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Regulation of cpg15 by signaling pathways that mediate synaptic plasticity

Authors :
Elly Nedivi
Wei-Chung Allen Lee
Tadahiro Fujino
Source :
Molecular and cellular neurosciences. 24(3)
Publication Year :
2003

Abstract

Transcriptional activation is a key link between neuronal activity and long-term synaptic plasticity. Little is known about genes responding to this activation whose products directly effect functional and structural changes at the synapse. cpg15 is an activity-regulated gene encoding a membrane-bound ligand that regulates dendritic and axonal arbor growth and synaptic maturation. We report that cpg15 is an immediate-early gene induced by Ca(2+) influx through NMDA receptors and L-type voltage-sensitive calcium channels. Activity-dependent cpg15 expression requires convergent activation of the CaM kinase and MAP kinase pathways. Although activation of PKA is not required for activity-dependent expression, cpg15 is induced by cAMP in active neurons. CREB binds the cpg15 promoter in vivo and partially regulates its activity-dependent expression. cpg15 is an effector gene that is a target for signal transduction pathways that mediate synaptic plasticity and thus may take part in an activity-regulated transcriptional program that directs long-term changes in synaptic connections.

Details

ISSN :
10447431
Volume :
24
Issue :
3
Database :
OpenAIRE
Journal :
Molecular and cellular neurosciences
Accession number :
edsair.doi.dedup.....e59064ef4df4415050fc78dcb6d01e16