R26-(Liver-CYP3A4)

This knock-in model was generated by inserting the human CYP3A4 cDNA driven by the liver-specific APOE promoter into the mouse Rosa26 site, which can be used to obtain liver-expressed CYP3A4 humanized model after mating with the Cyp3a13 gene and other Cyp3a family gene knockout mice. This model can be used with NM-KI-18033 mice which has gut-specific expression of human CYP3A4 to compare the contribution of intestinal versus hepatic metabolism to the biotransformation of a test article.