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Xu Y, Zhang F, Mu G, Zhu X. Effect of lactic acid bacteria fermentation on cow milk allergenicity and antigenicity: A review. Compr Rev Food Sci Food Saf 2024; 23:e13257. [PMID: 38284611 DOI: 10.1111/1541-4337.13257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 09/22/2023] [Accepted: 10/02/2023] [Indexed: 01/30/2024]
Abstract
Cow milk is a major allergenic food. The potential prevention and treatment effects of lactic acid bacteria (LAB)-fermented dairy products on allergic symptoms have garnered considerable attention. Cow milk allergy (CMA) is mainly attributed to extracellular and/or cell envelope proteolytic enzymes with hydrolysis specificity. Numerous studies have demonstrated that LAB prevents the risk of allergies by modulating the development and regulation of the host immune system. Specifically, LAB and its effectors can enhance intestinal barrier function and affect immune cells by interfering with humoral and cellular immunity. Fermentation hydrolysis of allergenic epitopes is considered the main mechanism of reducing CMA. This article reviews the linear epitopes of allergens in cow milk and the effect of LAB on these allergens and provides insight into the means of predicting allergenic epitopes by conventional laboratory analysis methods combined with molecular simulation. Although LAB can reduce CMA in several ways, the mechanism of action remains partially clarified. Therefore, this review additionally attempts to summarize the main mechanism of LAB fermentation to provide guidance for establishing an effective preventive and treatment method for CMA and serve as a reference for the screening, research, and application of LAB-based intervention.
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Affiliation(s)
- Yunpeng Xu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning, P. R. China
| | - Feifei Zhang
- Liaoning Ocean and Fisheries Science Research Institute, Dalian, Liaoning, P. R. China
| | - Guangqing Mu
- Dalian Key Laboratory of Functional Probiotics, Dalian, Liaoning, P. R. China
| | - Xuemei Zhu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, Liaoning, P. R. China
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Chunder R, Heider T, Kuerten S. The prevalence of IgG antibodies against milk and milk antigens in patients with multiple sclerosis. Front Immunol 2023; 14:1202006. [PMID: 37492579 PMCID: PMC10364054 DOI: 10.3389/fimmu.2023.1202006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 06/21/2023] [Indexed: 07/27/2023] Open
Abstract
Introduction Multiple sclerosis (MS) is a chronic demyelinating disease of the central nervous system (CNS). The pathophysiology of MS is complex and is said to be influenced by multiple environmental determinants, including diet. We and others have previously demonstrated how consumption of bovine milk can aggravate disease severity in MS patients, which can be explained by molecular mimicry between milk antigens and those expressed within the CNS. In this study we set out to identify alternatives to drinking cow milk which might be less detrimental to MS patients who have a genetic predisposition towards developing antibody titers against bovine milk antigens that cross-react with CNS antigens. Methods To this end, we screened 35 patients with MS and 20 healthy controls for their IgG reactivity against an array of animal-sourced milk, plant-based alternatives as well as individual antigens from bovine milk. Results We demonstrate that MS patients have a significantly higher IgG response to animal-sourced milk, especially cow milk, in comparison to healthy donors. We also show that the reactivity to cow milk in MS patients can be attributed to reactivity against different bovine milk antigens. Finally, our correlation data indicate the co-existence of antibodies to individual bovine milk antigens and their corresponding cross-reactive CNS antigens. Discussion Taken together, we suggest screening of blood from MS patients for antibodies against different types of milk and milk antigens in order to establish a personalized diet regimen.
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Affiliation(s)
- Rittika Chunder
- Institute of Neuroanatomy, Medical Faculty, University of Bonn, Bonn, Germany
| | - Thorsten Heider
- Clinic for Neurology, Klinikum St. Marien Amberg, Amberg, Germany
| | - Stefanie Kuerten
- Institute of Neuroanatomy, Medical Faculty, University of Bonn, Bonn, Germany
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3
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Schocker F, Jappe U. Breastfeeding: Maternally Transferred Allergens in Breast Milk: Protective or Sensitizing? Mol Nutr Food Res 2022; 66:e2200066. [PMID: 35619210 DOI: 10.1002/mnfr.202200066] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/01/2022] [Indexed: 11/11/2022]
Abstract
According to a thorough literature search, the following allergen sources have been associated with allergy symptoms in the exclusively breastfed child: hen's egg, cow's milk, peanut, trout. Subsequently, several studies use the advantage of molecular allergology and investigate the potential transfer of single allergens into breastmilk. This is shown for caseins, whey proteins, gliadin, ovalbumin, ovomucoid, the peanut allergens Ara h 2 and Ara h 6, as well as the inhalant allergens Der p 1 and Blo t 5. It is still a matter of debate whether or not food allergens transferred via breastfeeding to the baby promote allergic sensitization or induce tolerance and via which mechanisms they may shift the immune response to the one or other side. Noteworthy, some breastfed children are described to be sensitized to foods before being exposed to solid foods, and this exposure may have occurred through breastmilk. In the light of these findings the investigation of food allergens transferred from the mother's diet into breastmilk and their impact on sensitization or allergy prevention remains a current topic in research. This review describes breastmilk in its composition and provides data on the identification of food allergens therein including human and mouse studies.
