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Neuroscience Letters
Article . 2013 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Transcriptional regulation of mouse neuroglobin gene by cyclic AMP responsive element binding protein (CREB) in N2a cells

Authors: Xiaoying Wang; Jing Yuan; Yadan Li; Jian Zhang; Shuanglin Xiang; Zhanyang Yu; Ning Liu;

Transcriptional regulation of mouse neuroglobin gene by cyclic AMP responsive element binding protein (CREB) in N2a cells

Abstract

Neuroglobin (Ngb) has been demonstrated to be a novel neuroprotective protein that protects against hypoxia/ischemia and oxidative stress-induced injury in the nervous system. However, the regulation mechanisms of Ngb gene expression under both normal resting and stress conditions have not been fully elucidated. The cyclic AMP response element binding protein (CREB) is a key transcription factor that regulates a variety of pro-survival genes, but its role in regulating the neuroprotective gene Ngb has not been studied. In this study we investigated the transcriptional regulation of mouse Ngb gene by CREB in mouse neuroblastoma cell line N2a. Our results showed that CREB knockdown decreased Ngb gene expression, and overexpression of the wild-type CREB, but not the mutant CREB, significantly increased Ngb gene expression in N2a cells. Moreover, a cAMP response element (CRE) site located at -854 in the promoter region of mouse Ngb gene was found to be responsible for both basal and CREB-induced Ngb promoter activity. Using chromatin immunopreciptation (ChIP) assays, we found that CREB could bind to the Ngb promoter region spanning from -1016 to -793 that harbors the CRE site. Taken together, our results suggested that transcription factor CREB participates in the transcriptional regulation of mouse Ngb gene.

Related Organizations
Keywords

Transcription, Genetic, Neuroglobin, Nerve Tissue Proteins, Globins, Mice, Gene Expression Regulation, Cell Line, Tumor, Animals, Cyclic AMP Response Element-Binding Protein, Promoter Regions, Genetic, Protein Binding

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
23
Top 10%
Average
Top 10%
bronze