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Curulli A. Recent Advances in Electrochemical Sensing Strategies for Food Allergen Detection. BIOSENSORS 2022; 12:bios12070503. [PMID: 35884306 PMCID: PMC9313194 DOI: 10.3390/bios12070503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/06/2022] [Accepted: 07/07/2022] [Indexed: 02/06/2023]
Abstract
Food allergy has been indicated as the most frequent adverse reaction to food ingredients over the past few years. Since the only way to avoid the occurrence of allergic phenomena is to eliminate allergenic foods, it is essential to have complete and accurate information on the components of foodstuff. In this framework, it is mandatory and crucial to provide fast, cost-effective, affordable, and reliable analysis methods for the screening of specific allergen content in food products. This review reports the research advancements concerning food allergen detection, involving electrochemical biosensors. It focuses on the sensing strategies evidencing different types of recognition elements such as antibodies, nucleic acids, and cells, among others, the nanomaterial role, the several electrochemical techniques involved and last, but not least, the ad hoc electrodic surface modification approaches. Moreover, a selection of the most recent electrochemical sensors for allergen detection are reported and critically analyzed in terms of the sensors’ analytical performances. Finally, advantages, limitations, and potentialities for practical applications of electrochemical biosensors for allergens are discussed.
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Affiliation(s)
- Antonella Curulli
- Consiglio Nazionale delle Ricerche (CNR), Istituto per lo Studio dei Materiali Nanostrutturati (ISMN), 00161 Rome, Italy
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2
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Basophil Activation Test Utility as a Diagnostic Tool in LTP Allergy. Int J Mol Sci 2022; 23:ijms23094979. [PMID: 35563370 PMCID: PMC9105056 DOI: 10.3390/ijms23094979] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 12/10/2022] Open
Abstract
Plant-food allergy is an increasing problem, with nonspecific lipid transfer proteins (nsLTPs) triggering mild/severe reactions. Pru p 3 is the major sensitizer in LTP food allergy (FA). However, in vivo and in vitro diagnosis is hampered by the need for differentiating between asymptomatic sensitization and allergy with clinical relevance. The basophil activation test (BAT) is an ex vivo method able to identify specific IgE related to the allergic response. Thus, we aimed to establish the value of BAT in a precise diagnosis of LTP-allergic patients. Ninety-two individuals with peach allergy sensitized to LTP, Pru p 3, were finally included, and 40.2% of them had symptoms to peanut (n = 37). In addition, 16 healthy subjects were recruited. BAT was performed with Pru p 3 and Ara h 9 (peanut LTP) at seven ten-fold concentrations, and was evaluated by flow cytometry, measuring the percentage of CD63 (%CD63+) and CD203c (%CD203chigh) cells, basophil allergen threshold sensitivity (CD-Sens), and area under the dose−response curve (AUC). Significant changes in BAT parameters (%CD63+ and %CD203chigh) were found between the controls and patients. However, comparisons for %CD63+, %CD203chigh, AUC, and CD-Sens showed similar levels among patients with different symptoms. An optimal cut-off was established from ROC curves, showing a significant positive percentage of BAT in patients compared to controls and great values of sensitivity (>87.5%) and specificity (>85%). In addition, BAT showed differences in LTP-allergic patients tolerant to peanut using its corresponding LTP, Ara h 9. BAT can be used as a potential diagnostic tool for identifying LTP allergy and for differentiating peanut tolerance, although neither reactivity nor sensitivity can distinguish the severity of the clinical symptoms.
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3
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Tomato Allergy: The Characterization of the Selected Allergens and Antioxidants of Tomato ( Solanum lycopersicum)-A Review. Antioxidants (Basel) 2022; 11:antiox11040644. [PMID: 35453329 PMCID: PMC9031248 DOI: 10.3390/antiox11040644] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/21/2022] [Accepted: 03/22/2022] [Indexed: 12/05/2022] Open
Abstract
Tomatoes are one of the most broadly produced and consumed crop plants. They are the source of health-promoting nutrients such as antioxidants, including ascorbic acid, polyphenols, or carotenoids. Despite the beneficial role of tomatoes in the daily diet, they have been confirmed as one of the most prevalent allergenic vegetables. Food allergies can cause many clinical symptoms, e.g., in the gastrointestinal tract, skin, and lungs, as well as anaphylactic shock. A huge amount of clinical research has been carried out to improve the understanding of the immunological mechanisms that lead to the lack of tolerance of food antigens, which can result in either immunoglobulin E (IgE)-mediated reactions or non-IgE-mediated reactions. Lifestyle and diet play an important role in triggering food allergies. Allergy to tomatoes is also linked to other allergies, such as grass pollen and latex allergy. Numerous attempts have been made to identify and characterize tomato allergens; however, the data available on the subject are not sufficient.
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Somoza ML, Prieto-Moreno Pfeifer A, Martín-Pedraza L, Victorio Puche L, Esteban Rodríguez A, Blanca-López N, Eva Fernández González A, Fernández-Caldas E, Morán Morales M, Fernández-Sánchez FJ, López Sánchez JD, Garrido-Lestache JLS, Canto G, Blanca M. Skin Testing With Peach Peel Extract Versus Serum IgE to Pru p 3 as a Stronger Predictor of Peach-Induced Anaphylaxis. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2021; 13:922-932. [PMID: 34734509 PMCID: PMC8569022 DOI: 10.4168/aair.2021.13.6.922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 07/25/2021] [Accepted: 08/17/2021] [Indexed: 11/20/2022]
Abstract
The most important peach fruit allergen is Pru p 3, followed by Pru p 1, Pru p 4, and Pru p 7. We aimed to assess their role in subjects with peach fruit-induced allergy (anaphylaxis and OAS) and compare skin prick tests (SPT) vs. specific immunoglobulin E (sIgE) for predicting anaphylaxis. We also selected a control group. SPT included prevalent inhalant and plant food allergens plus peach peel extract. The sIgE to Pru p 1, Pru p 3, Pru p 4, and Pru p 7 were quantified. Compared with controls (n = 42), cases (n = 41) were younger (P = 0.003), more frequently female (P < 0.05) and had higher SPT positivity to peach peel (44% vs. 2.4%, P < 0.0001). There were significant differences in sensitization to several pollens: Olea europaea, Artemisia vulgaris, Prunus persica, Platanus acerifolia (all P < 0.001); and fruits: apple (P < 0.04), peanut (P < 0.002), tomato (P < 0.005), and melon (P < 0.05). Pru p 3 sIgE was detected in 61% of all cases (85% anaphylaxis and 38% OAS; P < 0.01 each) and 5% of controls (P < 0.001). Pru p 4 sIgE was present in 19% of cases and 7% of controls. The sIgE to Pru p 1 and Pru p 7 were not found. The odds ratio to predict anaphylaxis for peach peel SPT was 113 (confidence interval [CI], 20–613; P < 0.0001); for sIgE to Pru p 3, 22 (CI, 5.3–93; P < 0.0001); and for SPT positivity to selected plant food allergens, 5 (CI, 1–19; P < 0.05). In our study group, SPT with peel peach extract was a better predictor of anaphylaxis than Pru p 3 sIgE or other variables considered. The role of sIgE to Pru p 1, Pru p 4, and Pru p 7 seemed negligible.
