Experimental Exposure Assessment for Cell-based Bioassays in 96- and 384-well Plates

Overview

Journal Front Toxicol

Date 2023 Aug 11

PMID 37564394

Authors

Julia Huchthausen

Maria Konig

Beate I Escher

Luise Henneberger

Affiliations

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Abstract

cell-based bioassays have great potential for applications in the human health risk assessment of chemicals. The quantification of freely dissolved concentrations ( ) in assays is essential to generate reliable data for -to- extrapolation. Existing methods for the quantification of are limited to low-throughput microtiter plates. The present study is a proof of principle for the applicability of a solid-phase microextraction (SPME) method for the determination of in the peroxisome proliferator-activated receptor gamma (PPARγ) bioassay run in 384-well plates with 80 µL medium per well. The effect concentrations obtained from 384-well plates were compared with those obtained from 96-well plates in a previous study. Nominal effect concentrations obtained using 96- and 384-well plates agreed with each other within a factor of three, and freely dissolved effect concentrations agreed within a factor of 6.5. The good degree of agreement in the results from both plate formats proves the general applicability of the SPME method for the determination of for bioassays in 384-well plates, making the present study a first step toward exposure assessment in high-throughput bioassays.

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