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López-Freire S, Armisén M, Cruz MJ, Vidal C. Evaluation of the Cytokine Response Induced by Specific Allergen Immunotherapy in Patients with Vespa velutina Anaphylaxis. Int Arch Allergy Immunol 2024; 185:456-459. [PMID: 38412847 DOI: 10.1159/000536488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 01/22/2024] [Indexed: 02/29/2024] Open
Abstract
INTRODUCTION Changes in the cytokine profile from type 2 to type 1 together with the induction of regulatory cells are expected during hymenoptera venom immunotherapy (VIT). The present study was aimed to investigate the changes in type 1, type 2, and regulatory cytokines induced by a Vespula spp. VIT in patients with anaphylaxis to Vespa velutina. METHODS Twenty consecutive patients with anaphylaxis due to Vespa velutina were treated with Vespula spp. VIT. Serum cytokines (IL-4, IL-5, IL-10, IL-13, and IFN-ɣ) were measured at baseline, 6, and 12 months after starting VIT. RESULTS A significant increase in serum IFN-y was detected after 6 and 12 months of VIT. An increase in serum IL-10 and a decrease in IL-5 were observed after 12 months. IL-4 was undetectable all along the study, and an unexpected increase of IL-13 was present at 12 months of treatment. CONCLUSION Vespula spp. VIT seems to be able to induce a shift to type 1 cytokine production measured through IFN-y levels and IL-10 production after, at least, 6 and 12 months of VIT, respectively.
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Affiliation(s)
- Sara López-Freire
- Allergy Department, Complejo Hospitalario Universitario de Santiago, Faculty of Medicine, University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Margarita Armisén
- Allergy Department, Complejo Hospitalario Universitario de Santiago, Faculty of Medicine, University of Santiago de Compostela, Santiago de Compostela, Spain
| | | | - Carmen Vidal
- Allergy Department, Complejo Hospitalario Universitario de Santiago, Faculty of Medicine, University of Santiago de Compostela, Santiago de Compostela, Spain
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Ruiz-Leon B, Serrano P, Vidal C, Moreno-Aguilar C. Management of Double Sensitization to Vespids in Europe. Toxins (Basel) 2022; 14:toxins14020126. [PMID: 35202153 PMCID: PMC8880449 DOI: 10.3390/toxins14020126] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/24/2022] [Accepted: 02/03/2022] [Indexed: 12/10/2022] Open
Abstract
Wasp allergy with a diagnostic profile of double sensitizations to vespid venom is a frequent clinical problem in areas where different genera of wasps are present. Identification of the insect responsible for serious reactions poses a diagnostic challenge as the only effective treatment to date is immunotherapy based on the specific venom. In southern Europe, the double sensitization to Vespula and Polistes venoms is highly frequent. It has been shown that the major allergenic proteins (Phospholipase A1 and Antigen 5) share sequences across the different genera and species, which would be the cause of cross-reactivity. Additionally, the minor allergens (Dipeptidyl-peptidases, Vitellogenins) have been found to share partial sequence identity. Furthermore, venom contains other homologous proteins whose allergenic nature still remains to be clarified. The traditional diagnostic tools available are insufficient to discriminate between allergy to Vespula and Polistes in a high number of cases. IgE inhibition is the technique that best identifies the cross-reactivity. When a double sensitization has indeed been shown to exist or great uncertainty surrounds the primary sensitization, therapy with two venoms is advisable to guarantee the safety of the patient. In this case, a strategy involving alternate administration that combines effectiveness with efficiency is possible.
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Affiliation(s)
- Berta Ruiz-Leon
- Allergy Section of University Hospital Reina Sofia-IMIBIC, ARADyAL Network, National Institute of Health Carlos III, 14005 Cordoba, Spain; (B.R.-L.); (C.M.-A.)
| | - Pilar Serrano
- Allergy Section of University Hospital Reina Sofia-IMIBIC, ARADyAL Network, National Institute of Health Carlos III, 14005 Cordoba, Spain; (B.R.-L.); (C.M.-A.)
- Correspondence:
| | - Carmen Vidal
- Allergy Department of Complejo Hospitalario Universitario de Santiago de Compostela, 15706 Santiago de Compostela, Spain;
| | - Carmen Moreno-Aguilar
- Allergy Section of University Hospital Reina Sofia-IMIBIC, ARADyAL Network, National Institute of Health Carlos III, 14005 Cordoba, Spain; (B.R.-L.); (C.M.-A.)
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3
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Yang L, Qiu LM, Fang Q, Stanley DW, Ye GY. Cellular and humoral immune interactions between Drosophila and its parasitoids. Insect Sci 2021; 28:1208-1227. [PMID: 32776656 DOI: 10.1111/1744-7917.12863] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 07/09/2020] [Accepted: 07/30/2020] [Indexed: 05/26/2023]
Abstract
The immune interactions occurring between parasitoids and their host insects, especially in Drosophila-wasp models, have long been the research focus of insect immunology and parasitology. Parasitoid infestation in Drosophila is counteracted by its multiple natural immune defense systems, which include cellular and humoral immunity. Occurring in the hemocoel, cellular immune responses involve the proliferation, differentiation, migration and spreading of host hemocytes and parasitoid encapsulation by them. Contrastingly, humoral immune responses rely more heavily on melanization and on the Toll, Imd and Jak/Stat immune pathways associated with antimicrobial peptides along with stress factors. On the wasps' side, successful development is achieved by introducing various virulence factors to counteract immune responses of Drosophila. Some or all of these factors manipulate the host's immunity for successful parasitism. Here we review current knowledge of the cellular and humoral immune interactions between Drosophila and its parasitoids, focusing on the defense mechanisms used by Drosophila and the strategies evolved by parasitic wasps to outwit it.
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Affiliation(s)
- Lei Yang
- State Key Laboratory of Rice Biology & Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Li-Ming Qiu
- State Key Laboratory of Rice Biology & Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - Qi Fang
- State Key Laboratory of Rice Biology & Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
| | - David W Stanley
- USDA Agricultural Research Service, Biological Control of Insects Research Laboratory, Columbia, Missouri, United States
| | - Gong-Yin Ye
- State Key Laboratory of Rice Biology & Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, China
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4
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Zhou LZ, Wang RJ, Yan YY, Zeng S, Zou Z, Lu Z. Scavenger receptor B1 mediates phagocytosis and the antimicrobial peptide pathway in the endoparasitic wasp Micropilits mediator. Dev Comp Immunol 2021; 119:104039. [PMID: 33549640 DOI: 10.1016/j.dci.2021.104039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 01/29/2021] [Accepted: 01/31/2021] [Indexed: 06/12/2023]
Abstract
Scavenger receptors (SRs) are a family of pattern recognition receptors (PRRs) in the immune system. They are required for phagocytosis and act as co-receptors of Toll-like receptors to regulate immune signaling pathways in the fight against pathogens. Little is known about the function of SRs in insects. Here, we reported on a member of the SR family from the parasitic wasp Micropilits mediator (designated MmSR-B1) that is responsive to bacterial infection. The recombinant extracellular CD36 domain of MmSR-B1 produced in Escherichia coli cells is capable of binding to peptidoglycans and bacterial cells, causing agglutination of bacteria. Furthermore, we demonstrated that double-stranded RNA-mediated knockdown of MmSR-B1 impedes hemocyte phagocytosis and downregulates the expression of antimicrobial peptide (AMP) genes defensins and hymenoptaecins. Knockdown of MmSR-B1 led to increased death of the wasps when challenged by bacteria. Our study suggests that MmSR-B1 mediates phagocytosis and the production of AMPs in M. mediator wasps.
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Affiliation(s)
- Li-Zhen Zhou
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China.
| | - Rui-Juan Wang
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China.
| | - You-Ying Yan
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China.
| | - Shuocheng Zeng
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
| | - Zhen Zou
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.
| | - Zhiqiang Lu
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, Shaanxi, China.
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Beani L, Mariotti Lippi M, Mulinacci N, Manfredini F, Cecchi L, Giuliani C, Tani C, Meriggi N, Cavalieri D, Cappa F. Altered feeding behavior and immune competence in paper wasps: A case of parasite manipulation? PLoS One 2020; 15:e0242486. [PMID: 33326432 PMCID: PMC7743958 DOI: 10.1371/journal.pone.0242486] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 11/03/2020] [Indexed: 12/11/2022] Open
Abstract
Paper wasps (Polistes dominula), parasitized by the strepsipteran Xenos vesparum, are castrated and desert the colony to gather on plants where the parasite mates and releases primary larvae, thus completing its lifecycle. One of these plants is the trumpet creeper Campsis radicans: in a previous study the majority of all wasps collected from this plant were parasitized and focused their foraging activity on C. radicans buds. The unexpected prevalence and unusual feeding strategy prompted us to investigate the influence of this plant on wasp behavior and physiology through a multidisciplinary approach. First, in a series of laboratory bioassays, we observed that parasitized wasps spent more time than non-parasitized ones on fresh C. radicans buds, rich of extra-floral nectaries (EFNs), while the same wasps ignored treated buds that lacked nectar drops. Then, we described the structure and ultra-structure of EFNs secreting cells, compatible with the synthesis of phenolic compounds. Subsequently, we analysed extracts from different bud tissues by HPLC-DAD-MS and found that verbascoside was the most abundant bioactive molecule in those tissues rich in EFNs. Finally, we tested the immune-stimulant properties of verbascoside, as the biochemical nature of this compound indicates it might function as an antibacterial and antioxidant. We measured bacterial clearance in wasps, as a proxy for overall immune competence, and observed that it was enhanced after administration of verbascoside-even more so if the wasp was parasitized. We hypothesize that the parasite manipulates wasp behavior to preferentially feed on C. radicans EFNs, since the bioactive properties of verbascoside likely increase host survival and thus the parasite own fitness.
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Affiliation(s)
- Laura Beani
- Dipartimento di Biologia, Università di Firenze, Firenze, Italia
- * E-mail: (LB); (DC)
| | | | - Nadia Mulinacci
- Dipartimento di NEUROFARBA, Università di Firenze, Firenze, Italia
| | - Fabio Manfredini
- School of Biological Sciences, Royal Holloway University of London, Egham, United Kingdom
- School of Biological Sciences, University of Aberdeen, Aberdeen, United Kingdom
| | - Lorenzo Cecchi
- Dipartimento di NEUROFARBA, Università di Firenze, Firenze, Italia
| | - Claudia Giuliani
- Dipartimento di Scienze Farmaceutiche, Università degli Studi di Milano, Milano, Italia
| | - Corrado Tani
- Dipartimento di NEUROFARBA, Università di Firenze, Firenze, Italia
| | - Niccolò Meriggi
- Dipartimento di Biologia, Università di Firenze, Firenze, Italia
| | - Duccio Cavalieri
- Dipartimento di Biologia, Università di Firenze, Firenze, Italia
- * E-mail: (LB); (DC)
| | - Federico Cappa
- Dipartimento di Biologia, Università di Firenze, Firenze, Italia
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6
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Du J, Lin Z, Volovych O, Lu Z, Zou Z. A RhoGAP venom protein from Microplitis mediator suppresses the cellular response of its host Helicoverpa armigera. Dev Comp Immunol 2020; 108:103675. [PMID: 32173445 DOI: 10.1016/j.dci.2020.103675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 03/09/2020] [Accepted: 03/09/2020] [Indexed: 06/10/2023]
Abstract
Female parasitoid wasps normally inject virulence factors together with eggs into their host to counter host immunity defenses. A newly identified RhoGAP protein in the venom of Microplitis mediator compromises the cellular immunity of its host, Helicoverpa armigera. RhoGAP1 proteins entered H. armigera hemocytes, and the host cellular cytoskeleton was disrupted. Depletion of MmGAP1 by injection of dsRNA or antibody increased the wasp egg encapsulation rate. An immunoprecipitation assay of overexpressed MmGAP1 protein in a Helicoverpa cell line showed that MmGAP1 interacts with many cellular cytoskeleton associated proteins as well as Rho GTPases. A yeast two-hybrid and a pull-down assay demonstrated that MmGAP1 interacts with H. armigera RhoA and Cdc42. These results show that the RhoGAP protein in M. mediator can destroy the H. armigera hemocyte cellular cytoskeleton, restrain host cellular immune defense, and increase the probability of successful parasitism.
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Affiliation(s)
- Jie Du
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhe Lin
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
| | - Olga Volovych
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhiqiang Lu
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhen Zou
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China; CAS Center for Excellence in Biotic Interactions, University of Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, Huzhou University, Huzhou, 311300, China.