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Affiliation(s)
- Maria Luisa Somoza
- Department of Allergy, Infanta Leonor University Hospital, Madrid, Spain.
| | | | - Laura Martín-Pedraza
- Department of Allergy, Fundación para la Investigación e Innovación Biomédica (FIIB) de los Hospitales Universitarios Infanta Leonor y Sureste, Madrid, Spain
| | - Laura Victorio Puche
- Department of Allergy, Morales Meseguer General University Hospital, Murcia, Spain
| | | | | | | | - Enrique Fernández-Caldas
- R&D Department, Inmunotek Laboratories, Madrid, Spain.,Division of Allergy and Immunology, University of South Florida College of Medicine, Tampa, FL, USA
| | | | - Francisco Javier Fernández-Sánchez
- Department of Allergy, General University Hospital of Alicante-ISABIAL, Alicante, Spain.,Department of Clinical Medicine, Miguel Hernandez University, Alicante, Spain
| | | | | | - Gabriela Canto
- Department of Allergy, Infanta Leonor University Hospital, Madrid, Spain.,School of Medicine, Universidad Complutense de Madrid, Madrid, Spain
| | - Miguel Blanca
- Department of Allergy, Infanta Leonor University Hospital, Madrid, Spain
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Du B, Chen N, Song L, Wang D, Cai H, Yao L, Li X, Guo C. Alfalfa (Medicago sativa L.) MsCML46 gene encoding calmodulin-like protein confers tolerance to abiotic stress in tobacco. PLANT CELL REPORTS 2021; 40:1907-1922. [PMID: 34322731 DOI: 10.1007/s00299-021-02757-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 07/15/2021] [Indexed: 05/20/2023]
Abstract
KEY MESSAGE MsCML46 enhances tolerance to abiotic stresses through alleviating osmotic stress and oxidative damage by regulating the expression of stress-related genes to optimize osmolytes levels and antioxidant enzyme activity in transgenic tobacco. Abiotic stresses are major environmental factors that constraint crop productivity worldwide. Various stimuli regulate intracellular calcium levels and calcium-mediated signal transduction, and cellular responses. Ca2+ signals are perceived by different Ca2+ receptors. Calmodulin-like protein (CML) is one of the best-characterized Ca2+ sensors which shares sequence similarity with highly conserved calmodulin (CaM) ubiquitously expressed in plants. Currently, the molecular and physiological functions of CMLs are largely unknown. In this study, the MsCML46 was characterized in alfalfa (Medicago sativa cv. Zhaodong) under freezing stress. Results showed that MsCML46 was localized to the cytoplasm of Arabidopsis, and its expression was strongly elevated by cold, drought, salt, saline-alkali, and ABA treatments. Overexpressing MsCML46 in tobacco enhanced tolerance to freezing, drought, and salt stresses as evidenced by improved contents of osmotic regulatory solutes and antioxidant enzyme activity but decreased reactive oxygen species (ROS) accumulation. Furthermore, cold, drought, and salt stresses increased the expression of stress-related genes in transgenic tobacco. MsCML46 binds free Ca2+ to promote signal transduction and maintain higher K+/Na+ ratio. In this way, it protects intracellular homeostasis under sodium ion toxicity. These results suggest that MsCML46 plays a crucial role in resisting abiotic stresses and can be exploited in genetic engineering for crops.
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Affiliation(s)
- Binghao Du
- Key Laboratory of Molecular and Cytogenetics, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, Heilongjiang, China
| | - Naiyu Chen
- Key Laboratory of Molecular and Cytogenetics, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, Heilongjiang, China
| | - Lili Song
- Key Laboratory of Molecular and Cytogenetics, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, Heilongjiang, China
- Biotech Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, 201106, China
| | - Dan Wang
- Key Laboratory of Molecular and Cytogenetics, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, Heilongjiang, China
| | - Hongsheng Cai
- Key Laboratory of Molecular and Cytogenetics, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, Heilongjiang, China
| | - Lin Yao
- Key Laboratory of Molecular and Cytogenetics, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, Heilongjiang, China
| | - Xiuting Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Beijing, 100048, China
| | - Changhong Guo
- Key Laboratory of Molecular and Cytogenetics, College of Life Science and Technology, Harbin Normal University, Harbin, 150025, Heilongjiang, China.
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6
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Somoza ML, Pérez-Sánchez N, Victorio-Puche L, Martín-Pedraza L, Esteban Rodríguez A, Blanca-López N, Abel Fernández González E, Ruano-Zaragoza M, Prieto-Moreno Pfeifer A, Fernández Caldas E, Morán Morales M, Fernández Sánchez FJ, López Sánchez JD, Jiménez Rodríguez TW, Subiza Garrido-Lestache JL, Canto Díez G, Blanca Gómez M, Cornejo-García JA. Subjects develop tolerance to Pru p 3 but respiratory allergy to Pru p 9: A large study group from a peach exposed population. PLoS One 2021; 16:e0255305. [PMID: 34411133 PMCID: PMC8376049 DOI: 10.1371/journal.pone.0255305] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 07/13/2021] [Indexed: 11/19/2022] Open
Abstract
Peach tree allergens are present in fruit, pollen, branches, and leaves, and can induce systemic, respiratory, cutaneous, and gastrointestinal symptoms. We studied the capacity of peach fruit/Pru p 1, Pru p 3, Pru p 4, Pru p 7 and peach pollen/Pru p 9 for inducing symptoms following oral or respiratory exposure in a large group of subjects. We included 716 adults (aged 21 to 83 y.o.) exposed to peach tree pollen and fruit intake in the study population. Participants completed a questionnaire and were skin tested with a panel of inhalant and food allergens, including peach tree pollen, Pru p 9 and peach fruit skin extract. Immunoglobulin E antibodies (SIgE) to Pru p 1, Pru p 3, Pru p 4 and Pru p 7 were quantified. Sensitised subjects underwent oral food challenge with peach fruit and nasal provocation test with peach tree pollen and Pru p 9. The prevalence of sensitisation to peach fruit was 5% and most of these had SIgE to Pru p 3, with a very low proportion to Pru p 4 SIgE and no SIgE to Pru p 1 and Pru p 7. In only 1.8%, anaphylaxis was the clinical entity induced. Cases with positive skin tests to peach and SIgE to Pru p 3 presented a good tolerance after oral challenge with peach fruit. The prevalence of skin sensitisation to peach tree pollen was 22%, with almost half recognising Pru p 9. This induced respiratory symptoms in those evaluated by nasal provocation. In a large population group exposed to peach fruit and peach tree pollen, most individuals were tolerant, even in those with SIgE to Pru p 3. A positive response to Pru p 9 was associated with respiratory allergy.
