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The Nrf2-antioxidant response element pathway: a target for regulating energy metabolism

Permanent URL:
http://handle.nal.usda.gov/10113/56804
File:
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Abstract:
The nuclear factor E2-related factor 2 (Nrf2) is a transcription factor that responds to oxidative stress by binding to the antioxidant response element (ARE) in the promoter of genes coding for antioxidant enzymes like NAD(P)H:quinone oxidoreductase 1 (NQO1) and proteins for glutathione synthesis. The Nrf2/ARE pathway has nutritional interest owing to its activation by phytochemicals such as sulforaphane. Recently, the Nrf2 pathway was identified as having regulatory functions in mitochondrial biogenesis, adipocyte differentiation, and liver energy metabolism. Activation of Nrf2 increases energy metabolism and conversely suppresses lipid synthesis. Lard-based, but not soybean oil-based high fat diets reduce mRNA expression of Nrf2 and its downstream targets, suggesting a macronutrient influence on the activation of the Nrf2 pathway and susceptibility to oxidative stress. This review examines data revealing the Nrf2 pathway’s regulatory role in energy metabolism at the molecular, cellular and whole animal levels. Understanding the relationship of Nrf2 and energy metabolism in cells, tissues, and physiologic systems will provide novel insights for nutritional interventions for obesity and its co-morbidities such as diabetes.
Author(s):
Emilie E. Vomhof-DeKrey , Matthew J. Picklo Sr.
Subject(s):
animals , diabetes , energy metabolism , gene expression , genes , glutathione , high fat diet , lard , lipid metabolism , lipids , liver , messenger RNA , nutritional intervention , obesity , oxidative stress , oxidoreductases , phytochemicals , promoter regions , response elements , soybean oil , transcription factors
Source:
Journal of Nutritional Biochemistry 2012 v.23
Language:
English
Year:
2012
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.