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7
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Dennis AB, Ballesteros GI, Robin S, Schrader L, Bast J, Berghöfer J, Beukeboom LW, Belghazi M, Bretaudeau A, Buellesbach J, Cash E, Colinet D, Dumas Z, Errbii M, Falabella P, Gatti JL, Geuverink E, Gibson JD, Hertaeg C, Hartmann S, Jacquin-Joly E, Lammers M, Lavandero BI, Lindenbaum I, Massardier-Galata L, Meslin C, Montagné N, Pak N, Poirié M, Salvia R, Smith CR, Tagu D, Tares S, Vogel H, Schwander T, Simon JC, Figueroa CC, Vorburger C, Legeai F, Gadau J. Functional insights from the GC-poor genomes of two aphid parasitoids, Aphidius ervi and Lysiphlebus fabarum. BMC Genomics 2020; 21:376. [PMID: 32471448 PMCID: PMC7257214 DOI: 10.1186/s12864-020-6764-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/30/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Parasitoid wasps have fascinating life cycles and play an important role in trophic networks, yet little is known about their genome content and function. Parasitoids that infect aphids are an important group with the potential for biological control. Their success depends on adapting to develop inside aphids and overcoming both host aphid defenses and their protective endosymbionts. RESULTS We present the de novo genome assemblies, detailed annotation, and comparative analysis of two closely related parasitoid wasps that target pest aphids: Aphidius ervi and Lysiphlebus fabarum (Hymenoptera: Braconidae: Aphidiinae). The genomes are small (139 and 141 Mbp) and the most AT-rich reported thus far for any arthropod (GC content: 25.8 and 23.8%). This nucleotide bias is accompanied by skewed codon usage and is stronger in genes with adult-biased expression. AT-richness may be the consequence of reduced genome size, a near absence of DNA methylation, and energy efficiency. We identify missing desaturase genes, whose absence may underlie mimicry in the cuticular hydrocarbon profile of L. fabarum. We highlight key gene groups including those underlying venom composition, chemosensory perception, and sex determination, as well as potential losses in immune pathway genes. CONCLUSIONS These findings are of fundamental interest for insect evolution and biological control applications. They provide a strong foundation for further functional studies into coevolution between parasitoids and their hosts. Both genomes are available at https://bipaa.genouest.org.
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Affiliation(s)
- Alice B Dennis
- Department of Aquatic Ecology, Eawag, 8600, Dübendorf, Switzerland.
- Institute of Integrative Biology, ETH Zürich, 8092, Zürich, Switzerland.
- Institute of Biochemistry and Biology, University of Potsdam, 14476, Potsdam, Germany.
| | - Gabriel I Ballesteros
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
- Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Talca, Chile
- Laboratorio de Control Biológico, Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
| | - Stéphanie Robin
- IGEPP, Agrocampus Ouest, INRAE, Université de Rennes, 35650, Le Rheu, France
- Université de Rennes 1, INRIA, CNRS, IRISA, 35000, Rennes, France
| | - Lukas Schrader
- Institute for Evolution and Biodiversity, Universität Münster, Münster, Germany
| | - Jens Bast
- Department of Ecology and Evolution, Université de Lausanne, 1015, Lausanne, Switzerland
- Institute of Zoology, Universität zu Köln, 50674, Köln, Germany
| | - Jan Berghöfer
- Institute for Evolution and Biodiversity, Universität Münster, Münster, Germany
| | - Leo W Beukeboom
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Maya Belghazi
- Aix-Marseille Univ, CNRS, INP, Inst Neurophysiopathol, PINT, PFNT, Marseille, France
| | - Anthony Bretaudeau
- IGEPP, Agrocampus Ouest, INRAE, Université de Rennes, 35650, Le Rheu, France
- Université de Rennes 1, INRIA, CNRS, IRISA, 35000, Rennes, France
| | - Jan Buellesbach
- Institute for Evolution and Biodiversity, Universität Münster, Münster, Germany
| | - Elizabeth Cash
- Department of Environmental Science, Policy, & Management, University of California, Berkeley, Berkeley, CA, 94720, USA
| | | | - Zoé Dumas
- Department of Ecology and Evolution, Université de Lausanne, 1015, Lausanne, Switzerland
| | - Mohammed Errbii
- Institute for Evolution and Biodiversity, Universität Münster, Münster, Germany
| | | | - Jean-Luc Gatti
- Université Côte d'Azur, INRAE, CNRS, ISA, Sophia Antipolis, France
| | - Elzemiek Geuverink
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - Joshua D Gibson
- Department of Environmental Science, Policy, & Management, University of California, Berkeley, Berkeley, CA, 94720, USA
- Department of Biology, Georgia Southern University, Statesboro, GA, 30460, USA
| | - Corinne Hertaeg
- Department of Aquatic Ecology, Eawag, 8600, Dübendorf, Switzerland
- Department of Environmental Systems Sciences, D-USYS, ETH Zürich, Zürich, Switzerland
| | - Stefanie Hartmann
- Institute of Biochemistry and Biology, University of Potsdam, 14476, Potsdam, Germany
| | - Emmanuelle Jacquin-Joly
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université Paris Diderot, Institute of Ecology and Environmental Sciences of Paris, iEES-Paris, F-78000, Versailles, France
| | - Mark Lammers
- Institute for Evolution and Biodiversity, Universität Münster, Münster, Germany
| | - Blas I Lavandero
- Laboratorio de Control Biológico, Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
| | - Ina Lindenbaum
- Institute for Evolution and Biodiversity, Universität Münster, Münster, Germany
| | | | - Camille Meslin
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université Paris Diderot, Institute of Ecology and Environmental Sciences of Paris, iEES-Paris, F-78000, Versailles, France
| | - Nicolas Montagné
- INRAE, Sorbonne Université, CNRS, IRD, UPEC, Université Paris Diderot, Institute of Ecology and Environmental Sciences of Paris, iEES-Paris, F-78000, Versailles, France
| | - Nina Pak
- Department of Environmental Science, Policy, & Management, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Marylène Poirié
- Université Côte d'Azur, INRAE, CNRS, ISA, Sophia Antipolis, France
| | - Rosanna Salvia
- Department of Sciences, University of Basilicata, 85100, Potenza, Italy
| | - Chris R Smith
- Department of Biology, Earlham College, Richmond, IN, 47374, USA
| | - Denis Tagu
- IGEPP, Agrocampus Ouest, INRAE, Université de Rennes, 35650, Le Rheu, France
| | - Sophie Tares
- Université Côte d'Azur, INRAE, CNRS, ISA, Sophia Antipolis, France
| | - Heiko Vogel
- Department of Entomology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Tanja Schwander
- Department of Ecology and Evolution, Université de Lausanne, 1015, Lausanne, Switzerland
| | | | - Christian C Figueroa
- Instituto de Ciencias Biológicas, Universidad de Talca, Talca, Chile
- Centre for Molecular and Functional Ecology in Agroecosystems, Universidad de Talca, Talca, Chile
| | - Christoph Vorburger
- Department of Aquatic Ecology, Eawag, 8600, Dübendorf, Switzerland
- Institute of Integrative Biology, ETH Zürich, 8092, Zürich, Switzerland
| | - Fabrice Legeai
- IGEPP, Agrocampus Ouest, INRAE, Université de Rennes, 35650, Le Rheu, France
- Université de Rennes 1, INRIA, CNRS, IRISA, 35000, Rennes, France
| | - Jürgen Gadau
- Institute for Evolution and Biodiversity, Universität Münster, Münster, Germany.
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Sharko FS, Nedoluzhko AV, Lê BM, Tsygankova SV, Boulygina ES, Rastorguev SM, Sokolov AS, Rodriguez F, Mazur AM, Polilov AA, Benton R, Evgen'ev MB, Arkhipova IR, Prokhortchouk EB, Skryabin KG. A partial genome assembly of the miniature parasitoid wasp, Megaphragma amalphitanum. PLoS One 2019; 14:e0226485. [PMID: 31869362 PMCID: PMC6927652 DOI: 10.1371/journal.pone.0226485] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 11/26/2019] [Indexed: 12/18/2022] Open
Abstract
Body size reduction, also known as miniaturization, is an important evolutionary process that affects a number of physiological and phenotypic traits and helps animals conquer new ecological niches. However, this process is poorly understood at the molecular level. Here, we report genomic and transcriptomic features of arguably the smallest known insect-the parasitoid wasp, Megaphragma amalphitanum (Hymenoptera: Trichogrammatidae). In contrast to expectations, we find that the genome and transcriptome sizes of this parasitoid wasp are comparable to other members of the Chalcidoidea superfamily. Moreover, compared to other chalcid wasps the gene content of M. amalphitanum is remarkably conserved. Intriguingly, we observed significant changes in M. amalphitanum transposable element dynamics over time, in which an initial burst was followed by suppression of activity, possibly due to a recent reinforcement of the genome defense machinery. Overall, while the M. amalphitanum genomic data reveal certain features that may be linked to the unusual biological properties of this organism, miniaturization is not associated with a large decrease in genome complexity.
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Affiliation(s)
- Fedor S. Sharko
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
- National Research Center “Kurchatov Institute”, Moscow, Russia
| | - Artem V. Nedoluzhko
- National Research Center “Kurchatov Institute”, Moscow, Russia
- Nord University, Faculty of Biosciences and Aquaculture, Bodø, Norway
| | - Brandon M. Lê
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
| | | | | | | | - Alexey S. Sokolov
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Fernando Rodriguez
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
| | - Alexander M. Mazur
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
| | - Alexey A. Polilov
- Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
| | - Richard Benton
- Center for Integrative Genomics, Faculty of Biology and Medicine, University of Lausanne, Lausanne, Switzerland
| | | | - Irina R. Arkhipova
- Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts, United States of America
| | - Egor B. Prokhortchouk
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
- Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
| | - Konstantin G. Skryabin
- Institute of Bioengineering, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia
- National Research Center “Kurchatov Institute”, Moscow, Russia
- Lomonosov Moscow State University, Faculty of Biology, Moscow, Russia
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9
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Leitão AB, Bian X, Day JP, Pitton S, Demir E, Jiggins FM. Independent effects on cellular and humoral immune responses underlie genotype-by-genotype interactions between Drosophila and parasitoids. PLoS Pathog 2019; 15:e1008084. [PMID: 31589659 PMCID: PMC6797232 DOI: 10.1371/journal.ppat.1008084] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Revised: 10/17/2019] [Accepted: 09/16/2019] [Indexed: 11/18/2022] Open
Abstract
It is common to find abundant genetic variation in host resistance and parasite infectivity within populations, with the outcome of infection frequently depending on genotype-specific interactions. Underlying these effects are complex immune defenses that are under the control of both host and parasite genes. We have found extensive variation in Drosophila melanogaster's immune response against the parasitoid wasp Leptopilina boulardi. Some aspects of the immune response, such as phenoloxidase activity, are predominantly affected by the host genotype. Some, such as upregulation of the complement-like protein Tep1, are controlled by the parasite genotype. Others, like the differentiation of immune cells called lamellocytes, depend on the specific combination of host and parasite genotypes. These observations illustrate how the outcome of infection depends on independent genetic effects on different aspects of host immunity. As parasite-killing results from the concerted action of different components of the immune response, these observations provide a physiological mechanism to generate phenomena like epistasis and genotype-interactions that underlie models of coevolution.
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Affiliation(s)
| | - Xueni Bian
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Jonathan P. Day
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Simone Pitton
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
| | - Eşref Demir
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
- Antalya Bilim University, Faculty of Engineering, Department of Material Science and Nanotechnology Engineering, Dosemealti, Antalya, Turkey
| | - Francis M. Jiggins
- Department of Genetics, University of Cambridge, Cambridge, United Kingdom
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10
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Cui JH, Dong SM, Chen CX, Xiao W, Cai QC, Zhang LD, He HJ, Zhang W, Zhang XW, Liu T, Ding L, Yang Y, Lai JH, Zhu QS, Luo KJ. Microplitis bicoloratus bracovirus modulates innate immune suppression through the eIF4E-eIF4A axis in the insect Spodoptera litura. Dev Comp Immunol 2019; 95:101-107. [PMID: 30776419 DOI: 10.1016/j.dci.2019.02.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 02/14/2019] [Accepted: 02/14/2019] [Indexed: 06/09/2023]
Abstract
Eukaryotic initiation factor 4E (eIF4E) is regulated during the innate immune response. However, its translational regulation under innate immune suppression remains largely unexplored. Microplitis bicoloratus bracovirus (MbBV), a symbiotic virus harbored by the parasitoid wasp, Microplitis bicoloratus, suppresses innate immunity in parasitized Spodoptera litura. Here, we generated eIF4E dsRNA and used it to silence the eIF4E gene of S. litura, resulting in a hallmark immunosuppressive phenotype characterized by increased apoptosis of hemocytes and retardation of head capsule width development. In response to natural parasitism, loss of eIF4E function was associated with similar immunosuppression, and we detected no significant differences between the response to parasitism and treatment with eIF4E RNAi. Under MbBV infection, eIF4E overexpression significantly suppressed MbBV-induced increase in apoptosis and suppressed apoptosis to the same extent as co-expression of both eIF4E and eIF4A. There were no significant differences between MbBV-infected and uninfected larvae in which eIF4E was overexpressed. More importantly, in the eIF4E RNAi strain, eIF4A RNAi did not increase apoptosis. Collectively, our results indicate that eIF4E plays a nodal role in the MbBV-suppressed innate immune response via the eIF4E-eIF4A axis.
