Protein Synthesis Inhibitors, Gene Superinduction and Memory: Too Little or Too Much Protein?

Overview

Journal Neurobiol Learn Mem

Specialties Biology
Neurology
Social Sciences

Date 2007 Oct 2

PMID 17904877

Citations 21

Authors

Jelena Radulovic

Natalie C Tronson

Affiliations

Soon will be listed here.

Abstract

To date, the effects of protein synthesis inhibitors (PSI) in learning and memory processes have been attributed to translational arrest and consequent inhibition of de novo protein synthesis. Here we argue that amnesia produced by PSI can be the direct result of their abnormal induction of mRNA-a process termed gene superinduction. This action exerted by PSI involves an abundant and prolonged accumulation of mRNA transcripts of genes that are normally transiently induced. We summarize experimental evidence for the multiple mechanisms and signaling pathways mediating gene superinduction and consider its relevance for PSI-induced amnesia. This mechanistic alternative to protein synthesis inhibition is compared to models of electroconvulsive seizures and fragilexsyndrome associated with enhanced mRNA/protein levels and cognitive deficits.

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