the plant injury. Dozens of soldiers come out, erupt, mix, and plaster, and the gall breach is promptly sealed with the coagulated body fluid. What molecular and cellular mechanisms underlie the self-sacrificing nest repair with body fluid for the insect society? Here we demonstrate that the body cavity of soldier nymphs is full of highly differentiated large hemocytes that contain huge amounts of lipid droplets and phenoloxidase (PO), whereas their hemolymph accumulates huge amounts of tyrosine and a unique repeat-containing protein (RCP). Upon breakage of the gall, soldiers gather around the breach and massively discharge the body fluid. The large hemocytes rupture and release lipid droplets, which promptly form a lipidic clot, and, concurrently, activated PO converts tyrosine to reactive quinones, which cross-link RCP and other macromolecules to physically reinforce the clot to seal the gall breach. Here, soldiers' humoral and cellular immune mechanisms for wound sealing are extremely up-regulated and utilized for colony defense, which provides a striking case of direct evolutionary connection between individual immunity and social immunity and highlights the importance of exaggeration and cooption of preexisting traits to create evolutionary novelties.
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Affiliation(s)
- Mayako Kutsukake
- Bioproduction Research Institute, National Institute of Advanced Science and Technology, 305-8566 Tsukuba, Japan;
| | - Minoru Moriyama
- Bioproduction Research Institute, National Institute of Advanced Science and Technology, 305-8566 Tsukuba, Japan
- Computational Bio Big Data Open Innovation Laboratory, National Institute of Advanced Science and Technology, 305-8566 Tsukuba, Japan
| | - Shuji Shigenobu
- Core Research Facilities, National Institute for Basic Biology, 444-8585 Okazaki, Japan
| | - Xian-Ying Meng
- Bioproduction Research Institute, National Institute of Advanced Science and Technology, 305-8566 Tsukuba, Japan
| | - Naruo Nikoh
- Department of Liberal Arts, The Open University of Japan, 261-8586 Chiba, Japan
| | - Chiyo Noda
- Okazaki Institute for Integrative Bioscience, National Institute for Basic Biology, 444-8787 Okazaki, Japan
| | - Satoru Kobayashi
- Life Science Center for Survival Dynamics, Tsukuba Advanced Research Alliance, University of Tsukuba, 305-8577 Tsukuba, Japan
| | - Takema Fukatsu
- Bioproduction Research Institute, National Institute of Advanced Science and Technology, 305-8566 Tsukuba, Japan;
- Department of Biological Sciences, Graduate School of Science, University of Tokyo, 113-0033 Tokyo, Japan
- Graduate School of Life and Environmental Sciences, University of Tsukuba, 305-8572 Tsukuba, Japan
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73
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Leprêtre M, Almunia C, Armengaud J, Salvador A, Geffard A, Palos-Ladeiro M. The immune system of the freshwater zebra mussel, Dreissena polymorpha, decrypted by proteogenomics of hemocytes and plasma compartments. J Proteomics 2019; 202:103366. [PMID: 31015035 DOI: 10.1016/j.jprot.2019.04.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/20/2019] [Accepted: 04/17/2019] [Indexed: 12/21/2022]
Abstract
The immune system of bivalves is of great interest since it reflects the health status of these organisms during stressful conditions. While immune molecular responses are well documented for marine bivalves, few information is available for continental bivalves such as the zebra mussel, Dreissena polymorpha. A proteogenomic approach was conducted on both hemocytes and plasma to identified immune proteins of this non-model species. Combining transcriptomic sequences with mass spectrometry data acquired on proteins is a relevant strategy since 3020 proteins were identified, representing the largest protein inventory for this sentinel organism. Functional annotation and gene ontology (GO) analysis performed on the identified proteins described the main molecular players of hemocytes and plasma in immunity. GO analysis highlights the complementary immune functions of these two compartments in the management of micro-organisms. Functional annotation revealed new mechanisms in the immune defence of the zebra mussel. Proteins rarely observed in the hemolymph of bivalves were pinpointed such as natterin-like and thaumatin-like proteins. Furthermore, the high abundance of complement-related proteins observed in plasma suggested a strong implication of the complement system in the immune defence of D. polymorpha. This work brings a better understanding of the molecular mechanisms involved in zebra mussel immunity. SIGNIFICANCE: Although the molecular mechanisms of marine bivalves are widely investigated, little information is known for continental bivalves. Moreover, few proteomic studies described the complementarity of both hemolymphatic compartments (cellular and plasmatic) in the immune defence of invertebrates. The recent proteogenomics concept made it possible to discover proteins in non-model organisms. Here, we propose a proteogenomic strategy with the zebra mussel, a key sentinel species for biomonitoring of freshwater, to identify and describe the molecular actors involved in the immune system in both hemocytes and plasma compartments. More widely, this study provided new insight into bivalve immunity.
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Affiliation(s)
- Maxime Leprêtre
- Université de Reims Champagne-Ardenne UMR-I 02 INERIS-URCA-ULH SEBIO Unité Stress Environnementaux et, BIOsurveillance des milieux aquatiques, UFR Sciences Exactes et Naturelles, Campus du Moulin de la Housse, BP 1039 51687, Reims, CEDEX, France; Université de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, CNRS UMR 5280, F-69100 Villeurbanne, France
| | - Christine Almunia
- Laboratoire Innovations Technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, F-30207 Bagnols-sur-Cèze, France
| | - Jean Armengaud
- Laboratoire Innovations Technologiques pour la Détection et le Diagnostic (Li2D), Service de Pharmacologie et Immunoanalyse (SPI), CEA, INRA, F-30207 Bagnols-sur-Cèze, France
| | - Arnaud Salvador
- Université de Lyon, Université Claude Bernard Lyon 1, Institut des Sciences Analytiques, CNRS UMR 5280, F-69100 Villeurbanne, France
| | - Alain Geffard
- Université de Reims Champagne-Ardenne UMR-I 02 INERIS-URCA-ULH SEBIO Unité Stress Environnementaux et, BIOsurveillance des milieux aquatiques, UFR Sciences Exactes et Naturelles, Campus du Moulin de la Housse, BP 1039 51687, Reims, CEDEX, France
| | - Mélissa Palos-Ladeiro
- Université de Reims Champagne-Ardenne UMR-I 02 INERIS-URCA-ULH SEBIO Unité Stress Environnementaux et, BIOsurveillance des milieux aquatiques, UFR Sciences Exactes et Naturelles, Campus du Moulin de la Housse, BP 1039 51687, Reims, CEDEX, France.
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Sheehan G, Garvey A, Croke M, Kavanagh K. Innate humoral immune defences in mammals and insects: The same, with differences ? Virulence 2019; 9:1625-1639. [PMID: 30257608 PMCID: PMC7000196 DOI: 10.1080/21505594.2018.1526531] [Citation(s) in RCA: 123] [Impact Index Per Article: 24.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The insect immune response demonstrates many similarities to the innate immune response of mammals and a wide range of insects is now employed to assess the virulence of pathogens and produce results comparable to those obtained using mammals. Many of the humoral responses in insects and mammals are similar (e.g. insect transglutaminases and human clotting factor XIIIa) however a number show distinct differences. For example in mammals, melanization plays a role in protection from solar radiation and in skin and hair pigmentation. In contrast, insect melanization acts as a defence mechanism in which the proPO system is activated upon pathogen invasion. Human and insect antimicrobial peptides share distinct structural and functional similarities, insects produce the majority of their AMPs from the fat body while mammals rely on production locally at the site of infection by epithelial/mucosal cells. Understanding the structure and function of the insect immune system and the similarities with the innate immune response of mammals will increase the attractiveness of using insects as in vivo models for studying host – pathogen interactions.