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Affiliation(s)
- Frauke Schocker
- Division of Clinical and Molecular Allergology, Priority Research Area Asthma and Allergy, Research Center Borstel, Leibniz Lung Center, Borstel, Germany.,Airway Research Center North (ARCN), Member of the German Center for Lung Research, Germany
| | - Uta Jappe
- Division of Clinical and Molecular Allergology, Priority Research Area Asthma and Allergy, Research Center Borstel, Leibniz Lung Center, Borstel, Germany.,Airway Research Center North (ARCN), Member of the German Center for Lung Research, Germany.,Interdisciplinary Allergy Outpatient Clinic, Department of Pneumology, University of Lübeck, Lübeck, Germany
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Antibody cross-reactivity between casein and myelin-associated glycoprotein results in central nervous system demyelination. Proc Natl Acad Sci U S A 2022; 119:e2117034119. [PMID: 35235454 PMCID: PMC8916005 DOI: 10.1073/pnas.2117034119] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Multiple sclerosis (MS) is the most prevalent autoimmune disease of the central nervous system (CNS), leading to irreversible deficits in young adults. Its pathophysiology is believed to be influenced by environmental determinants. As far back as the 1990s, it had been suggested that there is a correlation between the consumption of cow’s milk and the prevalence of MS. Here, we not only demonstrate that a high percentage of MS patients harbor antibodies to bovine casein but also that antibody cross-reactivity between cow’s milk and CNS antigens can exacerbate demyelination. Our data broaden the current understanding of how diet influences the etiology of MS and set the stage for combining personalized diet plans with disease-modifying treatment strategies. Multiple sclerosis (MS) is a neuroinflammatory demyelinating disease of the central nervous system (CNS) with a high socioeconomic relevance. The pathophysiology of MS, which is both complex and incompletely understood, is believed to be influenced by various environmental determinants, including diet. Since the 1990s, a correlation between the consumption of bovine milk products and MS prevalence has been debated. Here, we show that C57BL/6 mice immunized with bovine casein developed severe spinal cord pathology, in particular, demyelination, which was associated with the deposition of immunoglobulin G. Furthermore, we observed binding of serum from casein-immunized mice to mouse oligodendrocytes in CNS tissue sections and in culture where casein-specific antibodies induced complement-dependent pathology. We subsequently identified myelin-associated glycoprotein (MAG) as a cross-reactive antigenic target. The results obtained from the mouse model were complemented by clinical data showing that serum samples from patients with MS contained significantly higher B cell and antibody reactivity to bovine casein than those from patients with other neurologic diseases. This reactivity correlated with the B cell response to a mixture of CNS antigens and could again be attributed to MAG reactivity. While we acknowledge disease heterogeneity among individuals with MS, we believe that consumption of cow’s milk in a subset of patients with MS who have experienced a previous loss of tolerance to bovine casein may aggravate the disease. Our data suggest that patients with antibodies to bovine casein might benefit from restricting dairy products from their diet.