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Affiliation(s)
- Ji-Hui Cui
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Shu-Mei Dong
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Chang-Xu Chen
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Wei Xiao
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Qiu-Cheng Cai
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Li-Dan Zhang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Hao-Juan He
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Wei Zhang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Xue-Wen Zhang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Tian Liu
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Lei Ding
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Yang Yang
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Jian-Hua Lai
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China
| | - Qi-Shun Zhu
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China
| | - Kai-Jun Luo
- School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Key Laboratory of the University in Yunnan Province for International Cooperation in Intercellular Communications and Regulations, Yunnan University, Kunming, 650500, PR China; Biocontrol Engineering Research Centre of Crop Disease & Pest in Yunnan Province, Kunming, 650500, PR China; Key Laboratory for Biochemistry and Molecular Biology and School of Life Sciences, Yunnan University, Kunming, 650500, PR China; Animal Genetic Diversity and Evolution of High Education in Yunnan Province, School of Life Sciences, Yunnan University, Kunming, 650500, PR China.
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Di Lelio I, Illiano A, Astarita F, Gianfranceschi L, Horner D, Varricchio P, Amoresano A, Pucci P, Pennacchio F, Caccia S. Evolution of an insect immune barrier through horizontal gene transfer mediated by a parasitic wasp. PLoS Genet 2019; 15:e1007998. [PMID: 30835731 PMCID: PMC6420030 DOI: 10.1371/journal.pgen.1007998] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 03/15/2019] [Accepted: 01/29/2019] [Indexed: 12/22/2022] Open
Abstract
Genome sequencing data have recently demonstrated that eukaryote evolution has been remarkably influenced by the acquisition of a large number of genes by horizontal gene transfer (HGT) across different kingdoms. However, in depth-studies on the physiological traits conferred by these accidental DNA acquisitions are largely lacking. Here we elucidate the functional role of Sl gasmin, a gene of a symbiotic virus of a parasitic wasp that has been transferred to an ancestor of the moth species Spodoptera littoralis and domesticated. This gene is highly expressed in circulating immune cells (haemocytes) of larval stages, where its transcription is rapidly boosted by injection of microorganisms into the body cavity. RNAi silencing of Sl gasmin generates a phenotype characterized by a precocious suppression of phagocytic activity by haemocytes, which is rescued when these immune cells are incubated in plasma samples of control larvae, containing high levels of the encoded protein. Proteomic analysis demonstrates that the protein Sl gasmin is released by haemocytes into the haemolymph, where it opsonizes the invading bacteria to promote their phagocytosis, both in vitro and in vivo. Our results show that important physiological traits do not necessarily originate from evolution of pre-existing genes, but can be acquired by HGT events, through unique pathways of symbiotic evolution. These findings indicate that insects can paradoxically acquire selective advantages with the help of their natural enemies.
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Affiliation(s)
- Ilaria Di Lelio
- Department of Agricultural Sciences, University of Napoli Federico II, Portici (NA), Italy
| | - Anna Illiano
- Department of Chemical Sciences, University of Napoli Federico II, Napoli, Italy
| | - Federica Astarita
- Department of Agricultural Sciences, University of Napoli Federico II, Portici (NA), Italy
| | | | - David Horner
- Department of Biosciences, University of Milano, Milano, Italy
| | - Paola Varricchio
- Department of Agricultural Sciences, University of Napoli Federico II, Portici (NA), Italy
| | - Angela Amoresano
- Department of Chemical Sciences, University of Napoli Federico II, Napoli, Italy
| | - Pietro Pucci
- Department of Chemical Sciences, University of Napoli Federico II, Napoli, Italy
| | - Francesco Pennacchio
- Department of Agricultural Sciences, University of Napoli Federico II, Portici (NA), Italy
| | - Silvia Caccia
- Department of Agricultural Sciences, University of Napoli Federico II, Portici (NA), Italy
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Valanne S, Salminen TS, Järvelä-Stölting M, Vesala L, Rämet M. Immune-inducible non-coding RNA molecule lincRNA-IBIN connects immunity and metabolism in Drosophila melanogaster. PLoS Pathog 2019; 15:e1007504. [PMID: 30633769 PMCID: PMC6345493 DOI: 10.1371/journal.ppat.1007504] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 01/24/2019] [Accepted: 12/05/2018] [Indexed: 01/09/2023] Open
Abstract
Non-coding RNAs have important roles in regulating physiology, including immunity. Here, we performed transcriptome profiling of immune-responsive genes in Drosophila melanogaster during a Gram-positive bacterial infection, concentrating on long non-coding RNA (lncRNA) genes. The gene most highly induced by a Micrococcus luteus infection was CR44404, named Induced by Infection (lincRNA-IBIN). lincRNA-IBIN is induced by both Gram-positive and Gram-negative bacteria in Drosophila adults and parasitoid wasp Leptopilina boulardi in Drosophila larvae, as well as by the activation of the Toll or the Imd pathway in unchallenged flies. We show that upon infection, lincRNA-IBIN is expressed in the fat body, in hemocytes and in the gut, and its expression is regulated by NF-κB signaling and the chromatin modeling brahma complex. In the fat body, overexpression of lincRNA-IBIN affected the expression of Toll pathway -mediated genes. Notably, overexpression of lincRNA-IBIN in unchallenged flies elevated sugar levels in the hemolymph by enhancing the expression of genes important for glucose retrieval. These data show that lncRNA genes play a role in Drosophila immunity and indicate that lincRNA-IBIN acts as a link between innate immune responses and metabolism.
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Affiliation(s)
- Susanna Valanne
- Laboratory of Experimental Immunology, BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Tiina S. Salminen
- Laboratory of Experimental Immunology, BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Mirva Järvelä-Stölting
- Laboratory of Experimental Immunology, BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Laura Vesala
- Laboratory of Experimental Immunology, BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
| | - Mika Rämet
- Laboratory of Experimental Immunology, BioMediTech Institute and Faculty of Medicine and Life Sciences, University of Tampere, Tampere, Finland
- PEDEGO Research Unit, and Medical Research Center Oulu, University of Oulu, and Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
- Department of Pediatrics, Tampere University Hospital, Tampere, Finland
- * E-mail:
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Gattinger P, Mittermann I, Lupinek C, Hofer G, Keller W, Bidovec Stojkovic U, Korosec P, Koessler C, Novak N, Valenta R. Recombinant glycoproteins resembling carbohydrate-specific IgE epitopes from plants, venoms and mites. EBioMedicine 2018; 39:33-43. [PMID: 30581149 PMCID: PMC6354707 DOI: 10.1016/j.ebiom.2018.12.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 11/20/2018] [Accepted: 12/03/2018] [Indexed: 12/03/2022] Open
Abstract
Background N-linked glycans present in venoms, pollen and mites are recognized by IgE antibodies from >20% of allergic patients but have low or no allergenic activity. Objectives To engineer recombinant glycoproteins resembling carbohydrate-specific IgE epitopes from venoms, pollen and mites which can discriminate carbohydrate-specific IgE from allergenic, peptide-specific IgE. Methods One or two N-glycosylation sites were engineered into the N-terminus of the non-allergenic protein horse heart myoglobin (HHM) using synthetic gene technology. HHM 1 and HHM 2 containing one or two N-glycosylation sites were expressed in baculovirus-infected High-Five™ insect cells and a non-glycosylated version (HHM 0) was obtained by mutating the glycosylation motif. Recombinant HHM proteins were analyzed regarding fold and aggregation by circular dichroism and gel filtration, respectively. IgE reactivity was assessed by ELISA, immunoblotting and quantitative ImmunoCAP measurements. IgE inhibition assays were performed to study cross-reactivity with venom, plant and mite-derived carbohydrate IgE epitopes. Results HHM-glycovariants were expressed and purified from insect cells as monomeric and folded proteins. The HHM-glycovariants exhibited strictly carbohydrate-specific IgE reactivity, designed to quantify carbohydrate-specific IgE and resembled IgE epitopes of pollen, venom and mite-derived carbohydrates. IgE-reactivity and inhibition experiments established a hierarchy of plant glcyoallergens (nPhl p 4 > nCyn d 1 > nPla a 2 > nJug r 2 > nCup a 1 > nCry j 1) indicating a hitherto unknown heterogeneity of carbohydrate IgE epitopes in plants which were completely represented by HHM 2. Conclusion Defined recombinant HHM-glycoproteins resembling carbohydrate-specific IgE epitopes from plants, venoms and mites were engineered which made it possible to discriminate carbohydrate- from peptide-specific IgE reactivity.
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Affiliation(s)
- Pia Gattinger
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Irene Mittermann
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Christian Lupinek
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Gerhard Hofer
- Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria
| | - Walter Keller
- Institute of Molecular Biosciences, BioTechMed Graz, University of Graz, Graz, Austria
| | | | - Peter Korosec
- University Clinic of Respiratory and Allergic Diseases, Golnik, Slovenia
| | - Christine Koessler
- Department of Dermatology and Allergy, University of Bonn, Bonn, Germany
| | - Natalija Novak
- Department of Dermatology and Allergy, University of Bonn, Bonn, Germany
| | - Rudolf Valenta
- Division of Immunopathology, Department of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria; NRC Institute of Immunology FMBA of Russia, Moscow, Russia; Laboratory for Immunopathology, Department of Clinical Immunology and Allergy, Sechenov First Moscow State Medical University, Moscow, Russia.
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de Souza AR, Guimarães Simões T, Rantala MJ, Fernando Santos E, Lino-Netto J, do Nascimento FS. Sexual ornaments reveal the strength of melanization immune response and longevity of male paper wasps. J Insect Physiol 2018; 109:163-168. [PMID: 29870690 DOI: 10.1016/j.jinsphys.2018.06.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 05/25/2018] [Accepted: 06/01/2018] [Indexed: 06/08/2023]
Abstract
It has been recently suggested that female mate choice, based on sexually selected ornaments, is an important component of social wasps' reproductive biology. The correlates of male ornaments that could be of a female's interest, however, remain to be investigated. Males of the Neotropical paper wasp Polistes simillimus have sexually dimorphic melanin-based black spots on their faces. In this species, male spots work like sexual ornaments, as it has been experimentally demonstrated that females prefer sexual partners with a higher proportion of black pigment on their faces. We have shown that, under laboratory conditions, male sexual ornamentation positively predicts the strength of the melanization immune response and longevity. Therefore, in P. simillimus, melanin-based facial patterns (ornaments) seem to be honest indicators of male quality.
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Affiliation(s)
- André Rodrigues de Souza
- Departamento de Biologia, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil; Departamento de Entomologia, Universidade Federal de Viçosa, Minas Gerais, Brazil.
| | | | - Markus J Rantala
- Department of Biology and Turku Brain and Mind Centre, University of Turku, Turku, Finland
| | - Eduardo Fernando Santos
- Departamento de Zoologia e Botânica, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, Brazil
| | - José Lino-Netto
- Departamento de Biologia Geral, Universidade Federal de Viçosa, Minas Gerais, Brazil
| | - Fábio Santos do Nascimento
- Departamento de Biologia, Faculdade de Filosofia Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, São Paulo, Brazil
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Lindström I, Karvonen H, Suuronen K, Suojalehto H. Occupational asthma from biological pest control in greenhouses. J Allergy Clin Immunol Pract 2018; 6:692-694.e3. [PMID: 29030000 DOI: 10.1016/j.jaip.2017.08.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 08/11/2017] [Accepted: 08/17/2017] [Indexed: 06/07/2023]
Affiliation(s)
- Irmeli Lindström
- Department of Occupational Medicine, Finnish Institute of Occupational Health, Helsinki, Finland.
| | | | - Katri Suuronen
- Department of Occupational Medicine, Finnish Institute of Occupational Health, Helsinki, Finland
| | - Hille Suojalehto
- Department of Occupational Medicine, Finnish Institute of Occupational Health, Helsinki, Finland
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Affiliation(s)
- Theo Gülen
- Department of Respiratory Medicine and Allergy, Karolinska University Hospital Huddinge, SE-141 86 Stockholm, Sweden. , ,
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Savi E, Incorvaia C, Boni E, Mauro M, Peveri S, Pravettoni V, Quercia O, Reccardini F, Montagni M, Pessina L, Ridolo E. Which immunotherapy product is better for patients allergic to Polistes venom? A laboratory and clinical study. PLoS One 2017; 12:e0180270. [PMID: 28686638 PMCID: PMC5501507 DOI: 10.1371/journal.pone.0180270] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 06/13/2017] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Venom immunotherapy (VIT) is highly effective in preventing allergic reactions to insect stings, but the appropriate venom must be used to achieve clinical protection. In patients with multiple positive results to venoms, molecular allergy diagnostics or CAP-inhibition may identify the causative venom. Concerning allergy to venom from Polistes spp. it has been proposed that only the European species P. dominulus should be used for VIT. However, this recommendation is not present in any international guideline. Using both laboratory and clinical data, we aimed to evaluate the reliability of this proposal. METHODS We performed an in vitro study using CAP-inhibition to determine sensitization of 19 patients allergic to Polistes venom. The clinical study included 191 patients with positive tests to Polistes treated with VIT, 102 were treated with P. dominulus and 89 were treated with a mix of American Polistes (mAP). RESULTS The difference in % of inhibition was significant concerning inhibition of P. dominulus sIgE by P. dominulus venom (79.8%) compared with inhibition by mAP venom (64.2%) and not significant concerning the inhibition of mAP sIgE by P. dominulus venom (80.1%) and by mAP venom (73.6%). Instead, the clinical protection from stings was not statistically different between the two kinds of venom. CONCLUSION The data from CAP inhibition would suggest that the choice of either P. dominulus venom or mAP venom for VIT is appropriate in patients with CAP inhibition higher than 70%, but the clinical data show the same odds of protection from stings using for VIT P. dominulus or mAP venom.
