Abstract

PAIA assays: A new bead-based assay system for high throughput protein quantification

Highlights

  • The patent pending PAIA technology provides a novel platform for the quantification of proteins, e.g. monoclonal antibodies

  • PAIA assays consist of functionalized beads to capture the protein of interest and a fluorescent marker to detect the analyte

  • In contrast to other bead-based assays, which measure the fluorescence intensity of marker that is bound to the beads [1], PAIA assays measure the fluorescence of unbound marker remaining in solution

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Summary

Background

PAIA assays consist of functionalized beads to capture the protein of interest (the analyte) and a fluorescent marker to detect the analyte. We use protrusions on the bottom of the microplate that separate captured analyte-marker complexes from unbound fluorescent marker. No washing steps are needed and the assay can be performed in an automation-friendly 384-well plate format (Figure 1A).The time to result, the amount of sample required, and the hands-on time are substantially reduced compared to other immunoassay formats. This novel approach is suitable for high throughput analysis of protein containing samples like supernatants of antibody producing cells

Material and methods
Results and discussion
Limit of detection

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