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Masthoff, L.J.N. (author), Blom, W.M. (author), Rubingh, C.M. (author), Klemans, R.J.B. (author), Remington, B.C. (author), Bruijnzeel-Koomen, C.A.F.M. (author), van Hoffen, E. (author), Houben, G.F. (author), Meyer, Y. (author), Pasmans, S.G.M.A. (author), Knulst, A.C. (author)[No abstract available] Chemicals / CAS immunoglobulin E, 37341-29-0; Allergens; Antigens, Plant; Cor a 14 allergen, hazelnut; Cor a 9 protein, hazelnut; Immunoglobulin E; Plant Proteins.article 2018
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Chen, Y. (author), Sun, A. (author), Wang, M. (author), Zhu, Z. (author), Ouwerkerk, P.B.F. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Glutelins are the most abundant storage proteins in rice grain and can make up to 80 % of total protein content. The promoter region of GluB-1, one of the glutelin genes in rice, has been intensively used as a model to understand regulation of seed-storage protein accumulation. In this study, we describe a zinc finger gene of the Cys3His1 (CCCH...article 2014
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Martin, A.H. (author), Nieuwland, M. (author), de Jong, G.A.H. (author)To anticipate a future shortage in functional proteins, it is important to study the functionality of new alternative protein sources. Native RuBisCO was extracted from spinach, and its gelation behavior was compared to other native proteins from animal and plant origins. Protein gels were analyzed for their mechanical gel properties during...article 2014
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Madsen, C.B. (author), Hattersley, S. (author), Buck, J. (author), Gendel, S.M. (author), Houben, G.F. (author), Hourihane, J.OB. (author), Mackie, A. (author), Mills, E.N.C. (author), Nørhede, P. (author), Taylor, S.L. (author), Crevel, R.W.R. (author), TNO Kwaliteit van Leven (author)A workshop was organised to investigate whether risk assessment strategies and methodologies used in classical/conventional toxicology may be used for risk assessment of allergenic foods, to discuss the advantages and limitations of different approaches and to determine the research needed to move the area forward. Three possible approaches to...article 2009
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van Boxtel, E.L. (author), van den Broek, L.A.M. (author), Koppelman, S.J. (author), Gruppen, H. (author), TNO Kwaliteit van Leven (author)Legumin proteins Ara h 3 from peanuts and glycinin from soybeans are increasingly described as important allergens. The stability of an allergen's IgE binding capacity towards heating and digestion is considered an important characteristic for food allergens. We investigated the effects of heating and digestion on the IgE binding of Ara h 3 and...article 2008
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van Boxtel, E.L. (author), Koppelman, S.J. (author), van den Broek, L.A.M. (author), Gruppen, H. (author), TNO Kwaliteit van Leven (author), KvL (author)This study was aimed at the determination of the pepsin-susceptible and pepsin-resistant epitopes in native and heat-treated Ara h 1, a major allergen from peanuts. Both the oligomeric structure and the trimeric structure of the allergen were investigated. Under the in vitro conditions applied, oligomeric Ara h 1, either unheated or preheated,...article 2008
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Wang, Y. (author), Xiao, Y. (author), Zhang, Y. (author), Chai, C. (author), Wei, G. (author), Wei, X. (author), Xu, H. (author), Wang, M. (author), Ouwerkerk, P.B.F. (author), Zhu, Z. (author), TNO Kwaliteit van Leven (author)Monosaccharides transporters play important roles in assimilate supply for sink tissue development. In this study, a new monosaccharide transporter gene OsMST6 was identified from rice (Oryza sativa L.). The predicted OsMST6 protein shows typical features of sugar transporters and shares 79.6% identity with the rice monosaccharide transporter...article 2008
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Wang, Y. (author), Xu, H. (author), Wei, X. (author), Chai, C. (author), Xiao, Y. (author), Zhang, Y. (author), Chen, B. (author), Xiao, G. (author), Ouwerkerk, P.B.F. (author), Wang, M. (author), Zhu, Z. (author), TNO Kwaliteit van Leven (author)Monosaccharide transporters mediate the membrane transport of a variable range of monosaccharides, which plays a crucial role in sugar distribution throughout the plant. To investigate the significance of monosaccharide transporters for rice (Oryza sativa L.) seed development, cDNA of a new putative monosaccharide transporter gene OsMST4 was...article 2007
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van Boxtel, E.L. (author), van den Broek, L.A.M. (author), Koppelman, S.J. (author), Vincken, J.-P. (author), Gruppen, H. (author), TNO Kwaliteit van Leven (author)Mildly extracted peanut allergen Ara h 1 was previously reported to occur as an oligomeric complex. In this paper we describe how the protein in this oligomeric complex interacts noncovalently with phenolic compounds of the proanthocyanidin type. These interactions are being disrupted during anion exchange chromatography, resulting in the...article 2007
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Flinterman, A.E. (author), van Hoffen, E. (author), den Hartog Jager, C.F. (author), Koppelman, S. (author), Pasmans, S.G. (author), Hoekstra, M.O. (author), Bruijnzeel-Koomen, C.A. (author), Knulst, A.C. (author), Knol, E.F. (author), TNO Kwaliteit van Leven (author)Background: In peanut-allergic adults, IgE is mainly directed to Ara h1 and Ara h2. More recently, a role for Ara h6 has been suggested. In contrast to adults, IgE in children can fluctuate over time. Therefore, children may have a more dynamic reactivity to peanut. Objective: To examine the IgE reactivity to major peanut allergens in peanut...article 2007