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Affiliation(s)
- Maria Luisa Somoza
- Allergy Department, Infanta Leonor University Hospital, Madrid, Spain
- * E-mail:
| | - Natalia Pérez-Sánchez
- Allergy Department, Hospital Regional Universitario de Málaga, Málaga-IBIMA, Málaga, Spain
| | | | - Laura Martín-Pedraza
- Allergy Department, Fundación para la Investigación e Innovación Biomédica (FIIB) de los Hospitales Universitarios Infanta Leonor y Sureste, Madrid, Spain
| | | | | | | | - María Ruano-Zaragoza
- Allergy Department, General University Hospital of Alicante- ISABIAL, Alicante, Spain
| | | | | | | | | | | | | | | | | | - Miguel Blanca Gómez
- Allergy Department, Fundación para la Investigación e Innovación Biomédica (FIIB) de los Hospitales Universitarios Infanta Leonor y Sureste, Madrid, Spain
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7
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Skypala IJ, Bartra J, Ebo DG, Antje Faber M, Fernández‐Rivas M, Gomez F, Luengo O, Till SJ, Asero R, Barber D, Cecchi L, Diaz Perales A, Hoffmann‐Sommergruber K, Anna Pastorello E, Swoboda I, Konstantinopoulos AP, Ree R, Scala E. The diagnosis and management of allergic reactions in patients sensitized to non-specific lipid transfer proteins. Allergy 2021; 76:2433-2446. [PMID: 33655502 DOI: 10.1111/all.14797] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/29/2021] [Accepted: 02/24/2021] [Indexed: 12/12/2022]
Abstract
Sensitization to one or more non-specific lipid transfer proteins (nsLTPs), initially thought to exist mainly in southern Europe, is becoming accepted as a cause of allergic reactions to plant foods across Europe and beyond. The peach nsLTP allergen Pru p 3 is a dominant sensitizing allergen and peaches a common food trigger, although multiple foods can be involved. A frequent feature of reactions is the requirement for a cofactor (exercise, alcohol, non-steroidal anti-inflammatory drugs, Cannabis sativa) to be present for a food to elicit a reaction. The variability in the food and cofactor triggers makes it essential to include an allergy-focused diet and clinical history in the diagnostic workup. Testing on suspected food triggers should also establish whether sensitization to nsLTP is present, using purified or recombinant nsLTP allergens such as Pru p 3. The avoidance of known trigger foods and advice on cofactors is currently the main management for this condition. Studies on immunotherapy are promising, but it is unknown whether such treatments will be useful in populations where Pru p 3 is not the primary sensitizing allergen. Future research should focus on the mechanisms of cofactors, improving diagnostic accuracy and establishing the efficacy of immunotherapy.
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Affiliation(s)
- Isabel J. Skypala
- Royal Brompton & Harefield NHS Foundation Trust London UK
- Department of Allergy and Clinical Immunology Imperial College London UK
| | - Joan Bartra
- Hospital Clinic Barcelona Spain
- IDIBAPS Universitat de Barcelona ARADyAL, Barcelona Spain
| | - Didier G. Ebo
- Department of Immunology, Allergology, Rheumatology Faculty of Medicine and Health Sciences Infla‐Med Centre of Excellence Antwerp University Hospital University of Antwerp Antwerp Belgium
- Jan Palfijn Ziekenhuis Ghent Ghent Belgium
| | - Margaretha Antje Faber
- Faculty of Medicine and Health Sciences Department of Immunology, Allergology, Rheumatology Infla‐Med Centre of Excellence Antwerp University Hospital University of Antwerp Antwerp Belgium
| | - Montserrat Fernández‐Rivas
- Department of Allergy Hospital Clínico San Carlos Universidad Complutense de Madrid IdISSC ARADyAL Madrid Spain
| | - Francisca Gomez
- Allergy Unit IBIMA—Hospital Regional Universitario de Malaga Malaga Spain
- Spanish Network for Allergy ‐ RETICS de Asma Reaccionesadversas y Alérgicas (ARADyAL Madrid Spain
| | - Olga Luengo
- Allergy Unit Internal Medicine Department Vall d'Hebron University Hospital Universitat Autònoma de Barcelona ARADyAL Barcelona Spain
| | - Stephen J. Till
- Peter Gorer Department of Immunobiology King’s College London London UK
- Department of Allergy Guy’s & St Thomas’ NHS Foundation Trust London UK
| | - Riccardo Asero
- Ambulatorio di Allergologia Clinica San Carlo Paderno Dugnano Italy
| | - Domingo Barber
- IMMA School of Medicine Universidad San Pablo CEU, Universities Madrid Spain
- RETIC ARADYAL RD16/0006/0015 Instituto de Salud Carlos III Madrid Spain
| | - Lorenzo Cecchi
- SOS Allergy and Clinical Immunology USL Toscana Centro Prato Italy
| | - Araceli Diaz Perales
- Centro de Biotecnología y Genómica de Plantas Universidad Politecnica Madrid Spain
| | | | - Elide Anna Pastorello
- Unit of Allergology and Immunology ASST Grande Ospedale Metropolitano Niguarda University of Milan Milan Italy
| | - Ines Swoboda
- Biotechnology Section Campus Vienna Biocenter FH Campus Wien, University of Applied Sciences Vienna Austria
| | | | - Ronald Ree
- Department of Experimental Immunology Amsterdam University Medical Centers, location AMC Amsterdam The Netherlands
- Department of Otorhinolaryngology Amsterdam University Medical Centers, location AMC Amsterdam The Netherlands
| | - Enrico Scala
- Experimental Allergy Unit Istituto Dermopatico dell’Immacolata – IRCCS FLMM Rome Italy
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Characterization of Relevant Biomarkers for the Diagnosis of Food Allergies: An Overview of the 2S Albumin Family. Foods 2021; 10:foods10061235. [PMID: 34072292 PMCID: PMC8228421 DOI: 10.3390/foods10061235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/17/2021] [Accepted: 05/24/2021] [Indexed: 11/17/2022] Open
Abstract
2S albumins are relevant and often major allergens from several tree nuts and seeds, affecting mainly children and young people. The present study aims to assess how the structural features of 2S albumins could affect their immunogenic capacity, which is essential to comprehend the role of these proteins in food allergy. For this purpose, twelve 2S albumins were isolated from their respective extracts by chromatographic methods and identified by MALDI-TOF mass-spectrometry. Their molecular and structural characterization was conducted by electrophoretic, spectroscopic and in silico methods, showing that these are small proteins that comprise a wide range of isoelectric points, displaying a general high structure stability to thermal treatment. Despite low amino acid sequence identity, these proteins share structural features, pointing conformational epitopes to explain cross-reactivity between them. Immunoblotting with allergic patients’ sera revealed those possible correlations between evolutionarily distant 2S albumins from different sources. The availability of a well-characterized panel of 2S albumins from plant-derived sources allowed establishing correlations between their structural features and their allergenic potential, including their role in cross-reactivity processes.
