In vitro evaluation of human xenobiotic toxicity: scientific concepts and the novel integrated discrete multiple cell co-culture (IdMOC) technology.
In vitro human-based experimental systems represent a relevant preclinical tool for the definition of human xenobiotic properties as human-specific xenobiotic properties, by definition, cannot be detected with nonhuman laboratory animals. For the evaluation of human-specific xenobiotic toxicity, the experimental system should have human xenobiotic metabolism as well as cell populations representing the target cells in vivo. Based on these requirements, we have developed a novel cell culture technology, the Integrated Discrete Multiple Organ Co-culture (IdMOC) system, as an alternative experimental model for the evaluation of xenobiotic toxicity. The IdMOC system employs a wells-in-a-well concept for the co-culturing of cells from different organs as physically separated (discrete) entities in the inner wells, but interconnected by an overlying medium (integrated) in the outer well. The IdMOC system models a multi-organ animal/human in vivo with organs that are physically separated but interconnected by the systemic circulation. The IdMOC allows multi-organ interactions that are absent in the conventional single-cell type cultures. Applications of IdMOC include the evaluation of multiple organ metabolism as well as organ-specific drug distribution and toxicity. A particularly interesting application of IdMOC is the co-culturing of cancer cells and cells representing major organs for the selection of anticancer agents with minimal organ toxicity.
Li
Albert P
AP
Advanced Pharmaceutical Sciences Inc., Columbia, Maryland 21045, USA. lialbert@invitroadmet.com
D018929:Cell Culture Techniques / Q000379:methods*; D002478:Cells, Cultured / Q000187:drug effects*; D018920:Coculture Techniques / Q000379:methods; D003577:Cytochrome P-450 Enzyme System / Q000187:drug effects / Q000378:metabolism; D006801:Humans; D007527:Isoenzymes / Q000187:drug effects / Q000378:metabolism; D009924:Organ Culture Techniques / Q000379:methods; D013629:Tamoxifen / Q000494:pharmacology; D015262:Xenobiotics / Q000633:toxicity*
D007527:Isoenzymes; D015262:Xenobiotics; D013629:Tamoxifen; D003577:Cytochrome P-450 Enzyme System