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Shui T, Fu Y, Duan Y, Sun F, Yang H, Huang P, Xi J. Localization of G1A1a Allergenic Domain Destroyed by Thermal Processing. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:9947-9954. [PMID: 38647139 DOI: 10.1021/acs.jafc.3c09912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Glycinin is an important allergenic protein. A1a is the acidic chain of the G1 subunit in glycinin (G1A1a), and it has strong allergenicity. In this study, we used phage display technology to express the protein of G1A1a and its overlapping fragments and an indirect enzyme-linked immunosorbent assay (iELISA) to determine the antigenicity and allergenicity of the expressed protein. After three rounds of screening, it was determined that fragment A1a-2-B-I (151SLENQLDQMPRRFYLAGNQEQEFLKYQQEQG181) is the allergenic domain of G1A1a destroyed by thermal processing. In addition, three overlapping peptides were synthesized from fragments A1a-2-B-I, and a linear epitope was found in this domain through methods including dot blot and iELISA. Peptide 2 (157DQMPRRFYLANGNQE170) showed allergenicity, and after replacing it with alanine, it was found that amino acids D157, Q158, M159, and Y164 were the key amino acids that affected its antigenicity, while Q158, M159, R162, and N168 affected allergenicity.
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Affiliation(s)
- Tianjiao Shui
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Yang Fu
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Yuying Duan
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Fuyu Sun
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Huanhuan Yang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Pengbo Huang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Jun Xi
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
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Li Y, Gao Y, Wang Y, Duan Y, Fu Y, Yang H, Xi J. Localization of an IgE epitope of glycinin A2 peptide chain. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:3697-3704. [PMID: 38160247 DOI: 10.1002/jsfa.13254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 12/04/2023] [Accepted: 12/11/2023] [Indexed: 01/03/2024]
Abstract
INTRODUCTION One of the main allergens in soybeans is glycinin, which seriously impacts the normal lives of allergic people. Previous studies have confirmed that thermal processing and thermal processing combined with ultrahigh-pressure processing could significantly reduce the antigenicity of glycinin. The dominant antigen region of acidic peptide chain A2 of G2 subunit was located by phage display experiment. METHODS In this paper, overlapping peptides and alanine substitution techniques were used to explore the key amino acids that significantly affect the antigenicity of A2 peptide chain. The purity of peptide 1, peptide 2 and peptide 3 was identified by mass spectrometry and high-performance liquid chromatography, and the results showed that the purity of the synthesized overlapping peptide was more than 90%. SDS-PAGE showed that the peptide was successfully coupled with bovine serum albumin. The antigenicity of the coupling peptide was tested by ELISA and Dot-Blot, and the allergenicity was detected by reacting with the serum of patients with soybean globulin allergy. CONCLUSION The results showed that peptide 3 has stronger antigenicity and sensitization. Alanine substitution technology allowed one to perform site-directed mutagenesis on peptide 3. Dot-Blot and ELISA tests showed that D259, E260, E261, Q263 and C266 may be the key amino acids that significantly affect the antigenicity of peptide 3. The research presented is of great significance for correctly guiding the production of safe food and preventing the occurrence of food allergic diseases. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Yingying Li
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Yida Gao
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Yichao Wang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Yuying Duan
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Yang Fu
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Huanhuan Yang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Jun Xi
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
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Huang P, Yang S, Chen Z, Shang A, Liu D, Xi J. A SERS-based immune-nanoprobe for ultrasensitive detection of glycinin via a lateral flow assay. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2024; 305:123439. [PMID: 37774588 DOI: 10.1016/j.saa.2023.123439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Revised: 09/13/2023] [Accepted: 09/18/2023] [Indexed: 10/01/2023]
Abstract
Glycinin is one of the most nutritious ingredients in soybean, but it is also an allergen that can cause allergic reactions in humans and animals, and even endanger life in severe cases. Therefore, it is imperative to develop a rapid and ultrasensitive detection method for glycinin. In order to achieve this goal, this experiment combined surface-enhanced Raman spectroscopy (SERS) technology with an economical, simple, fast and easy-to-carry immunochromatographic test strip, and successfully constructed an efficient sandwich immunochromatographic test strip. The immunoprobe of the test strip was covalently coupled by gold nanostars (AuNSs), Raman molecule 4-aminothiophenol (4-PATP) and rabbit polyclonal antibody. In this experiment, a gold nanostar immunochromatographic test strip for detecting glycinin was established. The detection limit of the test strip was 0.23 ng / mL, the recovery rate was 91.5-96.6 %, and the coefficient of variation was 1.61-6.15 %. In addition, the test strip had no cross reaction with whey protein, wheat protein, peanut protein, sesame protein and β-conglycinin, indicating that the detection method had good specificity and the ability to avoid false positive results. Hence, this experiment successfully prepared a rapid and sensitive test strip for glycinin.