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9
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Martín-Pedraza L, Mayorga C, Gomez F, Bueno-Díaz C, Blanca-Lopez N, González M, Martínez-Blanco M, Cuesta-Herranz J, Molina E, Villalba M, Benedé S. IgE-Reactivity Pattern of Tomato Seed and Peel Nonspecific Lipid-Transfer Proteins after in Vitro Gastrointestinal Digestion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:3511-3518. [PMID: 33719421 PMCID: PMC9134490 DOI: 10.1021/acs.jafc.0c06949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/29/2021] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
The influence of gastrointestinal digestion on the immunological properties of three different nonspecific lipid-transfer proteins (nsLTPs) described in tomato fruit has been assessed using an in vitro system mimicking the stomach and intestine digestion conditions. Tomato peel/pulp nsLTP, Sola l 3, was degraded after digestion, although the immunoglobulin E (IgE) recognition of intact protein and a 10 kDa band were still observed after 30 min of duodenal digestion in the presence of phosphatidylcholine. The tomato seed nsLTP, Sola l 7, showed a higher stability than the other seed allergen, Sola l 6, during digestion. Sola l 7 showed an IgE immunoreactive 6.5 kDa band in immunoblotting analysis, retaining up to 7% of its IgE-binding capacity in inhibition ELISA test after 60 min of duodenal digestion and keeping intact its ability to activate basophils after digestion. These results suggest that the tomato seed allergen Sola l 7 might be considered as an important allergen in the induction of allergic responses to tomato due to its high stability against gastrointestinal digestion.
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Affiliation(s)
- Laura Martín-Pedraza
- Department
of Biochemistry and Molecular Biology, Universidad
Complutense de Madrid, 28040 Madrid, Spain
| | - Cristobalina Mayorga
- Allergy
Research Laboratory, IBIMA, Regional University
Hospital of Málaga, UMA, 29009 Málaga, Spain
| | - Francisca Gomez
- Allergy
Research Laboratory, IBIMA, Regional University
Hospital of Málaga, UMA, 29009 Málaga, Spain
| | - Cristina Bueno-Díaz
- Department
of Biochemistry and Molecular Biology, Universidad
Complutense de Madrid, 28040 Madrid, Spain
| | | | - Miguel González
- Allergy
Research Laboratory, IBIMA, Regional University
Hospital of Málaga, UMA, 29009 Málaga, Spain
| | - Mónica Martínez-Blanco
- Instituto
de Investigación en Ciencias de la Alimentación (CIAL,
CSIC-UAM), Nicolás Cabrera 9, 28049 Madrid, Spain
| | | | - Elena Molina
- Instituto
de Investigación en Ciencias de la Alimentación (CIAL,
CSIC-UAM), Nicolás Cabrera 9, 28049 Madrid, Spain
| | - Mayte Villalba
- Department
of Biochemistry and Molecular Biology, Universidad
Complutense de Madrid, 28040 Madrid, Spain
| | - Sara Benedé
- Instituto
de Investigación en Ciencias de la Alimentación (CIAL,
CSIC-UAM), Nicolás Cabrera 9, 28049 Madrid, Spain
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10
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Structural Characterization of Act c 10.0101 and Pun g 1.0101-Allergens from the Non-Specific Lipid Transfer Protein Family. Molecules 2021; 26:molecules26020256. [PMID: 33419110 PMCID: PMC7825401 DOI: 10.3390/molecules26020256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/19/2020] [Accepted: 01/01/2021] [Indexed: 12/19/2022] Open
Abstract
(1) Background: Non-specific lipid transfer proteins (nsLTPs), which belong to the prolamin superfamily, are potent allergens. While the biological role of LTPs is still not well understood, it is known that these proteins bind lipids. Allergen nsLTPs are characterized by significant stability and resistance to digestion. (2) Methods: nsLTPs from gold kiwifruit (Act c 10.0101) and pomegranate (Pun g 1.0101) were isolated from their natural sources and structurally characterized using X-ray crystallography (3) Results: Both proteins crystallized and their crystal structures were determined. The proteins have a very similar overall fold with characteristic compact, mainly α-helical structures. The C-terminal sequence of Act c 10.0101 was updated based on our structural and mass spectrometry analysis. Information on proteins’ sequences and structures was used to estimate the risk of cross-reactive reactions between Act c 10.0101 or Pun g 1.0101 and other allergens from this family of proteins. (4) Conclusions: Structural studies indicate a conformational flexibility of allergens from the nsLTP family and suggest that immunoglobulin E binding to some surface regions of these allergens may depend on ligand binding. Both Act c 10.0101 and Pun g 1.0101 are likely to be involved in cross-reactive reactions involving other proteins from the nsLTP family.
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11
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Victorio-Puche L, Somoza ML, Martin-Pedraza L, Fernandez-Caldas E, Abel Fernandez E, Moran M, Subiza JL, Lopez-Sanchez JD, Villalba M, Blanca M. Prunus persica 9, a new occupational allergen from peach tree pollen involved in rhinitis and asthma. Occup Environ Med 2020; 78:142-144. [PMID: 33067336 DOI: 10.1136/oemed-2020-106641] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 09/08/2020] [Accepted: 09/09/2020] [Indexed: 11/03/2022]
Abstract
OBJECTIVES Several studies have described peach tree (PT) as an occupational allergen. The aim of this work was to assess the effect of Prunus persica 9 (Pru p 9), a recently identified allergen from PT pollen, in exposed workers. METHODS The study included people who reported respiratory symptoms after handling PT in orchards during the flowering period (Blanca village, Murcia region, south-east Spain). After completing a detailed questionnaire, participants underwent skin prick test (SPT) and nasal provocation test (NPT). The IgE response was analysed by SDS-PAGE and immunoblotting assays. RESULTS A total of 21 cases were included (mean age 45 years; 57% women). Most were polysensitised to common pollens, although one person was sensitised only to PT pollen. All cases had a positive SPT to this pollen, and 43% also to Pru p 9. All participants reported having rhinitis, and six participants reported having also asthma. Immunoblotting showed a heterogeneous IgE pattern for several proteins, with Pru p 9 recognised in nine cases. Most participants sensitised to PT pollen and Pru p 9 had positive NPTs, while those who were not sensitised to Pru p 9 tested negative. CONCLUSIONS We demonstrate for the first time that Pru p 9, an allergen from PT pollen, can induce respiratory symptoms following occupational exposure. This must be considered a relevant allergen when people working with PT cultivars develop respiratory symptoms.
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Affiliation(s)
- Laura Victorio-Puche
- Allergy Department, Hospital General Universitario Morales Meseguer, Murcia, Spain
| | - Maria Luisa Somoza
- Allergy Department, Hospital Universitario Infanta Leonor, Madrid, Spain
| | - Laura Martin-Pedraza
- Allergy Department, Fundación para la Investigación e Innovación Biomédica (FIIB) de los hospitales universitarios Infanta Leonor y Sureste, Madrid, Spain
| | - Enrique Fernandez-Caldas
- R&D Department, Inmunotek Laboratories, Madrid, Spain.,Division of Allergy and Immunology, University of South Florida College of Medicine, Tampa, Florida, USA
| | | | - Mirian Moran
- R&D Department, Inmunotek Laboratories, Madrid, Spain
| | | | | | - Mayte Villalba
- Departamento de Bioquímica y Biología Molecular, Universidad Complutense de Madrid Facultad de Ciencias Químicas, Madrid, Comunidad de Madrid, Spain
| | - Miguel Blanca
- Allergy Department, Hospital Universitario Infanta Leonor, Madrid, Spain
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12
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Li N, Wu X, Zhuang W, Xia L, Chen Y, Wu C, Rao Z, Du L, Zhao R, Yi M, Wan Q, Zhou Y. Tomato and lycopene and multiple health outcomes: Umbrella review. Food Chem 2020; 343:128396. [PMID: 33131949 DOI: 10.1016/j.foodchem.2020.128396] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/27/2020] [Accepted: 10/11/2020] [Indexed: 02/08/2023]
Abstract
Lycopene is a potent lipophilic antioxidant in tomato. We aim to clarify the evidence for associations between tomato and lycopene and multiple health outcomes. Umbrella review of meta-analyses and systematic reviews was performed in humans. A total of 174 articles were searched, 17 articles with 20 health outcomes were identified by eligibility criteria. Tomato intake was inversely associated with all-cause mortality, coronary heart disease mortality, cerebrovascular disease mortality, prostate cancer, and gastric cancer. Dietary lycopene intake or serum lycopene was inversely associated with all-cause mortality, prostate cancer, stroke, cardiovascular disease, metabolic syndrome, and male infertility. Caution was warranted for potential allergy and pollution. The quality of the vast majority of evidence by GRADE was low or very low with the remaining six as moderate. The intake of tomato or lycopene was generally safe and beneficial for multiple health outcomes in humans. But the quality of the evidence was not high.