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Affiliation(s)
- Gerard Sheehan
- a Department of Biology , Maynooth University , Maynooth , Ireland
| | - Amy Garvey
- a Department of Biology , Maynooth University , Maynooth , Ireland
| | - Michael Croke
- a Department of Biology , Maynooth University , Maynooth , Ireland
| | - Kevin Kavanagh
- a Department of Biology , Maynooth University , Maynooth , Ireland
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Li M, Wang J, Huang Q, Li C. Proteomic analysis highlights the immune responses of the hepatopancreas against Hematodinium infection in Portunus trituberculatus. J Proteomics 2019; 197:92-105. [DOI: 10.1016/j.jprot.2018.11.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 10/15/2018] [Accepted: 11/16/2018] [Indexed: 12/20/2022]
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76
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Söderhäll I, Junkunlo K. A comparative global proteomic analysis of the hematopoietic lineages in the crustacean Pacifastacus leniusculus. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 92:170-178. [PMID: 30481524 DOI: 10.1016/j.dci.2018.11.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/21/2018] [Accepted: 11/21/2018] [Indexed: 06/09/2023]
Abstract
In crustaceans as in other arthropods, the circulating hemocytes are vital for protecting the animal against attacking microorganisms. As many hemocytes are destroyed early during an infection, new hemocytes must fast get in place to prevent disperse of a pathogenic microbe, In order to understand the hematopoietic process in more detail we here report a complete proteomic analysis from purified cell types from the APC of the hematopoietic tissue, via the remaining parts of the HPT to the mature semigranular and granular hemocytes. Several possible cell type specific proteins are detected and new putative biomarkers within the crayfish hematopoietic lineage that can be used to increase the understanding of how the differentiation process is regulated is described.
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Affiliation(s)
- Irene Söderhäll
- Science for Life Laboratory, Department of Comparative Physiology, Uppsala University, Norbyvägen 18A, 752 36, Uppsala, Sweden.
| | - Kingkamon Junkunlo
- Department of Comparative Physiology, Uppsala University, Norbyvägen 18A, 752 36, Uppsala, Sweden
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77
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Souza RS, Gama MDVF, Schama R, Lima JBP, Diaz-Albiter HM, Genta FA. Biochemical and Functional Characterization of Glycoside Hydrolase Family 16 Genes in Aedes aegypti Larvae: Identification of the Major Digestive β-1,3-Glucanase. Front Physiol 2019; 10:122. [PMID: 30873040 PMCID: PMC6403176 DOI: 10.3389/fphys.2019.00122] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 01/31/2019] [Indexed: 12/13/2022] Open
Abstract
Insect β-1,3-glucanases belong to Glycoside Hydrolase Family 16 (GHF16) and are involved in digestion of detritus and plant hemicellulose. In this work, we investigated the role of GHF16 genes in Aedes aegypti larvae, due to their detritivore diet. Aedes aegypti genome has six genes belonging to GHF16 (Aae GH16.1 – Aae GH16.6), containing two to six exons. Sequence analysis suggests that five of these GHF16 sequences (Aae GH16.1, 2, 3, 5, and 6) contain the conserved catalytic residues of this family and correspond to glucanases. All genomes of Nematocera analyzed showed putative gene duplications corresponding to these sequences. Aae GH16.4 has no conserved catalytic residues and is probably a β-1,3-glucan binding protein involved in the activation of innate immune responses. Additionally, Ae. aegypti larvae contain significant β-1,3-glucanase activities in the head, gut and rest of body. These activities have optimum pH about 5–6 and molecular masses between 41 and 150 kDa. All GHF16 genes above showed different levels of expression in the larval head, gut or rest of the body. Knock-down of AeGH16.5 resulted in survival and pupation rates lower than controls (dsGFP and water treated). However, under stress conditions, severe mortalities were observed in AeGH16.1 and AeGH16.6 knocked-down larvae. Enzymatic assays of β-1,3-glucanase in AeGH16.5 silenced larvae exhibited lower activity in the gut and no change in the rest of the body. Chromatographic activity profiles from gut samples after GH16.5 silencing showed suppression of enzymatic activity, suggesting that this gene codes for the digestive larval β-1,3-glucanase of Ae. aegypti. This gene and enzyme are attractive targets for new control strategies, based on the impairment of normal gut physiology.
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Affiliation(s)
- Raquel Santos Souza
- Laboratory of Insect Biochemistry and Physiology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Maiara do Valle Faria Gama
- Laboratory of Insect Biochemistry and Physiology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Renata Schama
- Laboratory of Systems and Computational Biology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - José Bento Pereira Lima
- Laboratory of Physiology and Control of Arthropod Vectors, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | | | - Fernando Ariel Genta
- Laboratory of Insect Biochemistry and Physiology, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.,National Institute of Science and Technology for Molecular Entomology, Rio de Janeiro, Brazil
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Eugenia Nuñez-Valdez M, Lanois A, Pagès S, Duvic B, Gaudriault S. Inhibition of Spodoptera frugiperda phenoloxidase activity by the products of the Xenorhabdus rhabduscin gene cluster. PLoS One 2019; 14:e0212809. [PMID: 30794697 PMCID: PMC6386379 DOI: 10.1371/journal.pone.0212809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 02/08/2019] [Indexed: 12/15/2022] Open
Abstract
We evaluated the impact of bacterial rhabduscin synthesis on bacterial virulence and phenoloxidase inhibition in a Spodoptera model. We first showed that the rhabduscin cluster of the entomopathogenic bacterium Xenorhabdus nematophila was not necessary for virulence in the larvae of Spodoptera littoralis and Spodoptera frugiperda. Bacteria with mutations affecting the rhabduscin synthesis cluster (ΔisnAB and ΔGT mutants) were as virulent as the wild-type strain. We then developed an assay for measuring phenoloxidase activity in S. frugiperda and assessed the ability of bacterial culture supernatants to inhibit the insect phenoloxidase. Our findings confirm that the X. nematophila rhabduscin cluster is required for the inhibition of S. frugiperda phenoloxidase activity. The X. nematophila ΔisnAB mutant was unable to inhibit phenoloxidase, whereas ΔGT mutants displayed intermediate levels of phenoloxidase inhibition relative to the wild-type strain. The culture supernatants of Escherichia coli and of two entomopathogenic bacteria, Serratia entomophila and Xenorhabdus poinarii, were unable to inhibit S. frugiperda phenoloxidase activity. Heterologous expression of the X. nematophila rhabduscin cluster in these three strains was sufficient to restore inhibition. Interestingly, we observed pseudogenization of the X. poinarii rhabduscin gene cluster via the insertion of a 120 bp element into the isnA promoter. The inhibition of phenoloxidase activity by X. poinarii culture supernatants was restored by expression of the X. poinarii rhabduscin cluster under the control of an inducible Ptet promoter, consistent with recent pseudogenization. This study paves the way for advances in our understanding of the virulence of several entomopathogenic bacteria in non-model insects, such as the new invasive S. frugiperda species in Africa.