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Affiliation(s)
- Eleonora Savi
- Allergy Dept. Unit, G. Da Saliceto Hospital, AUSL, Piacenza, Italy
| | | | - Elisa Boni
- Allergy Unit, Sant’Anna Hospital, ASST Lariana, Como, Italy
| | - Marina Mauro
- Allergy Unit, Sant’Anna Hospital, ASST Lariana, Como, Italy
| | - Silvia Peveri
- Allergy Dept. Unit, G. Da Saliceto Hospital, AUSL, Piacenza, Italy
| | - Valerio Pravettoni
- Clinical Allergy and Immunology Unit, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Oliviero Quercia
- Unità ad Alta Specializzazione di Allergologia, Ospedale di Faenza (RA), Faenza, Italy
| | - Federico Reccardini
- Azienda Sanitaria Universitaria Integrata Udine, SOC Pneumologia Fisiopatologia Respiratoria, Udine, Italy
| | | | - Laura Pessina
- Cardiac/Pulmonary Rehabilitation, ASST Gaetano Pini/CTO, Milan, Italy
| | - Erminia Ridolo
- Department of Medicine and Surgery, University of Parma, Parma, Italy
- * E-mail:
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Wang RJ, Lin Z, Jiang H, Li J, Saha TT, Lu Z, Lu Z, Zou Z. Comparative analysis of peptidoglycan recognition proteins in endoparasitoid wasp Microplitis mediator. Insect Sci 2017; 24:2-16. [PMID: 26549814 DOI: 10.1111/1744-7917.12290] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/29/2015] [Indexed: 06/05/2023]
Abstract
Peptidoglycan recognition proteins (PGRPs) are a family of innate immune receptors that specifically recognize peptidoglycans (PGNs) on the surface of a number of pathogens. Here, we have identified and characterized six PGRPs from endoparasitoid wasp, Microplitis mediator (MmePGRPs). To understand the roles of PGRPs in parasitoid wasps, we analyzed their evolutionary relationship and orthology, expression profiles during different developmental stages, and transcriptional expression following infection with Gram-positive and -negative bacteria and a fungus. MmePGRP-S1 was significantly induced in response to pathogenic infection. This prompted us to evaluate the effects of RNA interference mediated gene specific knockdown of MmePGRP-S1. The knockdown of MmePGRP-S1 (iMmePGRP-S1) dramatically affected wasps' survival following challenge by Micrococcus luteus, indicating the involvement of this particular PGRP in immune responses against Gram-positive bacteria. This action is likely to be mediated by the Toll pathway, but the mechanism remains to be determined. MmePGRP-S1 does not play a significant role in anti-fungal immunity as indicated by the survival rate of iMmePGRP-S1 wasps. This study provides a comprehensive characterization of PGRPs in the economically important hymenopteran species M. mediator.
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Affiliation(s)
- Rui-Juan Wang
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing
| | - Zhe Lin
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing
| | - Hong Jiang
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing
| | - Jiancheng Li
- Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, IPM Center of Hebei Province, Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Baoding, China
| | - Tusar T Saha
- Department of Entomology, University of California, Riverside, CA, USA
| | - Ziyun Lu
- Key Laboratory of Integrated Pest Management on Crops in Northern Region of North China, Ministry of Agriculture, IPM Center of Hebei Province, Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Baoding, China
| | - Zhiqiang Lu
- Department of Entomology, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi
| | - Zhen Zou
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing
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19
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Kumar S, Gu X, Kim Y. A viral histone H4 suppresses insect insulin signal and delays host development. Dev Comp Immunol 2016; 63:66-77. [PMID: 27216029 DOI: 10.1016/j.dci.2016.05.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 05/18/2016] [Accepted: 05/18/2016] [Indexed: 06/05/2023]
Abstract
Parasitization by an endoparasitoid wasp, Cotesia plutellae, alters host development of Plutella xylostella by extending larval period and preventing metamorphosis. Insulin signal plays a crucial role in mediating insect development and controlling blood sugar level in insects. In this study, three insulin-like peptide genes (PxILP1-3) were predicted from the genome of P. xylostella. However, only PxILP1 was confirmed to be expressed in P. xylostella. Starvation suppressed the expression level of PxILP1 and up-regulated plasma trehalose level. RNA interference against PxILP1 mimicked starvation effect and extended the larval period of P. xylostella. Parasitized larvae exhibited significantly lower levels of PxILP1 expression compared to nonparasitized larvae. Injection of wasp-symbiotic polydnavirus C. plutellae bracovirus (CpBV) also suppressed PxILP1 expression and extended the larval period. Injection of a viral segment (CpBV-S30) containing a viral histone H4 (CpBV-H4) also suppressed PxILP1 expression. Co-injection of CpBV-S30 and double-stranded RNA (dsCpBV-H4) specific to CpBV-H4 rescued the suppression of PxILP1 expression. Injection of CpBV-S30 significantly extended larval development. Co-injection of CpBV-S30 with dsCpBV-H4 rescued the delay of larval development. Injection of a bovine insulin to parasitized larvae prevented parasitoid development. These results indicate that parasitism of C. plutellae can down-regulate host insulin signaling with the help of parasitic factor CpBV-H4.
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Affiliation(s)
- Sunil Kumar
- Department of Bioresource Sciences, Andong National University, Andong 36729, South Korea
| | - Xiaojun Gu
- College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Yonggyun Kim
- Department of Bioresource Sciences, Andong National University, Andong 36729, South Korea.
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20
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Gülen T, Björkander J. [Insect venom allergy – the diagnosis can be difficult to make but good treatment is available]. Lakartidningen 2016; 113:D7CI. [PMID: 27505851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bee and wasp stings can cause allergic reactions. Although the local reactions are more frequent, anaphylaxis due to insect stings can be potentially fatal. Rapid recognition of anaphylaxis is therefore critical and reactions should immediately be treated with i.m. adrenaline. Patients having experienced anaphylaxis should be referred to an allergist for diagnostic evaluation and possible venom-immunotherapy (VIT). The clinical history is essential in diagnosis of venom allergy as the test results are not always reliable. Diagnostic testing with venom components might be beneficial in appropriate patients. The analysis of serum tryptase from the acute episode can be crucial. Mastocytosis is associated in about 8 percent of patients with severe anaphylaxis from insect stings and should be considered in the differential diagnosis. VIT is indicated for patients with a history of anaphylaxis and is effective in preventing future anaphylaxis from Hymenoptera stings.
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Affiliation(s)
- Theo Gülen
- Karolinska Universitetssjukhuset, Huddinge - Lung- och Allergikliniken, Stockholm, Sweden Karolinska Universitetssjukhuset, Huddinge - Lung- och Allergikliniken, Stockholm, Sweden
| | - Janne Björkander
- Futurum - Akademin för hälsa och vård - Länssjukhuset Ryhov Jönköping, Sweden Futurum - Akademin för hälsa och vård - Länssjukhuset Ryhov Jönköping, Sweden
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21
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Zhang SF, Kong XB, Wang HB, Zhou G, Yu JX, Liu F, Zhang Z. Sensory and immune genes identification and analysis in a widely used parasitoid wasp Trichogramma dendrolimi (Hymenoptera: Trichogrammatidae). Insect Sci 2016; 23:417-429. [PMID: 26940718 DOI: 10.1111/1744-7917.12330] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/21/2016] [Indexed: 06/05/2023]
Abstract
Trichogramma dendrolimi Matsumura (Hymenoptera: Trichogrammatidae) is one of the preponderant egg parasitoids of Dendrolimus spp., which are important defoliators of coniferous forests. This parasitoid wasp has been widely released to control pine caterpillar and other lepidopteran pests, but its control efficiency needs to be improved. Sensory systems are crucial for T. dendrolimi to locate hosts, and immunity is probably involved after egg deposition in the host cavity; however, few reports have focused on the molecular mechanism of olfactory detection and survival of T. dendrolimi. It is necessary to identify these genes before further functional research is conducted. In this study, we assembled and analyzed the transcriptome of T. dendrolimi using next-generation sequencing technology. The sequencing and assembly resulted in 38 565 contigs with N50 of 3422 bp. Sequence comparison indicate that T. dendrolimi sequences are very similar to those of another parasitoid Nasonia vitripennis. Then the olfactory, vision, and immune-related gene families were identified, and phylogenetic analyses were performed with these genes from T. dendrolimi and other model insect species. Furthermore, phylogenetic tree with odorant binding proteins of T. dendrolimi and their host Dendrolimus was constructed to determine whether convergent evolution exists. These genes can be valid targets for further gene function research. The present study may help us to understand host location and survival mechanisms of T. dendrolimi and to use them more efficiently for pest control in the future.
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Affiliation(s)
- Su-Fang Zhang
- Key Laboratory of Forest Protection, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
| | - Xiang-Bo Kong
- Key Laboratory of Forest Protection, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
| | - Hong-Bin Wang
- Key Laboratory of Forest Protection, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
| | - Gang Zhou
- Hunan Academy of Forestry, Changsha, China
| | - Jin-Xiu Yu
- Hunan Academy of Forestry, Changsha, China
| | - Fu Liu
- Key Laboratory of Forest Protection, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
| | - Zhen Zhang
- Key Laboratory of Forest Protection, Research Institute of Forest Ecology, Environment and Protection, Chinese Academy of Forestry, Beijing, China
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22
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Nittner-Marszalska M, Cichocka-Jarosz E, Małaczyńska T, Kraluk B, Rosiek-Biegus M, Kosinska M, Pawłowicz R, Lis G. Safety of Ultrarush Venom Immunotherapy: Comparison Between Children and Adults. J Investig Allergol Clin Immunol 2016; 26:40-47. [PMID: 27012015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
BACKGROUND The ultrarush protocol is an attractive approach in the buildup phase of venom immunotherapy (VIT-UR). However, the degree of risk of VIT-UR in children remains unknown. The objective of this study was to compare the safety of VIT-UR in children and adults. METHODS We performed a study based on prospectively gathered medical records of children and adults with hymenoptera venom allergy treated with VIT-UR in 3 allergy centers in Poland. RESULTS The study population comprised 134 children (mean [SD] age, 12.6 [3.7] years; males, 70.1%) and 207 adults (mean age, 42.4 [14.0] years; males, 47.8%). The number of children in the subgroups of bee venom (BV) allergy and wasp venom (WV) allergy were comparable, although sensitization to WV was more predominant in the adult group (70.1%). Skin reactivity to both venoms was more common in children than in adults (P < .001); however, children had higher concentrations of total IgE and specific IgE to BV (both P < .001). Systemic allergic reactions (VIT-SARs) occurred in 6.2% of the patients (3.7% in children and 7.7% in adults; nonsignificant). In adults, SARs occurred more frequently in patients treated with BV than WV extracts (21.4% vs 2.6%; P < .001). The same pattern was observed in children (7.2% vs 0%; P = .058). However, VIT-SARs to BV were less frequent in children than in adults (P = .034). Similarly, no significant relationship was noted between children and adults receiving WV VIT (2.6% vs 0%; nonsignificant). The severity of VIT-SAR did not differ between children and adults. CONCLUSIONS VIT-UR is safer in children. Age below 18 is not a risk factor for VIT-SARs.