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Affiliation(s)
- Pengbo Huang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Shuo Yang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Zixin Chen
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Achen Shang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Deguo Liu
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China
| | - Jun Xi
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou 450001, Henan, China.
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Merkher Y, Kontareva E, Alexandrova A, Javaraiah R, Pustovalova M, Leonov S. Anti-Cancer Properties of Flaxseed Proteome. Proteomes 2023; 11:37. [PMID: 37987317 PMCID: PMC10661269 DOI: 10.3390/proteomes11040037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/06/2023] [Accepted: 11/10/2023] [Indexed: 11/22/2023] Open
Abstract
Flaxseed has been recognized as a valuable source of nutrients and bioactive compounds, including proteins that possess various health benefits. In recent years, studies have shown that flaxseed proteins, including albumins, globulins, glutelin, and prolamins, possess anti-cancer properties. These properties are attributed to their ability to inhibit cancer cell proliferation, induce apoptosis, and interfere with cancer cell signaling pathways, ultimately leading to the inhibition of metastasis. Moreover, flaxseed proteins have been reported to modulate cancer cell mechanobiology, leading to changes in cell behavior and reduced cancer cell migration and invasion. This review provides an overview of the anti-cancer properties of flaxseed proteins, with a focus on their potential use in cancer treatment. Additionally, it highlights the need for further research to fully establish the potential of flaxseed proteins in cancer therapy.
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Affiliation(s)
- Yulia Merkher
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudny 141700, Moscow Region, Russia (S.L.)
- Faculty of Biomedical Engineering, Technion–Israel Institute of Technology, Haifa 3200003, Israel
| | - Elizaveta Kontareva
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudny 141700, Moscow Region, Russia (S.L.)
| | - Anastasia Alexandrova
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudny 141700, Moscow Region, Russia (S.L.)
| | - Rajesha Javaraiah
- Department of Biochemistry, Yuvaraja’s College, University of Mysore Mysuru, Karnataka 570005, India
| | - Margarita Pustovalova
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudny 141700, Moscow Region, Russia (S.L.)
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow 123098, Russia
| | - Sergey Leonov
- School of Biological and Medical Physics, Moscow Institute of Physics and Technology, Dolgoprudny 141700, Moscow Region, Russia (S.L.)
- State Research Center-Burnasyan Federal Medical Biophysical Center of Federal Medical Biological Agency (SRC-FMBC), Moscow 123098, Russia
- Institute of Cell Biophysics, Russian Academy of Sciences, Pushchino 142290, Moscow Region, Russia
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López-Pedrouso M, Lorenzo JM, Alché JDD, Moreira R, Franco D. Advanced Proteomic and Bioinformatic Tools for Predictive Analysis of Allergens in Novel Foods. BIOLOGY 2023; 12:biology12050714. [PMID: 37237526 DOI: 10.3390/biology12050714] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023]
Abstract
In recent years, novel food is becoming an emerging trend increasingly more demanding in developed countries. Food proteins from vegetables (pulses, legumes, cereals), fungi, bacteria and insects are being researched to introduce them in meat alternatives, beverages, baked products and others. One of the most complex challenges for introducing novel foods on the market is to ensure food safety. New alimentary scenarios drive the detection of novel allergens that need to be identified and quantified with the aim of appropriate labelling. Allergenic reactions are mostly caused by proteins of great abundance in foods, most frequently of small molecular mass, glycosylated, water-soluble and with high stability to proteolysis. The most relevant plant and animal food allergens, such as lipid transfer proteins, profilins, seed storage proteins, lactoglobulins, caseins, tropomyosins and parvalbumins from fruits, vegetables, nuts, milk, eggs, shellfish and fish, have been investigated. New methods for massive screening in search of potential allergens must be developed, particularly concerning protein databases and other online tools. Moreover, several bioinformatic tools based on sequence alignment, motif identification or 3-D structure predictions should be implemented as well. Finally, targeted proteomics will become a powerful technology for the quantification of these hazardous proteins. The ultimate objective is to build an effective and resilient surveillance network with this cutting-edge technology.