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Affiliation(s)
| | - Anne Lanois
- DGIMI, INRA, Université de Montpellier, Montpellier, France
| | - Sylvie Pagès
- DGIMI, INRA, Université de Montpellier, Montpellier, France
| | - Bernard Duvic
- DGIMI, INRA, Université de Montpellier, Montpellier, France
| | - Sophie Gaudriault
- DGIMI, INRA, Université de Montpellier, Montpellier, France
- * E-mail: (MENV); (SG)
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Ning J, Liu Y, Gao F, Liu H, Cui Z. Characterization and functional analysis of a novel gC1qR in the swimming crab Portunus trituberculatus. FISH & SHELLFISH IMMUNOLOGY 2019; 84:970-978. [PMID: 30395995 DOI: 10.1016/j.fsi.2018.11.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 10/29/2018] [Accepted: 11/01/2018] [Indexed: 06/08/2023]
Abstract
The receptor for the globular head of complement component C1q, gC1qR, is a multifunctional and multiligand binding protein with a crucial role in host defense. In the present study, a full-length cDNA sequence of a gC1qR homolog (PtgC1qR) in Portunus trituberculatus was identified. PtgC1qR was a 268-amino-acid polypeptide with a conserved MAM33 domain and a mitochondrial targeting sequence in the first 56 amino acids. The transcripts of PtgC1qR were detected in all examined tissues with the highest level detected in the hepatopancreas. Compared with other early embryonic stages, PtgC1qR was highly expressed in the fertilized eggs and embryos at the cleavage stage, which suggest PtgC1qR may be a maternal gene. The transcripts of PtgC1qR in hemocytes exhibited time-dependent response expression pattern after challenged with bacteria (Vibrio alginolyticus, Micrococcus luteus) and fungi (Pichia pastoris). Moreover, the recombinant PtgC1qR (rPtgC1qR) exhibited strong antibacterial activity and microbial-binding activity, suggesting its crucial role in immune defense and recognition. Further phenoloxidase (PO) assay showed that rPtgC1qR could suppress the crab PO activity in vitro in a dose-dependent manner, and it could result in nearly 100% inhibition of PO activity under the concentration of 11.65 μM. Knockdown of PtgC1qR could significantly enhance the expression of serine protease related genes (PtSP1-3 and PtSPH), proPO-associated genes (PtproPO and PtPPAF) and C3-like genes (Ptα2M1 and PtTEP). However, the phagocytosis related genes (PtMyosin, PtRab5 and PtArp) and Ptα2M2 were significantly down-regulated in the PtgC1qR silenced crabs. These findings together demonstrate that PtgC1qR might function in crab immune response via its antibacterial activity, immune recognition or regulating the proPO system, complement pathway and phagocytosis.
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Affiliation(s)
- Junhao Ning
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yuan Liu
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China.
| | - Fengtao Gao
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China
| | - Hourong Liu
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhaoxia Cui
- CAS Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266071, China; Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao, 266071, China.
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80
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Perdomo-Morales R, Montero-Alejo V, Perera E. The clotting system in decapod crustaceans: History, current knowledge and what we need to know beyond the models. FISH & SHELLFISH IMMUNOLOGY 2019; 84:204-212. [PMID: 30261301 DOI: 10.1016/j.fsi.2018.09.060] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 09/19/2018] [Accepted: 09/23/2018] [Indexed: 06/08/2023]
Abstract
Hemolymph coagulation is among the major arms of the humoral immune response in crustaceans. According to the current model, hemolymph clotting in decapod crustacean relies mostly on the polymerization of the plasmatic clotting protein (CP) which is directly promoted by calcium-depended transglutaminase (TGase) released from hemocytes upon microbial stimulus or injury. However, the type of hemocytes containing TGase, and hence how the TGase is released, might vary among species. Thus, we discourse here about possible mechanisms for clotting initiation. On the other hand, the initiation of coagulation reaction in the absence of microbial elicitors is poorly understood and seems to involve hemocytes lability, yet the mechanism remains unknown. A cellular clottable protein called coagulogen, different to the plasma CP, occurs in several species and could be related with the immune response, but the biological relevance of this protein is unknown. It is also demonstrated that the clotting response is actively involved in defense against pathogens. In addition, both TGase and the CP show pleiotropic functions, and although both proteins are relatively conserved, some of their physic-chemical properties vary significantly. The occurrence of differences in the clotting system in crustaceans is conceivable given the high number of species and their diverse ecology. Results from still non-studied decapods may provide explanation for some of the issues presented here from an evolutionary perspective.
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Affiliation(s)
- Rolando Perdomo-Morales
- Center for Pharmaceuticals Research and Development. Ave. 26 No. 1605, Esq. Puentes Grandes. Plaza. 10600. La Habana. Cuba.
| | - Vivian Montero-Alejo
- Center for Pharmaceuticals Research and Development. Ave. 26 No. 1605, Esq. Puentes Grandes. Plaza. 10600. La Habana. Cuba
| | - Erick Perera
- Nutrigenomics and Fish Growth Endocrinology Group, Institute of Aquaculture Torre de la Sal, CSIC, Castellón, Spain
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81
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Zhang Y, Wang D, Zhang Z, Wang Z, Zhang D, Yin H. Transcriptome analysis of Artemia sinica in response to Micrococcus lysodeikticus infection. FISH & SHELLFISH IMMUNOLOGY 2018; 81:92-98. [PMID: 30006042 DOI: 10.1016/j.fsi.2018.06.033] [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: 03/05/2018] [Revised: 06/12/2018] [Accepted: 06/15/2018] [Indexed: 06/08/2023]
Abstract
To enhance genomic resources and understand the molecular immune mechanisms underlying the response topathogens, we first performed a comparative gene transcription analysis from Micrococcus lysodeikticus-immunized Artemia sinica and from a control group through RNA-Seq technology, meanwhile the differentially expressed genes (DEGs) were investigated. In total, 80, 113, 984 clean reads were obtained and then assembled into 71,536 unigenes with an average length of 1115 bp and an N50 of 1783 bp. Unigenes were annotated by comparing against nr, Swiss-Prot\KEGG\ COG\ KOG\ GO and Pfam databases, and 27,689 unigenes (38.7%) were annotated in at least one database. After bacterial challenge, 183 and 298 genes were identified as remarkably up-regulated or down-regulated, respectively, amongst 481 were associated with 168 pathways, including classical immune-related pathways, such as 'Toll-like receptor signaling', 'the complement cascades', 'MAPK signaling pathway' and 'Apoptosis'. Besides, eight genes which were differently expressed immune-related were confirmed by using quantitative real-time PCR. This study characterized a gene expression pattern for normal and M. lysodeikticus -immunized A. sinica for the first time and sheds new light on the molecular mechanisms thus enabling future efforts on disease control programs in this valuable aquaculture species.
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Affiliation(s)
- Yulong Zhang
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, 071002, Baoding, PR China
| | - Di Wang
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, 071002, Baoding, PR China
| | - Zao Zhang
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, 071002, Baoding, PR China
| | - Zhangping Wang
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, 071002, Baoding, PR China
| | - Daochuan Zhang
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, 071002, Baoding, PR China.
| | - Hong Yin
- The Key Laboratory of Zoological Systematics and Application, College of Life Sciences, Hebei University, 071002, Baoding, PR China.
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82
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Feng C, Zhao Y, Chen K, Zhai H, Wang Z, Jiang H, Wang Y, Wang L, Zhang Y, Tang T. Clip domain prophenoloxidase activating protease is required for Ostrinia furnacalis Guenée to defend against bacterial infection. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 87:204-215. [PMID: 30017863 PMCID: PMC6093219 DOI: 10.1016/j.dci.2018.06.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 06/30/2018] [Accepted: 06/30/2018] [Indexed: 05/30/2023]
Abstract
The prophenoloxidase (PPO) activating system in insects plays an important role in defense against microbial invasion. In this paper, we identified a PPO activating protease (designated OfPAP) containing a 1203 bp open reading frame encoding a 400-residue protein composed of two clip domains and a C-terminal serine protease domain from Ostrinia furnacalis. SignalP analysis revealed a putative signal peptide of 18 residues. The mature OfPAP was predicted to be 382 residues long with a calculated Mr of 44.8 kDa and pI of 6.66. Multiple sequence alignment and phylogenetic analysis indicated that OfPAP was orthologous to the PAPs in the other lepidopterans. A large increase of the transcript levels was observed in hemocytes at 4 h post injection (hpi) of killed Bacillus subtilis, whereas its level in integument increased continuously from 4 to 12 hpi in the challenged larvae and began to decline at 24 hpi. After OfPAP expression had been silenced, the median lethal time (LT50) of Escherichia coli-infected larvae (1.0 day) became significantly lower than that of E. coli-infected wild-type (3.0 days, p < 0.01). A 3.5-fold increase in E. coli colony forming units occurred in larval hemolymph of the OfPAP knockdown larvae, as compared with that of the control larvae not injected with dsRNA. There were notable decreases in PO and IEARase activities in hemolymph of the OfPAP knockdown larvae. In summary, we have demonstrated that OfPAP is a component of the PPO activation system, likely by functioning as a PPO activating protease in O. furnacalis larvae.
