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Lin JF, Chang KL, Hsieh BS, Hu YC, Huang ES, Yu HS. Development of validated sandwich ELISA for detecting peanut allergen Ara h 3 in food. Food Chem 2024; 445:138757. [PMID: 38367563 DOI: 10.1016/j.foodchem.2024.138757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 02/01/2024] [Accepted: 02/13/2024] [Indexed: 02/19/2024]
Abstract
Peanut is an important food that can cause food allergies, often leading to moderate and severe allergic symptoms such as skin rashes, asthma, and even anaphylactic shock.Research indicates that Ara h 3 is one of the major peanut allergen. In order to establish a simple analytical method for detecting Ara h 3, we developed a sandwich enzyme-linked immunosorbent assay (ELISA) with antibodies that were induced from purified Ara h 3. The experimental results showed that the purified Ara h 3 had good purity, and we successfully prepared capture and detection antibodies. The method established in this study exhibited high specificity and did not cross-react with soybeans, cashew nuts, and sesame. For validation, including precision, recovery and sensitivity were in good condition. We also detected the Ara h 3 in peanut related foods. Overall, the ELISA developed in this study is a reliable method for Ara h 3 detection.
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Affiliation(s)
- Jia-Fong Lin
- Department of Food Science, National Pingtung University of Science and Technology, Pingtung 912, Taiwan.
| | - Kee-Lung Chang
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Bau-Shan Hsieh
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yu-Chen Hu
- Department of Biochemistry, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Edward S Huang
- Department of Gastroenterology, Palo Alto Medical Foundation, Mountain View, CA 94040, USA.
| | - Hsu-Sheng Yu
- Department of Food Science, National Pingtung University of Science and Technology, Pingtung 912, Taiwan.
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2
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Hsieh KC, Ting Y. Atmospheric cold plasma reduces Ara h 1 antigenicity in roasted peanuts by altering the protein structure and amino acid profile. Food Chem 2024; 441:138115. [PMID: 38183716 DOI: 10.1016/j.foodchem.2023.138115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 10/23/2023] [Accepted: 11/27/2023] [Indexed: 01/08/2024]
Abstract
Ara h 1 is the major allergen in peanuts. To enhance the unique flavor, peanuts are usually roasted at high temperatures. However, roasting can increase the allergenic potential, owing to glycation of allergens. Atmospheric cold plasma (ACP) is a non-thermal processing technology that generates reactive species, enabling protein structural changes. Herein, glucose was also added to the ACP-treated peanut protein before roasting. The content and antigenicity of the advanced glycation end products were measured. The antigenicity was evaluated by ELISA and in vitro digestion assays. The amino acid profile and secondary and tertiary protein structures were also assessed. The antigenicity of Ara h 1 decreased by 91 % and 76 % after 30 min of air and nitrogen plasma treatment, respectively. The glycation degree and thermal and digestive stabilities were also reduced. These results correlated with the structural changes, denaturation, and aggregation. Therefore, cold plasma may reduce the allergic effects of peanuts.
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Affiliation(s)
- Kuan-Chen Hsieh
- Institute of Food Science and Technology, National Taiwan University, No.1, Sec. 4, Roosevelt Rd, Taipei, Taiwan
| | - Yuwen Ting
- Institute of Food Science and Technology, National Taiwan University, No.1, Sec. 4, Roosevelt Rd, Taipei, Taiwan.
