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Evaluation of Human Liver Slices and Reporter Gene Assays as Systems for Predicting the Cytochrome P450 Induction Potential of Drugs in Vivo in Humans
DMPK & Bioanalytical Chemistry, AstraZeneca R&D Mölndal, Mölndal, Sweden & Division of Clinical Pharmacology, Department of Laboratory Medicine, Karolinska University Hospital, Huddinge, Stockholm, Sweden.
DMPK & Bioanalytical Chemistry, AstraZeneca R&D Mölndal, Mölndal, Sweden.
Molecular Pharmacology, AstraZeneca R&D Mölndal, Mölndal, Sweden.
DMPK & Bioanalytical Chemistry, AstraZeneca R&D Mölndal, Mölndal, Sweden.
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2006 (English)In: Pharmaceutical research, ISSN 0724-8741, E-ISSN 1573-904X, Vol. 23, no 1, p. 56-69Article in journal (Refereed) Published
Abstract [en]

Purpose

The aim of the study was to investigate the feasibility of predicting human in vivo cytochrome P450 (CYP) induction properties of drugs using in vitro methods.

Methods

The CYP induction potential of compounds was tested in human liver slices and in reporter gene assays for the aryl hydrocarbon receptor (AhR) and the pregnane X receptor (PXR).

Results

In human liver slices, CYP activities decreased dramatically over the experimental period, whereas mRNA levels could reliably be used to investigate CYP1A, 2C9, and 3A4 induction. However, the interindividual variations and demanding experimentation limit the use of liver slices in screening programs. Reporter gene assays are robust and reliable assays, amenable to high throughput screening. Several compounds activated AhR. The relevance of this activation, however, needs to be further investigated since there are no clear reports on drugs inducing CYP1A in vivo. The results from the PXR assay could be used to correctly classify compounds with known CYP3A induction properties when relating in vivo AUCtot to PXR EC50 values.

Conclusions

Liver slices are a valuable model to study the regulation of a larger number of enzymes by single compounds. The PXR reporter gene assay could be used as a reliable screening method to predict CYP3A induction in vivo. © 2006 Springer Science + Business Media, Inc.

Place, publisher, year, edition, pages
New York: Springer, 2006. Vol. 23, no 1, p. 56-69
Keywords [en]
AhR, CYP induction, human liver slices, in vitro–in vivo correlation, PXR, reporter gene assay
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:hh:diva-24119DOI: 10.1007/s11095-005-8812-5ISI: 000235135400005PubMedID: 16328606Scopus ID: 2-s2.0-32244447844OAI: oai:DiVA.org:hh-24119DiVA, id: diva2:679519
Available from: 2013-12-16 Created: 2013-12-09 Last updated: 2018-03-22Bibliographically approved

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Lutz, E. S. Mareike

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