The Aldo-Keto Reductase Akr1b7 Gene Is a Common Transcriptional Target of Xenobiotic Receptors Pregnane X Receptor and Constitutive Androstane Receptor
Molecular Pharmacology, ISSN: 0026-895X, Vol: 76, Issue: 3, Page: 604-611
2009
- 38Citations
- 29Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations38
- Citation Indexes38
- CrossRef38
- 38
- Captures29
- Readers29
- 29
Article Description
Aldo-keto reductase (AKR) family 1, member 7 (AKR1B7), a member of the AKR superfamily, has been suggested to play an important role in the detoxification of lipid peroxidation by-products. The nuclear receptors pregnane X receptor (PXR) and constitutive androstane receptor (CAR) are xenosensors postulated to alleviate xeno- and endobiotic chemical insults. In this study, we show that the mouse Akr1b7 is a shared transcriptional target of PXR and CAR in the liver and intestine. Treatment of wild-type mice with the PXR agonist pregnenolone-16α-carbonitrile (PCN) activated Akr1b7 gene expression, whereas the effect was abrogated in PXR(-/-) mice. Similarly, the activation of Akr1b7 gene expression by the CAR agonist 1,4-bis[2-(3,5-dichlorpyridyloxyl)]-benzene, seen in wild-type mice, was abolished in CAR(-/-) mice. The promoter of Akr1b7 gene was activated by PXR and CAR, and this activation was achieved through the binding of PXR-retinoid X receptor (RXR) or CAR-RXR heterodimers to direct repeat-4 type nuclear receptor-binding sites found in the Akr1b7 gene promoter. At the functional level, treatment with PCN in wild-type mice, but not PXR(-/-) mice, led to a decreased intestinal accumulation of malondialdehyde, a biomarker of lipid peroxidation. The regulation of Akr1b7 by PXR was independent of the liver X receptor (LXR), another nuclear receptor known to regulate this AKR isoform. Because a major function of Akr1b7 is to detoxify lipid peroxidation, the PXR-, CAR-, and LXR-controlled regulatory network of Akr1b7 may have contributed to alleviate toxicity associated with lipid peroxidation.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0026895X24020261; http://dx.doi.org/10.1124/mol.109.057455; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=69549088829&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/19542321; https://linkinghub.elsevier.com/retrieve/pii/S0026895X24020261; https://dx.doi.org/10.1124/mol.109.057455; https://molpharm.aspetjournals.org/content/76/3/604
Elsevier BV
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