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Affiliation(s)
- María López-Pedrouso
- Department of Zoology, Genetics and Physical Anthropology, Universidade de Santiago de Compostela, Santiago de Compostela, 15872 A Coruña, Spain
| | - José M Lorenzo
- Centro Tecnolóxico da Carne de Galicia, Rúa Galicia Nº 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain
| | - Juan de Dios Alché
- Plant Reproductive Biology and Advanced Microscopy Laboratory, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, Spanish National Research Council (CSIC), Profesor Albareda 1, 18008 Granada, Spain
| | - Ramón Moreira
- Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Daniel Franco
- Department of Chemical Engineering, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
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Xi J, Li Y, Cheng H, Wang Y. Identification of allergenic epitopes destroyed by two processing technologies of glycinin A2 from soybean. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:2700-2708. [PMID: 36335553 DOI: 10.1002/jsfa.12320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 09/25/2022] [Accepted: 11/06/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Glycinin is one of the most highly allergenic proteins in soybeans, and G2 is one of the five allergenic subunits of glycinin. Compared with the alkaline chain, the acidic chain A2 of the G2 subunit has strong allergenicity. However, the precise epitopes of A2 and the epitopes destroyed during processing are still unknown. RESULTS In the present study, preparation of two specific antibodies damaged by processing and phage display techniques were applied to locate the antigenic epitopes of glycinin A2 polypeptide chains disrupted by two processing techniques (thermal processing and ultra-high pressure combined thermal processing). Bioinformatics methods were used to predict the possible epitopes of the A2 chain. The A2 chain and its overlapping segments were introduced into T7 phages and expressed on phage shell by phage display. An indirect enzyme-linked immunosorbent assay was used to screen for antigenic epitopes that had been disrupted by the two processing technologies. The results showed that the dominant antigenic region disrupted by processing was located mainly in the A2-3-B fragment. The reacting experiment with the serum of allergic patients showed that the A2-3-B fragment protein was not only an antigenic region, but also an allergenic region. The two processing technologies destroyed the allergenic epitopes of A2 chain, thereby reducing the allergenicity of protein. The amino acids where the dominant allergenic region disrupted by processing was located were: 233 AIVTVKGGLRVTAPAMRKPQQEEDDDDEEEQPQCVE268 . CONCLUSION Precise epitopes of the acidic chain A2 in glycinin were identified and epitopes destroyed in two common processing methods were also obtained. The application products of rapid detection of de-allergenicity effect of processed food can be developed according to the location of processed destruction allergenic region, which is of great significance with respect to preventing the occurrence of soybean allergenic diseases. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Jun Xi
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Yingying Li
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Huibin Cheng
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
| | - Yichao Wang
- College of Food Science and Engineering, Henan University of Technology, Zhengzhou, China
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Kusumah J, Gonzalez de Mejia E. Impact of soybean bioactive compounds as response to diet-induced chronic inflammation: A systematic review. Food Res Int 2022; 162:111928. [DOI: 10.1016/j.foodres.2022.111928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 11/04/2022]
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Blázquez-García M, Arévalo B, Serafín V, Benedé S, Mata L, Galán-Malo P, Segura-Gil I, Pérez MD, Pingarrón JM, Campuzano S. Ultrasensitive detection of soy traces by immunosensing of glycinin and β-conglycinin at disposable electrochemical platforms. Talanta 2022; 241:123226. [DOI: 10.1016/j.talanta.2022.123226] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 12/26/2022]
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9
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Development and Validation of a Specific Sandwich ELISA for Determination of Soybean Allergens and Its Application in Processed Foods. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.03.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Xi J, Li Y. The effects of ultra‐high‐pressure treatments combined with heat treatments on the antigenicity and structure of soy glycinin. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.15297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jun Xi
