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      Desperately seeking microRNA targets.

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          Abstract

          MicroRNAs (miRNAs) suppress gene expression by inhibiting translation, promoting mRNA decay or both. Each miRNA may regulate hundreds of genes to control the cell's response to developmental and other environmental cues. The best way to understand the function of a miRNA is to identify the genes that it regulates. Target gene identification is challenging because miRNAs bind to their target mRNAs by partial complementarity over a short sequence, suppression of an individual target gene is often small, and the rules of targeting are not completely understood. Here we review computational and experimental approaches to the identification of miRNA-regulated genes. The examination of changes in gene expression that occur when miRNA expression is altered and biochemical isolation of miRNA-associated transcripts complement target prediction algorithms. Bioinformatic analysis of over-represented pathways and nodes in protein-DNA interactomes formed from experimental candidate miRNA gene target lists can focus attention on biologically significant target genes.

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          Author and article information

          Journal
          Nat Struct Mol Biol
          Nature structural & molecular biology
          Springer Science and Business Media LLC
          1545-9985
          1545-9985
          Oct 2010
          : 17
          : 10
          Affiliations
          [1 ] Immune Disease Institute and Program in Cellular and Molecular Medicine, Children's Hospital Boston, Harvard Medical School, Boston, Massachusetts, USA.
          Article
          nsmb.1921
          10.1038/nsmb.1921
          20924405
          118cf7bf-f82f-4a78-996d-9fb0f6ce4497
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