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3
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Wang M, Wang S, Sun X, Deng Z, Niu B, Chen Q. Study on mechanism of increased allergenicity induced by Ara h 3 from roasted peanut using bone marrow-derived dendritic cells. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2022.09.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhang Y, Bhardwaj SR, Vilches A, Breksa A, Lyu SC, Chinthrajah S, Nadeau KC, Jin T. IgE binding epitope mapping with TL1A tagged peptides. Mol Immunol 2023; 153:194-199. [PMID: 36527758 DOI: 10.1016/j.molimm.2022.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 11/22/2022] [Accepted: 12/01/2022] [Indexed: 12/22/2022]
Abstract
Linear IgE epitopes play essential roles in persistent allergies, including peanut and tree nut allergies. Using chemically synthesized peptides attached to membranes and microarray experiments is one approach for determining predominant epitopes that has seen success. However, the overall expense of this approach and the inherent challenges in scaling up the production and purification of synthetic peptides precludes the general application of this approach. To overcome this problem, we have constructed a plasmid vector for expressing peptides sandwiched between an N-terminal His-tag and a trimeric protein. The vector was used to make overlapping peptides derived from peanut allergens Ara h 2. All the peptides were successfully expressed and purified. The resulting peptides were applied to identify IgE binding epitopes of Ara h 2 using four sera samples from individuals with known peanut allergies. New and previously defined dominant IgE binding epitopes of Ara h 2 were identified. This system may be readily applied to produce agents for component- and epitope-resolved food allergy diagnosis.
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Affiliation(s)
- Yuzhu Zhang
- US Department of Agriculture, Agricultural Research Service, Pacific West Area, Western Regional Research Center, 800 Buchanan Street, Albany, CA 94710, USA.
| | - Shilpa R Bhardwaj
- US Department of Agriculture, Agricultural Research Service, Pacific West Area, Western Regional Research Center, 800 Buchanan Street, Albany, CA 94710, USA
| | - Ana Vilches
- US Department of Agriculture, Agricultural Research Service, Pacific West Area, Western Regional Research Center, 800 Buchanan Street, Albany, CA 94710, USA
| | - Andrew Breksa
- US Department of Agriculture, Agricultural Research Service, Pacific West Area, Western Regional Research Center, 800 Buchanan Street, Albany, CA 94710, USA
| | - Shu-Chen Lyu
- Division of Pediatric Immunology, Allergy, and Rheumatology, Department of Pediatrics, Stanford University School of Medicine, 269 Campus Dr, Stanford, CA 94305, USA
| | - Sharon Chinthrajah
- Division of Pediatric Immunology, Allergy, and Rheumatology, Department of Pediatrics, Stanford University School of Medicine, 269 Campus Dr, Stanford, CA 94305, USA
| | - Kari C Nadeau
- Division of Pediatric Immunology, Allergy, and Rheumatology, Department of Pediatrics, Stanford University School of Medicine, 269 Campus Dr, Stanford, CA 94305, USA
| | - Tengchuan Jin
- Hefei National Laboratory for Physical Sciences at Microscale, Laboratory of Structural Immunology, CAS Key Laboratory of Innate Immunity and Chronic Disease, School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, Anhui 230027 China.
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Zhang M, Liu L, Yang C, Sun Z, Xu X, Li L, Zang H. Research on the Structure of Peanut Allergen Protein Ara h1 Based on Aquaphotomics. Front Nutr 2021; 8:696355. [PMID: 34222311 PMCID: PMC8249571 DOI: 10.3389/fnut.2021.696355] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 05/18/2021] [Indexed: 11/13/2022] Open
Abstract
Peanut allergy is becoming a life-threatening disease that could induce severe allergic reactions in modern society, especially for children. The most promising method applied for deallergization is heating pretreatment. However, the mechanism from the view of spectroscopy has not been illustrated. In this study, near-infrared spectroscopy (NIRS) combined with aquaphotomics was introduced to help us understand the detailed structural changes information during the heating process. First, near-infrared (NIR) spectra of Ara h1 were acquired from 25 to 80°C. Then, aquaphotomics processing tools including principal component analysis (PCA), continuous wavelet transform (CWT), and two-dimensional correlation spectroscopy (2D-COS) were utilized for better understanding the thermodynamic changes, secondary structure, and the hydrogen bond network of Ara h1. The results indicated that about 55°C could be a key temperature, which was the structural change point. During the heating process, the hydrogen bond network was destroyed, free water was increased, and the content of protein secondary structure was changed. Moreover, it could reveal the interaction between the water structure and Ara h1 from the perspective of water molecules, and explain the effect of temperature on the Ara h1 structure and hydrogen-bonding system. Thus, this study described a new way to explore the thermodynamic properties of Ara h1 from the perspective of spectroscopy and laid a theoretical foundation for the application of temperature-desensitized protein products.
