Use of transgenic cell lines in mechanistic studies of drug metabolism

Toxicology in Vitro : an International Journal Published in Association with BIBRA
R GasserA Viger-Chougnet

Abstract

Heterologously expressed human drug-metabolizing enzyme systems in a variety of hosts (mammalian cell lines, baculovirus/insect cells, yeast and Escherichia coli) have their distinct advantages for particular studies of biotransformation or mechanistic processes. In contrast to classical in vitro systems such as tissue slices, hepatocytes or subcellular fractions, expressed enzymes allow the study of single enzyme reactions in isolation. Furthermore, metabolic reactions of enzymes expressed only in minor amounts in human tissue can be assessed. Here we present an overview of how recombinant enzymes are being used in biotransformation studies and we will present several examples of applications of recombinant cytochrome P450 preparations during drug development. It is beyond the scope of this overview to describe all experimental procedures in detail since they are based on published techniques unless otherwise indicated. Examples of applications of recombinant cytochrome P450 preparations include the involvement of human metabolizing enzymes in a metabolic pathway and their metabolic products, mechanistic studies to determine specific drug-drug interactions at the metabolic level and detection of mechanism-based inactivation of...Continue Reading

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Jun 7, 2003·Toxicology and Applied Pharmacology·Esther F A BrandonJan H M Schellens
Aug 23, 2006·Expert Opinion on Drug Metabolism & Toxicology·Marc VermeirGeert Mannens
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Mar 9, 2006·Alternatives to Laboratory Animals : ATLA·Sandra CoeckeAndrew Worth

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