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Affiliation(s)
- Ni Li
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xiaoting Wu
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Wen Zhuang
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Lin Xia
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yi Chen
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Chuncheng Wu
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Zhiyong Rao
- Department of Clinical Nutrition, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Liang Du
- Chinese Evidence-based Medicine/Cochrane Center, Chengdu 610041, China
| | - Rui Zhao
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Mengshi Yi
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Qianyi Wan
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yong Zhou
- Department of Gastrointestinal Surgery, West China Hospital, Sichuan University, Chengdu 610041, China.
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13
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Martín-Pedraza L, Wangorsch A, Bueno-Diaz C, de Las Heras M, Scheurer S, Cuesta-Herranz J, Villalba M. 2S albumins and nsLTP are involved in anaphylaxis to pizza sauce: IgE recognition before and after allergen processing. Food Chem 2020; 321:126679. [PMID: 32247887 DOI: 10.1016/j.foodchem.2020.126679] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 03/11/2020] [Accepted: 03/21/2020] [Indexed: 11/25/2022]
Abstract
Although pizza is one of the most popular foods in the world, allergic responses after ingesting pizza are relatively uncommon. However, precisely identifying the allergens responsible for these allergic reactions is challenging because of the high and diverse number of ingredients used in pizza preparation. In this report, we aim to identify the allergens responsible for systemic allergic reactions following ingestion of pizza in two patients. Using a skin prick by prick test (SPPT) and in vitro techniques, with natural and recombinant purified allergens from tomato and mustard seeds, we identified 2S albumin and non-specific lipid transfer proteins (nsLTP) as the proteins involved. However, IgE responses to the four nsLTPs differed before and after denaturation and reduction, thus suggesting additional complexity around nsLTP in food processing.
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Affiliation(s)
- Laura Martín-Pedraza
- Department of Biochemistry and Molecular Biology I, Universidad Complutense de Madrid, Madrid, Spain
| | | | - Cristina Bueno-Diaz
- Department of Biochemistry and Molecular Biology I, Universidad Complutense de Madrid, Madrid, Spain
| | | | | | | | - Mayte Villalba
- Department of Biochemistry and Molecular Biology I, Universidad Complutense de Madrid, Madrid, Spain.
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14
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Pru p 9, a new allergen eliciting respiratory symptoms in subjects sensitized to peach tree pollen. PLoS One 2020; 15:e0230010. [PMID: 32191737 PMCID: PMC7082028 DOI: 10.1371/journal.pone.0230010] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Accepted: 02/19/2020] [Indexed: 11/26/2022] Open
Abstract
Peach tree (PT) pollen sensitization is highly prevalent in subjects living in areas where this tree is widely cultivated. None of the allergens responsible for these sensitizations have been identified so far. Our aim was to identify the most relevant PT pollen allergens and analyze their capacity for inducing respiratory symptoms. We studied sixty-two individuals sensitized to PT pollen who developed symptoms after its exposure. The IgE binding profile on peach pollen extract by means of immunoblotting using sera from these subjects was analyzed. Protein extract was fractionated by anion-exchange chromatography and HPLC, fractions run in SDS-PAGE and proteins were identified from IgE-binding bands by mass spectrometry. Several allergenic proteins in the PT pollen extract were recognized by patients’ IgE: a glucan endo-1,3-beta-glucosidase-like, a polygalacturonase, an UTP-glucose-1-phosphate uridylyltransferase and a PR-1a protein. This PR-1a protein is a novel allergen frequently recognized with a molecular mass of 18 kDa, named as Pru p 9 following the WHO-IUIS nomenclature. Skin Prick Test (SPT) performed with this allergen was positive in 41% of the PT pollen-sensitized clinical cases. Most of them had rhinitis or rhinoconjunctivitis, but a significant percentage experienced asthma with seasonal symptoms during the period of PT flowering. Nasal Provocation test (NPT) with Pru p 9 was positive in all cases with positive SPT to this new allergen eliciting nasal symptoms similar to those challenged with PT pollen. We demonstrate that PT pollen can induce sensitization and allergy in an exposed population, being Pru p 9 a relevant allergen responsible of respiratory symptoms. Considering the extensive peach worldwide production with a large number of people involved, our results add a great value for the diagnosis and management of subjects allergic to this pollen.
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15
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An M, Tong Z, Ding C, Wang Z, Sun H, Xia Z, Qi M, Wu Y, Liang Y. Molecular Characterization of the Thaumatin-like Protein PR-NP24 in Tomato Fruits. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:13001-13009. [PMID: 31702910 DOI: 10.1021/acs.jafc.9b05256] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Pathogenesis-related proteins play significant roles in plant responses to pathogen infection and environmental stresses. PR-5 proteins are thaumatin-like proteins (TLPs) and can improve plant resistance to diseases. In this study, a protein named PR-NP24 belonging to the PR-5 family was found to be specifically expressed in tomato exocarp. Subsequently, PR-NP24 and orthologous TLPs were identified in partial Solanaceae species. The differential expression patterns of the PR-NP24 protein in the exocarp of tomato were further analyzed, which resulted in a better understanding of PR-NP24 regulation in plant responses to abiotic and biotic stresses. Accumulation of PR-NP24 induced by salt (NaCl) treatment could promote plant resistance against invasive fungal pathogens. This study concluded that the regulation of PR-NP24 in tomato exocarp could possibly be applied to improve the harvest management of tomato fruits as well as be of practical significance to control the allergenic potentials of the fruits of other plants.
