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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
The CNC basic leucine zipper factor, Nrf1, is essential for cell survival in response to oxidative stress-inducing agents. Role for Nrf1 in gamma-gcs(l) and gss expression in mouse fibroblasts.
Nrf1 is a member of the CNC-basic leucine zipper (CNC-bZIP) family of transcription factors. CNC bZIP factors, together with small Maf proteins, bind as heterodimers to the NF-E2/AP-1 element. Similarity between the NF-E2/AP-1 element and the antioxidantresponse element identified in a number of promoters of genes involved in detoxification and antioxidant response raises the possibility that Nrf1 plays a role in mediating the antioxidantresponse element response. In this study, we exploited the availability of cells from Nrf1 knockout mice to study the role of Nrf1 transcription factor in the regulation of antioxidantgene expression and in cellular antioxidant response. Fibroblast cells derived from Nrf1 null embryos showed lower levels of glutathione and enhanced sensitivity to the toxic effects of oxidant compounds. Our results indicate that Nrf1 plays a role in the regulation of genes involved in glutathione synthesis and suggest a basis for a correspondingly low GSH concentration and reduced stress response.[1]
