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  • Title: Platform switching from ELISA to Gyrolab™: a novel generic reagent omits the need to change critical reagents.
    Author: Jordan G, Moheysen-Zadeh M, Heinrich J, Staack RF.
    Journal: Bioanalysis; 2016 Apr; 8(8):807-14. PubMed ID: 26975340.
    Abstract:
    During development of biotherapeutics, availability of specific assay reagents is usually limited. The possibility to switch from one ligand binding assay technology to another, while using the same reagents, would be desirable. Here, we report on an Alexa647(®)-labeled monoclonal antibody against digoxigenin (mAb<Dig>-Alexa647(®)) that enables the detection of digoxigenylated analyte-specific ELISA reagents by Gyrolab(™). In an analysis of non-monoclonal antibody (mAb) and mAb drugs, this approach maintained the dynamic range, accuracy and precision of the standard Gyrolab™ approach using analyte-specific Alexa647(®)-labeled Ab. In a rat PK study, results of our approach, standard Gyrolab™ and ELISA were comparable, with difference values within the incurred sample reanalysis acceptance criteria. Therefore, mAb<Dig>-Alexa647(®) enables an easy switch between ELISA and Gyrolab™, providing an effective way to benefit from both platforms.
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