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16
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Direct PCR-free electrochemical biosensing of plant-food derived nucleic acids in genomic DNA extracts. Application to the determination of the key allergen Sola l 7 in tomato seeds. Biosens Bioelectron 2019; 137:171-177. [DOI: 10.1016/j.bios.2019.05.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 05/02/2019] [Accepted: 05/04/2019] [Indexed: 12/14/2022]
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17
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Li G, Hou M, Liu Y, Pei Y, Ye M, Zhou Y, Huang C, Zhao Y, Ma H. Genome-wide identification, characterization and expression analysis of the non-specific lipid transfer proteins in potato. BMC Genomics 2019; 20:375. [PMID: 31088347 PMCID: PMC6518685 DOI: 10.1186/s12864-019-5698-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 04/15/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Plant non-specific lipid transfer proteins (nsLTPs) are small, basic proteins that are abundant in higher plants. They have been reported to play an important role in various plant physiological processes, such as lipid transfer, signal transduction, and pathogen defense. To date, a comprehensive analysis of the potato nsLTP gene family is still lacking after the completion of potato (Solanum tuberosum L.) genome sequencing. A genome-wide characterization, classification and expression analysis of the StnsLTP gene family was performed in this study. RESULTS In this study, a total of 83 nsLTP genes were identified and categorized into eight types based on Boutrot's method. Multiple characteristics of these genes, including phylogeny, gene structures, conserved motifs, protein domains, chromosome locations, and cis-elements in the promoter sequences, were analyzed. The chromosome distribution and the collinearity analyses suggested that the expansion of the StnsLTP gene family was greatly enhanced by the tandem duplications. Ka/Ks analysis showed that 47 pairs of duplicated genes tended to undergo purifying selection during evolution. Moreover, the expression of StnsLTP genes in various tissues was analyzed by using RNA-seq data and verified by quantitative real-time PCR, revealing that the StnsLTP genes were mainly expressed in younger tissues. These results indicated that StnsLTPs may played significant and functionally varied roles in the development of different tissues. CONCLUSION In this study, we comprehensively analyzed nsLTPs in potato, providing valuable information to better understand the functions of StnsLTPs in different tissues and pathways, especially in response to abiotic stress.
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Affiliation(s)
- Guojun Li
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Menglu Hou
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yaxue Liu
- Innovation Experimental College, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yue Pei
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Minghui Ye
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yao Zhou
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Chenxi Huang
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Yaqi Zhao
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China
| | - Haoli Ma
- College of Agronomy, Northwest A&F University, Yangling, 712100, Shaanxi, China.
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18
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Klingebiel C, Chantran Y, Arif‐Lusson R, Ehrenberg AE, Östling J, Poisson A, Liabeuf V, Agabriel C, Birnbaum J, Porri F, Sarrat A, Apoil P, Vivinus M, Garnier L, Chiriac AM, Caimmi D, Bourrain J, Demoly P, Guez S, Boralevi F, Lovato B, Palussière C, Leroy S, Bourrier T, Giovannini‐Chami L, Gouitaa M, Aferiat‐Derome A, Charpin D, Sofalvi T, Cabon‐Boudard I, Massabie‐Bouchat Y, Hofmann B, Bonardel N, Dron‐Gonzalvez M, Sterling B, Carsin A, Vivinus S, Poitevin B, Nicolau L, Liautard G, Soler C, Mezouar S, Annesi‐Maesano I, Mège J, Lidholm J, Vitte J. Pru p 7 sensitization is a predominant cause of severe, cypress pollen‐associated peach allergy. Clin Exp Allergy 2019; 49:526-536. [DOI: 10.1111/cea.13345] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 11/11/2018] [Accepted: 12/12/2018] [Indexed: 12/21/2022]
Affiliation(s)
| | - Yannick Chantran
- UPMC Univ Paris 06 INSERM UMRS 938 Centre de Recherche Saint‐Antoine, team “Immune System, Neuroinflammation and Neurodegenerative Diseases” Hôpital Saint‐Antoine Sorbonne Universités Paris France
- Immunology Department AP‐HP Saint‐Antoine Hospital Paris France
| | - Rihane Arif‐Lusson
- Aix‐Marseille Univ IRD APHM MEPHI IHU Méditerranée Infection Marseille France
| | | | | | - Alain Poisson
- Service de Pneumo‐Allergologie Hôpital Saint Joseph Marseille France
| | - Valérie Liabeuf
- Aix‐Marseille Univ APHM, Hôpital Timone Service de Dermatologie‐Vénéréologie Marseille France
| | - Chantal Agabriel
- Aix‐Marseille Univ APHM, Hôpital Timone Service de Pédiatrie Multidisciplinaire Marseille France
| | - Joëlle Birnbaum
- Service de Pneumologie et Allergologie CH du Pays d'Aix Aix‐en‐Provence France
| | - Françoise Porri
- Service de Pneumo‐Allergologie Hôpital Saint Joseph Marseille France
| | - Anne Sarrat
- Laboratoire d'Immunologie et Immunogénétique GH Pellegrin CHU Bordeaux Bordeaux France
| | - Pol‐André Apoil
- Institut Fédératif de Biologie Hôpital Purpan, CHU Toulouse Toulouse France
| | - Mylène Vivinus
- Laboratoire d'Immunologie Hôpital de l'Archet CHU Nice Nice France
| | - Lorna Garnier
- Laboratoire d'Immunologie CH Lyon Sud CHU Lyon Pierre‐Bénite France
| | - Anca Mirela Chiriac
- Département de pneumologie et addictologie CHU Montpellier Hôpital Arnaud‐de‐Villeneuve Univ Montpellier Montpellier France
- Sorbonne Universités INSERM UMRS 1136 IPLESP, team EPAR Paris France
| | - Davide‐Paolo Caimmi
- Département de pneumologie et addictologie CHU Montpellier Hôpital Arnaud‐de‐Villeneuve Univ Montpellier Montpellier France
- Sorbonne Universités INSERM UMRS 1136 IPLESP, team EPAR Paris France
| | - Jean‐Luc Bourrain
- Département de pneumologie et addictologie CHU Montpellier Hôpital Arnaud‐de‐Villeneuve Univ Montpellier Montpellier France
| | - Pascal Demoly
- Département de pneumologie et addictologie CHU Montpellier Hôpital Arnaud‐de‐Villeneuve Univ Montpellier Montpellier France
- Sorbonne Universités INSERM UMRS 1136 IPLESP, team EPAR Paris France
| | - Stéphane Guez
- Unité d'allergologie, GH Pellegrin, CHU Bordeaux Bordeaux France
| | - Franck Boralevi
- Unité de Dermatologie Pédiatrique Hôpital Pellegrin‐Enfants, CHU Bordeaux Bordeaux France
| | | | | | - Sylvie Leroy
- Service de Pneumologie Hôpital Pasteur CHU Nice Nice France
| | | | | | - Marion Gouitaa
- Aix‐Marseille Univ APHM, Hôpital Nord Service de Pneumologie Marseille France
| | | | - Denis Charpin
- Aix‐Marseille Univ APHM, Hôpital Timone Unité de Pneumologie Marseille France
| | - Tünde Sofalvi
- Aix‐Marseille Univ APHM, Hôpital Nord Service de Pneumologie Marseille France
| | - Isabelle Cabon‐Boudard
- Aix‐Marseille Univ APHM, Hôpital Timone Service de Chirurgie Pédiatrique Marseille France
| | | | | | | | | | - Benoît Sterling
- Medical Office Marseille France
- Aix‐Marseille Univ APHM, Hôpital Timone Service de Pneumo‐Pédiatrie Marseille France
| | - Ania Carsin
- Aix‐Marseille Univ APHM, Hôpital Timone Service de Pneumo‐Pédiatrie Marseille France
| | - Serge Vivinus
- Service de Pneumologie Hôpital Pasteur CHU Nice Nice France
| | | | | | | | | | - Soraya Mezouar
- Aix‐Marseille Univ IRD APHM MEPHI IHU Méditerranée Infection Marseille France
| | | | - Jean‐Louis Mège
- Aix‐Marseille Univ IRD APHM MEPHI IHU Méditerranée Infection Marseille France
| | | | - Joana Vitte
- Aix‐Marseille Univ IRD APHM MEPHI IHU Méditerranée Infection Marseille France
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19
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Identification of non-specific Lipid Transfer Protein gene family members in Solanum lycopersicum and insights into the features of Sola l 3 protein. Sci Rep 2019; 9:1607. [PMID: 30733555 PMCID: PMC6367377 DOI: 10.1038/s41598-018-38301-z] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 12/21/2018] [Indexed: 01/11/2023] Open
Abstract
Non-specific lipid transfer proteins (nsLTPs) are characterized by an eight-cysteine motif backbone that is stabilized by four disulphide bonds. The strong interest towards this protein family is mainly due to the fact that nsLTPs are involved in many biological processes and have been identified as major human allergens. Since tomato (Solanum lycopersicum L.) is one of the most consumed and allergenic vegetables, a full characterization of this family is needed. In this study, hidden Markov model profiles were used to identify nsLTPs within the tomato protein complement. Following manual curation, 64 nsLTP genes were classified into six sub-families. Furthermore, nsLTP gene structure, distribution and arrangement along tomato chromosomes were investigated. Available RNA-seq expression profile data and Real-Time PCR analyses were used to derive expression patterns of tomato nsLTPs in different tissues/organs. Non-specific LTP genes with high level of expression in tomato fruits were filtered out since they could play a key role in tomato allergenicity. Among these genes was Solyc10g075090 that encodes the allergen Sola l 3. Finally, cloning, heterologous expression, purification and biochemical characterization of the recombinant protein Sola l 3 was performed.