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23
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Heneberg P, Riegerová K, Kučera P. Pimecrolimus Is a Potent Inhibitor of Allergic Reactions to Hymenopteran Venom Extracts and Birch Pollen Allergen In Vitro. PLoS One 2015; 10:e0142953. [PMID: 26562153 PMCID: PMC4643035 DOI: 10.1371/journal.pone.0142953] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2015] [Accepted: 10/28/2015] [Indexed: 01/16/2023] Open
Abstract
Pimecrolimus (Elidel, SDZ ASM 981) is an anti-inflammatory and immunomodulatory 33-epichloro-derivative of macrolactam ascomycin, with low potential for affecting systemic immune responses compared with other calcineurin inhibitors, cyclosporin A and tacrolimus. Despite numerous studies focused on the mechanism of pimecrolimus action on mast cells, only the single report has addressed pimecrolimus effects on other typical FcεRI-expressing cells, the basophils. Patients allergic to birch pollen (n = 20), hymenopteran venoms (n = 23) and 10 non-allergic volunteers were examined. Primary human basophils pre-treated or not with 0.5-50 μMol pimecrolimus were exposed to various concentrations of recombinant Bet v 1a allergen, bee or wasp venom extracts and anti-IgE for 20 min, and then examined for the expression of CD45, CD193, CD203c, CD63 and CD164 using flow cytometry. The externalization of basophil activation markers (CD63 and CD164) was equally inhibited through pimecrolimus in cells activated by recombinant pollen allergen, hymenopteran venom extracts and anti-IgE. Although the individual response rate was subject to strong variation, importantly, pre-treatment with pimecrolimus lowered the number of activated basophils in response to any of the stimuli in the basophils from all patients. The inhibition was concentration-dependent; approximately half of the basophils were inhibited in the presence of 2.5 mMol pimecrolimus. Pimecrolimus is a valuable new tool for the inhibition of hyper-reactive basophils in patients with pollen allergy and a history of anaphylactic reactions to bee or wasp venoms. Further research should address short-term use of pimecrolimus in vivo in a wide spectrum of allergic diseases.
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Affiliation(s)
- Petr Heneberg
- 2nd Department of Internal Medicine, Third Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
- * E-mail:
| | - Kamila Riegerová
- Department of Immunology, Third Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
| | - Petr Kučera
- Department of Immunology, Third Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
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24
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Verburg M, Oldhoff JM, Klemans RJB, Lahey-de Boer A, de Bruin-Weller MS, Röckmann H, Sanders C, Bruijnzeel-Koomen CAFM, Pasmans SGMA, Knulst AC. Rush immunotherapy for wasp venom allergy seems safe and effective in patients with mastocytosis. Eur Ann Allergy Clin Immunol 2015; 47:192-196. [PMID: 26549336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BACKGROUND Patients with mastocytosis and wasp venom allergy (WA) may benefit from venom immunotherapy (VIT). However, fatal insect sting reactions have been described in mastocytosis patients despite previous immunotherapy. We investigated the safety and efficacy of (rush) VIT in patients with mastocytosis and WA. OBJECTIVE To investigate the safety and efficacy of (rush) VIT in patients with mastocytosis and WA. METHODS We describe nine patients with cutaneous mastocytosis and WA who received VIT. Cutaneous mastocytosis was confirmed by histopathology and systemic mastocytosis was diagnosed according to World Health Organization criteria. VIT was given according to a rush protocol. Given the difference in safety and efficacy of VIT in patients with WA and honeybee venom allergy, we reviewed the literature for VIT with the focus on WA patients with mastocytosis and addressed the difference between patients with cutaneous versus systemic mastocytosis. RESULTS Nine patients had WA and mastocytosis, of whom six had cutaneous mastocytosis, two combined cutaneous and systemic mastocytosis and one systemic mastocytosis. All patients received rush IT with wasp venom. Most patients had only mild local side effects, with no systemic side effects during the course of VIT. One patient had a systemic reaction upon injection on one occasion, during the updosing phase, with dyspnoea and hypotension, but responded well to treatment. Immunotherapy was continued after temporary dose adjustment without problems. Two patients with a previous anaphylactic reaction were re-stung, without any systemic effects. CONCLUSIONS VIT is safe in cutaneous mastocytosis patients with WA, while caution has to be made in case of systemic mastocytosis. VIT was effective in the patients who were re-stung.
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Affiliation(s)
- M Verburg
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - J M Oldhoff
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - R J B Klemans
- Department of Dermatology/Allergology University Medical Center Utrecht, PO Box 85500, 3508 GA Utrecht, The Netherlands. Phone: +31 88 7553 235 E-mail:
| | - A Lahey-de Boer
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - M S de Bruin-Weller
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - H Röckmann
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - C Sanders
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | | | - S G M A Pasmans
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - A C Knulst
- Department of Dermatology/Allergology, University Medical Center Utrecht, Utrecht, The Netherlands
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25
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Trauer-Kizilelma U, Hilker M. Insect parents improve the anti-parasitic and anti-bacterial defence of their offspring by priming the expression of immune-relevant genes. Insect Biochem Mol Biol 2015; 64:91-99. [PMID: 26255689 DOI: 10.1016/j.ibmb.2015.08.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 07/28/2015] [Accepted: 08/03/2015] [Indexed: 06/04/2023]
Abstract
Insect parents that experienced an immune challenge are known to prepare (prime) the immune activity of their offspring for improved defence. This phenomenon has intensively been studied by analysing especially immunity-related proteins. However, it is unknown how transgenerational immune priming affects transcript levels of immune-relevant genes of the offspring upon an actual threat. Here, we investigated how an immune challenge of Manduca sexta parents affects the expression of immune-related genes in their eggs that are attacked by parasitoids. Furthermore, we addressed the question whether the transgenerational immune priming of expression of genes in the eggs is still traceable in adult offspring. Our study revealed that a parental immune challenge did not affect the expression of immune-related genes in unparasitised eggs. However, immune-related genes in parasitised eggs of immune-challenged parents were upregulated to a higher level than those in parasitised eggs of unchallenged parents. Hence, this transgenerational immune priming of the eggs was detected only "on demand", i.e. upon parasitoid attack. The priming effects were also traceable in adult female progeny of immune-challenged parents which showed higher transcript levels of several immune-related genes in their ovaries than non-primed progeny. Some of the primed genes showed enhanced expression even when the progeny was left unchallenged, whereas other genes were upregulated to a greater extent in primed female progeny than non-primed ones only when the progeny itself was immune-challenged. Thus, the detection of transgenerational immune priming strongly depends on the analysed genes and the presence or absence of an actual threat for the offspring. We suggest that M. sexta eggs laid by immune-challenged parents "afford" to upregulate the transcription of immunity-related genes only upon attack, because they have the chance to be endowed by parentally directly transferred protective proteins.
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Affiliation(s)
- Ute Trauer-Kizilelma
- Institute of Biology, Dahlem Centre of Plant Sciences, Freie Universität Berlin, Haderslebener Str. 9, 12163 Berlin, Germany
| | - Monika Hilker
- Institute of Biology, Dahlem Centre of Plant Sciences, Freie Universität Berlin, Haderslebener Str. 9, 12163 Berlin, Germany.
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26
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Vanha-aho LM, Anderl I, Vesala L, Hultmark D, Valanne S, Rämet M. Edin Expression in the Fat Body Is Required in the Defense Against Parasitic Wasps in Drosophila melanogaster. PLoS Pathog 2015; 11:e1004895. [PMID: 25965263 PMCID: PMC4429011 DOI: 10.1371/journal.ppat.1004895] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 04/19/2015] [Indexed: 12/17/2022] Open
Abstract
The cellular immune response against parasitoid wasps in Drosophila involves the activation, mobilization, proliferation and differentiation of different blood cell types. Here, we have assessed the role of Edin (elevated during infection) in the immune response against the parasitoid wasp Leptopilina boulardi in Drosophila melanogaster larvae. The expression of edin was induced within hours after a wasp infection in larval fat bodies. Using tissue-specific RNAi, we show that Edin is an important determinant of the encapsulation response. Although edin expression in the fat body was required for the larvae to mount a normal encapsulation response, it was dispensable in hemocytes. Edin expression in the fat body was not required for lamellocyte differentiation, but it was needed for the increase in plasmatocyte numbers and for the release of sessile hemocytes into the hemolymph. We conclude that edin expression in the fat body affects the outcome of a wasp infection by regulating the increase of plasmatocyte numbers and the mobilization of sessile hemocytes in Drosophila larvae. The events leading to a successful encapsulation of parasitoid wasp eggs in the larvae of the fruit fly Drosophila melanogaster are insufficiently understood. The formation of a capsule seals off the wasp egg, and this process is often functionally compared to the formation of granulomas in vertebrates. Like granuloma formation in humans, the encapsulation process in fruit flies requires the activation, mobilization, proliferation and differentiation of different blood cell types. Here, we have studied the role of Edin (elevated during infection) in the immune defense against the parasitoid wasp Leptopilina boulardi in Drosophila larvae. We demonstrate that edin expression in the fat body (an immune-responsive organ in Drosophila functionally resembling the mammalian liver) is required for a normal defense against wasp eggs. Edin is required for the release of blood cells from larval tissues and for the subsequent increase in circulating blood cell numbers. Our results provide new knowledge of how the encapsulation process is regulated in Drosophila, and how blood cells are activated upon wasp parasitism. Understanding of the encapsulation process in invertebrates may eventually lead to a better knowledge of the pathophysiology of granuloma formation in human diseases, such as tuberculosis.
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Affiliation(s)
- Leena-Maija Vanha-aho
- Laboratory of Experimental Immunology, BioMediTech, University of Tampere, Tampere, Finland
| | - Ines Anderl
- Laboratory of Genetic Immunology, BioMediTech, University of Tampere, Tampere, Finland
- Department of Molecular Biology, Umeå University, Umeå, Sweden
| | - Laura Vesala
- Laboratory of Genetic Immunology, BioMediTech, University of Tampere, Tampere, Finland
| | - Dan Hultmark
- Laboratory of Genetic Immunology, BioMediTech, University of Tampere, Tampere, Finland
- Department of Molecular Biology, Umeå University, Umeå, Sweden
| | - Susanna Valanne
- Laboratory of Experimental Immunology, BioMediTech, University of Tampere, Tampere, Finland
| | - Mika Rämet
- Laboratory of Experimental Immunology, BioMediTech, University of Tampere, Tampere, Finland
- Department of Pediatrics, Tampere University Hospital, Tampere, Finland
- PEDEGO Research Center, and Medical Research Center Oulu, University of Oulu and Department of Children and Adolescents, Oulu University Hospital, Oulu, Finland
- * E-mail:
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27
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Mark CK, Grøfte T, Shim J. [Fatal reaction to wasp sting in a patient allergic to wasp venom]. Ugeskr Laeger 2015; 177:V12140662. [PMID: 25922165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A 68-year-old man suffered from anaphylaxis and cardiac arrest following wasp sting. He was resuscitated and taken to hospital where he later died from anoxic brain injury. Previously he had had an anaphylactic reaction to wasp venom but did not carry his auto-adrenaline-injector. Patients with anaphylaxis due to insect venom must be referred to allergological investigations. Furthermore, they should be educated in recognition and handling of anaphylaxis and they should be provided with a management plan and an auto-adrenaline-injector along with a thorough instruction on the appropriate use.
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Pastorello EA, Schroeder JW, Veronese SM, Pravettoni V, De Gasperi A, Cantoni S, Losappio L, Farioli L, Qualizza R, Scarpati B, Mascheri A, Scibilia J. Two cases of elevated tryptase in abdominal aortic aneurysm. Eur Ann Allergy Clin Immunol 2015; 47:58-61. [PMID: 25781196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
INTRODUCTION From the literature, patients with a history of anaphylaxis to hymenoptera venom and positive specific IgE have shown a correlation between elevated tryptase levels and two clinical situations: systemic mastocytosis and an increased risk of reactions to venom immunotherapy or hymenoptera sting. Other clinical scenarios could explain elevated tryptase levels. MATERIAL AND METHODS A 67 year old male (P1) and a 77 year old male (P2) were evaluated for previous severe anaphylaxis to hymenoptera sting. They underwent standard diagnostic work-up for hymenoptera venom allergy. Having found elevated tryptase levels, these were followed by a bone marrow biopsy to rule out systemic mastocytosis. RESULTS P1: specific IgE and skin tests were positive for Vespula species; tryptase 52.8 ng/ml; P2: specific IgE and skin tests were positive for Vespa cabro and tryptase 153 ng/ml. Bone marrow biopsy results were negative for mastocytosis. We carried out magnetic resonance imaging, in P1 to better characterize the severe osteoporosis and in P2 because during physical examination a pulsating mass had been identified in the mesogastrium, and an aneurysm of the abdominal aorta which required surgical intervention in both patients was detected. Eight months after surgery, tryptase levels had diminished significantly (P1: 11.6 ng/ml and P2: 14.5 ng/ml). DISCUSSION The elevated tryptase levels were correlated to abdominal aneurysm in both patients. In fact, post-surgery tryptase levels dramatically decreased. These two cases demonstrate that high tryptase levels in subjects with a history of hymenoptera venom anaphylaxis can be associated to undiagnosed aneurysmatic disease.
