PUBLICATION
Evolution and Distribution of Teleost myomiRNAs: Functionally Diversified myomiRs in Teleosts
- Authors
- Siddique, B.S., Kinoshita, S., Wongkarangkana, C., Asakawa, S., Watabe, S.
- ID
- ZDB-PUB-170425-10
- Date
- 2016
- Source
- Marine biotechnology (New York, N.Y.) 18: 436-47 (Journal)
- Registered Authors
- Kinoshita, Shigeharu, Watabe, Shugo
- Keywords
- Myosin heavy chain, Teleost, miR-499, miR-736, microRNA, myomiR
- MeSH Terms
-
- Myocardium/metabolism*
- Oryzias/genetics
- Oryzias/growth & development
- Oryzias/metabolism
- Species Specificity
- Biological Evolution
- Myosin Heavy Chains/genetics*
- Myosin Heavy Chains/metabolism
- Phylogeny*
- Multigene Family
- Gene Expression Regulation, Developmental
- Zebrafish/genetics
- Zebrafish/growth & development
- Zebrafish/metabolism
- Larva/genetics
- Larva/growth & development
- Larva/metabolism
- Organ Specificity
- Animals
- Heart Atria/growth & development
- Heart Atria/metabolism
- Fish Proteins/genetics*
- Fish Proteins/metabolism
- MicroRNAs/genetics*
- MicroRNAs/metabolism
- Humans
- Embryo, Nonmammalian
- Protein Isoforms/genetics
- Protein Isoforms/metabolism
- Gene Library
- Computational Biology
- Heart Ventricles/growth & development
- Heart Ventricles/metabolism
- Takifugu/genetics*
- Takifugu/growth & development
- Takifugu/metabolism
- PubMed
- 27262998 Full text @ Mar. Biotechnol.
Citation
Siddique, B.S., Kinoshita, S., Wongkarangkana, C., Asakawa, S., Watabe, S. (2016) Evolution and Distribution of Teleost myomiRNAs: Functionally Diversified myomiRs in Teleosts. Marine biotechnology (New York, N.Y.). 18:436-47.
Abstract
Myosin heavy chain (MYH) genes belong to a multigene family, and the regulated expression of each member determines the physiological and contractile muscle properties. Among these, MYH6, MYH7, and MYH14 occupy unique positions in the mammalian MYH gene family because of their specific expression in slow/cardiac muscles and the existence of intronic micro(mi) RNAs. MYH6, MYH7, and MYH14 encode miR-208a, miR-208b, and miR-499, respectively. These MYH encoded miRNAs are designated as myomiRs because of their muscle-specific expression and functions. In mammals, myomiRs and host MYHs form a transcription network involved in muscle fiber-type specification; thus, genomic positions and expression patterns of them are well conserved. However, our previous studies revealed divergent distribution and expression of MYH14/miR-499 among teleosts, suggesting the unique evolution of myomiRs and host MYHs in teleosts. Here, we examined distribution and expression of myomiRs and host MYHs in various teleost species. The major cardiac MYH isoforms in teleosts are an intronless gene, atrial myosin heavy chain (amhc), and ventricular myosin heavy chain (vmhc) gene that encodes an intronic miRNA, miR-736. Phylogenetic analysis revealed that vmhc/miR-736 is a teleost-specific myomiR that differed from tetrapoda MYH6/MYH7/miR-208s. Teleost genomes also contain species-specific orthologs in addition to vmhc and amhc, indicating complex gene duplication and gene loss events during teleost evolution. In medaka and torafugu, miR-499 was highly expressed in slow/cardiac muscles whereas the expression of miR-736 was quite low and not muscle specific. These results suggest functional diversification of myomiRs in teleost with the diversification of host MYHs.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping