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  • 1
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    FMRP targets distinct mRNA sequence elements to regulate protein expression (2012)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2012-12-14
    Description: Fragile X syndrome (FXS) is a multi-organ disease that leads to mental retardation, macro-orchidism in males and premature ovarian insufficiency in female carriers. FXS is also a prominent monogenic disease associated with autism spectrum disorders (ASDs). FXS is typically caused by the loss of fragile X mental retardation 1 (FMR1) expression, which codes for the RNA-binding protein FMRP. Here we report the discovery of distinct RNA-recognition elements that correspond to the two independent RNA-binding domains of FMRP, in addition to the binding sites within the messenger RNA targets for wild-type and I304N mutant FMRP isoforms and the FMRP paralogues FXR1P and FXR2P (also known as FXR1 and FXR2). RNA-recognition-element frequency, ratio and distribution determine target mRNA association with FMRP. Among highly enriched targets, we identify many genes involved in ASD and show that FMRP affects their protein levels in human cell culture, mouse ovaries and human brain. Notably, we discovered that these targets are also dysregulated in Fmr1(-/-) mouse ovaries showing signs of premature follicular overdevelopment. These results indicate that FMRP targets share signalling pathways across different cellular contexts. As the importance of signalling pathways in both FXS and ASD is becoming increasingly apparent, our results provide a ranked list of genes as basis for the pursuit of new therapeutic targets for these neurological disorders.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3528815/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3528815/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ascano, Manuel Jr -- Mukherjee, Neelanjan -- Bandaru, Pradeep -- Miller, Jason B -- Nusbaum, Jeffrey D -- Corcoran, David L -- Langlois, Christine -- Munschauer, Mathias -- Dewell, Scott -- Hafner, Markus -- Williams, Zev -- Ohler, Uwe -- Tuschl, Thomas -- HD068546/HD/NICHD NIH HHS/ -- K08 HD068546/HD/NICHD NIH HHS/ -- R01 GM104962/GM/NIGMS NIH HHS/ -- R01 MH080442/MH/NIMH NIH HHS/ -- UL1RR024143/RR/NCRR NIH HHS/ -- Howard Hughes Medical Institute/ -- England -- Nature. 2012 Dec 20;492(7429):382-6. doi: 10.1038/nature11737. Epub 2012 Dec 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Howard Hughes Medical Institute, Laboratory of RNA Molecular Biology, The Rockefeller University, New York, New York 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23235829" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Sequence ; Binding Sites ; Brain/metabolism ; Child ; Child Development Disorders, Pervasive/genetics/metabolism ; Cross-Linking Reagents ; Female ; Fragile X Mental Retardation Protein/*genetics/*metabolism ; Gene Expression Regulation/*genetics ; HEK293 Cells ; Humans ; Immunoprecipitation ; Mice ; Molecular Sequence Data ; Multigene Family ; Mutation ; Ovary/metabolism/pathology ; Protein Biosynthesis/*genetics ; RNA, Messenger/*genetics/metabolism ; Regulatory Sequences, Ribonucleic Acid/*genetics ; Response Elements/genetics ; Signal Transduction ; Substrate Specificity
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 2
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    Circular RNAs are a large class of animal RNAs with regulatory potency (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-03-01
    Description: Circular RNAs (circRNAs) in animals are an enigmatic class of RNA with unknown function. To explore circRNAs systematically, we sequenced and computationally analysed human, mouse and nematode RNA. We detected thousands of well-expressed, stable circRNAs, often showing tissue/developmental-stage-specific expression. Sequence analysis indicated important regulatory functions for circRNAs. We found that a human circRNA, antisense to the cerebellar degeneration-related protein 1 transcript (CDR1as), is densely bound by microRNA (miRNA) effector complexes and harbours 63 conserved binding sites for the ancient miRNA miR-7. Further analyses indicated that CDR1as functions to bind miR-7 in neuronal tissues. Human CDR1as expression in zebrafish impaired midbrain development, similar to knocking down miR-7, suggesting that CDR1as is a miRNA antagonist with a miRNA-binding capacity ten times higher than any other known transcript. Together, our data provide evidence that circRNAs form a large class of post-transcriptional regulators. Numerous circRNAs form by head-to-tail splicing of exons, suggesting previously unrecognized regulatory potential of coding sequences.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Memczak, Sebastian -- Jens, Marvin -- Elefsinioti, Antigoni -- Torti, Francesca -- Krueger, Janna -- Rybak, Agnieszka -- Maier, Luisa -- Mackowiak, Sebastian D -- Gregersen, Lea H -- Munschauer, Mathias -- Loewer, Alexander -- Ziebold, Ulrike -- Landthaler, Markus -- Kocks, Christine -- le Noble, Ferdinand -- Rajewsky, Nikolaus -- England -- Nature. 2013 Mar 21;495(7441):333-8. doi: 10.1038/nature11928. Epub 2013 Feb 27.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Systems Biology of Gene Regulatory Elements, Max-Delbruck-Center for Molecular Medicine, Robert-Rossle-Strasse 10, 13125 Berlin, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23446348" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Autoantigens/genetics/metabolism ; Binding Sites ; Brain/metabolism ; Caenorhabditis elegans/genetics/metabolism ; Cell Line ; Conserved Sequence ; Female ; *Gene Expression Regulation ; HEK293 Cells ; Humans ; Male ; Mice ; MicroRNAs/genetics/metabolism ; Nerve Tissue Proteins/genetics/metabolism ; RNA/genetics/*metabolism ; Zebrafish/embryology/genetics/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
    Location Call Number Expected Availability
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