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Curr Opin Neurobiol. 2006 Oct;16(5):535-9. Epub 2006 Sep 7.

A trace of silence: memory and microRNA at the synapse.

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Department of Molecular and Cellular Biology, Harvard University, 7 Divinity Avenue, Cambridge, MA, USA.


Identifying the neural circuits that mediate particular behaviors and uncovering their plasticity is an endeavor at the heart of neuroscience. This effort is allied with the elucidation of plasticity mechanisms, because the molecular determinants of plasticity can be markers for the neurons and synapses that are modified by experience. Of particular interest is protein synthesis localized to the synapse, which might establish and maintain the stable modification of neuronal properties, including the pattern and strength of synaptic connections. Recent studies reveal that microRNAs and the RISC pathway regulate synaptic protein synthesis. Is synaptic activity of the RISC pathway a molecular signature of memory?

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