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Affiliation(s)
- Congjing Feng
- Department of Plant Protection, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China.
| | - Ya Zhao
- Department of Plant Protection, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Kangkang Chen
- Department of Plant Protection, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Huifeng Zhai
- Department of Plant Protection, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Zhenying Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Haobo Jiang
- Department of Entomology and Plant Pathology, Oklahoma State University, Stillwater, OK 74078, USA
| | - Yingjuan Wang
- Department of Plant Protection, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Libao Wang
- Department of Plant Protection, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Yiqiang Zhang
- Department of Plant Protection, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
| | - Tai Tang
- Department of Plant Protection, College of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, China
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83
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Palmer CV, Baird AH. Coral tumor-like growth anomalies induce an immune response and reduce fecundity. DISEASES OF AQUATIC ORGANISMS 2018; 130:77-81. [PMID: 30154275 DOI: 10.3354/dao03258] [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] [Indexed: 06/08/2023]
Abstract
Coral growth anomalies (GAs) are chronic diseases that adversely affect organism health and fitness. We investigated immunity and fecundity within and among GA-affected and visually healthy control colonies of the reef-building coral Acropora hyacinthus. Compared to controls, GAs had higher activity of the key immunity enzyme phenoloxidase (PO), suggesting a localised immune response within the GA. Both GAs and healthy tissue of GA-affected colonies had significantly greater total potential PO (tpPO)-PO activity inclusive of the activated latent PO, prophenoloxidase-than control colonies. Higher tpPO activity in GA-affected corals suggests elevated constitutive immunity compared to visually healthy controls. Additionally, fewer GA-affected colonies produced gametes, fewer polyps had oocytes (p < 0.001) and the number of oocytes per polyp was lower. Therefore, GAs in A. hyacinthus might induce, or represent a shift in resource investment towards immunity and away from reproduction. While the effect on population growth is likely to be small, reduced fecundity in GA-affected colonies does suggest a selective pressure against GAs.
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Affiliation(s)
- Caroline V Palmer
- School of Marine and Tropical Biology, James Cook University, Townsville, QLD 4811, Australia
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84
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Lu Y, Zhao Y, Lu H, Bai Q, Yang Y, Zheng X, Lu Z. Midgut Transcriptional Variation of Chilo suppressalis Larvae Induced by Feeding on the Dead-End Trap Plant, Vetiveria zizanioides. Front Physiol 2018; 9:1067. [PMID: 30131719 PMCID: PMC6090068 DOI: 10.3389/fphys.2018.01067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 07/17/2018] [Indexed: 01/21/2023] Open
Abstract
Chilo supprressalis is one of the most important rice pests that causes serious damage to production in the rice growth area of Asia. Vetiver grass (Vetiveria zizanioides) was previously found to effectively attract female adults of C. suppressalis laying eggs on vetiver leaves, while the larvae cannot complete their life cycles by feeding on vetiver, indicating a potential means of controlling this pest. In the present study, the transcriptomes of midguts of rice-fed and vetiver-fed C. suppressalis larvae were profiled, which aimed to clarify the molecular mechanism of vetiver as a dead-end trap plant preliminarily. We found that ingestion of vetiver provoked a robust transcriptional response in the larval midguts, and a total of 1,849 differentially expressed UniGenes were identified. We focused on 12 digestion-related genes, four immune-related genes and three detoxification-related genes. Most of these genes were significantly down regulated in the larval midguts at 6, 8, and 10 days after feeding on vetiver compared to on rice. Transcriptional dynamics suggested that these genes might be involved in toxicity responses following exposure to vetiver. Taken together, this study provides an initial molecular framework for developing biological control strategies for C. suppressalis in an effort to protect economically important rice crops.
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Affiliation(s)
- Yanhui Lu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yanyan Zhao
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Han Lu
- School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Qi Bai
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yajun Yang
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Xusong Zheng
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Zhongxian Lu
- State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
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85
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Gorbushin AM. Immune repertoire in the transcriptome of Littorina littorea reveals new trends in lophotrochozoan proto-complement evolution. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 84:250-263. [PMID: 29501422 DOI: 10.1016/j.dci.2018.02.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/17/2018] [Accepted: 02/26/2018] [Indexed: 05/16/2023]
Abstract
The evolution of complement system in invertebrates is poorly investigated. While the repertoire of complement genes in several Ecdysozoa lineages is found substantially different from that of Deuterostomia, the composition and function of the complement in the second protostome lineage, Lophotrochozoa, remains unclear. Here we report the general description of new transcriptomic data on the common periwinkle, Littorina littorea, and trace the evolutionary trajectories of the ancestral proto-complement repertoire. The repertoire is defined as immune cascade providing the minimum set of C3-associated molecules required for C3b amplification, opsonization of the targets and their phagocytosis: thioester protein (TEP) C3, serine protease C2/factor B (Bf) and complement receptors (CR). The reference transcriptome of L. littorea was built from the dual-species RNA-seq experiment with the periwinkle and its tissue digenean parasite Himasthla elongata. Five TEPs, including the ortholog of the C3, are found expressed in the in the mollusk's inflamed tissues. The homolog of the complement receptors CR1/CR2 is also expressed, however the ortholog of Bf is not. The extensive phylogenetic analysis showed that the C3 ortholog and the complement receptors are retained in all key lophotrochozoan taxa: Mollusca, Annelida and Brachiopoda. However, the Bf ortholog was lost at least three times independently in different lineages: i) Cephalopoda, ii) a common ancestor of all Gastropoda and iii) one of the Annelida lineage, Clitellata. Both C3 and Bf molecules were retained in bivalve species, brachiopods and annelid worms from the Polychaeta lineage. Hypothetically, the function of the lost Bf in these animals can be compensated by Factor L (Lf) - the serine protease first found in L. littorea and homologous to both, the Bf and the arthropod factor C (Cf). The contrast differences in proto-complement repertoire between the sister mollusk' taxa, Bivalvia and Gastropoda (the conserved and modified sets, respectively), can underlie differences in their susceptibility to digenean infection.
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Affiliation(s)
- Alexander M Gorbushin
- Sechenov Institute of Evolutionary Physiology and Biochemistry (IEPhB RAS), Saint-Petersburg, Russia.
