Induction of Cereblon by NF-E2-related factor2 in neuroblastoma cells exposed to hypoxia-reoxygenation.
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Induction of Cereblon by NF-E2-related factor2 in neuroblastoma cells exposed to hypoxia-reoxygenation.

Biochem Biophys Res Commun. 2010 Aug 4;

Authors: Lee KJ, Lee KM, Jo S, Kang KW, Park CS

Cereblon is a protein encoded by the CRBN gene, which has been associated with human autosomal recessive nonsyndromic mental retardation. However, little is known about the regulation of CRBN expression. Following exposure of mouse neuroblastoma N2A cells to hypoxia/reoxygenation (H/R), mRNA and protein expression of CRBN were increased. To better understand how CRBN expression is regulated, the promoter region of the mouse CRBN gene was characterized functionally. Deletion mutations and site-directed mutagenesis led to the identification of a functional NF-E2-related factor2 (Nrf2)-binding site. Electrophoretic mobility shift analysis indicated that Nrf2 binds to a putative binding site in the CRBN promoter. Nrf2 overexpression and tert-butylhydroquinone treatment enhanced CRBN protein expression. These results imply that Nrf2 stimulates CRBN gene transcription under H/R conditions in neuronal cells.

PMID: 20691658 [PubMed - as supplied by publisher]

Read the complete post at http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?tmpl=NoSidebarfile&db=PubMed&cmd=Retrieve&list_uids=20691658&dopt=Abstract

Posted 11 Aug 2010 8:23 AM by pubmed: neuroblastoma
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