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Are Physicochemical Properties Shaping the Allergenic Potency of Animal Allergens? Clin Rev Allergy Immunol 2021; 62:1-36. [DOI: 10.1007/s12016-020-08826-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/09/2020] [Indexed: 12/31/2022]
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Zhu J, Garrigues L, Van den Toorn H, Stahl B, Heck AJR. Discovery and Quantification of Nonhuman Proteins in Human Milk. J Proteome Res 2019; 18:225-238. [PMID: 30489082 PMCID: PMC6326037 DOI: 10.1021/acs.jproteome.8b00550] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Indexed: 01/11/2023]
Abstract
The question whether and which nonhuman peptides or proteins are present in human milk was raised many decades ago. However, due to cross-reactivity or nonspecific antibody recognition, the accuracy of detection by immunochemical methods has been a concern. Additionally, the relative low-abundance of nonhuman peptides/proteins in the complex milk sample makes them a challenging target to detect. Here, by deep proteome profiling, we detected several nonhuman peptides, which could be grouped as nonhuman proteins. We next estimated their concentration in human milk by combining data-dependent shotgun proteomics and parallel reaction monitoring. First, we fractionated human milk at the protein level and were able to detect 1577 human proteins. Additionally, we identified 109 nonhuman peptides, of which 71 were grouped into 36 nonhuman proteins. In the next step, we targeted 37 nonhuman peptides and nine of them could be repeatedly quantified in human milk samples. Peptides/proteins originating from bovine milk products were the dominant nonhuman proteins observed, notably bovine caseins (α-S1-, α-S2-, β-, κ-caseins) and β-lactoglobulin. The method we present here can be expanded to investigate more about nonhuman peptides and proteins in human milk and give a better understanding of how human milk plays a role in allergy prevention.
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Affiliation(s)
- Jing Zhu
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584
CH Utrecht, The Netherlands
- Netherlands
Proteomics Center, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Luc Garrigues
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584
CH Utrecht, The Netherlands
- Netherlands
Proteomics Center, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Henk Van den Toorn
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584
CH Utrecht, The Netherlands
- Netherlands
Proteomics Center, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Bernd Stahl
- Danone
Nutricia Research, 3584
CT Utrecht, The Netherlands
| | - Albert J. R. Heck
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, University of Utrecht, Padualaan 8, 3584
CH Utrecht, The Netherlands
- Netherlands
Proteomics Center, Padualaan
8, 3584 CH Utrecht, The Netherlands
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7
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Villa C, Costa J, Oliveira MBP, Mafra I. Bovine Milk Allergens: A Comprehensive Review. Compr Rev Food Sci Food Saf 2017; 17:137-164. [DOI: 10.1111/1541-4337.12318] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Revised: 10/09/2017] [Accepted: 10/11/2017] [Indexed: 12/21/2022]
Affiliation(s)
- Caterina Villa
- REQUIMTE-LAQV, Faculdade de Farmácia; Univ. do Porto; Porto Portugal
| | - Joana Costa
- REQUIMTE-LAQV, Faculdade de Farmácia; Univ. do Porto; Porto Portugal
| | | | - Isabel Mafra
- REQUIMTE-LAQV, Faculdade de Farmácia; Univ. do Porto; Porto Portugal
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Zhuang Y, Durrani S, Hodges BDM, Dreskin SC, Chen X. Expression of recombinant Ara h 6 in Pichia pastoris but not in Escherichia coli preserves allergic effector function and allows assessment of specific mutations. Mol Nutr Food Res 2012; 56:986-95. [PMID: 22707273 DOI: 10.1002/mnfr.201100827] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
SCOPE Ara h 6 has recently been recognized as an important peanut allergen. Recombinant allergens have been used for analysis of IgE binding, but have not been used to analyze the allergic effector activity that is more relevant to allergic reactions. METHODS AND RESULTS Ara h 6 was expressed as a recombinant protein in both Escherichia coli and Pichia pastoris (rAra h 6-E. coli and rAra h 6-Pichia, respectively). Effector activity was assayed by measuring degranulation of RBL SX-38 cells sensitized with IgE from patients with severe peanut allergy. Compared to native Ara h 6 (nAra h 6), rAra h 6-Pichia had intact effector function whereas rAra h 6-E. coli had significantly reduced function. The lower effector activity in rAra h 6-E. coli compared to nAra h 6 and rAra h 6-Pichia did not appear to be due to differences in posttranslational modifications (analyzed by mass spectrometry and staining for carbohydrates) and may be due to subtle alteration(s) of folding seen on CD analysis and on nonreduced gels. Finally, we introduced point mutations in four important IgE-binding linear epitopes of Ara h 6 and found dramatically reduced allergic effector activity. CONCLUSION Our studies demonstrate the utility of fully functional rAra h 6-Pichia as a starting point for analysis of specific mutations that adversely affect allergic effector function.