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20
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Chruszcz M, Kapingidza AB, Dolamore C, Kowal K. A robust method for the estimation and visualization of IgE cross-reactivity likelihood between allergens belonging to the same protein family. PLoS One 2018; 13:e0208276. [PMID: 30496313 PMCID: PMC6264518 DOI: 10.1371/journal.pone.0208276] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 11/14/2018] [Indexed: 12/11/2022] Open
Abstract
Among the vast number of identified protein families, allergens emanate from relatively few families which translates to only a small fraction of identified protein families. In allergy diagnostics and immunotherapy, interactions between immunoglobulin E and allergens are crucial because the formation of an allergen-antibody complex is necessary for triggering an allergic reaction. In allergic diseases, there is a phenomenon known as cross-reactivity. Cross-reactivity describes a situation where an individual has produced antibodies against a particular allergenic protein, but said antibodies fail to discriminate between the original sensitizer and other similar proteins that usually belong to the same family. To expound the concept of cross-reactivity, this study examines ten protein families that include allergens selected specifically for the analysis of cross-reactivity. The selected allergen families had at least 13 representative proteins, overall folds that differ significantly between families, and include relevant allergens with various potencies. The selected allergens were analyzed using information on sequence similarities and identities between members of the families as well as reports on clinically relevant cross-reactivities. Based on our analysis, we propose to introduce a new A-RISC index (Allergens’–Relative Identity, Similarity and Cross-reactivity) which describes homology between two allergens belonging to the same protein family and is used to predict the likelihood of cross-reactivity between them. Information on sequence similarities and identities, as well as on the values of the proposed A-RISC index is used to introduce four categories describing a risk of a cross-reactive reaction, namely: high, medium-high, medium-low and low. The proposed approach can facilitate analysis in component-resolved allergy diagnostics, generation of avoidance guidelines for allergic individuals, and help with the design of immunotherapy.
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Affiliation(s)
- Maksymilian Chruszcz
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, United States of America
- * E-mail:
| | - A. Brenda Kapingidza
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, United States of America
| | - Coleman Dolamore
- Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina, United States of America
| | - Krzysztof Kowal
- Department of Allergology and Internal Medicine, Medical University of Bialystok, Bialystok, Poland
- Department of Experimental Allergology and Immunology, Medical University of Bialystok, Bialystok, Poland
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21
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Kurze E, Lo Scalzo R, Campanelli G, Schwab W. Effect of tomato variety, cultivation, climate and processing on Sola l 4, an allergen from Solanum lycopersicum. PLoS One 2018; 13:e0197971. [PMID: 29902173 PMCID: PMC6002116 DOI: 10.1371/journal.pone.0197971] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Accepted: 05/13/2018] [Indexed: 01/29/2023] Open
Abstract
Tomatoes (Solanum lycopersicum) are one of the most consumed vegetables worldwide. However, tomato allergies in patients suffering from birch pollen allergy occur frequently. Due to highly similar protein structures of the tomato allergen Sola l 4 and the major birch pollen allergen Bet v 1, patients cross-react with allergenic proteins from tomato as well as other fruits or vegetables. The aim of this study was to quantify Sola l 4 in various tomatoes differing in color, size and shape for identification of varieties with a reduced allergen level. Therefore, an indirect competitive ELISA using a specific polyclonal Sola l 4 antibody was developed. In addition, two varieties, both cultivated either conventionally or organically and furthermore dried with different methods, were analyzed to investigate the influence of the cultivation method and processing techniques on Sola l 4 level. Within 23 varieties, Sola l 4 content varied significantly between 0.24 and 1.71 μg Sola l 4/g FW. The tomato cultivars Rugantino and Rhianna showed the significantly lowest level, whereas in cultivars Farbini and Bambello the significantly highest concentration was determined. Drying of tomatoes in the oven and by sun resulted in a significant decrease. The thermal instability was verified for the recombinant Sola l 4 emphasizing the results for the native protein in dried tomato samples. Overall, the Sola l 4 content is cultivar-dependent and no correlation between color and Sola l 4 amount was found. During the drying process of tomatoes Sola l 4 level was significantly reduced due to thermal instability. Growing conditions have a minor effect whereas seasonal effects show a more pronounced impact. These findings could extend the knowledge about the allergen level of different tomato varieties and may help to improve food safety to potentially increase the life quality of patients suffering from birch pollen allergy.