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van Wijk, F. (author), Nierkens, S. (author), de Jong, W. (author), Wehrens, E.J.M. (author), Boon, L. (author), van Kooten, P. (author), Knippels, L.M.J. (author), Pieters, R. (author), TNO Kwaliteit van Leven (author)Dendritic cells are believed to play an essential role in regulating the balance between immunogenic and tolerogenic responses to mucosal Ags by controlling T cell differentiation and activation via costimulatory and coinhibitory signals. The CD28/CTLA-4-CD80/CD86 signaling pathway appears to be one of the most important regulators of T cell...article 2007
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Peeters, K.A.B.M. (author), Koppelman, S.J. (author), van Hoffen, E. (author), van der Tas, C.W.H. (author), den Hartog Jager, C.F. (author), Penninks, A.H. (author), Hefle, S.L. (author), Bruijnzeel-Koomen, C.A.F.M. (author), Knol, E.F. (author), Knulst, A.C. (author), TNO Kwaliteit van Leven (author)Background: Recognition of specific peanut allergens or the diversity of IgE binding to peanut allergens may play a role in the elicitation of severe allergic reactions. Objective: To investigate whether sensitization to individual allergens Ara h 1, Ara h 2, Ara h 3 and Ara h 6 is correlated with clinical severity. Methods: The reactivity of...article 2007
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Koppelman, S.J. (author), Vlooswijk, R. (author), Bottger, G. (author), van Duijn, G. (author), van der Schaft, P. (author), Dekker, J. (author), van Bemgen, H. (author), TNO Kwaliteit van Leven (author)An enzyme-linked immunosorbent assay for the detection of mustard protein was developed. The assay is based on a polyclonal antiserum directed against a mixture of mustard proteins raised in rabbits. The assay has a detection limit of 1.5 ppm (milligrams per kilogram) and is suitable for the detection of traces of mustard protein in mustard seed...article 2007
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TNO Kwaliteit van Leven (author), Guimarães, A.H.C. (author), Laurens, N. (author), Weijers, E.M. (author), Koolwijk, P. (author), van Hinsbergh, V.W.M. (author), Rijken, D.C. (author)OBJECTIVE - Besides having a key role in fibrinolysis, the plasminogen system has been implicated in cell migration and angiogenesis. A common mechanism is the binding of plasminogen to carboxy-terminal lysine residues in partially degraded fibrin or on cellular surfaces. Here we examined the involvement of thrombin activatable fibrinolysis...article 2007
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van Boxtel, E.L. (author), van Beers, M.M.C. (author), Koppelman, S.J. (author), van den Broek, L.A.M. (author), Gruppen, H. (author), TNO Kwaliteit van Leven (author)Ara h 1, a major peanut allergen, is known as a stable trimeric protein. Nevertheless, upon purification of native Ara h 1 from peanuts using only size exclusion chromatography, the allergen appeared to exist in an oligomeric structure, rather than as a trimeric structure. The oligomeric structure was independent of the salt concentration...article 2006
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van Boxtel, E.L. (author), van Koningsveld, G.A. (author), Koppelman, S.J. (author), van den Broek, L.A.M. (author), Voragen, A.G.J. (author), Gruppen, H. (author), TNO Kwaliteit van Leven (author)A new, fast, large-scale purification method for Ber e 1, the major allergen from Brazil nuts, using expanded bed adsorption (EBA) chromatography, is presented. Using EBA, crude extracts can be applied to a fluidized column, which allows the unhindered passage of particulate impurities, thereby avoiding time-consuming centrifugation or...article 2006
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Koppelman, S.J. (author), de Jong, G.A.H. (author), de Laaper-Ertmann, M. (author), Peeters, K.A.B.M. (author), Knulst, A.C. (author), Hefle, S.L. (author), Knol, E.F. (author), TNO Kwaliteit van Leven (author)Background: IgE-binding peanut proteins smaller than 15 kDa were previously identified as potential allergens in the majority of our peanut allergic population. Objective: To characterize the novel allergen in order to determine whether it was similar to one of the thus far identified recombinant peanut allergens (Ara h 1-7). Methods: An IgE...article 2005
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Hamer, R.J. (author), TNO Kwaliteit van Leven (author)Coeliac Disease has to be considered a main food related affliction, with life long consequences for the people having the disease. Coeliac Disease patients suffer from adverse effects that can be related to specific gluten peptide sequences that trigger a sequence of immune related reactions leading to damage of the intestine and related...article 2005
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van Wijk, F. (author), Nierkens, S. (author), Hassing, I. (author), Feijen, M. (author), Koppelman, S.J. (author), de Jong, G.A.H. (author), Pieters, R. (author), Knippels, L.M.J. (author), TNO Kwaliteit van Leven (author)There is little knowledge about the factors that determine the allergenicity of food proteins. One aspect that remains to be elucidated is the effect of the food matrix on immune responses to food proteins. To study the intrinsic immunogenicity of allergens and the influence of the food matrix, purified peanut allergens (Ara h 1, Ara h 2, Ara h...article 2005
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Koppelman, S.J. (author), Nieuwenhuizen, W.F. (author), Gaspari, M. (author), Knippels, L.M.J. (author), Penninks, A.H. (author), Knol, E.F. (author), Hefle, S.L. (author), de Jongh, H.H.J. (author), TNO Kwaliteit van Leven (author)The high resistance of Brazil nut 2S albumin, previously identified as an allergen, against proteolysis by pepsin was examined in this work. Although the denaturation temperature of this protein exceeds the 110 °C at neutral pH, at low pH a fully reversible thermal denaturation was observed at ∼82 °C. The poor digestibility of the protein by...article 2005