title: Genetic variability of microRNA regulome in human.
abstract: MicroRNAs are currently being extensively studied due to their important role as post-transcriptional regulators. During miRNA biogenesis, precursors undergo two cleavage steps performed by Drosha-DGCR8 (Microprocessor) cleaving of pri-miRNA to produce pre-miRNA and Dicer-mediated cleaving to create mature miRNA. Genetic variants within human miRNA regulome have been shown to influence miRNA expression, target interaction and to affect the phenotype. In this study, we reviewed the literature, existing bioinformatics tools and catalogs associated with polymorphic miRNA regulome, and organized them into four categories: (1) polymorphisms located within miRNA genes (miR-SNPs), (2) transcription factor-binding sites/miRNA regulatory regions (miR-rSNPs), (3) miRNA target sites (miR-TS-SNPs), and 4. miRNA silencing machinery (miR-SM-SNPs). Since the miR-SM-SNPs have not been systematically studied yet, we have collected polymorphisms associated with miRNA silencing machinery. We have developed two catalogs containing genetic variability within: (1) genes encoding three main catalytic components of the silencing machinery, DROSHA, DGCR8, and DICER1; (2) miRNA genes itself, overlapping Drosha and Dicer cleavage sites. The developed resource of polymorphisms is available online (http://www.integratomics-time.com/miRNA-regulome) and will be useful for further functional studies and development of biomarkers associated with diseases and phenotypic traits.
authors: University of Ljubljana, Biotechnical Faculty, Department of Animal Science Groblje 3, 1230, Domzale, Slovenia.
authors: Jana
authors: J
authors: Obsteter
authors: University of Ljubljana, Biotechnical Faculty, Department of Animal Science Groblje 3, 1230, Domzale, Slovenia.
authors: Peter
authors: P
authors: Dovc
authors: University of Ljubljana, Biotechnical Faculty, Department of Animal Science Groblje 3, 1230, Domzale, Slovenia.
authors: Tanja
authors: T
authors: Kunej
keywords: Biogenesis; Dicer; Drosha; human; microRNA (miRNA); polymorphisms
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