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Lopez C, Manotas F, Sánches A, Buendía E, Sánches JM, Muñera M, Urrego JR. [Hevea brasiliensis como fuente alergénica: revisión bibliográfica]. REVISTA ALERGIA MÉXICO 2023; 70:146-158. [PMID: 37933924 DOI: 10.29262/ram.v70i3.1236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 05/19/2023] [Indexed: 11/08/2023] Open
Abstract
Abstract La planta Hevea brasiliensis se utiliza ampliamente en la industria como fuente de extracción de caucho, un elemento empleado en diversas áreas comerciales y médicas. Los estudios inmunológicos de esta especie indican que es una fuente alergénica importante, que puede provocar sensibilización y alergia. Se han identificado diferentes componentes alergénicos de esta planta, con diversas propiedades inmunitarias y bioquímicas, y estudiado más de diez tipos diferentes de alérgenos, cada uno con distinta capacidad de inducir síntomas alérgicos. En esta revisión informamos los avances actuales en el estudio de Hevea brasiliensis.
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Leoni C, Manzari C, Chiara M, Veronico P, Bruno GL, Pesole G, Ceci LR, Volpicella M. Chitinolytic Enzymes of the Hyperparasite Fungus Aphanocladium album: Genome-Wide Survey and Characterization of A Selected Enzyme. Microorganisms 2023; 11:1357. [PMID: 37317333 DOI: 10.3390/microorganisms11051357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 05/12/2023] [Accepted: 05/15/2023] [Indexed: 06/16/2023] Open
Abstract
The filamentous fungus Aphanocladium album is known as a hyperparasite of plant pathogenic fungi; hence, it has been studied as a possible agent for plant protection. Chitinases secreted by A. album have proven to be essential for its fungicidal activity. However, no complete analysis of the A. album chitinase assortment has been carried out, nor have any of its chitinases been characterized yet. In this study, we report the first draft assembly of the genome sequence of A. album (strain MX-95). The in silico functional annotation of the genome allowed the identification of 46 genes encoding chitinolytic enzymes of the GH18 (26 genes), GH20 (8 genes), GH75 (8 genes), and GH3 (4 genes) families. The encoded proteins were investigated by comparative and phylogenetic analysis, allowing clustering in different subgroups. A. album chitinases were also characterized according to the presence of different functional protein domains (carbohydrate-binding modules and catalytic domains) providing the first complete description of the chitinase repertoire of A. album. A single chitinase gene was then selected for complete functional characterization. The encoded protein was expressed in the yeast Pichia pastoris, and its activity was assayed under different conditions of temperature and pH and with different substrates. It was found that the enzyme acts mainly as a chitobiosidase, with higher activity in the 37-50 °C range.
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Affiliation(s)
- Claudia Leoni
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, CNR, Via Amendola 165/A, 70126 Bari, Italy
| | - Caterina Manzari
- Department of Biosciences, Biotechnology and Enviroment, University of Bari "Aldo Moro", Via Amendola 165/A, 70126 Bari, Italy
| | - Matteo Chiara
- Department of Biosciences, Università degli Studi di Milano, Via Celoria 26, 20133 Milan, Italy
| | - Pasqua Veronico
- Institute for Sustainable Plant Protection, CNR, Via G. Amendola 122/D, 70126 Bari, Italy
| | - Giovanni Luigi Bruno
- Department of Soil, Plant and Food Sciences, University of Bari "Aldo Moro", Via Amendola 165/A, 70126 Bari, Italy
| | - Graziano Pesole
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, CNR, Via Amendola 165/A, 70126 Bari, Italy
- Department of Biosciences, Biotechnology and Enviroment, University of Bari "Aldo Moro", Via Amendola 165/A, 70126 Bari, Italy
- Interuniversity Consortium for Biotechnology, Località Padriciano, 99, Area di Ricerca, 34149 Trieste, Italy
| | - Luigi R Ceci
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, CNR, Via Amendola 165/A, 70126 Bari, Italy
| | - Mariateresa Volpicella
- Department of Biosciences, Biotechnology and Enviroment, University of Bari "Aldo Moro", Via Amendola 165/A, 70126 Bari, Italy
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3
