Title: Practical use of the Virtual Cell Based Assay: Simulation of repeated exposure experiments in liver cell lines
Authors: PAINI ALICIAMENNECOZZI MILENAHORVAT TOMISLAVGERLOFF KIRSTEN BRITTAPALOSAARI TAINASALA BENITO JOSE'WORTH ANDREW
Citation: TOXICOLOGY IN VITRO vol. 45 no. Part 2 p. 233-240
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2016
JRC N°: JRC103486
ISSN: 0887-2333
URI: http://www.sciencedirect.com/science/article/pii/S0887233316302144
http://publications.jrc.ec.europa.eu/repository/handle/JRC103486
DOI: 10.1016/j.tiv.2016.10.007
Type: Articles in periodicals and books
Abstract: The Virtual Cell Based Assay (VCBA) was applied to simulate the long-term (repeat dose) toxic effects of chemicals, including substances in cosmetics and personal care products. The presented model is an extension of the original VCBA for simulation of single exposure and is implemented in a KNIME workflow. This work illustrates the steps taken to simulate the repeated dose effects of two reference compounds, caffeine and amiodarone. Using caffeine, in vitro experimental viability data in single exposure from two human liver cell lines, HepG2 and HepaRG, were measured and used to optimize the VCBA, subsequently repeated exposure simulations were run. Amiodarone was then tested and simulations were performed under repeated exposure conditions in HepaRG. The results show that the VCBA can adequately predict repeated exposure experiments in liver cell lines. The refined VCBA model can be used not only to support the design of long term in vitro experiments but also practical applications in risk assessment. Our model is a step towards the development of in silico predictive approaches to replace, refine, and reduce the in vivo repeated dose systemic toxicity studies in the assessment of human safety.
JRC Directorate:Health, Consumers and Reference Materials

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