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Co- and post-transcriptional regulation of Rbm5 and Rbm10 in mouse cells as evidenced by tissue-specific, developmental and disease-associated variation of splice variant and protein expression levels
University of Skövde, School of Bioscience.
Biomolecular Sciences Program, Laurentian University, Sudbury, Canada.
Biomolecular Sciences Program, Laurentian University, Sudbury, Canada.
AMRIC, Health Sciences North, Sudbury, Canada.
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2016 (English)In: Gene, ISSN 0378-1119, E-ISSN 1879-0038, Vol. 580, no 1, 26-36 p.Article in journal (Refereed) Published
Abstract [en]

Background: Expression and function of the two RNA binding proteins and regulators of alternative splicing, RBM5 and RBM10, have largely been studied in human tissue and cell lines. The objective of the study described herein was to examine their expression in mouse tissue, in order to lay the framework for comprehensive functional studies using mouse models. Methods: All RNA variants of Rbm5 and Rbm10 were examined in a range of normal primary mouse tissues. RNA and protein were examined in differentiating C2C12 myoblasts and in denervated and dystonin-deficient mouse skeletal muscle. Results: All Rbm5 and Rbm10 variants examined were expressed in all mouse tissues and cell lines. In general, Rbm5 and Rbm10 RNA expression was higher in brain than in skin. RNA expression levels were more varied between cardiac and skeletal muscle, depending on the splice variant: for instance, Rbm10v1 RNA was higher in skeletal than cardiac muscle, whereas Rbm10v3 RNA was higher in cardiac than skeletal muscle. In mouse brain, cardiac and skeletal muscle, RNA encoding an approximately 17 kDa potential paralogue of a small human RBM10 isoform was detected, and the protein observed in myoblasts and myotubes. Expression of Rbm5 and Rbm10 RNA remained constant during C2C12 myogenesis, but protein levels significantly decreased. In two muscle disease models, neither Rbml 0 nor Rbm5 showed significant transcriptional changes, although significant specific alternative splicing changes of Rbm5 pre-mRNA were observed. Increased RBM10 protein levels were observed following denervation. Conclusions: The varied co-transcriptional and post-transcriptional regulation aspects of Rbm5 and Rbm10 expression associated with mouse tissues, myogenesis and muscle disease states suggest that a mouse model would be an interesting and useful model in which to study comprehensive functional aspects of RBM5 and RBM10. 

Place, publisher, year, edition, pages
Elsevier, 2016. Vol. 580, no 1, 26-36 p.
Keyword [en]
RBM5, RBM10, Gene expression, Mouse, Primary tissue, C2C12, Denervation
National Category
Basic Medicine Medical Biotechnology
Identifiers
URN: urn:nbn:se:his:diva-14217DOI: 10.1016/j.gene.2015.12.070ISI: 000370896100004PubMedID: 26784654Scopus ID: 2-s2.0-84957442593OAI: oai:DiVA.org:his-14217DiVA: diva2:1147883
Available from: 2017-10-09 Created: 2017-10-09 Last updated: 2017-10-09

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