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Dos Santos-Silva CA, Zupin L, Oliveira-Lima M, Vilela LMB, Bezerra-Neto JP, Ferreira-Neto JR, Ferreira JDC, de Oliveira-Silva RL, Pires CDJ, Aburjaile FF, de Oliveira MF, Kido EA, Crovella S, Benko-Iseppon AM. Plant Antimicrobial Peptides: State of the Art, In Silico Prediction and Perspectives in the Omics Era. Bioinform Biol Insights 2020; 14:1177932220952739. [PMID: 32952397 PMCID: PMC7476358 DOI: 10.1177/1177932220952739] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 07/30/2020] [Indexed: 12/14/2022] Open
Abstract
Even before the perception or interaction with pathogens, plants rely on constitutively guardian molecules, often specific to tissue or stage, with further expression after contact with the pathogen. These guardians include small molecules as antimicrobial peptides (AMPs), generally cysteine-rich, functioning to prevent pathogen establishment. Some of these AMPs are shared among eukaryotes (eg, defensins and cyclotides), others are plant specific (eg, snakins), while some are specific to certain plant families (such as heveins). When compared with other organisms, plants tend to present a higher amount of AMP isoforms due to gene duplications or polyploidy, an occurrence possibly also associated with the sessile habit of plants, which prevents them from evading biotic and environmental stresses. Therefore, plants arise as a rich resource for new AMPs. As these molecules are difficult to retrieve from databases using simple sequence alignments, a description of their characteristics and in silico (bioinformatics) approaches used to retrieve them is provided, considering resources and databases available. The possibilities and applications based on tools versus database approaches are considerable and have been so far underestimated.
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Affiliation(s)
| | - Luisa Zupin
- Genetic Immunology laboratory, Institute for Maternal and Child Health-IRCCS, Burlo Garofolo, Trieste, Italy
| | - Marx Oliveira-Lima
- Departamento de Genética, Universidade Federal de Pernambuco, Recife, Brazil
| | | | | | | | - José Diogo Cavalcanti Ferreira
- Departamento de Genética, Universidade Federal de Pernambuco, Recife, Brazil.,Departamento de Genética, Instituto Federal de Pernambuco, Pesqueira, Brazil
| | | | | | | | | | - Ederson Akio Kido
- Departamento de Genética, Universidade Federal de Pernambuco, Recife, Brazil
| | - Sergio Crovella
- Genetic Immunology laboratory, Institute for Maternal and Child Health-IRCCS, Burlo Garofolo, Trieste, Italy.,Department of Medicine, Surgery and Health Sciences, University of Trieste, Trieste, Italy
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4
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Liu K, Ding H, Yu Y, Chen B. A Cold-Adapted Chitinase-Producing Bacterium from Antarctica and Its Potential in Biocontrol of Plant Pathogenic Fungi. Mar Drugs 2019; 17:md17120695. [PMID: 31835449 PMCID: PMC6950295 DOI: 10.3390/md17120695] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 11/27/2019] [Accepted: 12/05/2019] [Indexed: 12/15/2022] Open
Abstract
To obtain chitinase-producing microorganisms with high chitinolytic activity at low temperature, samples collected from Fildes Peninsula in Antarctica were used as sources for bioprospecting of chitinolytic microorganisms. A cold-adapted strain, designated as GWSMS-1, was isolated from marine sediment and further characterized as Pseudomonas. To improve the chitinase production, one-factor-at-a-time and orthogonal test approaches were adopted to optimize the medium components and culture conditions. The results showed that the highest chitinolytic activity (6.36 times higher than that before optimization) was obtained with 95.41 U L-1 with 15 g L-1 of glucose, 1 g L-1 of peptone, 15 g L-1 of colloid chitin and 0.25 g L-1 of magnesium ions contained in the medium, cultivated under pH 7.0 and a temperature of 20 °C. To better understand the application potential of this strain, the enzymatic properties and the antifungal activity of the crude chitinase secreted by the strain were further investigated. The crude enzyme showed the maximum catalytic activity at 35 °C and pH 4.5, and it also exhibited excellent low-temperature activity, which still displayed more than 50% of its maximal activity at 0 °C. Furthermore, the crude chitinase showed significant inhibition of fungi Verticillium dahlia CICC 2534 and Fusarium oxysporum f. sp. cucumerinum CICC 2532, which can cause cotton wilt and cucumber blight, respectively, suggesting that strain GWSMS-1 could be a competitive candidate for biological control in agriculture, especially at low temperature.
