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Kuang X, Deng Z, Feng B, He R, Chen L, Liang G. The mechanism of epigallocatechin-3-gallate inhibiting the antigenicity of β-lactoglobulin under pH 6.2, 7.4 and 8.2: Multi-spectroscopy and molecular simulation methods. Int J Biol Macromol 2024; 268:131773. [PMID: 38657930 DOI: 10.1016/j.ijbiomac.2024.131773] [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: 12/18/2023] [Revised: 03/01/2024] [Accepted: 04/21/2024] [Indexed: 04/26/2024]
Abstract
The antigenicity of β-lactoglobulin (β-LG) can be influenced by pH values and reduced by epigallocatechin-3-gallate (EGCG). However, a detailed mechanism concerning EGCG decreasing the antigenicity of β-LG at different pH levels lacks clarity. Here, we explore the inhibition mechanism of EGCG on the antigenicity of β-LG at pH 6.2, 7.4 and 8.2 using enzyme-linked immunosorbent assay, multi-spectroscopy, mass spectrometry and molecular simulations. The results of Fourier transform infrared spectroscopy (FTIR) and circular dichroism (CD) elucidate that the noncovalent binding of EGCG with β-LG induces variations in the secondary structure and conformations of β-LG. Moreover, EGCG inhibits the antigenicity of β-LG the most at pH 7.4 (98.30 %), followed by pH 6.2 (73.18 %) and pH 8.2 (36.24 %). The inhibitory difference is attributed to the disparity in the number of epitopes involved in the interacting regions of EGCG and β-LG. Our findings suggest that manipulating pH conditions may enhance the effectiveness of antigenic inhibitors, with the potential for further application in the food industry.
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Affiliation(s)
- Xiaoyu Kuang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400045, China
| | - Zhifen Deng
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400045, China
| | - Bowen Feng
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400045, China
| | - Ran He
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400045, China
| | - Lang Chen
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400045, China
| | - Guizhao Liang
- Key Laboratory of Biorheological Science and Technology (Chongqing University), Ministry of Education, Bioengineering College, Chongqing University, Chongqing 400045, China.
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2
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Zhang K, Zhang L, Han M, Pu Z, Zhong J, Hou Y, Zhou P. Higher Potential Sensitization of Cow α S1-Casein over Goat α S1-Casein in a Mouse Model due to Enhanced Dendritic Cell Uptake and Activation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:2765-2776. [PMID: 38277407 DOI: 10.1021/acs.jafc.3c07688] [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: 01/28/2024]
Abstract
Cow's milk allergy is a common food allergy, with the milk protein αS1-casein being a major allergen. This study aimed to investigate differences in sensitization between cow and goat αS1-CN. Cow and goat αS1-CN were labeled with fluorescent dyes and given to mice sensitized with cholera toxin adjuvant. Both proteins reached immune organs, suggesting no major difference in digestion. However, compared with goat αS1-CN, cow αS1-CN is more readily taken up by dendritic cells, inducing dendritic cell maturation. Furthermore, cow αS1-CN can more effectively induce the generation of Th2 cells, leading to a higher production of specific IgE. In a Caco-2/RBL-2H3 cell model, cow αS1-CN caused more mast cell degranulation and loss of epithelial barrier integrity than goat αS1-CN. In summary, this study found differences in immune responses between cow and goat milk αS1-CN. Cow αS1-CN elicited stronger dendritic cell and Th2 responses, leading to increased mast cell degranulation.