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Affiliation(s)
- E A Pastorello
- Department of Allergology and Immunology, Niguarda Ca' Granda Hospital, Piazza Ospedale Maggiore 3, Milan 20162, Italy. Phone: +39 02 6444 27 51 Fax: +39 02 6444 20 82 E-mail:
| | - J W Schroeder
- Department of Allergology and Immunology, Niguarda Ca' Granda Hospital, Milan, Italy
| | - S M Veronese
- Department of Anatomy Histology and Cytogenetics, Niguarda Ca' Granda Hospital, Milan, Italy
| | - V Pravettoni
- Clinical Allergy and Immunology Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - A De Gasperi
- Department of Anaesthesia and Intensive Care, Niguarda Ca' Granda Hospital, Milan, Italy
| | - S Cantoni
- Department of Hematology, Niguarda Ca' Granda Hospital, Milan, Italy
| | - L Losappio
- Department of Allergology and Immunology, Niguarda Ca' Granda Hospital, Milan, Italy
| | - L Farioli
- Department of Laboratory Medicine, Niguarda Ca' Granda Hospital, Milan, Italy
| | - R Qualizza
- Department of Allergology and Immunology, Niguarda Ca' Granda Hospital, Milan, Italy
| | - B Scarpati
- Department of Immunohematology and Transfusion Medicine, Niguarda Ca' Granda Hospital, Milan, Italy
| | - A Mascheri
- Department of Allergology and Immunology, Niguarda Ca' Granda Hospital, Milan, Italy
| | - J Scibilia
- Department of Allergology and Immunology, Niguarda Ca' Granda Hospital, Milan, Italy
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Chugo S, Lizaso MT, Alvarez MJ, Lizarza S, Tabar AI. Vespa velutina nigritorax: A New Causative Agent in Anaphylaxis. J Investig Allergol Clin Immunol 2015; 25:231-232. [PMID: 26182696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
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30
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dos Santos-Pinto JRA, dos Santos LD, Arcuri HA, da Silva Menegasso AR, Pêgo PN, Santos KS, Castro FM, Kalil JE, De-Simone SG, Palma MS. B-cell linear epitopes mapping of antigen-5 allergen from Polybia paulista wasp venom. J Allergy Clin Immunol 2014; 135:264-7. [PMID: 25129676 DOI: 10.1016/j.jaci.2014.07.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 05/27/2014] [Accepted: 07/02/2014] [Indexed: 11/17/2022]
Affiliation(s)
| | | | - Helen Andrade Arcuri
- INCT, São Paulo, Brazil; Discipline of Allergy and Immunology (HC/Incor/FMUSP) São Paulo, Brazil
| | | | | | - Keity Souza Santos
- INCT, São Paulo, Brazil; Discipline of Allergy and Immunology (HC/Incor/FMUSP) São Paulo, Brazil
| | - Fábio Morato Castro
- INCT, São Paulo, Brazil; Discipline of Allergy and Immunology (HC/Incor/FMUSP) São Paulo, Brazil
| | - Jorge Elias Kalil
- INCT, São Paulo, Brazil; Discipline of Allergy and Immunology (HC/Incor/FMUSP) São Paulo, Brazil
| | | | - Mario Sergio Palma
- Institute of Biosciences of Rio Claro, University of São Paulo State (UNESP), Rio Claro, Brazil; INCT, São Paulo, Brazil.
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Lu A, Peng Q, Ling E. Formation of disulfide bonds in insect prophenoloxidase enhances immunity through improving enzyme activity and stability. Dev Comp Immunol 2014; 44:351-358. [PMID: 24480295 DOI: 10.1016/j.dci.2014.01.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 01/13/2014] [Accepted: 01/14/2014] [Indexed: 06/03/2023]
Abstract
Type 3 copper proteins, including insect prophenoloxidase (PPO), contain two copper atoms in the active site pocket and can oxidize phenols. Insect PPO plays an important role in immunity. Insects and other invertebrates show limited recovery from pathogen invasion and wounds if phenoloxidase (PO) activity is low. In most insect PPOs, two disulfide bonds are present near the C-terminus. However, in Pimpla hypochondriaca (a parasitoid wasp), each PPO contains one disulfide bond. We thus questioned whether the formation of two sulfide bonds in insect PPOs improved protein stability and/or increased insect innate immunity over time. Using Drosophila melanogaster PPO1 as a model, one or two disulfide bonds were deleted to evaluate the importance of disulfide bonds in insect immunity. rPPO1 and mutants lacking disulfide bonds could be expressed and showed PO activity. However, the PO activities of mutants lacking one or two disulfide bonds significantly decreased. Deletion of disulfide bonds also reduced PPO thermostability. Furthermore, antibacterial activities against Escherichia coli and Bacillus subtilis significantly decreased when disulfide bonds were deleted. Therefore, the formation of two disulfide bond(s) in insect PPO enhances antibacterial activity by increasing PO activity and stability.
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Affiliation(s)
- Anrui Lu
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Qin Peng
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
| | - Erjun Ling
- Key Laboratory of Insect Developmental and Evolutionary Biology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China.
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Prasad SV, Hepat R, Kim Y. Selectivity of a translation-inhibitory factor, CpBV15β, in host mRNAs and subsequent alterations in host development and immunity. Dev Comp Immunol 2014; 44:152-162. [PMID: 24361921 DOI: 10.1016/j.dci.2013.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Revised: 12/03/2013] [Accepted: 12/03/2013] [Indexed: 06/03/2023]
Abstract
An endoparasitoid wasp, Cotesia plutellae, parasitizes young larvae of the diamondback moth, Plutella xylostella. Its symbiotic virus, C. plutellae bracovirus (CpBV), has been shown to play a crucial role in inducing physiological changes in the parasitized host. A viral gene, CpBV15β, exhibits a specific translational control against host mRNAs by sequestering a eukaryotic translation initiation factor, eIF4A. Inhibitory target mRNAs have high thermal stability (>≈9 kcal/mol) of their secondary structures in 5'UTR. To determine the specificity of translational control in terms of 5'UTR complexity, this study screened target/nontarget mRNAs of CpBV15β using a proteomics approach through an in vivo transient expression technique. A proteomics analysis of host plasma proteins showed that 12.9% (23/178) spots disappeared along with the expression of CpBV15β. A total of ten spots were chosen, in which five spots ('target') were disappeared by expression of CpBV15β and the other five ('nontarget') were insensitive to expression of CpBV15β, and further analyzed by a tandem mass spectroscopy. The predicted genes of target spots had much greater complexity (-12.3 to -25.2 kcal/mol) of their 5'UTR in terms of thermal stability compared to those (-3.70 to -9.00 kcal/mol) of nontarget spots. 5'UTRs of one target gene (arginine kinase:Px-AK) and one nontarget gene (imaginal disc growth factor:Px-IDGF) were cloned and used for in vitro translation (IVT) assay using rabbit reticulocyte lysate. IVT assay clearly showed that mRNA of Px-IDGF was translated in the presence of CpBV15β, but mRNA of Px-AK was not. Physiological significance of these two genes was compared in immune and development processes of P. xylostella by specific RNA interference (RNAi). Under these RNAi conditions, suppression of Px-AK exhibited much more significant adverse effects on larval immunity and larva-to-pupa metamorphosis compared to the effect of suppression of Px-IDGF. These results support the hypothesis that 5'UTR complexity is a molecular motif to discriminate host mRNAs by CpBV15β for its host translational control and suggest that this discrimination would be required for altering host physiology to accomplish a successful parasitism of the wasp host, C. plutellae.
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Affiliation(s)
- Surakasi Venkata Prasad
- Department of Bioresource Sciences, Andong National University, Andong 760-749, Republic of Korea; Sanzyme Ltd., PO Bag No: 1014, Banjara Hills, Hyderabad 500034, Andhra Pradesh, India
| | - Rahul Hepat
- Department of Bioresource Sciences, Andong National University, Andong 760-749, Republic of Korea
| | - Yonggyun Kim
- Department of Bioresource Sciences, Andong National University, Andong 760-749, Republic of Korea.
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Sackton TB, Werren JH, Clark AG. Characterizing the infection-induced transcriptome of Nasonia vitripennis reveals a preponderance of taxonomically-restricted immune genes. PLoS One 2013; 8:e83984. [PMID: 24386321 PMCID: PMC3873987 DOI: 10.1371/journal.pone.0083984] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 11/10/2013] [Indexed: 12/19/2022] Open
Abstract
The innate immune system in insects consists of a conserved core signaling network and rapidly diversifying effector and recognition components, often containing a high proportion of taxonomically-restricted genes. In the absence of functional annotation, genes encoding immune system proteins can thus be difficult to identify, as homology-based approaches generally cannot detect lineage-specific genes. Here, we use RNA-seq to compare the uninfected and infection-induced transcriptome in the parasitoid wasp Nasonia vitripennis to identify genes regulated by infection. We identify 183 genes significantly up-regulated by infection and 61 genes significantly down-regulated by infection. We also produce a new homology-based immune catalog in N. vitripennis, and show that most infection-induced genes cannot be assigned an immune function from homology alone, suggesting the potential for substantial novel immune components in less well-studied systems. Finally, we show that a high proportion of these novel induced genes are taxonomically restricted, highlighting the rapid evolution of immune gene content. The combination of functional annotation using RNA-seq and homology-based annotation provides a robust method to characterize the innate immune response across a wide variety of insects, and reveals significant novel features of the Nasonia immune response.
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Affiliation(s)
- Timothy B. Sackton
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, United States of America
- * E-mail:
| | - John H. Werren
- Department of Biology, University of Rochester, Rochester, New York, United States of America
| | - Andrew G. Clark
- Department of Molecular Biology and Genetics, Cornell University, Ithaca, New York, United States of America
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Wang ZZ, Shi M, Zhao W, Bian QL, Ye GY, Chen XX. Identification and characterization of defensin genes from the endoparasitoid wasp Cotesia vestalis (Hymenoptera: Braconidae). J Insect Physiol 2013; 59:1095-1103. [PMID: 24013003 DOI: 10.1016/j.jinsphys.2013.08.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 08/24/2013] [Accepted: 08/26/2013] [Indexed: 06/02/2023]
Abstract
Defensins are members of a large and diverse family of antimicrobial peptides (AMPs) containing three or four intramolecular disulfide bonds. They are widely distributed from vertebrates to invertebrates, and serve as critical defense molecules protecting the host from the invasion of pathogens or protozoan parasites. Cotesia vestalis is a small endoparasitoid wasp that lays eggs in larvae of Plutella xylostella, a cosmopolitan pest of cruciferous crops. We identified and characterized three full-length cDNAs encoding putative defensin-like peptides from C. vestalis, named CvDef1, CvDef2 and CvDef3. Phylogenetic analyses of these sequences showed that they are present in two clades, CITDs and PITDs, indicating a diversity of defensins in C. vestalis. We analyzed their expression patterns in larvae, pupae and adults by semi-quantitative RT-PCR. The results showed that CvDef1 mRNA was expressed from the end stage of the second instar larva, CvDef3 mRNA from the early stage of the second instar larva, and CvDef2 mRNA was expressed in all developmental stages of C. vestalis. Furthermore, CvDef1 showed antimicrobial activity against gram-positive and gram-negative bacteria. Growth kinetics of Staphylococcus aureus indicated that CvDef1 had much better antimicrobial ability than ampicillin, making it a potential candidate for practical use. Transmission electron microscopic (TEM) examination of CvDef1-treated S. aureus cells showed extensive damage to the cell membranes. Our results revealed the basic properties of three defensins in C. vestalis for the first time, which may pave the way for further study of the functions of defensins in parasitism and innate immunity of C. vestalis.