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Affiliation(s)
- Yonghua Zhuang
- Department of Medicine, Division of Allergy and Clinical Immunology, University of Colorado Denver, Aurora, CO 80045, USA
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Bernard H, Ah-Leung S, Tilleul S, Drumare MF, Paty E, Bidat E, Wal JM, Hazebrouck S. Specificity of IgE antibodies from patients allergic to goat's milk and tolerant to cow's milk determined with plasmin-derived peptides of bovine and caprine β-caseins. Mol Nutr Food Res 2012; 56:1532-40. [DOI: 10.1002/mnfr.201200229] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Revised: 07/09/2012] [Accepted: 07/10/2012] [Indexed: 11/11/2022]
Affiliation(s)
- Hervé Bernard
- INRA, UR 496; Unité d'Immuno-Allergie Alimentaire; CEA/iBiTeC-S/SPI; CEA de Saclay; Gif-sur-Yvette France
| | - Sandrine Ah-Leung
- INRA, UR 496; Unité d'Immuno-Allergie Alimentaire; CEA/iBiTeC-S/SPI; CEA de Saclay; Gif-sur-Yvette France
| | - Sylvain Tilleul
- INRA, UR 496; Unité d'Immuno-Allergie Alimentaire; CEA/iBiTeC-S/SPI; CEA de Saclay; Gif-sur-Yvette France
| | - Marie-Françoise Drumare
- INRA, UR 496; Unité d'Immuno-Allergie Alimentaire; CEA/iBiTeC-S/SPI; CEA de Saclay; Gif-sur-Yvette France
| | - Evelyne Paty
- Université Paris Descartes, Assistance Publique des Hôpitaux de Paris; Hôpital Necker Enfants Malades; Paris France
| | - Etienne Bidat
- Service de Pédiatrie; Assistance Publique des Hôpitaux de Paris; Hôpital Ambroise Paré; Boulogne France
| | - Jean-Michel Wal
- INRA, UR 496; Unité d'Immuno-Allergie Alimentaire; CEA/iBiTeC-S/SPI; CEA de Saclay; Gif-sur-Yvette France
| | - Stéphane Hazebrouck
- INRA, UR 496; Unité d'Immuno-Allergie Alimentaire; CEA/iBiTeC-S/SPI; CEA de Saclay; Gif-sur-Yvette France
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10
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Järvinen KM, Geller L, Bencharitiwong R, Sampson HA. Presence of functional, autoreactive human milk-specific IgE in infants with cow's milk allergy. Clin Exp Allergy 2011; 42:238-47. [PMID: 22092935 DOI: 10.1111/j.1365-2222.2011.03864.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2010] [Revised: 06/30/2011] [Accepted: 08/04/2011] [Indexed: 11/29/2022]
Abstract
BACKGROUND Occasionally, exclusively breastfed infants with cow's milk allergy (CMA) remain symptomatic despite strict maternal milk avoidance. OBJECTIVE To determine whether or not persistence of symptoms could be due to sensitization against endogenous human milk proteins with a high degree of similarity to bovine allergens. METHODS Ten peptides representing known bovine milk IgE-binding epitopes [α-lactalbumin (ALA), β- and κ-casein] and the corresponding, highly homologous human milk peptides were labelled with sera from 15 breastfed infants with CMA, aged 3 weeks to 12 months, and peptide (epitope)-specific IgE antibodies were assessed. Nine of the 15 breastfed infants became asymptomatic during strict maternal avoidance of milk and other major food allergens; six infants remained symptomatic until weaned. Ten older children, aged 5-15 years, with CMA were also assessed. The functional capacity of specific IgE antibodies was assessed by measuring β-hexosaminidase release from rat basophilic leukaemia cells passively sensitized and stimulated with human and bovine ALA. RESULTS A minimum of one human milk peptide was recognized by IgE antibodies from 9 of 15 (60%) milk-allergic infants, and the majority of older children with CMA. Genuine sensitization to human milk peptides in the absence of IgE to bovine milk was occasionally seen. There was a trend towards specific IgE being detected to more human milk peptides in those infants who did not respond to the maternal milk elimination diet than in those who did (P = 0.099). Functional IgE antibody to human ALA was only detected in infants not responding to the maternal diet. CONCLUSIONS AND CLINICAL RELEVANCE Endogenous human milk epitopes are recognized by specific IgE from the majority of infants and children with CMA. Such autoreactive, human milk-specific IgE antibodies appear to have functional properties in vitro. Their role in provoking allergic symptoms in infants exclusively breastfed by mothers strictly avoiding dietary milk remains unclear.
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Affiliation(s)
- K M Järvinen
- Division of Pediatric Allergy & Immunology, The Mount Sinai School of Medicine, New York, NY 10029-6574, USA.