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Affiliation(s)
- Mengqi Zhang
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Liang Liu
- Research Institute Pharmacy and Medical Science, University of South Australia, Adelaide, SA, Australia
| | - Cui Yang
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Zhongyu Sun
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Xiuhua Xu
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Lian Li
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China.,Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan, China.,National Medical Products Administration Key Laboratory for Technology Research and Evaluation of Drug Products, Shandong University, Jinan, China
| | - Hengchang Zang
- School of Pharmaceutical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, China.,Key Laboratory of Chemical Biology, Ministry of Education, Shandong University, Jinan, China.,National Medical Products Administration Key Laboratory for Technology Research and Evaluation of Drug Products, Shandong University, Jinan, China.,National Glycoengineering Research Center, Shandong University, Jinan, China
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Md A, Maeda M, Matsui T, Takasato Y, Ito K, Kimura Y. Purification and molecular characterization of a truncated-type Ara h 1, a major peanut allergen: oligomer structure, antigenicity, and glycoform. Glycoconj J 2021; 38:67-76. [PMID: 33439436 DOI: 10.1007/s10719-020-09969-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Revised: 12/11/2020] [Accepted: 12/23/2020] [Indexed: 11/29/2022]
Abstract
Peanut allergies are among the most severe food allergies, and several allergenic proteins referred to as Ara h 1-Ara h 17 have been identified from peanut seeds. The molecular characterization of Ara h 1 (63 kDa), a glycosylated allergen, has almost been completed, and the occurrence of two homologous genes (clone 41B and clone P17) has been identified. In this study, we found a new variant of Ara h 1 i.e. 54 kDa, in which the N-terminal amino acid sequence was EGREGEQ-, indicating that the N-terminal domain of 63 kDa Ara h 1 had been removed. This new isoform was obtained from the run-through fraction of hydrophobic interaction chromatography while 63 kDa Ara h 1 was tightly bound to the hydrophobic resins, suggesting that the removal of the N-terminal domain resulted in extreme hydrophilic properties. We found that 63 kDa Ara h 1 occurs as higher order homo-oligomeric conformations such as decamer or nonamer, while 54 kDa Ara h 1 occurs exclusively as a homotrimer, indicating that the N-terminal domain of the 63 kDa molecule may be involved in higher order oligomerization. When antisera from peanut-allergic patients were treated with both the Ara h 1 molecules, the immunoglobulin E (IgE) antibodies in these sera reacted with each Ara h 1 molecule, suggesting that the C-terminal as well as the N-terminal domains of Ara h 1 contribute significantly to the epitope formations of this peanut glycoallergen. Furthermore, the glycoform analyses of N-glycans linked to 63 kDa and 54 kDa Ara h 1 subunits revealed that both typical high-mannose type and β-xylosylated type N-glycans are linked to the molecules. The cross-reactivity of IgE against Ara h 1 in the serum of one peanut allergy patient was completely lost by de-N-glycosylation, indicating the N-glycan of Ara h 1 was the sole epitope for the Ara h 1- specific IgE in the patient.
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Affiliation(s)
- Asaduzzaman Md
- Department of Biofunctional Chemistry, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530, Japan
| | - Megumi Maeda
- Department of Biofunctional Chemistry, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530, Japan
| | - Teruaki Matsui
- Department of Allergy, Aichi Children's Health and Medical Center, 7-426, Obu, Morioka, Aichi, 474-8710, Japan
| | - Yoshihiro Takasato
- Department of Allergy, Aichi Children's Health and Medical Center, 7-426, Obu, Morioka, Aichi, 474-8710, Japan
| | - Komei Ito
- Department of Allergy, Aichi Children's Health and Medical Center, 7-426, Obu, Morioka, Aichi, 474-8710, Japan
| | - Yoshinobu Kimura
- Department of Biofunctional Chemistry, Graduate School of Environmental and Life Science, Okayama University, 1-1-1 Tsushima-Naka, Okayama, 700-8530, Japan.
