Models of microRNA–target coordination

Neil R. Smalheiser, Vetle I. Torvik

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Introduction The number of microRNAs appears to be ever-growing, as more intensive sequencing of small RNAs reveals a large population of sequences that are expressed at low abundance, or in a tissue- or stage-specific manner. Computational studies have also predicted the existence of thousands of candidate microRNA precursor hairpin structures throughout mammalian genomes (reviewed in Bentwich, 2005). The number of predicted potential targets per microRNA is also steadily increasing, with the recognition that binding of a 7-mer seed at the 5′-end of a microRNA may be sufficient to regulate a target mRNA functionally (Doench and Sharp, 2004; Farh et al., 2005; Lim et al., 2005; Stark et al., 2005; Sood et al., 2006). But how are microRNAs and their targets coordinated – if at all? 0A random model One recent paper proposes that microRNAs arise whenever a RNA hairpin structure happens to be transcribed, that happens to be competent for processing by Drosha and Dicer (Svoboda and Cara, 2006). Most of these microRNAs will have no function at all, at least not initially: They will bind to a relatively large number of putative target regions at random (a 7-mer sequence will bind randomly every 47 = 16 384 bases on average), and those target regions that happen to be associated with a useful phenotypic response will tend to be retained over evolutionary time whereas those mRNAs that show deleterious responses will become relatively depleted in target sequences (Svoboda and Cara, 2006).

Original languageEnglish (US)
Title of host publicationMicroRNAs
Subtitle of host publicationFrom Basic Science to Disease Biology
PublisherCambridge University Press
Pages221-226
Number of pages6
ISBN (Electronic)9780511541766
ISBN (Print)9780521865982
DOIs
StatePublished - Jan 1 2007
Externally publishedYes

Fingerprint

MicroRNAs
RNA
RNA Sequence Analysis
Messenger RNA
Seed
Seeds
Genes
Genome
Tissue
Processing
Population

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Smalheiser, N. R., & Torvik, V. I. (2007). Models of microRNA–target coordination. In MicroRNAs: From Basic Science to Disease Biology (pp. 221-226). Cambridge University Press. https://doi.org/10.1017/CBO9780511541766.019

Models of microRNA–target coordination. / Smalheiser, Neil R.; Torvik, Vetle I.

MicroRNAs: From Basic Science to Disease Biology. Cambridge University Press, 2007. p. 221-226.

Research output: Chapter in Book/Report/Conference proceedingChapter

Smalheiser, NR & Torvik, VI 2007, Models of microRNA–target coordination. in MicroRNAs: From Basic Science to Disease Biology. Cambridge University Press, pp. 221-226. https://doi.org/10.1017/CBO9780511541766.019
Smalheiser NR, Torvik VI. Models of microRNA–target coordination. In MicroRNAs: From Basic Science to Disease Biology. Cambridge University Press. 2007. p. 221-226 https://doi.org/10.1017/CBO9780511541766.019
Smalheiser, Neil R. ; Torvik, Vetle I. / Models of microRNA–target coordination. MicroRNAs: From Basic Science to Disease Biology. Cambridge University Press, 2007. pp. 221-226
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