- College of Food Science and Technology Henan University of Technology Zhengzhou 450001 China
| | - Yingying Li
- College of Food Science and Technology Henan University of Technology Zhengzhou 450001 China
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Taylor SL, Houben GF, Blom W, Westerhout J, Remington BC, Crevel RW, Brooke-Taylor S, Baumert JL. The population threshold for soy as an allergenic food – Why did the Reference Dose decrease in VITAL 3.0? Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.03.036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Xi J, Yao L, Li S. Identification of β-conglycinin α' subunit antigenic epitopes destroyed by thermal treatments. Food Res Int 2021; 139:109806. [DOI: 10.1016/j.foodres.2020.109806] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 10/08/2020] [Accepted: 10/12/2020] [Indexed: 10/23/2022]
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Rehiman SH, Lim SM, Lim FT, Chin AV, Tan MP, Kamaruzzaman SB, Ramasamy K, Abdul Majeed AB. Fibrinogen isoforms as potential blood-based biomarkers of Alzheimer's disease using a proteomics approach. Int J Neurosci 2020; 132:1014-1025. [PMID: 33280461 DOI: 10.1080/00207454.2020.1860038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Objective: Alzheimer's disease (AD), the commonest form of dementia which is characterized by progressive decline in cognitive function, can only be definitively diagnosed after death. Although biomarkers may aid diagnosis, currently available AD biomarkers, which are predominantly based on cerebrospinal fluid and neuroimaging facilities, are either invasive or costly. Blood-based biomarkers for AD diagnosis are highly sought after due to its practicality at the clinic. This study was undertaken to determine the differential protein expression in plasma amongst Malaysian AD, mild cognitive impairment (MCI) and non-AD individuals. Methods: A proteomic approach which utilized two-dimensional differential in gel electrophoresis (2 D DIGE) was performed for blood samples from 15 AD, 14 MCI and 15 non-AD individuals. Results: Mass spectrometry (MS)-based protein identification via MALDI ToF/ToF showed that fibrinogen-β-chain (spot 64) and fibrinogen-γ-chain (spot 91) with differential expression ratio >1.5 were significantly upregulated (p < 0.05) in AD patients when compared to non-AD individuals. Further data analysis using Pearson correlation found that the upregulated fibrinogen-γ-chain was weakly but significantly (p < 0.05) and inversely correlated with cognitive decline. Conclusion: Fibrinogen isoforms may play important roles in the vascular pathology of AD as well as neuroinflammation. As such, fibrinogen appears to be a promising blood-based biomarker for AD. Further validation of the present findings in larger population is now warranted.
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Affiliation(s)
- Siti Hajar Rehiman
- Collaborative Drug Discovery Research (CDDR) and Brain Degeneration and Therapeutics Research Group, Faculty of Pharmacy, University Teknologi MARA (UiTM) Cawangan Selangor, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Siong Meng Lim
- Collaborative Drug Discovery Research (CDDR) and Brain Degeneration and Therapeutics Research Group, Faculty of Pharmacy, University Teknologi MARA (UiTM) Cawangan Selangor, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Fei Tieng Lim
- Collaborative Drug Discovery Research (CDDR) and Brain Degeneration and Therapeutics Research Group, Faculty of Pharmacy, University Teknologi MARA (UiTM) Cawangan Selangor, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Ai-Vyrn Chin
- Division of Geriatric Medicine, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Maw Pin Tan
- Division of Geriatric Medicine, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Shahrul Bahyah Kamaruzzaman
- Division of Geriatric Medicine, Department of Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Kalavathy Ramasamy
- Collaborative Drug Discovery Research (CDDR) and Brain Degeneration and Therapeutics Research Group, Faculty of Pharmacy, University Teknologi MARA (UiTM) Cawangan Selangor, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
| | - Abu Bakar Abdul Majeed
- Collaborative Drug Discovery Research (CDDR) and Brain Degeneration and Therapeutics Research Group, Faculty of Pharmacy, University Teknologi MARA (UiTM) Cawangan Selangor, Bandar Puncak Alam, Selangor Darul Ehsan, Malaysia
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Barre A, Damme EJV, Simplicien M, Benoist H, Rougé P. Are Dietary Lectins Relevant Allergens in Plant Food Allergy? Foods 2020; 9:foods9121724. [PMID: 33255208 PMCID: PMC7760050 DOI: 10.3390/foods9121724] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/18/2020] [Accepted: 11/21/2020] [Indexed: 01/17/2023] Open
Abstract
