0000000000512389

AUTHOR

Maria Margherita Mancardi

showing 2 related works from this author

Gain-of-function mutations in IFIH1 cause a spectrum of human disease phenotypes associated with upregulated type I interferon signaling.

2014

The type I interferon system is integral to human antiviral immunity. However, inappropriate stimulation or defective negative regulation of this system can lead to inflammatory disease. We sought to determine the molecular basis of genetically uncharacterized cases of the type I interferonopathy Aicardi-Goutières syndrome, and of other patients with undefined neurological and immunological phenotypes also demonstrating an upregulated type I interferon response. We found that heterozygous mutations in the cytosolic double-stranded RNA receptor gene IFIH1 (MDA5) cause a spectrum of neuro-immunological features consistently associated with an enhanced interferon state. Cellular and biochemica…

Models MolecularInterferon-Induced Helicase IFIH1Molecular Sequence DataHDE NEU PEDElectrophoretic Mobility Shift AssayBiologymedicine.disease_causeNervous System MalformationsReal-Time Polymerase Chain ReactionArticleDEAD-box RNA HelicasesImmune systemAutoimmune Diseases of the Nervous SystemDownregulation and upregulationAnalysis of Variance; Autoimmune Diseases of the Nervous System; Base Sequence; DEAD-box RNA Helicases; Electrophoretic Mobility Shift Assay; Exome; HEK293 Cells; Humans; Interferon Type I; Microsatellite Repeats; Molecular Sequence Data; Mutation; Nervous System Malformations; Real-Time Polymerase Chain Reaction; Sequence Analysis DNA; Signal Transduction; Spectrum Analysis; Models Molecular; Phenotype; GeneticsModelsInterferonGeneticsmedicineHumansExomeMutationAnalysis of VarianceBase SequenceSpectrum AnalysisMolecularRNAMDA5DNASequence Analysis DNAMolecular biology3. Good healthInterferon Tipo IHEK293 CellsPhenotypeInterferon Type IMutationCancer researchSignal transductionSequence AnalysisInterferon type Imedicine.drugMicrosatellite RepeatsSignal TransductionNature genetics
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HCN1 mutation spectrum: from neonatal epileptic encephalopathy to benign generalized epilepsy and beyond

2018

International audience; Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels control neuronal excitability and their dysfunction has been linked to epileptogenesis but few individuals with neurological disorders related to variants altering HCN channels have been reported so far. In 2014, we described five individuals with epileptic encephalopathy due to de novo HCN1 variants. To delineate HCN1-related disorders and investigate genotype-phenotype correlations further, we assembled a cohort of 33 unpublished patients with novel pathogenic or likely pathogenic variants: 19 probands carrying 14 different de novo mutations and four families with dominantly inherited variants segre…

0301 basic medicineProbandMaleModels MolecularPotassium Channels[SDV]Life Sciences [q-bio]Medizinmedicine.disease_causeEpileptogenesisMembrane PotentialsEpilepsy0302 clinical medicineHyperpolarization-Activated Cyclic Nucleotide-Gated ChannelsMissense mutationChildGeneticsMutationMiddle AgedPhenotype3. Good healthTransmembrane domainclinical spectrum; epilepsy; HCN1; intellectual disability; ion channelintellectual disabilityChild PreschoolEpilepsy GeneralizedFemaleSpasms InfantileAdultAdolescentCHO CellsBiology03 medical and health sciencesYoung AdultCricetulusHCN1medicineAnimalsHumansGeneralized epilepsyGenetic Association StudiesAgedInfantmedicine.diseaseElectric Stimulationclinical spectrum030104 developmental biologyMutationion channelMutagenesis Site-DirectedepilepsyNeurology (clinical)030217 neurology & neurosurgery
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