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Affiliation(s)
- Zhi-Zhi Wang
- Ministry of Agriculture Key Lab of Agricultural Entomology, Institute of Insect Sciences, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
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Furihata S, Tanaka K, Ryuda M, Ochiai M, Matsumoto H, Csikos G, Hayakawa Y. Immunoevasive protein (IEP)-containing surface layer covering polydnavirus particles is essential for viral infection. J Invertebr Pathol 2013; 115:26-32. [PMID: 24184953 DOI: 10.1016/j.jip.2013.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 10/18/2013] [Accepted: 10/23/2013] [Indexed: 11/18/2022]
Abstract
Polydnaviruses (PDVs) are unique symbiotic viruses associated with parasitoid wasps: PDV particles are injected into lepidopteran hosts along with the wasp eggs and express genes that interfere with aspects of host physiology such as immune defenses and development. Recent comparative genomic studies of PDVs have significantly improved our understanding of their origin as well as the genome organization. However, the structural features of functional PDV particles remain ambiguous. To clear up the structure of Cotesia kariyai PDV (CkPDV) particles, we focused on immunoevasive protein (IEP), which is a mediator of immunoevasion by the wasp from the encapsulation reaction of the host insect's hemocytes, because it has been demonstrated to be present on the surface of the virus particle. We discovered that IEP tends to polymerize and constitutes a previously unidentified thin surface layer covering CkPDV particles. This outermost surface layer looked fragile and was easily removed from CkPVD particles by mechanical stressors such as shaking, which prevented CkPDV from expressing the encoded genes in the host target tissues such as fat body or hemocytes. Furthermore, we detected IEP homologue gene expression in the wasp's venom reservoirs, implying IEP has another unknown biological function in the wasp or parasitized hosts. Taken together, the present results demonstrated that female C. kariyai wasps produce the fragile thin layer partly composed of IEP to cover the outer surfaces of CkPDV particles; otherwise, they cannot function as infectious agents in the wasp's host. The fact that IEP family proteins are expressed in both venom reservoirs and oviducts suggests an intimate relationship between both tissues in the development of the parasitism strategy of the wasp.
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Affiliation(s)
- Shunsuke Furihata
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan
| | - Kohjiro Tanaka
- Institute of Low Temeperature Science, Hokkaido University, Sapporo 060-0819, Japan
| | - Masasuke Ryuda
- Department of Applied Biological Sciences, Saga University, Saga 840-8502, Japan
| | - Masanori Ochiai
- Institute of Low Temeperature Science, Hokkaido University, Sapporo 060-0819, Japan
| | - Hitoshi Matsumoto
- Department of Applied Biological Sciences, Saga University, Saga 840-8502, Japan
| | - Gyorge Csikos
- Department of Anatomy, Cell and Molecular Biology, Eotvos Lorand University, Budapest H-1117, Hungary
| | - Yoichi Hayakawa
- The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima 890-0065, Japan; Department of Applied Biological Sciences, Saga University, Saga 840-8502, Japan.
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Schubert J, Hallberg P. [Close monitoring is required when adrenaline is administered in combination with tricyclic antidepressive agents]. Lakartidningen 2013; 110:1872. [PMID: 24294659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Abstract
Nancy E. Beckage is widely recognized for her pioneering work in the field of insect host-parasitoid interactions beginning with endocrine influences of the tobacco hornworm, Manduca sexta, host and its parasitoid wasp Apanteles congregatus (now Cotesia congregata) on each other's development. Moreover, her studies show that the polydnavirus carried by the parasitoid wasp not only protects the parasitoid from the host's immune defenses, but also is responsible for some of the developmental effects of parasitism. Nancy was a highly regarded mentor of both undergraduate and graduate students and more widely of women students and colleagues in entomology. Her service both to her particular area and to entomology in general through participation on federal grant review panels and in the governance of the Entomological Society of America, organization of symposia at both national and international meetings, and editorship of several different journal issues and of several books is legendary. She has left behind a lasting legacy of increased understanding of multilevel endocrine and physiological interactions among insects and other organisms and a strong network of interacting scientists and colleagues in her area of entomology.
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Affiliation(s)
- Lynn M Riddiford
- Janelia Farm Research Campus, Howard Hughes Medical Institute, Ashburn, Virginia 20147;
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Alvarez-Twose I, Zanotti R, González-de-Olano D, Bonadonna P, Vega A, Matito A, Sánchez-Muñoz L, Morgado JM, Perbellini O, García-Montero A, De Matteis G, Teodósio C, Rossini M, Jara-Acevedo M, Schena D, Mayado A, Zamò A, Mollejo M, Sánchez-López P, Cabañes N, Orfao A, Escribano L. Nonaggressive systemic mastocytosis (SM) without skin lesions associated with insect-induced anaphylaxis shows unique features versus other indolent SM. J Allergy Clin Immunol 2013; 133:520-8. [PMID: 23921094 DOI: 10.1016/j.jaci.2013.06.020] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 06/06/2013] [Accepted: 06/17/2013] [Indexed: 11/18/2022]
Abstract
BACKGROUND Indolent systemic mastocytosis (ISM) without skin lesions (ISMs(-)) shows a higher prevalence in males, lower serum baseline tryptase levels, and KIT mutation more frequently restricted to bone marrow (BM) mast cells (MCs) than ISM with skin lesions (ISMs(+)). Interestingly, in almost one-half of ISMs(-) patients, MC-mediator release episodes are triggered exclusively by insects. OBJECTIVE We aimed to determine the clinical and laboratory features of ISMs(-) associated with insect-induced anaphylaxis (insectISMs(-)) versus other patients with ISM. METHODS A total of 335 patients presenting with MC activation syndrome, including 143 insectISMs(-), 72 ISMs(-) triggered by other factors (otherISMs(-)), 56 ISMs(+), and 64 nonclonal MC activation syndrome, were studied. RESULTS Compared with otherISMs(-) and ISMs(+) patients, insectISMs(-) cases showed marked male predominance (78% vs 53% and 46%; P < .001), a distinct pattern of MC-related symptoms, and significantly lower median serum baseline tryptase levels (22.4 vs 28.7 and 45.8 μg/L; P ≤ .009). Moreover, insectISMs(-) less frequently presented BM MC aggregates (46% vs 70% and 81%; P ≤ .001), and they systematically showed MC-restricted KIT mutation. CONCLUSIONS ISMs(-) patients with anaphylaxis triggered exclusively by insects display clinical and laboratory features that are significantly different from other ISM cases, including other ISMs(-) and ISMs(+) patients, suggesting that they represent a unique subgroup of ISM with a particularly low BM MC burden in the absence of adverse prognostic factors.
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Affiliation(s)
- Iván Alvarez-Twose
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain.
| | - Roberta Zanotti
- Section of Haematology, Department of Medicine, University of Verona, Verona, Italy; Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy
| | - David González-de-Olano
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Allergy Unit, Hospital de Fuenlabrada, Madrid, Spain
| | - Patrizia Bonadonna
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Allergy Unit, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Arantza Vega
- Allergy Department, Hospital de Guadalajara, Guadalajara, Spain
| | - Almudena Matito
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain
| | - Laura Sánchez-Muñoz
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain
| | - José Mário Morgado
- Instituto de Estudios de Mastocitosis de Castilla La Mancha (CLMast), Hospital Virgen del Valle, Toledo, Spain; Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain
| | - Omar Perbellini
- Section of Haematology, Department of Medicine, University of Verona, Verona, Italy; Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy
| | - Andrés García-Montero
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Giovanna De Matteis
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Clinical Chemistry and Haematology, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Cristina Teodósio
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Maurizio Rossini
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Section of Rheumatology, Department of Medicine, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - María Jara-Acevedo
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Donatella Schena
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Section of Dermatology, Department of Medicine, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Andrea Mayado
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Alberto Zamò
- Multidisciplinary Outpatients Clinics for Mastocytosis, Verona, Italy; Department of Pathology, Azienda Ospedaliera Universitaria Integrata, Verona, Italy
| | - Manuela Mollejo
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Pathology Department, Hospital Virgen de la Salud, Toledo, Spain
| | | | | | - Alberto Orfao
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain; Centro de Investigación del Cáncer/IBMCC (USAL/CSIC) and IBSAL, Departamento de Medicina and Servicio General de Citometría, University of Salamanca, Salamanca, Spain
| | - Luis Escribano
- Spanish Network on Mastocytosis (REMA), Toledo and Salamanca, Spain
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Fischer J, Teufel M, Feidt A, Giel KE, Zipfel S, Biedermann T. Tolerated wasp sting challenge improves health-related quality of life in patients allergic to wasp venom. J Allergy Clin Immunol 2013; 132:489-90. [PMID: 23639308 DOI: 10.1016/j.jaci.2013.03.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2012] [Revised: 02/22/2013] [Accepted: 03/14/2013] [Indexed: 11/29/2022]
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Van Vaerenbergh M, Cardoen D, Formesyn EM, Brunain M, Van Driessche G, Blank S, Spillner E, Verleyen P, Wenseleers T, Schoofs L, Devreese B, de Graaf DC. Extending the honey bee venome with the antimicrobial peptide apidaecin and a protein resembling wasp antigen 5. Insect Mol Biol 2013; 22:199-210. [PMID: 23350689 DOI: 10.1111/imb.12013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Honey bee venom is a complex mixture of toxic proteins and peptides. In the present study we tried to extend our knowledge of the venom composition using two different approaches. First, worker venom was analysed by liquid chromatography-mass spectrometry and this revealed the antimicrobial peptide apidaecin for the first time in such samples. Its expression in the venom gland was confirmed by reverse transcription PCR and by a peptidomic analysis of the venom apparatus tissue. Second, genome mining revealed a list of proteins with resemblance to known insect allergens or venom toxins, one of which showed homology to proteins of the antigen 5 (Ag5)/Sol i 3 cluster. It was demonstrated that the honey bee Ag5-like gene is expressed by venom gland tissue of winter bees but not of summer bees. Besides this seasonal variation, it shows an interesting spatial expression pattern with additional production in the hypopharyngeal glands, the brains and the midgut. Finally, our immunoblot study revealed that both synthetic apidaecin and the Ag5-like recombinant from bacteria evoke no humoral activity in beekeepers. Also, no IgG4-based cross-reactivity was detected between the honey bee Ag5-like protein and its yellow jacket paralogue Ves v 5.
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Zhu JY, Yang P, Zhang Z, Wu GX, Yang B. Transcriptomic immune response of Tenebrio molitor pupae to parasitization by Scleroderma guani. PLoS One 2013; 8:e54411. [PMID: 23342153 PMCID: PMC3544796 DOI: 10.1371/journal.pone.0054411] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2012] [Accepted: 12/13/2012] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Host and parasitoid interaction is one of the most fascinating relationships of insects, which is currently receiving an increasing interest. Understanding the mechanisms evolved by the parasitoids to evade or suppress the host immune system is important for dissecting this interaction, while it was still poorly known. In order to gain insight into the immune response of Tenebrio molitor to parasitization by Scleroderma guani, the transcriptome of T. molitor pupae was sequenced with focus on immune-related gene, and the non-parasitized and parasitized T. molitor pupae were analyzed by digital gene expression (DGE) analysis with special emphasis on parasitoid-induced immune-related genes using Illumina sequencing. METHODOLOGY/PRINCIPAL FINDINGS In a single run, 264,698 raw reads were obtained. De novo assembly generated 71,514 unigenes with mean length of 424 bp. Of those unigenes, 37,373 (52.26%) showed similarity to the known proteins in the NCBI nr database. Via analysis of the transcriptome data in depth, 430 unigenes related to immunity were identified. DGE analysis revealed that parasitization by S. guani had considerable impacts on the transcriptome profile of T. molitor pupae, as indicated by the significant up- or down-regulation of 3,431 parasitism-responsive transcripts. The expression of a total of 74 unigenes involved in immune response of T. molitor was significantly altered after parasitization. CONCLUSIONS/SIGNIFICANCE obtained T. molitor transcriptome, in addition to establishing a fundamental resource for further research on functional genomics, has allowed the discovery of a large group of immune genes that might provide a meaningful framework to better understand the immune response in this species and other beetles. The DGE profiling data provides comprehensive T. molitor immune gene expression information at the transcriptional level following parasitization, and sheds valuable light on the molecular understanding of the host-parasitoid interaction.
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Affiliation(s)
- Jia-Ying Zhu
- Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, Southwest Forestry University, Kunming, China.
