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Title

Activity-dependent regulation of genes implicated in X-linked non-specific mental retardation

Authors
Mas, C.
Published in Neuroscience. 2002, vol. 114, no. 1, p. 13-17
Abstract X-linked forms of non-specific mental retardation are complex disorders, for which mutations in several genes have recently been identified. These include OPHN1, GDI1, PAK3, IL1RAPL, TM4SF2, FMR2 and RSK2. To investigate the mechanisms through which alterations of these gene products could result in cognitive impairment, we analyzed their expression using quantitative PCR technique in two in vitro models of activity-dependent gene regulation: kainate-induced seizures and long-term synaptic potentiation (LTP). We found that the level of expression of four genes, PAK3, IL1RAPL, RSK2 and TM4SF2, was significantly up-regulated following kainate treatment. Furthermore we observed a significant increase in mRNA levels of PAK3 and IL1RAPL following LTP induction. These results suggest a possible role for these four genes in activity-dependent brain plasticity.
Keywords Action Potentials/geneticsAnimalsBrain-Derived Neurotrophic Factor/geneticsConnexins/geneticsExcitatory Amino Acid Agonists/diagnostic use/pharmacologyEye Proteins/geneticsGene Expression Regulation/ physiologyHippocampus/drug effects/metabolism/physiopathologyInterleukin-1 Receptor Accessory ProteinKainic Acid/diagnostic use/pharmacologyLinkage (Genetics)/ geneticsLong-Term Potentiation/ geneticsMental Retardation/ genetics/metabolism/physiopathologyMiceOrgan Culture TechniquesPotassium Channels/geneticsPotassium Channels, Calcium-ActivatedProtein-Serine-Threonine Kinases/geneticsRNA, Messenger/metabolismReceptors, Interleukin-1/geneticsSeizures/chemically induced/ genetics/physiopathologySmall-Conductance Calcium-Activated Potassium ChannelsUp-Regulation/ geneticsX Chromosome/ geneticsP21-Activated Kinases
Stable URL http://archive-ouverte.unige.ch/unige:10199
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PMID: 12207950
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