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RESEARCH PRODUCT
Trans-Reactivation: A New Epigenetic Phenomenon Underlying Transcriptional Reactivation of Silenced Genes
Giulio PavesiAntonia M. R. IngrassiaDavide CoronaWalter ArancioMaria Cristina OnoratiVincenzo Cavalierisubject
MaleCancer ResearchPEV white Trans-reactivation Epigenetics Gynogenesis ncRNAsRNA Untranslatedlcsh:QH426-470Transcription GeneticHeterochromatinSettore BIO/11 - Biologia MolecolareGenes InsectBiologySettore MED/13 - EndocrinologiaRNA interferenceSettore BIO/10 - BiochimicaHeterochromatinGene clusterGene expressionGeneticsGene silencingAnimalsDrosophila ProteinsEpigeneticsCompound Eye ArthropodEye ProteinsMolecular BiologyGeneGenetics (clinical)Ecology Evolution Behavior and SystematicsAllelesGeneticsEye ColorRNAlcsh:GeneticsSettore BIO/18 - GeneticaDrosophila melanogasterATP-Binding Cassette TransportersFemaleRNA InterferenceResearch Articledescription
In order to study the role played by cellular RNA pools produced by homologous genomic loci in defining the transcriptional state of a silenced gene, we tested the effect of non-functional alleles of the white gene in the presence of a functional copy of white, silenced by heterochromatin. We found that non-functional alleles of white, unable to produce a coding transcript, could reactivate in trans the expression of a wild type copy of the same gene silenced by heterochromatin. This new epigenetic phenomenon of transcriptional trans-reactivation is heritable, relies on the presence of homologous RNA’s and is affected by mutations in genes involved in post-transcriptional gene silencing. Our data suggest a general new unexpected level of gene expression control mediated by homologous RNA molecules in the context of heterochromatic genes.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-08-20 | PLoS Genetics |