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Post-transcriptional regulation of microRNA expression
Austrian Academy of Science.
Austrian Academy of Science.
Austrian Academy of Science.
Austrian Academy of Science.
2006 (engelsk)Inngår i: RNA: A publication of the RNA Society, ISSN 1355-8382, E-ISSN 1469-9001, Vol. 12, nr 7, s. 1161-1167Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

microRNAs ( miRNAs) are endogenous, noncoding similar to 22-nucleotide RNA molecules that have recently emerged as fundamental, post-transcriptional regulators of cognate target gene expression. Many mammalian miRNAs are expressed in a tissue-specific manner, a phenomenon that has so far been attributed to transcriptional regulation. We here show by Northern blots and in situ hybridization experiments that the expression of mammalian miRNAs can be regulated at the post-transcriptional level. In particular, miR-138 is spatially restricted to distinct cell types, while its precursor, pre-miR-138-2, is ubiquitously expressed throughout all tissues analyzed. Furthermore, pre-miR-138-2 is exported from the nucleus to the cytoplasm, suggesting that cleavage of this pre-miRNA by Dicer is restricted to certain tissues and cell types. Thus, differential processing of pre-miRNAs might be an alternative mechanism to control miRNA function.

sted, utgiver, år, opplag, sider
Cold Spring Harbor Laboratory Press , 2006. Vol. 12, nr 7, s. 1161-1167
Emneord [en]
microRNAs; post-transcriptional regulation; Dicer; tissue-specific expression
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Identifikatorer
URN: urn:nbn:se:umu:diva-146708DOI: 10.1261/rna.2322506ISI: 000238670900003OAI: oai:DiVA.org:umu-146708DiVA, id: diva2:1198585
Tilgjengelig fra: 2018-04-18 Laget: 2018-04-18 Sist oppdatert: 2018-06-09

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Alenius, Matias

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