Title: ReProGlo: a new stem cell based reporter assay aimed to predict embryotoxic potential of drugs and chemicals
Authors: BREMER SusanneUIBEL FrederikSTUMMANN TinaSCHWARZ MichaelWEIMER MarcMUEHLEISEN AnnetteKÖHLE Christoph
Citation: REPRODUCTIVE TOXICOLOGY vol. 30 no. 1 p. 103-112
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2010
JRC Publication N°: JRC55844
ISSN: 0890-6238
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC55844
DOI: 10.1016/j.reprotox.2009.12.002
Type: Articles in Journals
Abstract: A stem cell-based reporter assay was developed to detect drug-induced alterations in the canonical Wnt/ß-catenin signaling pathway, which is involved in the regulation of early embryonic development. The so-called ReProGlo assay allows simultaneous determination of cell viability and luciferase reporter activity in a high throughput 96-well microtiter format. A clone of mouse embryonic stem (mES) cells stably expressing the SuperTopFlash reporter was established. This allows Wnt pathway activity determinations in undifferentiated mES cells and their differentiated descendants. Several test chemicals were analyzed in the new assay system. Known embryotoxicants like retinoic acid or lithium chloride induced concentration-dependent increases in reporter activity. The potency of yalproic acid and a series of structural analogs to activate the Wnt pathway correlated well with their reported teratogenic activity in the mouse. Cyclophosphamide was also active but only after metabolic activation by hepatocytes. The new test may help to predict embryotoxic potential of chemicals.
JRC Institute:Institute for Health and Consumer Protection

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