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Affiliation(s)
- Elisabeth Kurze
- Biotechnology of Natural Products, Technische Universität München, Freising, Germany
| | - Roberto Lo Scalzo
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria, Unità di ricerca per i processi dell’industria agroalimentare (CREA-IT), Milan, Italy
| | - Gabriele Campanelli
- Consiglio per la ricerca in agricoltura e l’analisi dell’economia agraria, Unità di ricerca per i processi dell’industria agroalimentare (CREA-IT), Milan, Italy
| | - Wilfried Schwab
- Biotechnology of Natural Products, Technische Universität München, Freising, Germany
- * E-mail:
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22
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Xu Y, Zheng X, Song Y, Zhu L, Yu Z, Gan L, Zhou S, Liu H, Wen F, Zhu C. NtLTP4, a lipid transfer protein that enhances salt and drought stresses tolerance in Nicotiana tabacum. Sci Rep 2018; 8:8873. [PMID: 29891874 PMCID: PMC5995848 DOI: 10.1038/s41598-018-27274-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2017] [Accepted: 05/25/2018] [Indexed: 11/08/2022] Open
Abstract
Lipid transfer proteins (LTPs), a class of small, ubiquitous proteins, play critical roles in various environmental stresses. However, their precise biological functions remain unknown. Here we isolated an extracellular matrix-localised LTP, NtLTP4, from Nicotiana tabacum. The overexpression of NtLTP4 in N. tabacum enhanced resistance to salt and drought stresses. Upon exposure to high salinity, NtLTP4-overexpressing lines (OE lines) accumulated low Na+ levels. Salt-responsive genes, including Na+/H+ exchangers (NHX1) and high-affinity K+ transporter1 (HKT1), were dramatically higher in OE lines than in wild-type lines. NtLTP4 might regulate transcription levels of NHX1 and HKT1 to alleviate the toxicity of Na+. Interestingly, OE lines enhanced the tolerance of N. tabacum to drought stress by reducing the transpiration rate. Moreover, NtLTP4 could increase reactive oxygen species (ROS)-scavenging enzyme activity and expression levels to scavenge excess ROS under drought and high salinity conditions. We used a two-hybrid yeast system and screened seven putative proteins that interact with NtLTP4 in tobacco. An MAPK member, wound-induced protein kinase, was confirmed to interact with NtLTP4 via co-immunoprecipitation and a firefly luciferase complementation imaging assay. Taken together, this is the first functional analysis of NtLTP4, and proves that NtLTP4 positively regulates salt and drought stresses in N. tabacum.
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Affiliation(s)
- Yang Xu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Xinxin Zheng
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Yunzhi Song
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Lifei Zhu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Zipeng Yu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Liming Gan
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Shumei Zhou
- State Key Laboratory of Crop Biology, College of Agronomy, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Hongmei Liu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Fujiang Wen
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China
| | - Changxiang Zhu
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, P. R. China.
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When nutrition and allergy collide: the rise of anaphylaxis to plant foods. Curr Opin Allergy Clin Immunol 2018; 17:338-343. [PMID: 28858913 DOI: 10.1097/aci.0000000000000387] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
PURPOSE OF REVIEW Interest in nutrition is increasing, but in the world of internet health gurus, whilst the nutritional benefits of fruits and vegetables are extolled, wheat is often vilified. This review will assess the positive nutritional effects of plant foods in relation to allergy prevention, the effectiveness of gluten-avoidance and the likelihood of anaphylaxis to fruits and vegetables. RECENT FINDINGS Although the numbers of people who report gluten sensitivity is rising, hard evidence of mass sensitivity to gluten is scant. Also, the avoidance of wheat containing foods could lead to nutritional imbalance and effects on the gut microbiome. The evidence that fruits and vegetables have a protective effect on the development of allergy is inconsistent, although fruit juices may promote beneficial changes to gut microflora. Fruits and vegetables can cause severe allergic reactions, especially due to the presence of lipid transfer proteins, but this is not just a Mediterranean phenomenon, and not limited to peaches. SUMMARY These findings emphasise the importance of a keeping an open mind about reported reactions to plant foods, to ensure the correct diagnosis is made and nutrition is optimised to prevent any adverse effects of avoidance on the gut microbiome.
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Pérez-Calderón R, Gonzalo-Garijo MÁ, Rodríguez-Velasco FJ, Sánchez-Vega S, Bartolomé-Zavala B. Occupational respiratory allergy in peach crop workers. Allergy 2017; 72:1556-1564. [PMID: 28317175 DOI: 10.1111/all.13163] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/12/2017] [Indexed: 02/05/2023]
Abstract
BACKGROUND Occupational respiratory diseases in workers of peach tree crops have been reported punctually and have been associated with sensitization to proteins present in both pollen and leaf tree. We report the study of 37 workers with respiratory symptoms related to occupational exposure to peach trees. METHODS Prick tests and specific IgE determinations were performed with extracts from leaves and branches of peach tree. Immunodetection in leaf extract was realized by sodium dodecyl sulfate-polyacrylamide gel electrophoresis SDS-PAGE-immunoblotting with patient sera and rabbit serum anti-Pru p 3. Immunodetection inhibition was performed with rPru p 3 and pollen profilins. The clinical relevance of sensitization was demonstrated by specific bronchial challenge test (SBCT) with peach leaf extract. RESULTS Most patients suffered symptoms when peach trees had leaves, specifically during thinning and harvesting fruit (rhinoconjunctivitis: 100% and asthma: 67.5%). Sensitization to leaf extract was demonstrated in 86% of patients. IgE-immunoblotting with peach leaf extract revealed in six patient sera a pair of bands of 10 and 16 kDa, and in nine a 16-kDa band. Those bands could be two isoforms of peach leaf lipid transfer proteins( LTP), so the recognition frequency of some LTP isoform by our patient sera was 42%. 33% of the sera recognized a doubled band of about 14.5 kDa and this recognition was inhibited by nPho d 2. The SBCT with peach leaf extract was positive in the asthmatic sensitized patients tested. CONCLUSIONS Sensitization to peach leaves was the cause of occupational respiratory symptoms in our patients. Some patient sera revealed IgE-binding proteins matching LTP and/or profilin.
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Affiliation(s)
- R. Pérez-Calderón
- Allergology Department; Infanta Cristina University Hospital; Badajoz Spain
| | | | | | - S. Sánchez-Vega
- Allergology Department; Infanta Cristina University Hospital; Badajoz Spain
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Del Moral MG, Martínez-Naves E. The Role of Lipids in Development of Allergic Responses. Immune Netw 2017; 17:133-143. [PMID: 28680374 PMCID: PMC5484643 DOI: 10.4110/in.2017.17.3.133] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 03/15/2017] [Accepted: 03/16/2017] [Indexed: 01/22/2023] Open
Abstract
Most allergic diseases are caused by activation of Th2 type immune responses resulting in the production of specific IgE against proteins found in normally harmless substances such as pollen, mites, epithelia or food. Allergenic substances are composed, in addition to proteins, of other compounds such as carbohydrates and lipids. Those lipids are able to promote the development of Th2-type responses associated with allergy. There are lipids found in pollen, milk or insect venom that are specifically recognized by CD1 restricted unconventional T lymphocytes, which can promote allergic reactions. Furthermore, a large number of allergens are proteins containing hydrophobic parts that specifically bind lipids that are capable to favor allergenic immune responses. Also, lipids associated to substances like pollen, dander, epithelia or the bacteria can act on cells of the innate system, including dendritic cells, which in turn lead to the differentiation of Th2-type clones. Finally, lipids may also influence the ability of allergens to be exposed to the immune system within the oral, respiratory or intestinal mucosa where allergic response occurs with great frequency.
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Affiliation(s)
- Manuel Gómez Del Moral
- Department of Cell Biology, Complutense University School of Medicine, Madrid 28040, Spain
| | - Eduardo Martínez-Naves
- Department of Microbiology and Immunology, Complutense University School of Medicine, Madrid 28040, Spain
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