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Identification of common carp (Cyprinus carpio) microRNAs and microRNA-related SNPs

文献类型： 外文期刊

作者： Zhu, Ya-Ping 1 ; Xue, Wei 1 ; Wang, Jin-Tu 1 ; Wan, Yu-Mei 1 ; Wang, Shao-Lin 3 ; Xu, Peng 1 ; Zhang, Yan 1 ; Li, Jiong-T 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Ctr Appl Aquat Genom, Beijing 100141, Peoples R China

2.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China

3.Univ Virginia, Dept Psychiat & Neurobiol Sci, Charlottesville, VA 22911 USA

关键词： miRNAs;Targets;SNPs;miRNA biogenesis;Common carp

期刊名称：BMC GENOMICS （ 影响因子：3.969； 五年影响因子：4.478 ）

ISSN： 1471-2164

年卷期： 2012 年 13 卷

页码：

收录情况： SCI

摘要： Background: MicroRNAs (miRNAs) exist pervasively across viruses, plants and animals and play important roles in the post-transcriptional regulation of genes. In the common carp, miRNA targets have not been investigated. In model species, single-nucleotide polymorphisms (SNPs) have been reported to impair or enhance miRNA regulation as well as to alter miRNA biogenesis. SNPs are often associated with diseases or traits. To date, no studies into the effects of SNPs on miRNA biogenesis and regulation in the common carp have been reported. Results: Using homology-based prediction combined with small RNA sequencing, we have identified 113 common carp mature miRNAs, including 92 conserved miRNAs and 21 common carp specific miRNAs. The conserved miRNAs had significantly higher expression levels than the specific miRNAs. The miRNAs were clustered into three phylogenetic groups. Totally 394 potential miRNA binding sites in 206 target mRNAs were predicted for 83 miRNAs. We identified 13 SNPs in the miRNA precursors. Among them, nine SNPs had the potential to either increase or decrease the energy of the predicted secondary structures of the precursors. Further, two SNPs in the 3' untranslated regions of target genes were predicted to either disturb or create miRNA-target interactions. Conclusions: The common carp miRNAs and their target genes reported here will help further our understanding of the role of miRNAs in gene regulation. The analysis of the miRNA-related SNPs and their effects provided insights into the effects of SNPs on miRNA biogenesis and function. The resource data generated in this study will help advance the study of miRNA function and phenotype-associated miRNA identification.

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