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Affiliation(s)
- Kezhen Liu
- College of Marine Science, Shanghai Ocean University, Shanghai 201306, China;
- MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China;
| | - Haitao Ding
- MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China;
- Correspondence: (H.D.); (B.C.); Tel.: +86-21-5871-8663 (H.D.); +86-21-5871-1026 (B.C.)
| | - Yong Yu
- MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China;
| | - Bo Chen
- MNR Key Laboratory for Polar Science, Polar Research Institute of China, Shanghai 200136, China;
- Correspondence: (H.D.); (B.C.); Tel.: +86-21-5871-8663 (H.D.); +86-21-5871-1026 (B.C.)
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5
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Volpicella M, Leoni C, Dileo MCG, Ceci LR. Progress in the Analysis of Food Allergens through Molecular Biology Approaches. Cells 2019; 8:E1073. [PMID: 31547388 PMCID: PMC6770348 DOI: 10.3390/cells8091073] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/04/2019] [Accepted: 09/10/2019] [Indexed: 01/29/2023] Open
Abstract
Food allergies associated with class E immunoglobulins (IgE) are a serious health problem that affects between 1% and 10% of the population of developing countries, with a variability that depends on the geographical area and age range considered. These allergies are caused by a cross-link reaction between a specific food protein (the allergen) and the host IgE. Allergic reactions can range from mild itching to anaphylactic shock and there are no clues to predict the effects of an allergen. Strict avoidance of allergenic food is the only way to avoid possible serious allergic reactions. In the last 30 years a growing number of molecular studies have been conducted to obtain information on the diffusion of food allergens and to establish the structural basis of their allergenicity. At the same time, these studies have also allowed the development of molecular tools (mainly based on synthetic peptides and recombinant allergens) that can be of great help for diagnostic and therapeutic approaches of food allergies. Accordingly, this review focuses on advances in the study of food allergens made possible by molecular technologies and how results and technologies can be integrated for the development of a systematic food molecular allergology. The review may be of interest both to scientists approaching this field of investigation and to physicians who wish to have an update on the progress of research in diagnosis and therapy of food allergies.
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Affiliation(s)
- Mariateresa Volpicella
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Via Amendola 165/a, 70126 Bari, Italy.
- Institute of Bioenergetics, Biomembranes and Molecular Biotechnologies, Italian National Research Council, Via Amendola 165/a, 70126 Bari, Italy.
| | - Claudia Leoni
- Department of Biosciences, Biotechnologies and Biopharmaceutics, University of Bari, Via Amendola 165/a, 70126 Bari, Italy.
| | - Maria C G Dileo
- Department of Biology, University of Bari, Via Amendola 165/a, 70126 Bari, Italy.
| | - Luigi R Ceci
- Institute of Bioenergetics, Biomembranes and Molecular Biotechnologies, Italian National Research Council, Via Amendola 165/a, 70126 Bari, Italy.
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Xue L, Li Y, Li T, Pan H, Liu J, Fan M, Qian H, Zhang H, Ying H, Wang L. Phosphorylation and Enzymatic Hydrolysis with Alcalase and Papain Effectively Reduce Allergic Reactions to Gliadins in Normal Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6313-6323. [PMID: 31070910 DOI: 10.1021/acs.jafc.9b00569] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Gliadins are major allergens responsible for wheat allergies. Food processing is an effective strategy to reduce the allergenicity of gluten. In the present study, we determined the secondary and tertiary structures of gluten and gliadins treated by chemical, physical, and enzymatic means through FTIR, surface hydrophobicity, intrinsic fluorescence spectra, and UV absorption spectra. The results showed that the three treatments of phosphorylation and alcalase and papain hydrolyses significantly changed the conformational structures of gliadins, especially the secondary structure. Then, the potential allergenicity of the phosphorylated and alcalase and papain hydrolyzed gliadins were further characterized, and we observed a significant decrease in the allergenicity through the results of the index of spleen, serum total IgE, gliadin-specific IgE, histamine, and serum cytokine concentrations. An elevation of Th17 cells, the absence of Treg cells, and an imbalance in Treg/Th17 are associated with allergy. On the basis of the expression levels of related cytokines and key transcription factors, we also confirmed that phosphorylation and alcalase and papain hydrolysis could effectively reduce the allergenicity of gliadins by improving the imbalance of both Th1/Th2 and Treg/Th17 in the spleens of sensitized mice. This study suggested that the changes in conformational structure contribute to gliadin hyposensitization and that phosphorylation and alcalase and papain hydrolysis may be promising strategies for the production of wheat products with low allergenicity.
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Affiliation(s)
- Lamei Xue
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , Wuxi 214122 , People's Republic of China
| | - Yan Li
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , Wuxi 214122 , People's Republic of China
| | - Tingting Li
- Department of Food Science and Engineering, College of Light Industry and Food Engineering , Nanjing Forestry University , Nanjing 210037 , People's Republic of China
| | - Haiou Pan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , Wuxi 214122 , People's Republic of China
| | - Jinxin Liu
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , Wuxi 214122 , People's Republic of China
| | - Mingcong Fan
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , Wuxi 214122 , People's Republic of China
| | - Haifeng Qian
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , Wuxi 214122 , People's Republic of China
| | - Hui Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , Wuxi 214122 , People's Republic of China
| | - Hao Ying
- CAS Key laboratory of nutrition, metabolism and food safety, Shanghai Institutes for Biological Sciences , University of Chinese Academy of Sciences, Chinese Academy of Sciences , Shanghai 200031 , People's Republic of China
| | - Li Wang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology , Jiangnan University , Wuxi 214122 , People's Republic of China
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Ramos MV, Demarco D, da Costa Souza IC, de Freitas CDT. Laticifers, Latex, and Their Role in Plant Defense. TRENDS IN PLANT SCIENCE 2019; 24:553-567. [PMID: 30979674 DOI: 10.1016/j.tplants.2019.03.006] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 03/11/2019] [Accepted: 03/12/2019] [Indexed: 06/09/2023]
Abstract
Latex, a sap produced by cells called laticifers, occurs in plants of wide taxonomic diversity. Plants exude latex sap in response to physical damage. Questions about the function of latex or the underlying mechanisms persist, but a role in defense is likely. The presence of constitutive peptidases in latex sap in addition to inducible and de novo synthesized pathogenesis-related proteins (PR-proteins), raises the question about the role that each sap component plays to protect plants and how synergism occurs among sap proteins in the course of herbivory or infection. Here we discuss a variety of functions for laticifer and latex in plant defense. We propose that latex peptidases build the front line of defense against herbivores or pathogens.
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Affiliation(s)
- Márcio Viana Ramos
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Bloco 907, Fortaleza-Ceará, CEP 60451-970, Brazil.