Lectins or carbohydrate-binding proteins are widely distributed in seeds and vegetative parts of edible plant species. A few lectins from different fruits and vegetables have been identified as potential food allergens, including wheat agglutinin, hevein (Hev b 6.02) from the rubber tree and chitinases containing a hevein domain from different fruits and vegetables. However, other well-known lectins from legumes have been demonstrated to behave as potential food allergens taking into account their ability to specifically bind IgE from allergic patients, trigger the degranulation of sensitized basophils, and to elicit interleukin secretion in sensitized people. These allergens include members from the different families of higher plant lectins, including legume lectins, type II ribosome-inactivating proteins (RIP-II), wheat germ agglutinin (WGA), jacalin-related lectins, GNA (Galanthus nivalis agglutinin)-like lectins, and Nictaba-related lectins. Most of these potentially active lectin allergens belong to the group of seed storage proteins (legume lectins), pathogenesis-related protein family PR-3 comprising hevein and class I, II, IV, V, VI, and VII chitinases containing a hevein domain, and type II ribosome-inactivating proteins containing a ricin B-chain domain (RIP-II). In the present review, we present an exhaustive survey of both the structural organization and structural features responsible for the allergenic potency of lectins, with special reference to lectins from dietary plant species/tissues consumed in Western countries.
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Affiliation(s)
- Annick Barre
- UMR 152 PharmaDev, Institut de Recherche et Développement, Université Paul Sabatier, Faculté de Pharmacie, 35 Chemin des Maraîchers, 31062 Toulouse, France; (A.B.); (M.S.); (H.B.)
| | - Els J.M. Van Damme
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, B-9000 Ghent, Belgium;
| | - Mathias Simplicien
- UMR 152 PharmaDev, Institut de Recherche et Développement, Université Paul Sabatier, Faculté de Pharmacie, 35 Chemin des Maraîchers, 31062 Toulouse, France; (A.B.); (M.S.); (H.B.)
| | - Hervé Benoist
- UMR 152 PharmaDev, Institut de Recherche et Développement, Université Paul Sabatier, Faculté de Pharmacie, 35 Chemin des Maraîchers, 31062 Toulouse, France; (A.B.); (M.S.); (H.B.)
| | - Pierre Rougé
- UMR 152 PharmaDev, Institut de Recherche et Développement, Université Paul Sabatier, Faculté de Pharmacie, 35 Chemin des Maraîchers, 31062 Toulouse, France; (A.B.); (M.S.); (H.B.)
- Correspondence: ; Tel.: +33-069-552-0851
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Naegeli H, Bresson J, Dalmay T, Dewhurst IC, Epstein MM, Firbank LG, Guerche P, Hejatko J, Moreno FJ, Mullins E, Nogué F, Rostoks N, Sánchez Serrano JJ, Savoini G, Veromann E, Veronesi F, Álvarez F, Ardizzone M, De Sanctis G, Devos Y, Dumont AF, Federici S, Gennaro A, Gómez Ruiz JÁ, Lanzoni A, Neri FM, Papadopoulou N, Paraskevopoulos K, Raffaello T. Scientific Opinion on application EFSA-GMO-NL-2016-132 for authorisation of genetically modified of insect-resistant and herbicide-tolerant soybean DAS-81419-2 × DAS-44406-6 for food and feed uses, import and processing submitted in accordance with Regulation (EC) No 1829/2003 by Dow Agrosciences LCC. EFSA J 2020; 18:e06302. [PMID: 33250936 PMCID: PMC7677967 DOI: 10.2903/j.efsa.2020.6302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Soybean DAS-8419-2 × DAS-44406-6 was developed to provide protection against certain lepidopteran pests and tolerance to 2,4-dichlorophenoxyacetic acid and other related phenoxy herbicides, and glyphosate- and glufosinate ammonium-containing herbicides. The Genetically Modified Organisms (GMO) Panel previously assessed the two single soybean events and did not identify safety concerns. No new data on the single soybean events, leading to modification of the original conclusions on their safety have been identified. The molecular characterisation, comparative analysis (agronomic, phenotypic and compositional characteristics) and the outcome of the toxicological, allergenicity and nutritional assessment indicate that the combination of the single soybean events and of the newly expressed proteins in the two-event stack soybean does not give rise to food and feed safety and nutritional concerns. In the case of accidental release of viable DAS-8419-2 × DAS-44406-6 seeds into the environment, soybean DAS-8419-2 × DAS-44406-6 would not raise environmental safety concerns. The post-market environmental monitoring plan and reporting intervals are in line with the intended uses of soybean DAS-8419-2 × DAS-44406-6. In conclusion, the GMO Panel considers that soybean DAS-8419-2 × DAS-44406-6, as described in this application, is as safe as its conventional counterpart and the non-genetically modified soybean reference varieties tested with respect to potential effects on human and animal health and the environment.
