Abstract

The Ames microplate format (MPF™) is a miniaturized version of the plate agar Ames tests that takes advantage of a liquid microplate approach in 384-well plates with a color change-based readout. This method, already compared to the Ames test in Petri dishes, is used to assess the genotoxic potential of a variety of test items, including (but not limited to) chemicals, environmental samples, and drug candidates.61 chemicals were selected from the updated recommended lists of genotoxic and non-genotoxic chemicals for assessment of the performance of new or improved genotoxicity tests and tested in up to five bacterial strains. The agreement with the data from the scientific literature (over 90%) confirms the reliability of the Ames MPF™ as a cost-effective and 3R-compliant alternative to the regulatory Ames test that allows to predict and evaluate chemicals’ mutagenicity in a faster, less laborious and, if available, automatable manner.

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