Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring.
Certain cereals like wheat, rye or barley contain gluten, a protein mixture that can trigger celiac disease (CD). To make gluten-free diets available for affected individuals the gluten content of foodstuff must be monitored. For this purpose, antibody-based assays exist which rely on the recognitio...
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doaj-6e84fb1fbad14e219ea819ca7e6ee7362020-11-24T22:05:31ZengPublic Library of Science (PLoS)PLoS ONE1932-62032017-01-01127e018156610.1371/journal.pone.0181566Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring.Niels RöckendorfBarbara MeckeleinKatharina A ScherfKathrin SchalkPeter KoehlerAndreas FreyCertain cereals like wheat, rye or barley contain gluten, a protein mixture that can trigger celiac disease (CD). To make gluten-free diets available for affected individuals the gluten content of foodstuff must be monitored. For this purpose, antibody-based assays exist which rely on the recognition of certain linear gluten sequence motifs. Yet, not all CD-active gluten constituents and fragments formed during food processing/fermentation may be covered by those tests. In this study, we therefore assayed the coverage of reportedly CD-active gluten components by currently available detection antibodies and determined the antibody-inducing capacity of wheat gluten constituents in order to provide novel diagnostic targets for comprehensive gluten quantitation. Immunizations of outbred mice with purified gliadins and glutenins were conducted and the linear target recognition profile of the sera was recorded using synthetic peptide arrays that covered the sequence space of gluten constituents present in those preparations. The resulting murine immunorecognition profile of gluten demonstrated that further linear binding sites beyond those recognized by the monoclonal antibodies α20, R5 and G12 exist and may be exploitable as diagnostic targets. We conclude that the safety of foodstuffs for CD patients can be further improved by complementing current tests with antibodies directed against additional CD-active gluten components. Currently unrepresented linear gluten detection sites in glutenins and α-gliadins suggest sequences QQQYPS, PQQSFP, QPGQGQQG and QQPPFS as novel targets for antibody generation.http://europepmc.org/articles/PMC5536345?pdf=render |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Niels Röckendorf Barbara Meckelein Katharina A Scherf Kathrin Schalk Peter Koehler Andreas Frey |
spellingShingle |
Niels Röckendorf Barbara Meckelein Katharina A Scherf Kathrin Schalk Peter Koehler Andreas Frey Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring. PLoS ONE |
author_facet |
Niels Röckendorf Barbara Meckelein Katharina A Scherf Kathrin Schalk Peter Koehler Andreas Frey |
author_sort |
Niels Röckendorf |
title |
Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring. |
title_short |
Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring. |
title_full |
Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring. |
title_fullStr |
Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring. |
title_full_unstemmed |
Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring. |
title_sort |
identification of novel antibody-reactive detection sites for comprehensive gluten monitoring. |
publisher |
Public Library of Science (PLoS) |
series |
PLoS ONE |
issn |
1932-6203 |
publishDate |
2017-01-01 |
description |
Certain cereals like wheat, rye or barley contain gluten, a protein mixture that can trigger celiac disease (CD). To make gluten-free diets available for affected individuals the gluten content of foodstuff must be monitored. For this purpose, antibody-based assays exist which rely on the recognition of certain linear gluten sequence motifs. Yet, not all CD-active gluten constituents and fragments formed during food processing/fermentation may be covered by those tests. In this study, we therefore assayed the coverage of reportedly CD-active gluten components by currently available detection antibodies and determined the antibody-inducing capacity of wheat gluten constituents in order to provide novel diagnostic targets for comprehensive gluten quantitation. Immunizations of outbred mice with purified gliadins and glutenins were conducted and the linear target recognition profile of the sera was recorded using synthetic peptide arrays that covered the sequence space of gluten constituents present in those preparations. The resulting murine immunorecognition profile of gluten demonstrated that further linear binding sites beyond those recognized by the monoclonal antibodies α20, R5 and G12 exist and may be exploitable as diagnostic targets. We conclude that the safety of foodstuffs for CD patients can be further improved by complementing current tests with antibodies directed against additional CD-active gluten components. Currently unrepresented linear gluten detection sites in glutenins and α-gliadins suggest sequences QQQYPS, PQQSFP, QPGQGQQG and QQPPFS as novel targets for antibody generation. |
url |
http://europepmc.org/articles/PMC5536345?pdf=render |
work_keys_str_mv |
AT nielsrockendorf identificationofnovelantibodyreactivedetectionsitesforcomprehensiveglutenmonitoring AT barbarameckelein identificationofnovelantibodyreactivedetectionsitesforcomprehensiveglutenmonitoring AT katharinaascherf identificationofnovelantibodyreactivedetectionsitesforcomprehensiveglutenmonitoring AT kathrinschalk identificationofnovelantibodyreactivedetectionsitesforcomprehensiveglutenmonitoring AT peterkoehler identificationofnovelantibodyreactivedetectionsitesforcomprehensiveglutenmonitoring AT andreasfrey identificationofnovelantibodyreactivedetectionsitesforcomprehensiveglutenmonitoring |
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