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86
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Jiang S, Qiu L, Wang L, Jia Z, Lv Z, Wang M, Liu C, Xu J, Song L. Transcriptomic and Quantitative Proteomic Analyses Provide Insights Into the Phagocytic Killing of Hemocytes in the Oyster Crassostrea gigas. Front Immunol 2018; 9:1280. [PMID: 29942306 PMCID: PMC6005338 DOI: 10.3389/fimmu.2018.01280] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Accepted: 05/22/2018] [Indexed: 12/05/2022] Open
Abstract
As invertebrates lack an adaptive immune system, they depend to a large extent on their innate immune system to recognize and clear invading pathogens. Although phagocytes play pivotal roles in invertebrate innate immunity, the molecular mechanisms underlying this killing remain unclear. Cells of this type from the Pacific oyster Crassostrea gigas were classified efficiently in this study via fluorescence-activated cell sorting (FACS) based on their phagocytosis of FITC-labeled latex beads. Transcriptomic and quantitative proteomic analyses revealed a series of differentially expressed genes (DEGs) and proteins present in phagocytes; of the 352 significantly high expressed proteins identified here within the phagocyte proteome, 262 corresponding genes were similarly high expressed in the transcriptome, while 140 of 205 significantly low expressed proteins within the proteome were transcriptionally low expressed. A pathway crosstalk network analysis of these significantly high expressed proteins revealed that phagocytes were highly activated in a number of antimicrobial-related biological processes, including oxidation–reduction and lysosomal proteolysis processes. A number of DEGs, including oxidase, lysosomal protease, and immune receptors, were also validated in this study using quantitative PCR, while seven lysosomal cysteine proteases, referred to as cathepsin Ls, were significantly high expressed in phagocytes. Results show that the expression level of cathepsin L protein in phagocytes [mean fluorescence intensity (MFI): 327 ± 51] was significantly higher (p < 0.01) than that in non-phagocytic hemocytes (MFI: 83 ± 26), while the cathepsin L protein was colocalized with the phagocytosed Vibrio splendidus in oyster hemocytes during this process. The results of this study collectively suggest that oyster phagocytes possess both potent oxidative killing and microbial disintegration capacities; these findings provide important insights into hemocyte phagocytic killing as a component of C. gigas innate immunity.
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Affiliation(s)
- Shuai Jiang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Limei Qiu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
| | - Zhihao Jia
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Zhao Lv
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Mengqiang Wang
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China
| | - Conghui Liu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Jiachao Xu
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology and Disease Control, Dalian Ocean University, Dalian, China
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87
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Shibata T, Kobayashi Y, Ikeda Y, Kawabata SI. Intermolecular autocatalytic activation of serine protease zymogen factor C through an active transition state responding to lipopolysaccharide. J Biol Chem 2018; 293:11589-11599. [PMID: 29866883 DOI: 10.1074/jbc.ra118.002311] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 04/30/2018] [Indexed: 11/06/2022] Open
Abstract
Horseshoe crab hemolymph coagulation is believed to be triggered by the autocatalytic activation of serine protease zymogen factor C to the active form, α-factor C, belonging to the trypsin family, through an active transition state of factor C responding to bacterial lipopolysaccharide (LPS), designated factor C*. However, the existence of factor C* is only speculative, and its proteolytic activity has not been validated. In addition, it remains unclear whether the proteolytic cleavage of the Phe737-Ile738 bond (Phe737 site) of factor C required for the conversion to α-factor C occurs intramolecularly or intermolecularly between the factor C molecules. Here we show that the Phe737 site of a catalytic Ser-deficient mutant of factor C is LPS-dependently hydrolyzed by a Phe737 site-uncleavable mutant, clearly indicating the existence of the active transition state of factor C without cleavage of the Phe737 site. Moreover, we found the following facts using several mutants of factor C: the autocatalytic cleavage of factor C occurs intermolecularly between factor C* molecules on the LPS surface; factor C* does not exhibit intrinsic chymotryptic activity against the Phe737 site, but it may recognize a three-dimensional structure around the cleavage site; and LPS is required not only to complete the substrate-binding site and oxyanion hole of factor C* by interacting with the N-terminal region but also to allow the Phe737 site to be cleaved by inducing a conformational change around the Phe737 site or by acting as a scaffold to induce specific protein-protein interactions between factor C* molecules.
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Affiliation(s)
- Toshio Shibata
- Department of Biology, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan; Graduate School of Systems Life Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - Yuki Kobayashi
- Department of Biology, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan
| | - Yuto Ikeda
- Graduate School of Systems Life Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - Shun-Ichiro Kawabata
- Department of Biology, Faculty of Science, Kyushu University, Fukuoka 819-0395, Japan; Graduate School of Systems Life Sciences, Kyushu University, Fukuoka 819-0395, Japan.
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88
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Huang X, Han K, Li T, Wang W, Ren Q. Novel L-type lectin from fresh water prawn, Macrobrachium rosenbergii participates in antibacterial and antiviral immune responses. FISH & SHELLFISH IMMUNOLOGY 2018; 77:304-311. [PMID: 29621634 DOI: 10.1016/j.fsi.2018.03.061] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/17/2018] [Accepted: 03/31/2018] [Indexed: 06/08/2023]
Abstract
L-type lectins (LTLs) play important roles in the secretory pathway of animals, including selective protein trafficking, sorting, and targeting. They have a leguminous lectin domain and can bind to high-mannose-type oligosaccharides. In this study, a novel LTL, designated as MrVIP36, was identified from Macrobrachium rosenbergii. The full-length cDNA of MrVIP36 was 1687 bp with a 972 bp open reading frame encoding a putative protein of 323 deduced amino acids. The deduced MrVIP36 protein contained an LTL-like domain (LTLD) and a transmembrane domain. Phylogenetic tree analysis indicated that MrVIP36 was a member of invertebrate LTLs. It has a closer evolutionary distance with invertebrate LTLs than vertebrate LTLs. Quantitative real time polymerase chain reaction showed that MrVIP36 is expressed widely in all tested tissues, especially in the hepatopancreas and intestine. MrVIP36 was significantly up-regulated in hemocytes of prawns at different time points after Staphylococcus aureus, Vibrio parahaemolyticus, and White spot syndrome virus (WSSV) infections. The recombinant protein MrLTLD (rMrLTLD) could bind and agglutinate all tested bacteria. Sugar binding assay revealed that rMrLTLD could also bind to the glycoconjugates of the bacterial surface, such as lipopolysaccharide and peptidoglycan. Moreover, rMrLTLD could inhibit the growth activities of microorganisms in vitro and accelerate the bacterial clearance in vivo. rMrLTLD could also inhibit WSSV replication in vivo. Survival rate analysis showed that rMrLTLD could protect prawns against WSSV infection. Taken together, our results suggested that MrVIP36 functioned as a pattern recognition receptor involved in the antibacterial and antiviral immune responses of M. rosenbergii.
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Affiliation(s)
- Xin Huang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, 210046, China
| | - Keke Han
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, 210046, China
| | - Tingting Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, 210046, China
| | - Wen Wang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, 210046, China.
| | - Qian Ren
- Jiangsu Key Laboratory for Biodiversity and Biotechnology and Jiangsu Key Laboratory for Aquatic Crustacean Diseases, College of Life Sciences, Nanjing Normal University, Nanjing, 210046, China; Co-Innovation Center for Marine Bio-Industry Technology of Jiangsu Province, Lianyungang, 222005, China.
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89
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Qu S, Wang S. Interaction of entomopathogenic fungi with the host immune system. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2018; 83:96-103. [PMID: 29355579 DOI: 10.1016/j.dci.2018.01.010] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 01/14/2018] [Accepted: 01/15/2018] [Indexed: 06/07/2023]
Abstract
Entomopathogenic fungi can invade wide range of insect hosts in the natural world and have been used as environmentally friendly alternatives to chemical insecticides for pest control. Studies of host-pathogen interactions provide valuable insights into the coevolutionay arms race between fungal pathogens and their hosts. Entomopathogenic fungi have evolved a series of sophisticated strategies to counter insect immune defenses. In response to fungal infection, insect hosts rely on behavior avoidance, physical barrier and innate immune defenses in the fight against invading pathogens. The insect cuticle acts as the first physical barrier against pathogens. It is an inhospitable physiological environment that contains chemicals (e.g., antimicrobial peptides and reactive oxygen species), which inhibit fungal growth. In addition, innate immune responses, including cellular immunity and humoral immunity, play critical roles in preventing fungal infection. In this review, we outline the current state of our knowledge of insect defenses to fungal infection and discuss the strategies by which entomopathogenic fungi counter the host immune system. Increased knowledge regarding the molecular interactions between entomopathogenic fungi and the insect host could provide new strategies for pest management.
