RGD Reference Report - A novel role of CPEB3 in regulating EGFR gene transcription via association with Stat5b in neurons. - Rat Genome Database

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A novel role of CPEB3 in regulating EGFR gene transcription via association with Stat5b in neurons.

Authors: Peng, SC  Lai, YT  Huang, HY  Huang, HD  Huang, YS 
Citation: Peng SC, etal., Nucleic Acids Res. 2010 Nov;38(21):7446-57. doi: 10.1093/nar/gkq634. Epub 2010 Jul 17.
RGD ID: 8553583
Pubmed: PMID:20639532   (View Abstract at PubMed)
PMCID: PMC2995057   (View Article at PubMed Central)
DOI: DOI:10.1093/nar/gkq634   (Journal Full-text)

CPEB3 is a sequence-specific RNA-binding protein and represses translation of its target mRNAs in neurons. Here, we have identified a novel function of CPEB3 as to interact with Stat5b and inhibit its transcription activity in the nucleus without disrupting dimerization, DNA binding and nuclear localization of Stat5b. Moreover, CPEB3 is a nucleocytoplasm-shuttling protein with predominant residence in the cytoplasm; whereas activation of NMDA receptors accumulates CPEB3 in the nucleus. Using the knockdown approach, we have found the receptor tyrosine kinase, EGFR, is a target gene transcriptionally activated by Stat5b and downregulated by CPEB3 in neurons. The increased EGFR expression in CPEB3 knockdown neurons, when stimulated with EGF, alters the kinetics of downstream signaling. Taken together, CPEB3 has a novel function in the nucleus as to suppress Stat5b-dependent EGFR gene transcription. Consequently, EGFR signaling is negatively regulated by CPEB3 in neurons.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
cellular response to epidermal growth factor stimulus involved_inIDA 8553583; 8553583PMID:20639532UniProt 
epidermal growth factor receptor signaling pathway involved_inIDA 8553583PMID:20639532UniProt 
learning or memory involved_inIDA 8553583PMID:20639532UniProt 

Molecular Function
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
chromatin binding enablesIDA 8553583PMID:20639532UniProt 

Objects Annotated

Genes (Rattus norvegicus)
Egfr  (epidermal growth factor receptor)
Stat5b  (signal transducer and activator of transcription 5B)


Additional Information