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Antoniou A, Herlem G, André C, Guillaume Y, Gharbi T. Simple method for detection of extremely diluted anti beta-casein antibodies from glass bead based receptors. Talanta 2011; 84:632-7. [DOI: 10.1016/j.talanta.2011.01.038] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Revised: 01/09/2011] [Accepted: 01/16/2011] [Indexed: 10/18/2022]
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12
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Yousefi R, Gaudin JC, Chobert JM, Pourpak Z, Moin M, Moosavi-Movahedi AA, Haertle T. Micellisation and immunoreactivities of dimeric β-caseins. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2009; 1794:1775-83. [DOI: 10.1016/j.bbapap.2009.08.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2009] [Revised: 07/26/2009] [Accepted: 08/13/2009] [Indexed: 11/28/2022]
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Mammalian milk allergy: clinical suspicion, cross-reactivities and diagnosis. Curr Opin Allergy Clin Immunol 2009; 9:251-8. [DOI: 10.1097/aci.0b013e32832b3f33] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Gaudin JC, Rabesona H, Choiset Y, Yeretssian G, Chobert JM, Sakanyan V, Drouet M, Haertlé T. Assessment of the immunoglobulin E-mediated immune response to milk-specific proteins in allergic patients using microarrays. Clin Exp Allergy 2008; 38:686-93. [PMID: 18307527 DOI: 10.1111/j.1365-2222.2008.02952.x] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Cow's milk allergy (CMA) is one of the most widespread human allergies, especially in young children. Although CMA is intensively studied, little is known about the recognition patterns of milk allergens in allergic patients, and the determination these patterns is a prerequisite for the development of efficient diagnostic and prognostic tools. Several factors present difficulties for such a determination, because (i) milk contains a large number of potential allergens; (ii) the majority of these allergens consist of complex suspensions rather than solutions; (iii) the major allergens, such as caseins, cannot be highly purified in large amounts; and (iv) most of the time, very small amount of young patients' sera are readily available. METHODS To overcome these difficulties, we developed a sensitive microarray assay that, in combination with near-infrared fluorescence detection, was used to study the immune response to milk and purified native milk proteins. RESULTS This new assay allowed us to assess the binding ability of IgE to milk allergens from a large number of young patients using reduced amounts of clinical material. The data show that bovine lactoferrin can be classed as a strong milk allergen. We confirmed that bovine caseins are the main allergens in milk and that alpha(S1)-casein is more allergenic than alpha(S2)-, beta- and kappa-caseins, which were recognized with almost a similar frequency by the sera of patients. CONCLUSION Microarray methods, in combination with near-infrared fluorescence detection, can be useful for the in vitro diagnosis of food allergies.
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Affiliation(s)
- J-C Gaudin
- UR 1268 Biopolymères Interactions Assemblages, INRA, Nantes, France
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16
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Han N, Järvinen KM, Cocco RR, Busse PJ, Sampson HA, Beyer K. Identification of amino acids critical for IgE-binding to sequential epitopes of bovine kappa-casein and the similarity of these epitopes to the corresponding human kappa-casein sequence. Allergy 2008; 63:198-204. [PMID: 18186809 DOI: 10.1111/j.1398-9995.2007.01539.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND The delineation of allergenic (i.e. IgE-binding) epitopes in cow's milk proteins and the amino acids (AAs) critical for IgE-binding is necessary to understand better the structural properties of an allergen and to develop more efficacious immunotherapeutic reagents. Furthermore, this information may enable us to understand better cross-sensitivity between different allergens. METHODS Eleven peptides, 10-14 AAs in length, representing the IgE-binding epitopes of kappa-casein were synthesized on a derivatized cellulose membrane with single AA substitutions at each position. Membranes were incubated with pooled sera from 15 milk-allergic patients and individual sera from 10 of the patients included in the pool. RESULTS For 10/11 allergenic peptides, one to five different single AA substitutions resulted in elimination of IgE-binding of pooled patient sera. Overall at least one mutated peptide could be found for these 10 IgE-binding sites that resulted in a reduction of IgE-binding in at least 80% of the patients who recognized the native protein. Furthermore, the IgE-binding region at AA104-112 on bovine kappa-casein showed a high degree of similarity with the human kappa-casein, respectively, including the AAs critical for IgE-binding. CONCLUSION This finding suggests that critical AAs should be assessed with both pooled and individual patient sera to account for the B-cell epitope heterogeneity between patients, with cow's milk allergy. In addition, we identified two potentially cross-reactive peptides between bovine and human caseins of unknown clinical relevance.