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Affiliation(s)
- Shuang Qu
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Sibao Wang
- Key Laboratory of Insect Developmental and Evolutionary Biology, CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China.
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90
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Felicioli A, Turchi B, Fratini F, Giusti M, Nuvoloni R, Dani FR, Sagona S. Proteinase pattern of honeybee prepupae from healthy and American Foulbrood infected bees investigated by zymography. Electrophoresis 2018; 39:2160-2167. [PMID: 29761912 DOI: 10.1002/elps.201800112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/02/2018] [Accepted: 05/02/2018] [Indexed: 11/05/2022]
Abstract
American foulbrood disease (AFB) is the main devastating disease that affects honeybees' brood, caused by Paenibacillus larvae. The trend of the research on AFB has addressed the mechanisms by which P. larvae bacteria kill honeybee larvae. Since prepupae could react to the infection of AFB by increasing protease synthesis, the aim of this work was to compare protease activity in worker prepupae belonging to healthy colonies and to colonies affected by AFB. This investigation was performed by zymography. In gel, proteolytic activity was observed in prepupae extracts belonging only to the healthy colonies. In the prepupae extracts, 2D zimography followed by protein identification by MS allowed to detect Trypsin-1 and Chymotrypsin-1, which were not observed in diseased specimens. Further investigations are needed to clarify the involvement of these proteinases in the immune response of honeybee larvae and the mechanisms by which P. larvae inhibits protease production in its host.
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Affiliation(s)
| | - Barbara Turchi
- Department of Veterinary Science, Pisa University, Pisa, Italy
| | - Filippo Fratini
- Department of Veterinary Science, Pisa University, Pisa, Italy
| | - Matteo Giusti
- Department of Veterinary Science, Pisa University, Pisa, Italy
| | | | - Francesca Romana Dani
- Department of Biology, University of Firenze, Sesto Fiorentino, Italy.,Mass Spectrometry Centre (CISM) of Florence University, Sesto Fiorentino, Italy
| | - Simona Sagona
- Department of Veterinary Science, Pisa University, Pisa, Italy
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91
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Fuess LE, Mann WT, Jinks LR, Brinkhuis V, Mydlarz LD. Transcriptional analyses provide new insight into the late-stage immune response of a diseased Caribbean coral. ROYAL SOCIETY OPEN SCIENCE 2018; 5:172062. [PMID: 29892394 PMCID: PMC5990752 DOI: 10.1098/rsos.172062] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 04/13/2018] [Indexed: 05/24/2023]
Abstract
Increasing global temperatures due to climate change have resulted in respective increases in the severity and frequency of epizootics around the globe. Corals in particular have faced rapid declines due to disease outbreaks. Understanding immune responses and associated potential life-history trade-offs is therefore a priority. In the autumn of 2011, a novel disease of octocorals of the genus Eunicea was first documented in the Florida Keys. Termed Eunicea Black Disease (EBD), the disease is easily identified by the dark appearance of affected tissue, caused by a strong melanization response on the part of the host. In order to better understand the response of corals to EBD, we conducted full transcriptome analysis of 3 healthy and 3 diseased specimens of Eunicea calyculata collected from offshore southeast Florida. Differential expression and protein analyses revealed a strong, diverse immune response to EBD characterized by phagocytosis, adhesion and melanization on the part of the host. Furthermore, coexpression network analyses suggested this might come at the cost of reduced cell cycle progression and growth. This is in accordance with past histological studies of naturally infected hard corals, suggesting that potential trade-offs during infection may affect post-outbreak recovery of reef ecosystems by reducing both organismal growth and fecundity. Our findings highlight the importance of considering factors beyond mortality when estimating effects of disease outbreaks on ecosystems.
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Affiliation(s)
- Lauren E. Fuess
- Department of Biology, University of Texas Arlington, Arlington, TX, USA
| | - Whitney T. Mann
- Department of Biology, University of Texas Arlington, Arlington, TX, USA
| | - Lea R. Jinks
- Department of Biology, University of Texas Arlington, Arlington, TX, USA
| | - Vanessa Brinkhuis
- Florida Fish and Wildlife Conservation Commission, Fish and Wildlife Research Institute, 100 8th Avenue SE, St Petersburg, FL 33701, USA
| | - Laura D. Mydlarz
- Department of Biology, University of Texas Arlington, Arlington, TX, USA
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92
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Abstract
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Compartmentalization of proteases
enables spatially and temporally
controlled protein degradation in cells. Here we show that an engineered
lumazine synthase protein cage, which possesses a negatively supercharged
lumen, can exploit electrostatic effects to sort substrates for an
encapsulated protease. This proteasome-like nanoreactor preferentially
cleaves positively charged polypeptides over both anionic and zwitterionic
substrates, inverting the inherent substrate specificity of the guest
enzyme approximately 480 fold. Our results suggest that supercharged
nanochambers could provide a simple and potentially general means
of conferring substrate specificity to diverse encapsulated catalysts.
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Affiliation(s)
- Yusuke Azuma
- Laboratory of Organic Chemistry, ETH Zurich , 8093 Zurich, Switzerland
| | - Daniel L V Bader
- Laboratory of Organic Chemistry, ETH Zurich , 8093 Zurich, Switzerland
| | - Donald Hilvert
- Laboratory of Organic Chemistry, ETH Zurich , 8093 Zurich, Switzerland
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93
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Dai LS, Abbas MN, Kausar S, Zhou Y. Transcriptome analysis of hepatopancraes of Procambarus clarkii challenged with polyriboinosinic polyribocytidylic acid (poly I:C). FISH & SHELLFISH IMMUNOLOGY 2017; 71:144-150. [PMID: 29017948 DOI: 10.1016/j.fsi.2017.10.010] [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: 07/15/2017] [Revised: 09/28/2017] [Accepted: 10/06/2017] [Indexed: 06/07/2023]
Abstract
Crustacean hepatopancreas regulates metabolic processes, biogenesis and innate immune processes, and the knowledge on its immune genes are crucial to understand antimicrobial mechanisms. In this study, we reported the transcriptomic profile of Procambarus clarkii hepatopancreas after poly I:C administration using high-throughput sequencing. Following de novo assembly 56,716 unigene sequences with an average length of 810 bp was obtained. The unigene sequences were annotated to three ontologies including cellular components, biological processes and molecular functions, further 56,716 unigene sequences were mapped to 25 COG categories. A total of 2497 differentially expressed genes (DEGs) were identified following the comparative analysis between poly I:C treated and control group, and then KEGG enrichment analysis were performed to detect immune related pathways. Quantitative real time polymerase chain reaction showed that the selected DEGs significantly up-regulated following poly I:C administration in comparison to control group. The transcriptomic sequence information will improve the knowledge of this economically important crustacean, and will shed light on its antiviral immune mechanisms.
