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Production of anti-idiotype antibodies for deoxynivalenol and their evaluation with three immunoassay platforms
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  • 作者:C. M. Maragos (1)
  • 关键词:Deoxynivalenol ; Antibody ; Immunoassay ; Biosensor ; Fluorescence polarization
  • 刊名:Mycotoxin Research
  • 出版年:2014
  • 出版时间:May 2014
  • 年:2014
  • 卷:30
  • 期:2
  • 页码:103-111
  • 全文大小:622 KB
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    14. Maragos CM (2012) Signal amplification using colloidal gold in a biolayer interferometry-based immunosensor for the mycotoxin deoxynivalenol. Food Addit Contam A 29:1108-117. doi:10.1080/19440049.2012.671789 CrossRef
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  • 作者单位:C. M. Maragos (1)

    1. Bacterial Foodborne Pathogens & Mycology Research Unit, National Center for Agricultural Utilization Research, ARS, USDA, 1815 N. University Street, Peoria, IL, 61604, USA
  • ISSN:1867-1632
文摘
Immunoassays for deoxynivalenol (DON) that involve binding to DON-specific antibodies have been widely developed. In such assays, the responses of samples are generally compared with calibration curves generated by using DON in competition with labeled reagents such as enzymatic or fluorescent conjugates of the toxin. However, materials that mimic the toxin can also be used, provided that they compete effectively with the labeled reagents for the DON-specific antibodies. Examples include certain types of anti-idiotype antibodies, obtained by the immunization of animals with toxin-specific antibodies. In the present work, anti-idiotype antibodies were developed which mimicked DON in the ability to bind to a DON-specific monoclonal antibody (Mab). Fab fragments of the Mab (Ab1) were used to immunize rabbits. Sera were screened by competitive direct enzyme linked immunosorbent assay (CD-ELISA) for the presence of anti-idiotype antibodies (Ab2). In order to determine the most effective screening format and also the potential efficacy in various forms of biosensors, the sera were further evaluated in biolayer interferometry (BLI) and fluorescence polarization immunoassay (FPIA) formats. All three formats were used to demonstrate the presence of anti-idiotypes capable of binding to the paratope of the DON antibody (subtypes Ab2β or Ab2γ). Such materials have the potential to replace DON as calibrants in immunoassays for this toxin.

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