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Affiliation(s)
- N Han
- Division of Pediatric Allergy & Immunology, Jaffe Institute for Food Allergy, The Mount Sinai School of Medicine, New York, NY 10029-6574, USA
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Schulmeister U, Swoboda I, Quirce S, de la Hoz B, Ollert M, Pauli G, Valenta R, Spitzauer S. Sensitization to human milk. Clin Exp Allergy 2007; 38:60-8. [PMID: 17970780 DOI: 10.1111/j.1365-2222.2007.02860.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Allergy to milk is one of the earliest manifestations of IgE-mediated allergies and affects about 2.5% of newborn children. Several reports indicate that milk-allergic patients may be sensitized also to human milk proteins. OBJECTIVE To analyse the specificity and possible biological relevance of IgE reactivity to human milk antigens in milk-allergic patients. METHODS The specificity of IgE reactivity to cow's milk and human milk antigens was analysed with sera from milk-allergic children and adults by IgE immunoblotting. IgE cross-reactivity between milk antigens was studied by immunoblot inhibition experiments. That IgE reactivity to human milk antigens is not due to alloreactivity or due to the transmission of foreign antigens into mother's milk was demonstrated through the analysis of milk samples from genetically unrelated mothers before and after intake of dietary milk products. The biological relevance of IgE reactivity to human milk was confirmed by skin testing. Results IgE antibodies to human milk were found in more than 80% of the tested milk-allergic patients. Cross-reactive IgE-reactive human antigens such as alpha-lactalbumin and non-cross-reactive human milk antigens were identified. Immediate-type skin reactions could be elicited with human milk samples in patients with IgE reactivity to human milk. CONCLUSION IgE reactivity to human milk in milk-allergic patients can be due to cross- sensitization and genuine sensitization to human milk and may cause allergic symptoms. IgE-mediated sensitization to human milk is common in milk-allergic patients and may require diagnostic testing and monitoring.
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Affiliation(s)
- U Schulmeister
- Institute of Clinical and Medical Laboratory Diagnostics, Medical University of Vienna, Vienna, Austria
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Kitazawa H, Yonezawa K, Tohno M, Shimosato T, Kawai Y, Saito T, Wang JM. Enzymatic digestion of the milk protein beta-casein releases potent chemotactic peptide(s) for monocytes and macrophages. Int Immunopharmacol 2007; 7:1150-9. [PMID: 17630193 PMCID: PMC3205927 DOI: 10.1016/j.intimp.2007.04.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2007] [Revised: 04/17/2007] [Accepted: 04/23/2007] [Indexed: 12/29/2022]
Abstract
Proteins in the milk release biologically active peptides upon enzymatic digestion. In the present study, we report the identification of novel monocyte/macrophage chemotactic peptides derived from enzymatically digested bovine beta-casein, a casein family member that is a major constituent of milk. Beta-casein fragments generated by actinase E showed potent chemotactic activity for human and mouse monocytes/macrophages, but not neutrophils, T lymphocytes or dendritic cells. The fragment-induced migration of human monocytes was inhibited by pertussis toxin and was not desensitized by a variety of known chemoattractants, suggesting that the digests activate a unique G protein-coupled receptor(s). The digests were further fractionated and purified to yield 3 small peptides. One peptide Q1 designated as "beta-casochemotide-1" with the amino acid sequence of YPVEP (f114-118 of beta-casein) induced high levels of macrophage chemotaxis. It also promoted calcium mobilization in macrophages, another indication of cell activation. Our study suggests that biologically active peptides released by actinase-digested milk beta-casein may promote innate host immune responses by inducing macrophage migration and activation.