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16
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Zheng H, Yan G, Marquez S, Andler S, Dersjant-Li Y, de Mejia EG. Molecular size and immunoreactivity of ethanol extracted soybean protein concentrate in comparison with other products. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Tuzimski T, Petruczynik A. Review of New Trends in the Analysis of Allergenic Residues in Foods and Cosmetic Products. J AOAC Int 2020; 103:997-1028. [PMID: 33241349 PMCID: PMC8370415 DOI: 10.1093/jaoacint/qsaa015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 01/03/2020] [Accepted: 01/16/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND Allergies represent an important health problem in industrialized countries. Allergen sensitization is an important risk factor for the development of allergic diseases; thus, the identification of an individual's allergen sensitization is essential for the diagnosis and treatment of diseases. OBJECTIVE This review compares different modern methods applied for the analysis of allergens in various matrices (from 2015 to the end of September 2019). CONCLUSIONS Immunological methods are still most frequently used for detection of allergens. These methods are sensitive, but the lack of specificity and cross-reaction of some antibodies can still be a relevant source of errors. DNA-based methods are fast and reliable for determination of protein allergens, but the epitopes of protein allergens with posttranslational modifications and their changes, originated during various processing, cannot be identified through the use of this method. Methods based on application of biosensors are very rapid and easy to use, and can be readily implemented as screening methods to monitor allergens. Recent developments of new high-resolution MS instruments are encouraging and enable development in the analysis of allergens. Fast, very sensitive, reliable, and accurate detection and quantification of allergens in complex samples can be used in the near future. Mass spectrometry coupled with LC, GC, or electrophoretic methods bring additional advances in allergen analysis. The use of LC-MS or LC-MS/MS for the quantitative detection of allergens in various matrices is at present gaining acceptance as a protein-based confirmatory technique over the routinely performed enzyme-linked immunosorbent assays.
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Affiliation(s)
- Tomasz Tuzimski
- Medical University of Lublin, Department of Physical Chemistry, 4A Chodzki Street, Lublin, Poland, 20-093
| | - Anna Petruczynik
- Medical University of Lublin, Department of Inorganic Chemistry, 4A Chodzki Street, Lublin, Poland, 20-093
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18
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Bu G, Li T, Zhu T, Xi G. Identification of the linear immunodominant epitopes in the β subunit of β-conglycinin and preparation of epitope antibodies. Int J Biol Macromol 2020; 154:724-731. [PMID: 32198043 DOI: 10.1016/j.ijbiomac.2020.03.159] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 03/16/2020] [Accepted: 03/16/2020] [Indexed: 11/29/2022]
Abstract
β-conglycinin is one of the major allergens in soybean protein. The purpose of this study was to predict and to identify the major linear epitopes of the β subunit of β-conglycinin. Potential linear epitopes were predicted and confirmed by three immunoinformatics tools combined with the Immune Epitope Database (IEDB). Ten potential epitope peptides were synthesized by Fmoc (9-fluorenylmethoxycarbonyl) solid phase peptide synthesis and were validated by the indirect competitive enzyme-linked immunosorbent assay (ic-ELISA) using sera from soybean allergic patients. Polyclonal antibodies, which were prepared by immunizing rabbits with synthesized peptides, were used to confirm their binding ability with β-conglycinin through western blot and dot blot assays. The results showed that 10 peptides were screened as the main epitopes for the β subunit of β-conglycinin. All 10 peptides (P1-P10) presented IgG binding activity, and P2 and P6 were also validated as IgE binding peptides. Moreover, the results of dot blot showed that P5 and P8 might be located inside the protein molecule. Western blot indicated that most of polyclonal antibodies were bound effectively to the β subunit of β-conglycinin. In addition, few polyclonal antibodies exhibited an immune cross-reaction with the α and α' subunits.
