Copy Number Variations Burden on miRNA Genes Reveals Layers of Complexities Involved in the Regulation of Pathways and Phenotypic Expression

MicroRNAs are involved in post-transcriptional down-regulation of gene expression. Variations in miRNA genes can severely affect downstream-regulated genes and their pathways. However, population-specific burden of CNVs on miRNA genes and the complexities created towards the phenotype is not known....

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Detalles Bibliográficos
Autores principales: Veerappa, Avinash M., N, Megha Murthy, Vishweswaraiah, Sangeetha, Lingaiah, Kusuma, Suresh, Raviraj V., Nachappa, Somanna Ajjamada, Prashali, Nelchi, Yadav, Sangeetha Nuggehalli, Srikanta, Manjula Arsikere, Manjegowda, Dinesh S., Seshachalam, Keshava B., Ramachandra, Nallur B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2014
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3938728/
https://www.ncbi.nlm.nih.gov/pubmed/24587348
http://dx.doi.org/10.1371/journal.pone.0090391
Descripción
Sumario:MicroRNAs are involved in post-transcriptional down-regulation of gene expression. Variations in miRNA genes can severely affect downstream-regulated genes and their pathways. However, population-specific burden of CNVs on miRNA genes and the complexities created towards the phenotype is not known. From a total of 44109 CNVs investigated from 1715 individuals across 12 populations using high-throughput arrays, 4007 miRNA-CNVs (∼9%) consisting 6542 (∼5%) miRNA genes with a total of 333 (∼5%) singleton miRNA genes were identified. We found miRNA-CNVs across the genomes of individuals showing multiple hits in many targets, co-regulated under the same pathway. This study proposes four mechanisms unraveling the many complexities in miRNA genes, targets and co-regulated miRNA genes towards establishment of phenotypic diversity.

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