| | - Diego Demarco
- Departamento de Botânica, Instituto de Biociências, Universidade de São Paulo, São Paulo, SP, CEP 05508-090, Brazil
| | - Isabel Cristina da Costa Souza
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Bloco 907, Fortaleza-Ceará, CEP 60451-970, Brazil
| | - Cleverson Diniz Teixeira de Freitas
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Bloco 907, Fortaleza-Ceará, CEP 60451-970, Brazil
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8
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Chitinases as Food Allergens. Molecules 2019; 24:molecules24112087. [PMID: 31159327 PMCID: PMC6600546 DOI: 10.3390/molecules24112087] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Revised: 05/16/2019] [Accepted: 05/22/2019] [Indexed: 01/08/2023] Open
Abstract
Food allergies originate from adverse immune reactions to some food components. Ingestion of food allergens can cause effects of varying severity, from mild itching to severe anaphylaxis reactions. Currently there are no clues to predict the allergenic potency of a molecule, nor are cures for food allergies available. Cutting-edge research on allergens is aimed at increasing information on their diffusion and understanding structure-allergenicity relationships. In this context, purified recombinant allergens are valuable tools for advances in the diagnostic and immunotherapeutic fields. Chitinases are a group of allergens often found in plant fruits, but also identified in edible insects. They are classified into different families and classes for which structural analyses and identification of epitopes have been only partially carried out. Moreover, also their presence in common allergen databases is not complete. In this review we provide a summary of the identified food allergenic chitinases, their main structural characteristics, and a clear division in the different classes.
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Bastiaan-Net S, Reitsma M, Cordewener JHG, van der Valk JPM, America TAHP, Dubois AEJ, Gerth van Wijk R, Savelkoul HFJ, de Jong NW, Wichers HJ. IgE Cross-Reactivity of Cashew Nut Allergens. Int Arch Allergy Immunol 2018; 178:19-32. [PMID: 30368491 DOI: 10.1159/000493100] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/21/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Allergic sensitisation towards cashew nut often happens without a clear history of eating cashew nut. IgE cross-reactivity between cashew and pistachio nut is well described; however, the ability of cashew nut-specific IgE to cross-react to common tree nut species and other Anacardiaceae, like mango, pink peppercorn, or sumac is largely unknown. OBJECTIVES Cashew nut allergic individuals may cross-react to foods that are phylogenetically related to cashew. We aimed to determine IgE cross-sensitisation and cross-reactivity profiles in cashew nut-sensitised subjects, towards botanically related proteins of other Anacardiaceae family members and related tree nut species. METHOD Sera from children with a suspected cashew nut allergy (n = 56) were assessed for IgE sensitisation to common tree nuts, mango, pink peppercorn, and sumac using dot blot technique. Allergen cross-reactivity patterns between Anacardiaceae species were subsequently examined by SDS-PAGE and immunoblot inhibition, and IgE-reactive allergens were identified by LC-MS/MS. RESULTS From the 56 subjects analysed, 36 were positive on dot blot for cashew nut (63%). Of these, 50% were mono-sensitised to cashew nuts, 19% were co-sensitised to Anacardiaceae species, and 31% were co-sensitised to tree nuts. Subjects co-sensitised to Anacardiaceae species displayed a different allergen recognition pattern than subjects sensitised to common tree nuts. In pink peppercorn, putative albumin- and legumin-type seed storage proteins were found to cross-react with serum of cashew nut-sensitised subjects in vitro. In addition, a putative luminal binding protein was identified, which, among others, may be involved in cross-reactivity between several Anacardiaceae species. CONCLUSIONS Results demonstrate the in vitro presence of IgE cross-sensitisation in children towards multiple Anacardiaceae species. In this study, putative novel allergens were identified in cashew, pistachio, and pink peppercorn, which may pose factors that underlie the observed cross-sensitivity to these species. The clinical relevance of this widespread cross-sensitisation is unknown.