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Affiliation(s)
- Li-Shang Dai
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, PR China.
| | - Muhammad Nadeem Abbas
- Department of Zoology and Fisheries, University of Agriculture, Faisalabad 38000, Pakistan
| | - Saima Kausar
- Department of Zoology and Fisheries, University of Agriculture, Faisalabad 38000, Pakistan
| | - Yang Zhou
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, PR China
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94
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Wen D, Luo H, Li T, Wu C, Zhang J, Wang X, Zhang R. Cloning and characterization of an insect apolipoprotein (apolipophorin-II/I) involved in the host immune response of Antheraea pernyi. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2017; 77:221-228. [PMID: 28830681 DOI: 10.1016/j.dci.2017.08.010] [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: 05/12/2017] [Revised: 08/18/2017] [Accepted: 08/19/2017] [Indexed: 06/07/2023]
Abstract
Apolipoproteins are protein components of lipoprotein particles, and are increasingly recognized to be functioning in the innate immune systems of both insects and mammals. Mammalian apolipoprotein B (apoB) is associated with a diverse range of innate immune defenses including suppression of bacterial pathogenesis, virus toxicity neutralization, and inhibition of cytokine releases from immune cells. However, little is known about apoB homologous insect apolipophorin-II/I (apoLp-II/I) in controlling of specific pathogen-host encounters such as microbial infections. In the present study, we describe cDNA cloning and characterization of an apoLp-II/I from Chinese oak silk worm, Antheraea pernyi. The apoLp-II/I cDNA is 10237bp in length, which possesses an open reading frame encoding 3305 amino acids. A consensus cleavage site RGRR presenting from Arg710 to Arg713 implies posttranslational cleavage of this protein. Ap-apoLp-II/I shares high sequence identities with apoLp-II/I in lepidoptera and other insects. In addition, considerable similarities also exist between Ap-apoLp-II/I and human apoB, which basically positioned in first 1000 residues of the amino termini. Tissue distribution and time-course expression results demonstrate that Ap-apoLp-II/I transcripts were detected predominantly in the fat body, less in epidermis and rarely in midgut, while the synthetic apoLp-II/I protein was abundant in hemocytes and plasma instead of the fatbody. Expression of Ap-apoLp-II/I was stimulated in response to bacterial challenge. In addition, our preliminary studies established a novel role for Ap-apoLp-II/I in regulating prophenoloxidase activation system. Taken together, apoLp-II/I may play an essential role in innate responses of Antheraea pernyi.
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Affiliation(s)
- Daihua Wen
- School of Life Science and Bio-pharmaceutics, Shenyang Pharmaceutical University, China; School of Medical Devices, Shenyang Pharmaceutical University, China
| | - Hao Luo
- School of Life Science and Bio-pharmaceutics, Shenyang Pharmaceutical University, China
| | - Tienan Li
- School of Life Science and Bio-pharmaceutics, Shenyang Pharmaceutical University, China
| | - Chunfu Wu
- School of Life Science and Bio-pharmaceutics, Shenyang Pharmaceutical University, China
| | - Jinghai Zhang
- School of Medical Devices, Shenyang Pharmaceutical University, China
| | - Xialu Wang
- School of Medical Devices, Shenyang Pharmaceutical University, China.
| | - Rong Zhang
- School of Life Science and Bio-pharmaceutics, Shenyang Pharmaceutical University, China.
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95
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Morgan BP, Boyd C, Bubeck D. Molecular cell biology of complement membrane attack. Semin Cell Dev Biol 2017; 72:124-132. [PMID: 28647534 DOI: 10.1016/j.semcdb.2017.06.009] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 06/10/2017] [Accepted: 06/14/2017] [Indexed: 12/11/2022]
Abstract
The membrane attack complex (MAC) is the pore-forming toxin of the complement system, a relatively early evolutionary acquisition that confers upon complement the capacity to directly kill pathogens. The MAC is more than just a bactericidal missile, having the capacity when formed on self-cells to initiate a host of cell activation events that can have profound consequences for tissue homeostasis in the face of infection or injury. Although the capacity of complement to directly kill pathogens has been recognised for over a century, and the pore-forming killing mechanism for at least 50 years, there remains considerable uncertainty regarding precisely how MAC mediates its killing and cell activation activities. A recent burst of new information on MAC structure provides context and opportunity to re-assess the ways in which MAC kills bacteria and modulates cell functions. In this brief review we will describe key aspects of MAC evolution, function and structure and seek to use the new structural information to better explain how the MAC works.
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Affiliation(s)
- B Paul Morgan
- Systems Immunity University Research Institute, Division of Infection and Immunity, School of Medicine, Cardiff University, Cardiff CF144XN, UK.
| | - Courtney Boyd
- Faculty of Natural Sciences, Department of Life Sciences, Imperial College, 506 Sir Ernst Chain Building, London SW7 2AZ, UK
| | - Doryen Bubeck
- Faculty of Natural Sciences, Department of Life Sciences, Imperial College, 506 Sir Ernst Chain Building, London SW7 2AZ, UK
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96
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Anjugam M, Vaseeharan B, Iswarya A, Amala M, Govindarajan M, Alharbi NS, Kadaikunnan S, Khaled JM, Benelli G. A study on β-glucan binding protein (β-GBP) and its involvement in phenoloxidase cascade in Indian white shrimp Fenneropenaeus indicus. Mol Immunol 2017; 92:1-11. [DOI: 10.1016/j.molimm.2017.09.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 09/20/2017] [Accepted: 09/22/2017] [Indexed: 11/24/2022]
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97
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Saavedra C, Milan M, Leite RB, Cordero D, Patarnello T, Cancela ML, Bargelloni L. A Microarray Study of Carpet-Shell Clam ( Ruditapes decussatus) Shows Common and Organ-Specific Growth-Related Gene Expression Differences in Gills and Digestive Gland. Front Physiol 2017; 8:943. [PMID: 29234285 PMCID: PMC5712350 DOI: 10.3389/fphys.2017.00943] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 11/07/2017] [Indexed: 01/04/2023] Open
Abstract
Growth rate is one of the most important traits from the point of view of individual fitness and commercial production in mollusks, but its molecular and physiological basis is poorly known. We have studied differential gene expression related to differences in growth rate in adult individuals of the commercial marine clam Ruditapes decussatus. Gene expression in the gills and the digestive gland was analyzed in 5 fast-growing and five slow-growing animals by means of an oligonucleotide microarray containing 14,003 probes. A total of 356 differentially expressed genes (DEG) were found. We tested the hypothesis that differential expression might be concentrated at the growth control gene core (GCGC), i.e., the set of genes that underlie the molecular mechanisms of genetic control of tissue and organ growth and body size, as demonstrated in model organisms. The GCGC includes the genes coding for enzymes of the insulin/insulin-like growth factor signaling pathway (IIS), enzymes of four additional signaling pathways (Raf/Ras/Mapk, Jnk, TOR, and Hippo), and transcription factors acting at the end of those pathways. Only two out of 97 GCGC genes present in the microarray showed differential expression, indicating a very little contribution of GCGC genes to growth-related differential gene expression. Forty eight DEGs were shared by both organs, with gene ontology (GO) annotations corresponding to transcription regulation, RNA splicing, sugar metabolism, protein catabolism, immunity, defense against pathogens, and fatty acid biosynthesis. GO term enrichment tests indicated that genes related to growth regulation, development and morphogenesis, extracellular matrix proteins, and proteolysis were overrepresented in the gills. In the digestive gland overrepresented GO terms referred to gene expression control through chromatin rearrangement, RAS-related small GTPases, glucolysis, and energy metabolism. These analyses suggest a relevant role of, among others, some genes related to the IIS, such as the ParaHox gene Xlox, CCAR and the CCN family of secreted proteins, in the regulation of growth in bivalves.
