0000000000124259

AUTHOR

Nora Overlack

showing 11 related works from this author

Direct interaction of the Usher syndrome 1G protein SANS and myomegalin in the retina

2011

Contains fulltext : 96822.pdf (Publisher’s version ) (Closed access) The human Usher syndrome (USH) is the most frequent cause of combined hereditary deaf-blindness. USH is genetically heterogeneous with at least 11 chromosomal loci assigned to 3 clinical types, USH1-3. We have previously demonstrated that all USH1 and 2 proteins in the eye and the inner ear are organized into protein networks by scaffold proteins. This has contributed essentially to our current understanding of the function of USH proteins and explains why defects in proteins of different families cause very similar phenotypes. We have previously shown that the USH1G protein SANS (scaffold protein containing ankyrin repeat…

Scaffold proteinUsher syndromePhosphodiesterase 4D interacting protein (PDE4DIP)Muscle ProteinsPlasma protein bindingMice0302 clinical medicineYeastsChlorocebus aethiopsNuclear proteinCells CulturedGenetics0303 health scienceseducation.field_of_studyNuclear ProteinsCell biologyCOS CellssymbolsPhotoreceptor Cells VertebrateProtein BindingMicrotubule based transportNerve Tissue ProteinsBiologyModels BiologicalRetina03 medical and health sciencessymbols.namesakemedicineAnimalsHumanseducationMolecular BiologyAdaptor Proteins Signal Transducing030304 developmental biologyCell BiologyGlycostation disorders [IGMD 4]Golgi apparatusmedicine.diseaseMacaca mulattaMice Inbred C57BLCytoskeletal ProteinsPhotoreceptor cell functionMyomegalinGenetics and epigenetic pathways of disease Functional Neurogenomics [NCMLS 6]CattleAnkyrin repeatCiliary baseIntracellular transport030217 neurology & neurosurgerySensorineuronal degeneration
researchProduct

A comparative evaluation of NB30, NB54 and PTC124 in translational read-through efficacy for treatment of an USH1C nonsense mutation

2012

Translational read-through-inducing drugs (TRIDs) promote read-through of nonsense mutations, placing them in the spotlight of current gene-based therapeutic research. Here, we compare for the first time the relative efficacies of new-generation aminoglycosides NB30, NB54 and the chemical compound PTC124 on retinal toxicity and read-through efficacy of a nonsense mutation in the USH1C gene, which encodes the scaffold protein harmonin. This mutation causes the human Usher syndrome, the most common form of inherited deaf-blindness. We quantify read-through efficacy of the TRIDs in cell culture and show the restoration of harmonin function. We do not observe significant differences in the read…

MaleRetinal DisorderUsher syndromemedia_common.quotation_subjectNonsenseNonsense mutationPeptide Chain Elongation TranslationalCell Cycle ProteinsIn Vitro TechniquesBiologyPharmacologymedicine.disease_causeRetinaCell LineMice03 medical and health scienceschemistry.chemical_compound0302 clinical medicineRetinal DiseasesIn vivoretinitis pigmentosaRetinitis pigmentosaotorhinolaryngologic diseasesmedicineAnimalsHumansResearch ArticlesAdaptor Proteins Signal Transducingpharmacogenetics030304 developmental biologymedia_commonOxadiazoles0303 health sciencesMutationsensoneuronal degenerationRetinalmedicine.diseasedrug therapy3. Good healthMice Inbred C57BLCytoskeletal ProteinsAminoglycosideschemistryCodon NonsenseMolecular MedicineFemaleUsher syndrome030217 neurology & neurosurgeryEMBO Molecular Medicine
researchProduct

Beneficial Read-Through of aUSH1CNonsense Mutation by Designed Aminoglycoside NB30 in the Retina