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Affiliation(s)
- Shanna Bastiaan-Net
- Wageningen Food and Biobased Research, Wageningen University and Research, Wageningen, The
| | - Marit Reitsma
- Wageningen Food and Biobased Research, Wageningen University and Research, Wageningen, The Netherlands.,Food Chemistry, Wageningen University, Wageningen, The Netherlands
| | - Jan H G Cordewener
- Wageningen Plant Research, Wageningen University and Research, Wageningen, The Netherlands
| | | | - Twan A H P America
- Wageningen Plant Research, Wageningen University and Research, Wageningen, The Netherlands
| | - Anthony E J Dubois
- GRIAC Research Institute, Department of Pediatric Pulmonology and Pediatric Allergology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Roy Gerth van Wijk
- Section of Allergology, Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Huub F J Savelkoul
- Cell Biology and Immunology Group, Wageningen University, Wageningen, The Netherlands
| | - Nicolette W de Jong
- Section of Allergology, Department of Internal Medicine, Erasmus MC, Rotterdam, The Netherlands
| | - Harry J Wichers
- Wageningen Food and Biobased Research, Wageningen University and Research, Wageningen, The Netherlands
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Tuppo L, Giangrieco I, Alessandri C, Ricciardi T, Rafaiani C, Ciancamerla M, Ferrara R, Zennaro D, Bernardi ML, Tamburrini M, Mari A, Ciardiello MA. Pomegranate chitinase III: Identification of a new allergen and analysis of sensitization patterns to chitinases. Mol Immunol 2018; 103:89-95. [PMID: 30241023 DOI: 10.1016/j.molimm.2018.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 08/30/2018] [Accepted: 09/10/2018] [Indexed: 12/12/2022]
Abstract
Allergy to pomegranate is often associated with severe symptoms. Two allergens have previously been described: 9k-LTP Pun g 1 and pommaclein Pun g 7. This study describes the isolation of a chitinase III, identified by direct protein sequencing and mass spectrometry. It is a 29-kDa protein showing 69% sequence identity with the latex hevamine and IgE binding in dot blotting, immunoblotting and FABER®test. Chitinase-specific IgE were detected in 69 of 357 patients sensitized to one or more pomegranate allergenic preparations present on the FABER®test. Using this test, 19.2% of the patients sensitized to kiwifruit chitinase IV were also sensitized to pomegranate chitinase III, rather than to latex chitinase I (7.2%) with which it shares the N-terminal hevein-like domain. In conclusion, a new allergen has been identified, contributing to improving food allergy diagnosis. This study reveals the important role of chitinases III and IV as allergy sensitizers and prompts further investigations.
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Affiliation(s)
- Lisa Tuppo
- Institute of Biosciences and BioResources, CNR, I-80131 Naples, Italy; Allergy Data Laboratories s.r.l., Latina, Italy
| | - Ivana Giangrieco
- Institute of Biosciences and BioResources, CNR, I-80131 Naples, Italy; Allergy Data Laboratories s.r.l., Latina, Italy
| | - Claudia Alessandri
- Allergy Data Laboratories s.r.l., Latina, Italy; Associated Centers for Molecular Allergology, Rome, Italy; Center for Molecular Allergology, IDI-IRCCS, Rome, Italy
| | - Teresa Ricciardi
- Institute of Biosciences and BioResources, CNR, I-80131 Naples, Italy
| | - Chiara Rafaiani
- Allergy Data Laboratories s.r.l., Latina, Italy; Center for Molecular Allergology, IDI-IRCCS, Rome, Italy
| | | | - Rosetta Ferrara
- Allergy Data Laboratories s.r.l., Latina, Italy; Associated Centers for Molecular Allergology, Rome, Italy; Center for Molecular Allergology, IDI-IRCCS, Rome, Italy
| | - Danila Zennaro
- Allergy Data Laboratories s.r.l., Latina, Italy; Associated Centers for Molecular Allergology, Rome, Italy; Center for Molecular Allergology, IDI-IRCCS, Rome, Italy
| | - Maria Livia Bernardi
- Allergy Data Laboratories s.r.l., Latina, Italy; Associated Centers for Molecular Allergology, Rome, Italy; Center for Molecular Allergology, IDI-IRCCS, Rome, Italy
| | | | - Adriano Mari
- Allergy Data Laboratories s.r.l., Latina, Italy; Associated Centers for Molecular Allergology, Rome, Italy; Center for Molecular Allergology, IDI-IRCCS, Rome, Italy
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11
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Novel low-abundance allergens from mango via combinatorial peptide libraries treatment: A proteomics study. Food Chem 2018; 269:652-660. [PMID: 30100485 DOI: 10.1016/j.foodchem.2018.06.113] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 05/22/2018] [Accepted: 06/21/2018] [Indexed: 11/24/2022]
Abstract
Mango allergy is a rare condition, which may cause severe hypersensitivity reactions, such as anaphylaxis, angioedema, asthma and contact dermatitis. By exploiting the combinatorial peptide ligand library (CPLL) technology, mango proteomes have been extracted and the presence of traces of allergens assessed via Western blot analysis two-dimensional maps. Upon reactive spot elution and mass spectrometry analyses, four major mango allergens could be identified for the first time and shown to be in common with three of the five known banana species. These allergens include: Mus a 1, Mus a 2 and Mus a 5. Additional mango allergens detected do not seem to be in common with the banana species. In particular, a pectinesterase and a superoxide dismutase, both widely described as allergens, could be identified in mango extracts. Conversely, plain mango extracts not treated with CPLLs did not exhibit any reactive spots in Western blot analysis.