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Affiliation(s)
- Carlos Saavedra
- Instituto de Acuicultura Torre de la Sal, Consejo Superior de Investigaciones Científicas, Castelló de la Plana, Spain
| | - Massimo Milan
- Dipartimento di Biomedicina Comparata e Alimentazione, Universitá di Padova, Polo di Agripolis, Legnaro, Italy
| | - Ricardo B Leite
- Centre of Marine Sciences (CCMAR), Universidade do Algarve, Faro, Portugal
| | - David Cordero
- Instituto de Acuicultura Torre de la Sal, Consejo Superior de Investigaciones Científicas, Castelló de la Plana, Spain
| | - Tomaso Patarnello
- Dipartimento di Biomedicina Comparata e Alimentazione, Universitá di Padova, Polo di Agripolis, Legnaro, Italy
| | - M Leonor Cancela
- Centre of Marine Sciences (CCMAR), Universidade do Algarve, Faro, Portugal.,Department of Biomedical Sciences and Medicine and Academic Biomedical Centre, Universidade do Algarve, Faro, Portugal
| | - Luca Bargelloni
- Dipartimento di Biomedicina Comparata e Alimentazione, Universitá di Padova, Polo di Agripolis, Legnaro, Italy
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98
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Zha H, Lewis G, Alfaro A, Wang S, Dong Y, Grandiosa R, Jeffs A. Immune status of the spiny lobster Jasus edwardsii with tail fan necrosis. DISEASES OF AQUATIC ORGANISMS 2017; 126:229-238. [PMID: 29160220 DOI: 10.3354/dao03176] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tail fan necrosis (TFN), a disorder commonly found in some populations of commercially fished and cultured lobsters, is thought to be initiated by injuries caused by handling and containment. The unsightly appearance of affected lobster tails significantly lowers their commercial value. Knowledge about TFN is limited. In this study we describe the morphological features of TFN and apply 6 common methods for evaluating the immune status of wild-caught Australasian red spiny lobsters Jasus edwardsii with and without TFN. The disease was more frequent in uropods than in telsons of the tail fan, and more extensive on the ventral versus the dorsal surfaces of the tail fan. Missing appendages (i.e. antenna, pereiopod or pleopod) were significantly more common and greater in number for individual lobsters affected with TFN versus those without, possibly as a result of handling in the fishery or as an indirect effect of the disease. Two immune parameters, total haemocyte count and phenoloxidase activity in the haemocyte lysate supernatant (HLS), were significantly compromised in lobsters with TFN. No differences were found in the other immune parameters, i.e. haemocyte viability, haemolymph bacterial count and the protein content of haemolymph plasma and HLS. The results are consistent with injury sustained during prior capture and handling that initiates TFN in these natural caught lobsters. These results raise some potential concerns about the fitness of lobsters in natural populations that are affected by TFN, and some potential solutions are proposed.
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Affiliation(s)
- Hua Zha
- Institute of Marine Science, University of Auckland, Auckland, New Zealand
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99
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Zhong S, Mao Y, Wang J, Liu M, Zhang M, Su Y. Transcriptome analysis of Kuruma shrimp (Marsupenaeus japonicus) hepatopancreas in response to white spot syndrome virus (WSSV) under experimental infection. FISH & SHELLFISH IMMUNOLOGY 2017; 70:710-719. [PMID: 28943297 DOI: 10.1016/j.fsi.2017.09.054] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Revised: 09/05/2017] [Accepted: 09/19/2017] [Indexed: 05/07/2023]
Abstract
Kuruma shrimp (Marsupenaeus japonicus) is one of the most valuable crustacean species in capture fisheries and mariculture in the Indo-West Pacific. White spot syndrome virus (WSSV) is a highly virulent pathogen which has seriously threatened Kuruma shrimp aquaculture sector. However, little information is available in relation to underlying mechanisms of host-virus interaction in Kuruma shrimp. In this study, we performed a transcriptome analysis from the hepatopancreas of Kuruma shrimp challenged by WSSV, using Illumina-based RNA-Seq. A total of 39,084,942 pair end (PE) reads, including 19,566,190 reads from WSSV-infected group and 19,518,752 reads from non-infected (control) group, were obtained and assembled into 33,215 unigenes with an average length of 503.7 bp and N50 of 601 bp. Approximately 17,000 unigenes were predicted and classified based on homology search, gene ontology, clusters of orthologous groups of proteins, and biological pathway mapping. Differentially expressed genes (DEGs), including 2150 up-regulated and 1931 down-regulated, were found. Among those, 805 DEGs were identified and categorized into 14 groups based on their possible functions. Many genes associated with JAK-STAT signaling pathways, Integrin-mediated signal transduction, Ras signaling pathways, apoptosis and phagocytosis were positively modified after WSSV challenge. The proteolytic cascades including Complement-like activation and Hemolymph coagulations likely participated in antiviral immune response. The transcriptome data from hepatopancreas of Kuruma shrimp under WSSV challenge provided comprehensive information for identifying novel immune related genes in this valuable crustacean species despite the absence of the genome database of crustaceans.
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Affiliation(s)
- Shengping Zhong
- Key Laboratory of Marine Biotechnology, Guangxi Institute of Oceanology, Beihai, 536000, China; State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, 361005, China
| | - Yong Mao
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, 361005, China
| | - Jun Wang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, 361005, China
| | - Min Liu
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, 361005, China
| | - Man Zhang
- College of Animal Science and Technology, Guangxi University, 530005, China
| | - Yongquan Su
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, 361005, China.
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100
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Runsaeng P, Puengyam P, Utarabhand P. A mannose-specific C-type lectin from Fenneropenaeus merguiensis exhibited antimicrobial activity to mediate shrimp innate immunity. Mol Immunol 2017; 92:87-98. [PMID: 29055189 DOI: 10.1016/j.molimm.2017.10.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 10/03/2017] [Accepted: 10/09/2017] [Indexed: 10/18/2022]
Abstract
Being one type of pattern recognition receptors (PRRs), lectins exhibit a crucial role in the defense mechanism of invertebrates which are deficient in an adaptive immune system. A new C-type lectin called FmLC3 was isolated from hepatopancreas of Fenneropenaeus merguiensis by cloning approaches, RT-PCR and 5' and 3' RACE (rapid amplification of cDNA ends). A full-length cDNA of FmLC3 contains 607 bp with one open reading frame of 480bp, encoding a 159-amino acids peptide. The predicted primary structure of FmLC3 is composed of a signal peptide, a carbohydrate recognition domain with an EPN motif and one Ca2+ binding site-2, including a double-loop region assisted by two conserved disulfide linkages. FmLC3 had a molecular mass of 17.96kDa and pI of 4.92. In normal or unchallenged shrimp, the mRNA expression of FmLC3 was detected only in hepatopancreas whilst its native proteins were found in hemolymph, heart, stomach and intestine but not in the expressed tissue, indicating that after being synthesized in hepatopancreas, FmLC3 would be secreted to other tissues. The significant up-regulation of FmLC3 was manifested in shrimp challenged with Vibrio harveyi or white spot syndrome virus. After knockdown with gene-specific double-stranded RNA and following by co-pathogenic inoculation, the FmLC3 expression was severely suppressed with coherence of increasing in cumulative mortality and reduction of the median lethal time. Recombinant FmLC3 (rFmLC3) had agglutinating activity towards diverse bacterial strains in a Ca2+-dependent manner. Its activity was inhibited by lipopolysaccharide and mannose, implying that FmLC3 was mannose-binding C-type lectin. Moreover, rFmLC3 could bind directly to various microbial strains with Ca2+-requirement. Otherwise, rFmLC3 exhibited the antimicrobial activity by inhibiting effectively the microbial growth in vitro. All these results signified that FmLC3 might act as PRR to recognize with a broad specificity for diverse pathogens, and contribute in shrimp immune response via the agglutination, binding and antimicrobial activity.
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Affiliation(s)
- Phanthipha Runsaeng
- Department of Biochemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Peerapong Puengyam
- Department of Biochemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Prapaporn Utarabhand
- Department of Biochemistry, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, Thailand.
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