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Affiliation(s)
- Guanhao Bu
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China.
| | - Tanghao Li
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
| | - Tingwei Zhu
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
| | - Guanpeng Xi
- College of Food Science and Technology, Henan University of Technology, Zhengzhou 450001, China
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19
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A WAO - ARIA - GA 2LEN consensus document on molecular-based allergy diagnosis (PAMD@): Update 2020. World Allergy Organ J 2020; 13:100091. [PMID: 32180890 PMCID: PMC7062937 DOI: 10.1016/j.waojou.2019.100091] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Precision allergy molecular diagnostic applications (PAMD@) is increasingly entering routine care. Currently, more than 130 allergenic molecules from more than 50 allergy sources are commercially available for in vitro specific immunoglobulin E (sIgE) testing. Since the last publication of this consensus document, a great deal of new information has become available regarding this topic, with over 100 publications in the last year alone. It thus seems quite reasonable to publish an update. It is imperative that clinicians and immunologists specifically trained in allergology keep abreast of the new and rapidly evolving evidence available for PAMD@. PAMD@ may initially appear complex to interpret; however, with increasing experience, the information gained provides relevant information for the allergist. This is especially true for food allergy, Hymenoptera allergy, and for the selection of allergen immunotherapy. Nevertheless, all sIgE tests, including PAMD@, should be evaluated within the framework of a patient's clinical history, because allergen sensitization does not necessarily imply clinical relevant allergies.
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20
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Xu L, Sun L, Lin H, Ishfaq A, Li Z. Allergenicity of tropomyosin of shrimp (Litopenaeus vannamei) and clam (Ruditapes philippinarum) is higher than that of fish (Larimichthys crocea) via in vitro and in vivo assessment. Eur Food Res Technol 2019. [DOI: 10.1007/s00217-019-03402-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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21
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Min CW, Gupta R, Agrawal GK, Rakwal R, Kim ST. Concepts and strategies of soybean seed proteomics using the shotgun proteomics approach. Expert Rev Proteomics 2019; 16:795-804. [PMID: 31398080 DOI: 10.1080/14789450.2019.1654860] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 08/08/2019] [Indexed: 12/30/2022]
Abstract
Introduction: The last decade has yielded significant developments in the field of proteomics, especially in mass spectrometry (MS) and data analysis tools. In particular, a shift from gel-based to MS-based proteomics has been observed, thereby providing a platform with which to construct proteome atlases for all life forms. Nevertheless, the analysis of plant proteomes, especially those of samples that contain high-abundance proteins (HAPs), such as soybean seeds, remains challenging. Areas covered: Here, we review recent progress in soybean seed proteomics and highlight advances in HAPs depletion methods and peptide pre-fractionation, identification, and quantification methods. We also suggest a pipeline for future proteomic analysis, in order to increase the dynamic coverage of the soybean seed proteome. Expert opinion: Because HAPs limit the dynamic resolution of the soybean seed proteome, the depletion of HAPs is a prerequisite of high-throughput proteome analysis, and owing to the use of two-dimensional gel electrophoresis-based proteomic approaches, few soybean seed proteins have been identified or characterized. Recent advances in proteomic technologies, which have significantly increased the proteome coverage of other plants, could be used to overcome the current complexity and limitation of soybean seed proteomics.
