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Cortical dysplasia (CD) is a common cause of epilepsy in children and is characterized by focal regions of malformed cerebral cortex. The pathogenesis and epileptogenesis of CD have not been fully elucidated, and in particular, the potential role of epigenetics has not been examined. miRNA microarray was performed on surgical specimens from CD (n=8) and normal control (n=2) children. A total of 10 differentially expressed miRNAs (DEmiRs) that were up-regulated in CD were identified including hsa-miR-21 and hsa-miR-155. The microarray results were validated using quantitative real-time PCR. After searching for the putative target genes of the DEmiRs, their biological significance was further evaluated by exploring the pathways in which the genes were enriched. The mammalian target of rapamycin (mTOR) signaling pathway was the most significantly associated, and the pathway of lissencephaly gene in neuronal migration and development was also noted. This study suggests a possible role for miRNAs in the pathogenesis of CD, especially in relation to the mTOR signaling pathway. Future studies on the epigenetic mechanisms underlying CD pathogenesis and epileptogenesis are needed.
Pubmed ID: 24560344 RIS Download
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Bioinformatics resource system including web server and web service for functional annotation and enrichment analyses of gene lists. Consists of comprehensive knowledgebase and set of functional analysis tools. Includes gene centered database integrating heterogeneous gene annotation resources to facilitate high throughput gene functional analysis.
View all literature mentionsSoftware repository for R packages related to analysis and comprehension of high throughput genomic data. Uses separate set of commands for installation of packages. Software project based on R programming language that provides tools for analysis and comprehension of high throughput genomic data.
View all literature mentionsBioCarta Pathways allows users to observe how genes interact in dynamic graphical models. Online maps available within this resource depict molecular relationships from areas of active research. In an open source approach, this community-fed forum constantly integrates emerging proteomic information from the scientific community. It also catalogs and summarizes important resources providing information for over 120,000 genes from multiple species. Find both classical pathways as well as current suggestions for new pathways.
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