Identification of novel antibody-reactive detection sites for comprehensive gluten monitoring.

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  • Additional Information
    • Source:
      Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
    • Publication Information:
      Original Publication: San Francisco, CA : Public Library of Science
    • Subject Terms:
      Diet, Gluten-Free*; Antibodies/*chemistry ; Celiac Disease/*immunology ; Glutens/*immunology; Amino Acid Motifs ; Animals ; Antibodies, Monoclonal/chemistry ; B-Lymphocytes/cytology ; Edible Grain/chemistry ; Epitopes/chemistry ; Female ; Gliadin/chemistry ; Glutens/chemistry ; Immunoglobulin G/chemistry ; Mice ; Oligonucleotide Array Sequence Analysis ; Triticum/chemistry
    • Abstract:
      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.
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    • Accession Number:
      0 (Antibodies)
      0 (Antibodies, Monoclonal)
      0 (Epitopes)
      0 (Immunoglobulin G)
      8002-80-0 (Glutens)
      9007-90-3 (Gliadin)
    • Publication Date:
      Date Created: 20170801 Date Completed: 20171017 Latest Revision: 20240326
    • Publication Date:
      20240326
    • Accession Number:
      PMC5536345
    • Accession Number:
      10.1371/journal.pone.0181566
    • Accession Number:
      28759621