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Affiliation(s)
- Kai Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Lina Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Mengyu Han
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Zhiping Pu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Jinjing Zhong
- Ausnutria Hyproca Nutrition Co. Ltd., Changsha, Hunan 410011, China
| | - Yanmei Hou
- Ausnutria Hyproca Nutrition Co. Ltd., Changsha, Hunan 410011, China
| | - Peng Zhou
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
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Hussain M, Gantumur MA, Manzoor MF, Hussain K, Xu J, Aadil RM, Qayum A, Ahmad I, Zhong H, Guan R. Sustainable emerging high-intensity sonication processing to enhance the protein bioactivity and bioavailability: An updated review. ULTRASONICS SONOCHEMISTRY 2023; 97:106464. [PMID: 37271028 DOI: 10.1016/j.ultsonch.2023.106464] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/19/2023] [Accepted: 05/28/2023] [Indexed: 06/06/2023]
Abstract
High-intensity ultrasound (HIU) is considered one of the promising non-chemical eco-friendly techniques used in food processing. Recently (HIU) is known to enhance food quality, extraction of bioactive compounds and formulation of emulsions. Various foods are treated with ultrasound, including fats, bioactive compounds, and proteins. Regarding proteins, HIU induces acoustic cavitation and bubble formation, causing the unfolding and exposure of hydrophobic regions, resulting in functional, bioactive, and structural enhancement. This review briefly portrays the impact of HIU on the bioavailability and bioactive properties of proteins; the effect of HIU on protein allergenicity and anti-nutritional factors has also been discussed. HIU can enhance bioavailability and bioactive attributes in plants and animal-based proteins, such as antioxidant activity, antimicrobial activity, and peptide release. Moreover, numerous studies revealed that HIU treatment could enhance functional properties, increase the release of short-chain peptides, and decrease allergenicity. HIU could replace the chemical and heat treatments used to enhance protein bioactivity and digestibility; however, its applications are still on research and small scale, and its usage in industries is yet to be implemented.
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Affiliation(s)
- Muhammad Hussain
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, China
| | - Munkh-Amgalan Gantumur
- Food College, Northeast Agricultural University, No. 600 Changjiang St. Xian fang Dist, 150030 Harbin, China
| | - Muhammad Faisal Manzoor
- Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan 528225, China; School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
| | - Kifayat Hussain
- Departments of Animal Nutrition, Institute of Animal and Dairy Sciences, University of Agriculture Faisalabad, Pakistan
| | - Jie Xu
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, China
| | - Rana Muhammad Aadil
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad 38000, Pakistan
| | - Abdul Qayum
- School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, Jiangsu 212013, China
| | - Ishtiaq Ahmad
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China
| | - Hao Zhong
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, China.
| | - Rongfa Guan
- College of Food Science and Technology, Zhejiang University of Technology, Hangzhou 310014, China; Key Laboratory of Marine Fishery Resources Exploitment & Utilization of Zhejiang Province, China.
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Ferry JM, Galera-Martínez R, Campoy C, Sáenz de Pipaón M, Jarocka-Cyrta E, Walkowiak J, Romańczuk B, Escribano J, Gispert M, Grattarola P, Gruszfeld D, Iglesia I, Grote V, Demmelmair H, Handel U, Gallier S, Koletzko B. Effects of infant feeding with goat milk formula or cow milk formula on atopic dermatitis: protocol of the randomised controlled Goat Infant Formula Feeding and Eczema (GIraFFE) trial. BMJ Open 2023; 13:e070533. [PMID: 37055203 PMCID: PMC10106058 DOI: 10.1136/bmjopen-2022-070533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/15/2023] Open
Abstract
INTRODUCTION Atopic dermatitis (AD) is a chronic, inflammatory skin condition significantly affecting quality of life. A small randomised trial showed an approximately one-third lower incidence of AD in goat milk formula-fed compared with cow milk formula-fed infants. However, due to limited statistical power, AD incidence difference was not found to be significant. This study aims to explore a potential risk reduction of AD by feeding a formula based on whole goat milk (as a source of protein and fat) compared with a formula based on cow milk proteins and vegetable oils. METHODS AND ANALYSIS This two-arm (1:1 allocation), parallel, randomised, double-blind, controlled nutritional trial shall enrol up to 2296 healthy term-born infants until 3 months of age, if parents choose to start formula feeding. Ten study centres in Spain and Poland are participating. Randomised infants receive investigational infant and follow-on formulas either based on whole goat milk or on cow milk until the age of 12 months. The goat milk formula has a whey:casein ratio of 20:80 and about 50% of the lipids are milk fat from whole goat milk, whereas the cow milk formula, used as control, has a whey:casein ratio of 60:40 and 100% of the lipids are from vegetable oils. The energy and nutrient levels in both goat and cow milk formulas are the same. The primary endpoint is the cumulative incidence of AD until the age of 12 months diagnosed by study personnel based on the UK Working Party Diagnostic Criteria. The secondary endpoints include reported AD diagnosis, measures of AD, blood and stool markers, child growth, sleep, nutrition and quality of life. Participating children are followed until the age of 5 years. ETHICS AND DISSEMINATION Ethical approval was obtained from the ethical committees of all participating institutions. TRIAL REGISTRATION NUMBER NCT04599946.