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12
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Volpicella M, Leoni C, Fanizza I, Distaso M, Leoni G, Farioli L, Naumann T, Pastorello E, Ceci LR. Characterization of maize chitinase-A, a tough allergenic molecule. Allergy 2017; 72:1423-1429. [PMID: 28328103 DOI: 10.1111/all.13164] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/18/2017] [Indexed: 11/29/2022]
Abstract
Food allergies are recognized as an increasing health concern. Proteins commonly identified as food allergens tend to have one of about 30 different biochemical activities. This leads to the assumption that food allergens must have specific structural features which causes their allergenicity. But these structural features are not completely understood. Uncovering the structural basis of allergenicity would allow improved diagnosis and therapy of allergies and would provide insights for safer food production. The availability of recombinant food allergens can accelerate their structural analysis and benefit specific studies in allergology. Plant chitinases are an example of food allergenic proteins for which structural analysis of allergenicity has only partially been reported. The recombinant maize chitinase, rChiA, was purified from Pichia pastoris extracellular medium by differential precipitation and cation exchange chromatography. Enzyme activity was evaluated by halo-assays and microcalorimetric procedures. rChiA modeling was performed by a two-step procedure, using the Swiss-Model server and Modeller software. Allergenicity of rChiA was verified by immunoblot assays with sera from allergic subjects. rChiA is active in the hydrolysis of glycol chitin and tetra-N-acetylchitotetraose and maintains its activity at high temperatures (70°C) and low pH (pH 3). The molecule is also reactive with IgE from sera of maize-allergic subjects. rChiA is a valuable molecule for further studies on structure-allergenicity relationships and as a tool for diagnosing allergies.
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Affiliation(s)
- M. Volpicella
- Department of Biosciences, Biotechnologies and Biopharmaceutics; University of Bari; Bari Italy
| | - C. Leoni
- Department of Biosciences, Biotechnologies and Biopharmaceutics; University of Bari; Bari Italy
| | - I. Fanizza
- Department of Biosciences, Biotechnologies and Biopharmaceutics; University of Bari; Bari Italy
| | - M. Distaso
- Department of Biosciences, Biotechnologies and Biopharmaceutics; University of Bari; Bari Italy
| | | | - L. Farioli
- Department of Laboratory Medicine; ASST Grande Ospedale Metropolitano Niguarda Ca' Granda; Milano Italy
| | - T. Naumann
- Mycotoxin Prevention and Applied Mycology Research Unit; US Department of Agriculture-Agricultural Research Service-National Centre for Agricultural Utilization Research (USDA-ARS-NCAUR); Peoria Illinois
| | - E. Pastorello
- Department of Allergology and Immunology; ASST Grande Ospedale Metropolitano Niguarda Ca' Granda; Milano Italy
| | - L. R. Ceci
- Institute of Biomembranes and Bioenergetics; National Research Council; Bari Italy
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