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Affiliation(s)
- Haruki Kitazawa
- Laboratory of Molecular Immunoregulation, Center for Cancer Research, National Cancer Institute at Frederick, National Institutes of Health, Frederick, USA
- Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Aobaku, Sendai, Japan
| | - Kumiko Yonezawa
- Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Aobaku, Sendai, Japan
| | - Masanori Tohno
- Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Aobaku, Sendai, Japan
| | - Takeshi Shimosato
- Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Aobaku, Sendai, Japan
| | - Yasushi Kawai
- Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Aobaku, Sendai, Japan
| | - Tadao Saito
- Laboratory of Animal Products Chemistry, Graduate School of Agricultural Science, Tohoku University, Aobaku, Sendai, Japan
| | - Ji Ming Wang
- Laboratory of Molecular Immunoregulation, Center for Cancer Research, National Cancer Institute at Frederick, National Institutes of Health, Frederick, USA
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Crameri R, Rhyner C. Impact of native, recombinant, and cross-reactive allergens on humoral and T-cell-mediated immune responses. Immunol Allergy Clin North Am 2007; 27:65-78. [PMID: 17276879 DOI: 10.1016/j.iac.2006.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Many native allergens have been purified to homogeneity from natural sources, and whole arrays of recombinant and cross-reactive allergens have been produced in large amounts as biologically active molecules. These allergens offer potent research tools to investigate humoral and T cell-mediated immune responses to allergens in healthy and allergic individuals, providing methods for verifying the responses in a reproducible and dose-dependent manner. Dissecting the immune responses to allergens at cellular and molecular levels provides models for studying the different aspects of T-cell activation and the development of immunologic memory and effector functions. A deep understanding of these mechanisms will fundamentally change the current practice of allergy diagnosis, treatment, and prevention.
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Affiliation(s)
- Reto Crameri
- Division of Molecular Allergology, Swiss Institute of Allergy and Asthma Research (SIAF), Obere Strasse 22, CH-7270 Davos, Switzerland.
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Ferreira IMPLVO. Chromatographic Separation and Quantification of Major Human Milk Proteins. J LIQ CHROMATOGR R T 2007. [DOI: 10.1080/10826070601093796] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Goodman RE, Hefle SL, Taylor SL, van Ree R. Assessing Genetically Modified Crops to Minimize the Risk of Increased Food Allergy: A Review. Int Arch Allergy Immunol 2005; 137:153-66. [PMID: 15947471 DOI: 10.1159/000086314] [Citation(s) in RCA: 78] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The first genetically modified (GM) crops approved for food use (tomato and soybean) were evaluated for safety by the United States Food and Drug Administration prior to commercial production. Among other factors, those products and all additional GM crops that have been grown commercially have been evaluated for potential increases in allergenic properties using methods that are consistent with the current understanding of food allergens and knowledge regarding the prediction of allergenic activity. Although there have been refinements, the key aspects of the evaluation have not changed. The allergenic properties of the gene donor and the host (recipient) organisms are considered in determining the appropriate testing strategy. The amino acid sequence of the encoded protein is compared to all known allergens to determine whether the protein is a known allergen or is sufficiently similar to any known allergen to indicate an increased probability of allergic cross-reactivity. Stability of the protein in the presence of acid with the stomach protease pepsin is tested as a risk factor for food allergenicity. In vitro or in vivo human IgE binding are tested when appropriate, if the gene donor is an allergen or the sequence of the protein is similar to an allergen. Serum donors and skin test subjects are selected based on their proven allergic responses to the gene donor or to material containing the allergen that was matched in sequence. While some scientists and regulators have suggested using animal models, performing broadly targeted serum IgE testing or extensive pre- or post-market clinical tests, current evidence does not support these tests as being predictive or practical. Based on the evidence to date, the current assessment process has worked well to prevent the unintended introduction of allergens in commercial GM crops.
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Affiliation(s)
- Richard E Goodman
- Food Allergy Research and Resource Program, University of Nebraska, Lincoln, NE 68583-0955, USA.
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Abstract
OBJECTIVE To provide updated data on the characteristics (eg, structure, function, stability) of the main milk proteins identified as allergens and on the characterization of their epitopes. DATA SOURCES Basic literature and the most relevant original recent publications on clinical and epidemiologic aspects of milk allergy and the biochemistry and immunochemistry of milk proteins. STUDY SELECTION The expert opinion of the author was used to select the relevant data for the review. RESULTS Most milk proteins, even proteins present at low concentrations, are potential allergens. Epitopes on milk proteins are both conformational and linear epitopes, widely spread throughout the protein molecules. They may be short fragments, located in hydrophobic parts of the molecule, that comprise highly conserved sequences responsible for IgE cross-reactivity with corresponding milk proteins of other mammals, including humans. Those sequential epitopes have also been proposed as good markers of persistent allergy to milk proteins and may be of particular clinical significance. CONCLUSIONS No specific structure or function is associated with allergenicity of milk proteins. Due to the great variability and heterogeneity of the human IgE response, no single allergen or particular structure can account for a major part of milk allergenicity. Furthermore, the available evidence is not sufficient to establish an intake threshold below which allergic reactions are not triggered or to predict reliably the effect of food processing on allergenic potential of milk proteins.
