Abstract
Variations in the capacity to detoxify carcinogens and other environmental toxins, and to eliminate drugs and waste products of metabolism, are likely to have significant effects on health and drug efficacy. As the UDP glucuronosyltransferases metabolize many of these substances to less toxic glucuronides, variations in UGT expression are likely to be important in maintenance of health and therapeutic outcomes. The factors that regulate UGT gene expression are beginning to be identified. From among these factors, the Liver-Enriched Transcription Factors (LETFs), including Hepatocyte Nuclear Factors 1 and 4α, have a major role in UGT regulation in the major sites of drug metabolism, the liver and gastrointestinal tract. This review will describe what is currently known about these LETFs and their role in UGT gene expression. It is likely that polymorphisms in LETFs and the sites to which they bind in UGT genes, may impact on drug induced disease and drug therapy.
Keywords: UDP glucuronosyltransferase, liver-enriched transcription factors, hepatocyte nuclear factor, CAAT-enhancer binding protein, gene regulation
Current Drug Metabolism
Title: Liver-Enriched Transcription Factors and Their Role in Regulating UDP Glucuronosyltransferase Gene Expression
Volume: 9 Issue: 5
Author(s): D. A. Gardner-Stephen and P. I. Mackenzie
Affiliation:
Keywords: UDP glucuronosyltransferase, liver-enriched transcription factors, hepatocyte nuclear factor, CAAT-enhancer binding protein, gene regulation
Abstract: Variations in the capacity to detoxify carcinogens and other environmental toxins, and to eliminate drugs and waste products of metabolism, are likely to have significant effects on health and drug efficacy. As the UDP glucuronosyltransferases metabolize many of these substances to less toxic glucuronides, variations in UGT expression are likely to be important in maintenance of health and therapeutic outcomes. The factors that regulate UGT gene expression are beginning to be identified. From among these factors, the Liver-Enriched Transcription Factors (LETFs), including Hepatocyte Nuclear Factors 1 and 4α, have a major role in UGT regulation in the major sites of drug metabolism, the liver and gastrointestinal tract. This review will describe what is currently known about these LETFs and their role in UGT gene expression. It is likely that polymorphisms in LETFs and the sites to which they bind in UGT genes, may impact on drug induced disease and drug therapy.
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Cite this article as:
Gardner-Stephen A. D. and Mackenzie I. P., Liver-Enriched Transcription Factors and Their Role in Regulating UDP Glucuronosyltransferase Gene Expression, Current Drug Metabolism 2008; 9 (5) . https://dx.doi.org/10.2174/138920008784746409
DOI https://dx.doi.org/10.2174/138920008784746409 |
Print ISSN 1389-2002 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-5453 |
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