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Büyükgüzel E. Eicosanoids mediate cellular immune response and phenoloxidase reaction to viral infection in adult Pimpla turionellae. Arch Insect Biochem Physiol 2012; 81:20-33. [PMID: 22622947 DOI: 10.1002/arch.21031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Nodulation is the predominant insect cellular immune response to microbial infections. We posed the hypothesis that parasitoid insects in their adulthood express melanotic nodulation reactions to viral challenge and that eicosanoids mediate nodulation reactions and phenoloxidase (PO) activation in response to viral challenge. To test this idea, we injected Pimpla turionellae adults with indomethacin, a nonsteroidal anti-inflammatory drug, immediately prior to intrahemocoelic injection of Bovine herpes simplex virus-1 (BHSV-1). Treating newly emerged adults of P. turionellae with BHSV-1 induced nodulation reactions, and decreased PO activity at high viral doses. Relative to vehicle-treated controls, indomethacin-treated adults produced significantly reduced numbers of nodules following viral infection (down from approximately 21 nodules per adult to less than six nodules per adult). In addition to injection treatments, increasing dietary indomethacin dosages (from 0.01% to 0.1%) were associated with decreasing nodulation (by six-fold) and PO (by about three-fold) reactions to BHSV-1 injection. Wasp adults orally fed with the lowest dietary indomethacin concentration (0.001%) expressed significantly increased PO activity (1.45 unit/min/mg protein) while nodulation reaction was not affected in response to viral challenge compared to control adults. We infer from these findings that cyclooxygenase (COX) products, at least prostaglandins, mediate nodulation response and PO action to viral infection in adults of these highly specialized insects.
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Affiliation(s)
- Ender Büyükgüzel
- Department of Biology, Faculty of Arts and Science, Zonguldak Karaelmas University, İncivez, Zonguldak, Turkey.
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Vinzón SE, Marino-Buslje C, Rivera E, Biscoglio de Jiménez Bonino M. A naturally occurring hypoallergenic variant of vespid Antigen 5 from Polybia scutellaris venom as a candidate for allergen-specific immunotherapy. PLoS One 2012; 7:e41351. [PMID: 22844463 PMCID: PMC3402526 DOI: 10.1371/journal.pone.0041351] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2012] [Accepted: 06/20/2012] [Indexed: 12/02/2022] Open
Abstract
Stings by insects from the Hymenoptera order are known to cause life-threatening allergic reactions and impair life quality. Despite the effectiveness of conventional vespid venom immunotherapy, more standardized and safer allergy vaccines are required and recombinant hypoallergenic variants are important clinical tools. Antigen 5 is a major allergen of vespid venoms and it was previously reported that Antigen 5 from Polybia scutellaris (Poly s 5) could be a hypoallergenic variant. In this work we assess the immunological behavior and allergenic activity of Poly s 5 in order to explore its suitability for specific immunotherapy. With this aim, recombinant Poly s 5 was expressed in Pichia pastoris and the presence of cross-reactive epitopes with Pol a 5, a known allergenic Antigen 5, was investigated both at the IgG and IgE levels, by ELISA assays and a basophil-mediator release assay respectively. A molecular model was also built to better understand the relationship between immunological and structural aspects. In mice, Poly s 5 induced IgG antibodies which cross-reacted with Pol a 5. However, Poly s 5 induced only minimal amounts of IgE and was a poor inducer of basophil-mediator release, even when the cells were sensitized with Pol a 5-specific IgE. Moreover, Poly s 5-specific serum showed a specific protective activity and was able to inhibit the Pol a 5-induced basophil degranulation. Structural analysis from the molecular model revealed that a few amino acid substitutions in the N-terminal region of Poly s 5 should lead to an alteration of the surface topography and electrostatic potential of the epitopes which could be responsible for its hypoallergenic behavior. These findings, taken as a whole, show that Poly s 5 is likely a naturally occurring hypoallergenic Antigen 5 variant.
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Affiliation(s)
- Sabrina E Vinzón
- Departamento de Química Biológica e Instituto de Química y Fisicoquímica Biológicas (IQUIFIB), Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina.
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Mortimer NT, Kacsoh BZ, Keebaugh ES, Schlenke TA. Mgat1-dependent N-glycosylation of membrane components primes Drosophila melanogaster blood cells for the cellular encapsulation response. PLoS Pathog 2012; 8:e1002819. [PMID: 22829770 PMCID: PMC3400557 DOI: 10.1371/journal.ppat.1002819] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 06/10/2012] [Indexed: 12/23/2022] Open
Abstract
In nature, larvae of the fruitfly Drosophila melanogaster are commonly infected by parasitoid wasps, and so have evolved a robust immune response to counter wasp infection. In this response, fly immune cells form a multilayered capsule surrounding the wasp egg, leading to death of the parasite. Many of the molecular mechanisms underlying this encapsulation response are conserved with human immune responses. Our findings suggest that protein N-glycosylation, a common protein post-translational modification of human immune proteins, may be one such conserved mechanism. We found that membrane proteins on Drosophila immune cells are N-glycosylated in a temporally specific manner following wasp infection. Furthermore we have identified mutations in eight genes encoding enzymes of the N-glycosylation pathway that decrease fly resistance to wasp infection. More specifically, loss of protein N-glycosylation in immune cells following wasp infection led to the formation of defective capsules, which disintegrated over time and were thereby unsuccessful at preventing wasp development. Interestingly, we also found that one species of Drosophila parasitoid wasp, Leptopilina victoriae, targets protein N-glycosylation as part of its virulence mechanism, and that overexpression of an N-glycosylation enzyme could confer resistance against this wasp species to otherwise susceptible flies. Taken together, these findings demonstrate that protein N-glycosylation is a key player in Drosophila cellular encapsulation and suggest that this response may provide a novel model to study conserved roles of protein glycosylation in immunity. Organisms such as the fruitfly Drosophila melanogaster have long been used as model systems to understand complex aspects of human biology. Work on Drosophila antimicrobial immunity has led to identification of mechanisms underlying human innate immunity, such as the use of Toll-like receptors for recognizing antigen and initiating humoral immune responses. Flies and humans are also infected by larger parasites against which they mount immune blood-cell based responses, but the genetic basis for cellular immunity is poorly characterized. In nature, flies are often infected by parasitoid wasps that lay their eggs in fly larvae, inducing a cellular immune response in the flies. Fly blood cells surround the wasp egg and form a tightly connected capsule leading to death of the egg in a process called encapsulation, which is similar to human granuloma formation. In this study we identified eight new genes that are important for encapsulation. These genes are part of the N-glycosylation pathway, and we found that without N-glycosylation of proteins on blood cell surfaces, capsules surrounding wasp eggs cannot consolidate into a tight capsule, allowing the wasps to escape. Interestingly, we also found a wasp that disrupts N-glycosylation so that it can evade the encapsulation response. Our work may provide a model to better understand the role of N-glycosylation in human immunity.
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Affiliation(s)
- Nathan T Mortimer
- Department of Biology, Emory University, Atlanta, Georgia, United States of America.
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Ridolo E, Olivieri E, Montagni M, Rolli A, Senna GE. Type I variant of Kounis syndrome secondary to wasp sting. Ann Allergy Asthma Immunol 2012; 109:79-81. [PMID: 22727167 DOI: 10.1016/j.anai.2012.05.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Revised: 04/04/2012] [Accepted: 05/07/2012] [Indexed: 11/16/2022]
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Wong CG, Borici-Mazi R. Delayed-onset cold anaphylaxis after hymenoptera sting. Ann Allergy Asthma Immunol 2012; 109:77-8. [PMID: 22727165 DOI: 10.1016/j.anai.2012.05.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2012] [Revised: 04/09/2012] [Accepted: 05/01/2012] [Indexed: 11/17/2022]
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Dalmau Duch G, Gázquez García V, Gaig Jané P, Galán Nieto A, Monsalve Clemente RI. Importance of controlled sting challenge and component-resolved diagnosis in the success of venom immunotherapy. J Investig Allergol Clin Immunol 2012; 22:135-136. [PMID: 22533237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Affiliation(s)
- G Dalmau Duch
- Allergology Section, Hospital Universitari de Tarragona Joan XXIII, Institut d'Investigació Sanitària Pere Virgili, Tarragona, Spain.
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Baracchi D, Mazza G, Turillazzi S. From individual to collective immunity: the role of the venom as antimicrobial agent in the Stenogastrinae wasp societies. J Insect Physiol 2012; 58:188-193. [PMID: 22108024 DOI: 10.1016/j.jinsphys.2011.11.007] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2011] [Revised: 11/04/2011] [Accepted: 11/08/2011] [Indexed: 05/31/2023]
Abstract
Sociality is associated with an increased risk of disease transmission and one of the first defense of the insect colonies is represented by antimicrobial secretions. In many eusocial hymenopteran species venom glands represent one of the most important source of antimicrobial substances. It is known that in highly eusocial species the venom is spread on both the cuticle of insects and the comb, thus becoming a component of the so called "social immunity". So far, it is never been ascertained whether this phenomenon is also present in more primitively eusocial and incipiently eusocial groups. Using incipiently eusocial hover wasps as model, we demonstrate that venom is present on insect cuticles and that it strongly acts against microorganisms. By contrast, the nest, regardless of materials, does not represent a ''medium" where the venom is deposited by wasps in order to act as a social antiseptic weapon. Our findings discussed in an evolutionary perspective indicate that a certain degree of sociality or a sufficient number of individuals in an insect society are thresholds to be reached for the rise of complex and efficient forms of collective and social immunity as mechanisms of resistance to diseases.
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Affiliation(s)
- David Baracchi
- Università degli Studi di Firenze, Dipartimento di Biologia Evoluzionistica Leo Pardi, Via Romana 17, 50125 Firenze, Italy.
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Provost B, Jouan V, Hilliou F, Delobel P, Bernardo P, Ravallec M, Cousserans F, Wajnberg E, Darboux I, Fournier P, Strand MR, Volkoff AN. Lepidopteran transcriptome analysis following infection by phylogenetically unrelated polydnaviruses highlights differential and common responses. Insect Biochem Mol Biol 2011; 41:582-591. [PMID: 21457783 DOI: 10.1016/j.ibmb.2011.03.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 03/16/2011] [Accepted: 03/20/2011] [Indexed: 05/30/2023]
Abstract
The Polydnaviridae is a family of double-stranded DNA viruses that are symbionts of parasitoid wasps. The family is currently divided into two genera, the Ichnovirus (IV) and Bracovirus (BV), which are associated with wasps in the families Ichneumonidae and Braconidae, respectively. IVs and BVs have similar immunosuppressive and developmental effects on parasitized hosts but their encapsidated genomes largely encode different genes. To assess whether IV and BV infection has similar or disparate effects on the transcriptome of shared hosts, we characterized the effects of Hyposoter didymator Ichnovirus (HdIV) and Microplitis demolitor Bracovirus (MdBV) on the fat body and hemocyte transcriptome of Spodoptera frugiperda (Lepidoptera: Noctuidae). Our results indicated that HdIV and MdBV infection alters the abundance of a relatively low proportion of S. frugiperda transcripts at 24 h post-infection. A majority of the transcripts affected by infection also differed between MdBV and HdIV. However, we did identify some host transcripts that were similarly affected by both viruses. A majority of these genes were transcribed in the fat body and most belonged to functional classes with roles in immunity, detoxification, or cell structure. Particularly prominent in this suite of transcripts were genes encoding for predicted motor-related and collagen IV-like proteins. Overall, our data suggest that the broadly similar effects that HdIV and MdBV have on host growth and immunity are not due to these viruses inducing profound changes in host gene expression. Given though that IVs and BVs encode few shared genes, the host transcripts that are similarly affected by HdIV and MdBV could indicate convergence by each virus to target a few processes at the level of transcription that are important for successful parasitism of hosts by H. didymator and M. demolitor.
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Affiliation(s)
- Bertille Provost
- UMR1333, INRA, Université Montpellier 2, Place Eugène Bataillon, cc101, F-34095 Montpellier Cedex 5, France
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Hoggard SJ, Wilson PD, Beattie AJ, Stow AJ. Social complexity and nesting habits are factors in the evolution of antimicrobial defences in wasps. PLoS One 2011; 6:e21763. [PMID: 21754998 PMCID: PMC3130748 DOI: 10.1371/journal.pone.0021763] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Accepted: 06/06/2011] [Indexed: 12/13/2022] Open
Abstract
Microbial diseases are important selective agents in social insects and one major defense mechanism is the secretion of cuticular antimicrobial compounds. We hypothesized that given differences in group size, social complexity, and nest type the secretions of these antimicrobials will be under different selective pressures. To test this we extracted secretions from nine wasp species of varying social complexity and nesting habits and assayed their antimicrobial compounds against cultures of Staphylococcus aureus. These data were then combined with phylogenetic data to provide an evolutionary context. Social species showed significantly higher (18x) antimicrobial activity than solitary species and species with paper nests showed significantly higher (11x) antimicrobial activity than those which excavated burrows. Mud-nest species showed no antimicrobial activity. Solitary, burrow-provisioning wasps diverged at more basal nodes of the phylogenetic trees, while social wasps diverged from the most recent nodes. These data suggest that antimicrobial defences may have evolved in response to ground-dwelling pathogens but the most important variable leading to increased antimicrobial strength was increase in group size and social complexity.
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Affiliation(s)
- Stephen J Hoggard
- Department of Biological Sciences, Macquarie University, North Ryde, Australia.
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