Albert P. Li

The application of the Integrated Discrete Multiple Organ Co-culture (IdMOC®) system in the evaluation of organ-specific toxicity is reviewed. In vitro approaches to predict in vivo toxicity have met with limited success, mainly because of the complexity of in vivo toxic responses. In vivo properties that are not well-represented in vitro include organ-specific responses, multiple organ metabolism, and multiple organ interactions. The IdMOC system has been developed to address these deficiencies. The system uses a ‘wells-within-a-well’ concept for the co-culturing of cells or tissue slices from different organs as physically separated (discrete) entities in the small inner wells. These inner wells are nevertheless interconnected (integrated) by overlying culture medium in the large outer containing well. The IdMOC system thereby models the in vivo situation, in which multiple organs are physically separated but interconnected by the systemic circulation, permitting multiple organ interactions. The IdMOC system, with either cells or tissue slices from multiple organs, can be used to evaluate cell type-specific or organ-specific toxicity.
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