Overexpression of microRNA-206 in the skeletal muscle from myotonic dystrophy type 1 patients
<p>Abstract</p> <p>Background</p> <p>MicroRNAs are highly conserved, noncoding RNAs involved in post-transcriptional gene silencing. They have been shown to participate in a wide range of biological processes, including myogenesis and muscle regeneration. The goal of th...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2010-05-01
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| Series: | Journal of Translational Medicine |
| Online Access: | http://www.translational-medicine.com/content/8/1/48 |
| _version_ | 1811265548643729408 |
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| author | Angelini Corrado Loro Emanuele Viola Antonella Lepore Saverio M Rinaldi Fabrizio Gambardella Stefano Vergani Lodovica Novelli Giuseppe Botta Annalisa |
| author_facet | Angelini Corrado Loro Emanuele Viola Antonella Lepore Saverio M Rinaldi Fabrizio Gambardella Stefano Vergani Lodovica Novelli Giuseppe Botta Annalisa |
| author_sort | Angelini Corrado |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Background</p> <p>MicroRNAs are highly conserved, noncoding RNAs involved in post-transcriptional gene silencing. They have been shown to participate in a wide range of biological processes, including myogenesis and muscle regeneration. The goal of this study is to test the hypothesis that myo-miRs (myo = muscle + miR = miRNA) expression is altered in muscle from patients affected by myotonic dystrophy type 1 (DM1), the most frequently inherited neuromuscular disease in adults. In order to gain better insights about the role of miRNAs in the DM1 pathogenesis, we have also analyzed the muscular expression of miR-103 and miR-107, which have been identified <it>in silico </it>as attractive candidates for binding to the <it>DMPK </it>mRNA.</p> <p>Methods</p> <p>To this aim, we have profiled the expression of miR-133 (miR-133a, miR-133b), miR-1, miR-181 (miR-181a, miR-181b, miR-181c) and miR-206, that are specifically induced during myogenesis in cardiac and skeletal muscle tissues. miR-103 and miR-107, highly expressed in brain, heart and muscle have also been included in this study. QRT-PCR experiments have been performed on RNA from vastus lateralis biopsies of DM1 patients (n = 7) and control subjects (n = 4). Results of miRNAs expression have been confirmed by Northern blot, whereas <it>in situ </it>hybridization technique have been performed to localize misexpressed miRNAs on muscle sections from DM1 and control individuals.</p> <p>Results</p> <p>Only miR-206 showed an over-expression in 5 of 7 DM1 patients (threshold = 2, fold change between 1.20 and 13.22, average = 5.37) compared to the control group. This result has been further confirmed by Northern blot analysis (3.37-fold overexpression, <it>R</it><sup>2 </sup>= 0.89). <it>In situ </it>hybridization localized miR-206 to nuclear site both in normal and DM1 tissues. Cellular distribution in DM1 tissues includes also the nuclear regions of centralized nuclei, with a strong signal corresponding to nuclear clumps.</p> <p>Conclusions</p> <p>This work provides, for the first time, evidences about miRNAs misexpression in DM1 muscle tissues, adding a new element in the pathogenesis of this complex genetic disease.</p> |
| first_indexed | 2024-04-12T20:25:43Z |
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| institution | Directory Open Access Journal |
| issn | 1479-5876 |
| language | English |
| last_indexed | 2024-04-12T20:25:43Z |
| publishDate | 2010-05-01 |
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| series | Journal of Translational Medicine |
| spelling | doaj.art-13572573806e427ab5d09811a2801e8f2022-12-22T03:17:52ZengBMCJournal of Translational Medicine1479-58762010-05-01814810.1186/1479-5876-8-48Overexpression of microRNA-206 in the skeletal muscle from myotonic dystrophy type 1 patientsAngelini CorradoLoro EmanueleViola AntonellaLepore Saverio MRinaldi FabrizioGambardella StefanoVergani LodovicaNovelli GiuseppeBotta Annalisa<p>Abstract</p> <p>Background</p> <p>MicroRNAs are highly conserved, noncoding RNAs involved in post-transcriptional gene silencing. They have been shown to participate in a wide range of biological processes, including myogenesis and muscle regeneration. The goal of this study is to test the hypothesis that myo-miRs (myo = muscle + miR = miRNA) expression is altered in muscle from patients affected by myotonic dystrophy type 1 (DM1), the most frequently inherited neuromuscular disease in adults. In order to gain better insights about the role of miRNAs in the DM1 pathogenesis, we have also analyzed the muscular expression of miR-103 and miR-107, which have been identified <it>in silico </it>as attractive candidates for binding to the <it>DMPK </it>mRNA.</p> <p>Methods</p> <p>To this aim, we have profiled the expression of miR-133 (miR-133a, miR-133b), miR-1, miR-181 (miR-181a, miR-181b, miR-181c) and miR-206, that are specifically induced during myogenesis in cardiac and skeletal muscle tissues. miR-103 and miR-107, highly expressed in brain, heart and muscle have also been included in this study. QRT-PCR experiments have been performed on RNA from vastus lateralis biopsies of DM1 patients (n = 7) and control subjects (n = 4). Results of miRNAs expression have been confirmed by Northern blot, whereas <it>in situ </it>hybridization technique have been performed to localize misexpressed miRNAs on muscle sections from DM1 and control individuals.</p> <p>Results</p> <p>Only miR-206 showed an over-expression in 5 of 7 DM1 patients (threshold = 2, fold change between 1.20 and 13.22, average = 5.37) compared to the control group. This result has been further confirmed by Northern blot analysis (3.37-fold overexpression, <it>R</it><sup>2 </sup>= 0.89). <it>In situ </it>hybridization localized miR-206 to nuclear site both in normal and DM1 tissues. Cellular distribution in DM1 tissues includes also the nuclear regions of centralized nuclei, with a strong signal corresponding to nuclear clumps.</p> <p>Conclusions</p> <p>This work provides, for the first time, evidences about miRNAs misexpression in DM1 muscle tissues, adding a new element in the pathogenesis of this complex genetic disease.</p>http://www.translational-medicine.com/content/8/1/48 |
| spellingShingle | Angelini Corrado Loro Emanuele Viola Antonella Lepore Saverio M Rinaldi Fabrizio Gambardella Stefano Vergani Lodovica Novelli Giuseppe Botta Annalisa Overexpression of microRNA-206 in the skeletal muscle from myotonic dystrophy type 1 patients Journal of Translational Medicine |
| title | Overexpression of microRNA-206 in the skeletal muscle from myotonic dystrophy type 1 patients |
| title_full | Overexpression of microRNA-206 in the skeletal muscle from myotonic dystrophy type 1 patients |
| title_fullStr | Overexpression of microRNA-206 in the skeletal muscle from myotonic dystrophy type 1 patients |
| title_full_unstemmed | Overexpression of microRNA-206 in the skeletal muscle from myotonic dystrophy type 1 patients |
| title_short | Overexpression of microRNA-206 in the skeletal muscle from myotonic dystrophy type 1 patients |
| title_sort | overexpression of microrna 206 in the skeletal muscle from myotonic dystrophy type 1 patients |
| url | http://www.translational-medicine.com/content/8/1/48 |
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