Linked Life Data

17482685

Source:http://linkedlifedata.com/resource/pubmed/id/17482685

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
2007-5-14
pubmed:abstractText
E2F and FOXO transcription factors both play a role in neuronal apoptosis. In addition, both E2F-induced apoptosis and FOXO function are inhibited by the kinase Akt. We therefore tested whether FOXO is downstream of E2F-1 during neuronal apoptosis. We found that expression of endogenous FOXO1 and FOXO3a is induced by E2F-1. The presence of putative E2F binding sites in the promoters of both genes suggested that FOXO genes are direct targets of E2F-1. Indeed, a 4-hydroxytamoxifen activated E2F-1-ER fusion protein induced FOXO expression in the presence of cycloheximide. Moreover, E2F-1 activated the FOXO1 promoter in transient reporter assays, and E2F-1-ER as well as endogenous E2F bound to the FOXO1 promoter in vivo. Yet, E2F-1-mediated apoptosis of differentiated PC12 cells after withdrawal of NGF was not accompanied by changes in FOXO expression, indicating that no transcriptional induction of FOXO occurs during E2F-1-dependent neuronal apoptosis. In summary, our data identify E2F-1 as a first transcription factor regulating FOXO expression, providing a link between E2F and FOXO proteins in the control of cell fate.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:volume
1769
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
244-52
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
E2F-1 regulates expression of FOXO1 and FOXO3a.
pubmed:affiliation
Institute of Molecular Biology and Tumor Research (IMT), Emil-Mannkopff-Strasse 2, 35033 Marburg, Germany.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't