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El-Shishtawy RM, Mohamed SA, Asiri AM, Ahmed NS. Synthesis of hemicyanine-based chitosan ligands in dye-affinity chromatography for the purification of chewing stick peroxidase. Int J Biol Macromol 2020; 148:401-414. [DOI: 10.1016/j.ijbiomac.2020.01.088] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 11/26/2022]
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8
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Ariaee N, Varasteh A, Jabbari Azad F, Sankian M. Preparation allergenic pollen extracts; the points should be considered to make high-quality products. J Immunoassay Immunochem 2018; 40:26-39. [PMID: 30422060 DOI: 10.1080/15321819.2018.1543705] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Atopic diseases have an increasing trend worldwide during the last two decades. Determining the main cause of allergic diseases, allergens, is the first step in managing and improving the issue, usually is done by Skin Prick tests (SPTs). Having allergenic extract in high quality is desired to perform a reliable SPT. Several parameters of extracts are considered including composition, stability, potency, preservation conditions, and unit definition. In this review, these factors have been explained pointing to factors might have profitable points or harmful drawback in the quality of allergen extracts.
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Affiliation(s)
- Nazila Ariaee
- a Allergy Research Center , Mashhad University of Medical Sciences , Mashhad , Iran
| | - Abdolreza Varasteh
- a Allergy Research Center , Mashhad University of Medical Sciences , Mashhad , Iran
| | | | - Mojtaba Sankian
- b Immunology Research Center , Mashhad University of Medical Sciences , Mashhad , Iran
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9
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Abstract
Peanut allergens have the potential to negatively impact on the health and quality of life of millions of consumers worldwide. The seeds of the peanut plant Arachis hypogaea contain an array of allergens that are able to induce the production of specific IgE antibodies in predisposed individuals. A lot of effort has been focused on obtaining the sequences and structures of these allergens due to the high health risk they represent. At present, 16 proteins present in peanuts are officially recognized as allergens. Research has also focused on their in-depth immunological characterization as well as on the design of modified hypoallergenic derivatives for potential use in clinical studies and the formulation of strategies for immunotherapy. Detailed research protocols are available for the purification of natural allergens as well as their recombinant production in bacterial, yeast, insect, and algal cells. Purified allergen molecules are now routinely used in diagnostic multiplex protein arrays for the detection of the presence of allergen-specific IgE. This review gives an overview on the wealth of knowledge that is available on individual peanut allergens.
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Affiliation(s)
- Chiara Palladino
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria
| | - Heimo Breiteneder
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, Vienna, Austria.
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Abejón R, Abejón A, Garea A, Tsuru T, Irabien A, Belleville MP, Sanchez-Marcano J. In Silico Evaluation of Ultrafiltration and Nanofiltration Membrane Cascades for Continuous Fractionation of Protein Hydrolysate from Tuna Processing Byproduct. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b01495] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Abejón
- Institut Européen
des Membranes (IEM), ENSCM, UM, CNRS - Université de Montpellier,
CC 047, Place Eugène Bataillon, 34095 Montpellier, France
- Department
of Chemical Engineering, Hiroshima University, 1-4-1 Kagayami-yama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - A. Abejón
- Departamento
de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. Los Castros s/n, 39005 Santander, Cantabria, Spain
| | - A. Garea
- Departamento
de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. Los Castros s/n, 39005 Santander, Cantabria, Spain
| | - T. Tsuru
- Department
of Chemical Engineering, Hiroshima University, 1-4-1 Kagayami-yama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - A. Irabien
- Departamento
de Ingenierías Química y Biomolecular, Universidad de Cantabria, Avda. Los Castros s/n, 39005 Santander, Cantabria, Spain
| | - M. P. Belleville
- Institut Européen
des Membranes (IEM), ENSCM, UM, CNRS - Université de Montpellier,
CC 047, Place Eugène Bataillon, 34095 Montpellier, France
| | - J. Sanchez-Marcano
- Institut Européen
des Membranes (IEM), ENSCM, UM, CNRS - Université de Montpellier,
CC 047, Place Eugène Bataillon, 34095 Montpellier, France
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