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Affiliation(s)
- Jean-Michel Wal
- Laboratoire d'Immuno-Allergie Alimentaire, Service de Pharmacologie et d'Immunologie, Gif sur Yvette, France.
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Opinion of the Scientific Panel on Dietetic products, nutrition and allergies [NDA] on a request from the Commission relating to the evaluation of allergenic foods for labelling purposes. EFSA J 2004. [DOI: 10.2903/j.efsa.2004.32] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Abstract
OBJECTIVE The primary objective of this review is to provide updated data on the structure and function of the main cow's milk proteins (CMPs) identified as allergens and on the characterization of their epitopes. DATA SOURCES The review represents a synthesis of basic literature and most relevant original recent publications on both topics of clinical and epidemiologic aspects of milk allergy and of milk protein's bio- and immunochemistry. STUDY SELECTION The expert opinion of the author was used to select the relevant data for the review. RESULTS Most CMPs are potential allergens, even the proteins present at very low concentration. There are both conformational and linear epitopes, widely spread all along the protein molecules. They may be short fragments, located in hydrophobic parts of the molecule which comprise highly conserved sequences responsible for immunoglobulin E cross-reactivity with corresponding milk proteins of other mammals, including human beings. Those sequential epitopes have also been proposed as good markers of persistent allergy to CMPs. CONCLUSIONS No specific structure nor function is associated with allergenicity of CMPs. Variability and heterogeneity of the human immunoglobulin E response preclude anticipating the allergenic potential of any CMP or fragment thereof, as well as justify the need for being careful before using peptides for desensitization or proposing any milk protein hydrolysate in a diet for highly allergenic children.
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Affiliation(s)
- Jean-Michel Wal
- Laboratoire d'Immuno-Allergie Alimentaire, Service de Pharmacologie et d'Immunologie, INRA-CEA, CEA de Saclay, Gif sur Yvette, France.
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Schach B, Haight M. Colic and food allergy in the breastfed infant: is it possible for an exclusively breastfed infant to suffer from food allergy? J Hum Lact 2002; 18:50-2. [PMID: 11845737 DOI: 10.1177/089033440201800108] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Barbra Schach
- Department of Pediatrics, University of California, Davis Medical Center, 2516 Stockton Boulevard, Ticon II, Sacramento, CA 95817, USA
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Affiliation(s)
- B M Exl
- Department of Nutrition, Nestlé Suisse SA, Vevey, Switzerland.
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Abstract
The cross-reactivity of IgE antibodies is of interest for various reasons, three of which are discussed. Firstly, from the clinical view, it is important to know the patterns of cross-reactivity, because they often (but not always) reflect the pattern of clinical sensitivities. We discuss the cross-reactivities associated with sensitization to pollen and vegetable foods: PR-10 (Bet v 1-related), profilin, the cross-reactive carbohydrate determinant (CCD), the recently described isoflavone reductase, and the (still elusive) mugwort allergen that is associated with celery anaphylaxis; cross-reactivities between allergens from invertebrates, particularly tropomyosin, paramyosin, and glutathione S-transferase (GST); and latex-associated cross-reactivities. Clustering cross-reactive allergens may simplify diagnostic procedures and therapeutic regimens. Secondly, IgE cross-reactivity is of interest for its immunologic basis, particularly in relation to the regulation of allergic sensitization: are IgE antibodies to allergens more often cross-reactive than IgG antibodies to "normal" antigens? If so, why? For this discussion, it is relevant to compare not only the structural relation between the two allergens in question, but also the relatedness to the human equivalent (if any) and how the latter influences the immune repertoire. Thirdly, prediction of IgE cross-reactivity is of interest in relation to allergic reactivity to novel foods. Cross-reactivity is a property defined by individual antibodies to individual allergens. Quantitative information (including relative affinity) is required on cross-reactivity in the allergic population and with specific allergens (rather than with whole extracts). Such information is still scarce, but with the increasing availability of purified (usually recombinant) allergens, such quantitative information will soon start to accumulate. It is expected that similarity in short stretches of the linear amino-acid sequence is unlikely to result in relevant cross-reactivity between two proteins unless there is similarity in the protein fold.
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Affiliation(s)
- R C Aalberse
- CLB and Laboratory for Experimental and Clinical Immunology, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
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