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Affiliation(s)
- Jill Marie Ferry
- Division of Metabolic and Nutritional Medicine, Department of Paediatrics, Dr von Hauner Children's Hospital, University Hospital, Ludwig Maximilian University Munich, Munich, Germany
| | - Rafael Galera-Martínez
- Unit of Pediatric Gastroenterology and Nutrition, Torrecárdenas University Hospital, Almería, Spain
| | - Cristina Campoy
- Department of Paediatrics, EURISTIKOS Excellence Centre for Paediatric Research, School of Medicine, University of Granada, Granada, Spain
- Instituto Biosanitario de Granada (Ibs-Granada), Fundación Parque Tecnológico de Ciencias de la Salud de Granada, Granada, Spain
| | | | - Elzbieta Jarocka-Cyrta
- Department of Pediatrics, Gastroenterology, and Nutrition, Regional Specialized Children's Hospital in Olsztyn, Medical Faculty Collegium Medicum University of Warmia and Mazury, Olsztyn, Poland
| | - Jarosław Walkowiak
- Department of Pediatric Gastroenterology and Metabolic Diseases, Poznan University of Medical Sciences, Poznan, Poland
| | - Bartosz Romańczuk
- Department of Pediatrics, Medical College, University of Rzeszów, Rzeszów, Poland
| | - Joaquin Escribano
- IISPV, Pediatric Nutrition and Human Development Research Unit, Universitat Rovira i Virgili, Tarragona, Spain
- Department of Paediatric, Hospital Universitari Sant Joan de Reus, Reus, Spain
| | - Mariona Gispert
- IISPV, Pediatric Nutrition and Human Development Research Unit, Universitat Rovira i Virgili, Tarragona, Spain
| | | | - Dariusz Gruszfeld
- Department of Paediatric, Children's Memorial Health Institute in Warsaw, Warsaw, Poland
| | - Iris Iglesia
- Agrifood Institute of Aragon (IA2), Growth, Exercise, Nutrition and Development (GENUD) Research Group, University of Zaragoza, Zaragoza, Spain
- Instituto de Investigación Sanitaria Aragón (IIS-Aragón), Zaragoza, Spain
| | - Veit Grote
- Division of Metabolic and Nutritional Medicine, Department of Paediatrics, Dr von Hauner Children's Hospital, University Hospital, Ludwig Maximilian University Munich, Munich, Germany
| | - Hans Demmelmair
- Division of Metabolic and Nutritional Medicine, Department of Paediatrics, Dr von Hauner Children's Hospital, University Hospital, Ludwig Maximilian University Munich, Munich, Germany
| | - Uschi Handel
- Division of Metabolic and Nutritional Medicine, Department of Paediatrics, Dr von Hauner Children's Hospital, University Hospital, Ludwig Maximilian University Munich, Munich, Germany
| | | | - Berthold Koletzko
- Division of Metabolic and Nutritional Medicine, Department of Paediatrics, Dr von Hauner Children's Hospital, University Hospital, Ludwig Maximilian University Munich, Munich, Germany
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Lajnaf R, Feki S, Ben Ameur S, Attia H, Kammoun T, Ayadi MA, Masmoudi H. Cows' milk alternatives for children with cows' milk protein allergy - Review of health benefits and risks of allergic reaction. Int Dairy J 2023. [DOI: 10.1016/j.idairyj.2023.105624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/26/2023]
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Jia W, Zhu J, Wang X, Peng J, Shi L. Covalent or non-covalent binding of polyphenols, polysaccharides, metal ions and nanoparticles to beta-lactoglobulin and advanced processing techniques: Reduce allergenicity and regulate digestion of beta-lactoglobulin. Trends Food Sci Technol 2022. [DOI: 10.1016/j.tifs.2022.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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