0000000000211174

AUTHOR

Irene Netchine

showing 2 related works from this author

New insights into the pathogenesis of Beckwith-Wiedemann and Silver-Russell syndromes: contribution of small copy number variations to 11p15 imprinti…

2011

International audience; The imprinted 11p15 region is organized in two domains, each of them under the control of its own imprinting control region (ICR1 for the IGF2/H19 domain and ICR2 for the KCNQ1OT1/CDKN1C domain). Disruption of 11p15 imprinting results in two fetal growth disorders with opposite phenotypes: the Beckwith-Wiedemann (BWS) and the Silver-Russell (SRS) syndromes. Various 11p15 genetic and epigenetic defects have been demonstrated in BWS and SRS. Among them, isolated DNA methylation defects account for approximately 60% of patients. To investigate whether cryptic copy number variations (CNVs) involving only part of one of the two imprinted domains account for 11p15 isolated…

MaleBeckwith–Wiedemann syndrome[SDV.GEN] Life Sciences [q-bio]/GeneticsMESH: Base SequenceMESH: DNA MethylationCopy-number variationImprinting (psychology)[SDV.BDD]Life Sciences [q-bio]/Development BiologyGenetics (clinical)GeneticsComparative Genomic Hybridization0303 health sciencesKCNQ1OT1MESH: Polymorphism Single Nucleotide030305 genetics & hereditycopy number variation11p15 regionPedigreegenomic imprintingMESH: Silver-Russell SyndromeDNA methylationBeckwith-Wiedemann syndromeFemaleMESH: DNA Copy Number VariationsMESH: Beckwith-Wiedemann SyndromeAdultDNA Copy Number VariationsMESH: PedigreeBiologyPolymorphism Single Nucleotide03 medical and health sciences[SDV.BDD] Life Sciences [q-bio]/Development BiologyGeneticsmedicineHumansEpigenetics030304 developmental biology[SDV.GEN]Life Sciences [q-bio]/GeneticsMESH: HumansBase SequenceChromosomes Human Pair 11MESH: AdultDNA Methylationmedicine.diseaseMESH: MaleMESH: Genomic ImprintingMESH: Comparative Genomic HybridizationUniparental IsodisomySilver-Russell syndromeMESH: Chromosomes Human Pair 11Genomic imprintingMESH: Femalefetal growthfetal growth.
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Germline correction of an epimutation related to Silver-Russell syndrome.

2015

Like genetic mutations, DNA methylation anomalies or epimutations can disrupt gene expression and lead to human diseases. However, unlike genetic mutations, epimutations can in theory be reverted through developmental epigenetic reprograming, which should limit their transmission across generations. Following the request for a parental project of a patient diagnosed with Silver-Russell syndrome (SRS), and the availability of both somatic and spermatozoa DNA from the proband and his father, we had the exceptional opportunity to evaluate the question of inheritance of an epimutation. We provide here for the first time evidence for efficient reversion of a constitutive epimutation in the sperm…

ProbandAdultMaleGenetic counselingRussell-Silver SyndromeBiologymedicine.disease_causeGermlineEpigenesis GeneticGenomic ImprintingGene OrderGeneticsmedicineHumansExomeEpigeneticsPromoter Regions GeneticMolecular BiologyGenetics (clinical)GeneticsMutationSilver–Russell syndromeHigh-Throughput Nucleotide SequencingGeneral MedicineDNA Methylationmedicine.diseaseSilver-Russell SyndromeGerm CellsPhenotypeGene Expression RegulationGenetic LociDNA methylationCpG IslandsFemaleRNA Long NoncodingHuman molecular genetics
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