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Affiliation(s)
- Cheol Woo Min
- Department of Plant Bioscience, Life and industry Convergence Research Institute, Pusan National University , Miryang , Korea
| | - Ravi Gupta
- Department of Plant Bioscience, Life and industry Convergence Research Institute, Pusan National University , Miryang , Korea
| | - Ganesh Kumar Agrawal
- Research Laboratory for Biotechnology and Biochemistry (RLABB), GPO 13265 , Kathmandu , Nepal
- GRADE (Global Research Arch for Developing Education) Academy Private Limited , Birgunj , Nepal
| | - Randeep Rakwal
- Research Laboratory for Biotechnology and Biochemistry (RLABB), GPO 13265 , Kathmandu , Nepal
- GRADE (Global Research Arch for Developing Education) Academy Private Limited , Birgunj , Nepal
- Faculty of Health and Sport Sciences, University of Tsukuba , Tsukuba , Ibaraki , Japan
| | - Sun Tae Kim
- Department of Plant Bioscience, Life and industry Convergence Research Institute, Pusan National University , Miryang , Korea
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22
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Piovesana S, Capriotti AL, Foglia P, Montone CM, La Barbera G, Zenezini Chiozzi R, Laganà A, Cavaliere C. Development of an Analytical Method for the Metaproteomic Investigation of Bioaerosol from Work Environments. Proteomics 2019; 19:e1900152. [PMID: 31315163 DOI: 10.1002/pmic.201900152] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 06/21/2019] [Indexed: 11/10/2022]
Abstract
The metaproteomic analysis of air particulate matter provides valuable information about the properties of bioaerosols in the atmosphere and their influence on climate and public health. In this work, a new method for the extraction and analysis of proteins in airborne particulate matter from quartz microfiber filters is developed. Different protein extraction procedures are tested to select the best extraction protocol based on protein recovery. The optimized method is tested for the extraction of proteins from spores of ubiquitous bacteria species and used for the metaproteomic characterization of filters from three work environments. In particular, ambient aerosol samples are collected in a composting plant, in a wastewater treatment plant, and in an agricultural holding. A total of 179, 15, 205, and 444 proteins are identified in composting plant, wastewater treatment plant, and agricultural holding, (cow stable and blending plant), respectively. In agreement with the major categories of primary biological aerosol particles, all identified proteins originated primarily from fungi, bacteria, and plants. The paper is the first metaproteomic study applied to bioaerosol samples collected in occupationally relevant environmental sites and, even though not aimed at monitoring the risk exposure of workers, it provides information on the possible exposure in the working environmental sites.
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Affiliation(s)
- Susy Piovesana
- Department of Chemistry, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Anna Laura Capriotti
- Department of Chemistry, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Patrizia Foglia
- Department of Chemistry, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Carmela Maria Montone
- Department of Chemistry, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Giorgia La Barbera
- Department of Chemistry, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | | | - Aldo Laganà
- Department of Chemistry, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
| | - Chiara Cavaliere
- Department of Chemistry, Sapienza Università di Roma, Piazzale Aldo Moro 5, 00185, Rome, Italy
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Murakami H, Ogawa T, Takafuta A, Yano E, Zaima N, Moriyama T. Percutaneous Sensitization to Soybean Proteins Is Attenuated by Oral Tolerance. J Nutr Sci Vitaminol (Tokyo) 2018; 64:483-486. [PMID: 30606971 DOI: 10.3177/jnsv.64.483] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Oral tolerance prevents allergic responses, but cutaneous exposure to food allergens predisposes individuals to food allergies. Soybean, a major allergenic food, is also an ingredient in various cosmetic products. However, it remains to be determined whether oral tolerance prevents percutaneous sensitization to soybean proteins in humans or animal models. In this study, BALB/c mice were divided into three groups; the SS group fed a soybean-containing diet, and the CS and control (C) groups fed a soybean-free diet. After being dorsally shaved, the CS and SS groups were epicutaneously exposed to a soybean extract while the control group was exposed to only the carrier. Specific IgE and IgG1 immunoglobulins secreted in response to the soybean proteins were measured using enzyme-linked immunosorbent assays. Exposure to the soybean extract elicited the secretion of IgE and IgG1 specific for Gly m 5 and Gly m 6, and trypsin inhibitor. Oral soybean consumption attenuated the secretion of all the soybean-specific IgEs and IgG1s, suggesting that percutaneous sensitization to soybean proteins is attenuated by oral tolerance.
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Affiliation(s)
- Hiroki Murakami
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University
| | - Takashi Ogawa
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University
| | - Akiho Takafuta
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University
| | - Erika Yano
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University
| | - Nobuhiro Zaima
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University
- Agricultural Technology and Innovation Research Institute, Kindai University
| | - Tatsuya Moriyama
- Department of Applied Biological Chemistry, Graduate School of Agriculture, Kindai University
- Agricultural Technology and Innovation Research Institute, Kindai University
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