2010

PURPOSE. The human Usher syndrome (USH) is the most frequent cause of inherited combined deaf-blindness. USH is clinically and genetically heterogeneous, assigned to three clinical types. The most severe type is USH1, characterized by profound inner ear defects and retinitis pigmentosa. Thus far, no effective treatment for the ophthalmic component of USH exists. The p.R31X nonsense mutation in USH1C leads to a disease causing premature termination of gene translation. Here, we investigated the capability of the novel synthetic aminoglycoside NB30 for the translational read-through of the USH1C-p.R31X nonsense mutation as a retinal therapy option. METHODS. Read-through of p.R31X by three com…

ParomomycinUsher syndromeBlotting WesternNonsense mutationCell Culture TechniquesGene ExpressionCell Cycle ProteinsParomomycinBiologyPharmacologyTransfectionRetinaMice03 medical and health scienceschemistry.chemical_compound0302 clinical medicineRetinitis pigmentosaIn Situ Nick-End Labelingotorhinolaryngologic diseasesmedicineAnimalsHumansAdaptor Proteins Signal Transducing030304 developmental biologyGenetics0303 health sciencesRetinaDose-Response Relationship DrugAminoglycosideRetinalmedicine.disease3. Good healthMice Inbred C57BLCytoskeletal ProteinsAminoglycosidesElectroporationHEK293 Cellsmedicine.anatomical_structureMicroscopy FluorescencechemistryCodon NonsenseProtein BiosynthesisGentamicinGentamicins030217 neurology & neurosurgerymedicine.drugInvestigative Opthalmology & Visual Science
researchProduct

Gene-based treatment options for Usher type 1C by translational read-through of a nonsense mutation

2012

The Usher syndrome (USH) is the most frequent cause of inherited combined deaf-blindness. The ciliopathy is clinically and genetically heterogeneous, assigned to three clinical USH types of which the most severe type is USH1. The USH1C gene encodes the PDZ containing scaffold protein harmonin which is expressed in form of numerous alternatively spliced variants. Hamonin binds directly to all USH1/2 proteins and is a key organizer of USH protein networks in photoreceptor cells. So far no effective treatment for the ophthalmic component of USH exists. Translational read-through was introduced as an innovative therapy option for several non-ocular diseases caused by nonsense mutations leading …

Scaffold proteinGeneticslcsh:CytologyUsher syndromePDZ domainNonsense mutationCell BiologyBiologymedicine.diseaseCiliopathiesPhotoreceptor cellCell biologyCiliopathymedicine.anatomical_structureotorhinolaryngologic diseasesmedicineOral Presentationlcsh:QH573-671GeneCilia
researchProduct

Intravitreal delivery of AAV-NDI1 provides functional benefit in a murine model of Leber hereditary optic neuropathy.

2012

Leber hereditary optic neuropathy (LHON) is a mitochondrially inherited form of visual dysfunction caused by mutations in several genes encoding subunits of the mitochondrial respiratory NADH-ubiquinone oxidoreductase complex (complex I). Development of gene therapies for LHON has been impeded by genetic heterogeneity and the need to deliver therapies to the mitochondria of retinal ganglion cells (RGCs), the cells primarily affected in LHON. The therapy under development entails intraocular injection of a nuclear yeast gene NADH-quinone oxidoreductase (NDI1) that encodes a single subunit complex I equivalent and as such is mutation independent. NDI1 is imported into mitochondria due to an e…

Oxidoreductase complexRetinal Ganglion CellsretinaSaccharomyces cerevisiae Proteinsgenetic structuresGenetic enhancementProtein subunitGenetic VectorsOptic Atrophy Hereditary LeberBiologyMitochondrionmedicine.disease_causeRetinal ganglionArticleMiceLHONGeneticsmedicineAnimalsHumansGenetics (clinical)GeneticsRetinaMutationElectron Transport Complex IGenetic heterogeneityAAVDependovirusgene therapyeye diseasesmitochondriaDisease Models AnimalOptic AtrophyNDI1medicine.anatomical_structureIntravitreal InjectionsCancer researchsense organsMicrotubule-Associated ProteinsEuropean journal of human genetics : EJHG
researchProduct

Scaffold protein harmonin (USH1C) provides molecular links between Usher syndrome type 1 and type 2.

2005

Contains fulltext : 48386.pdf (Publisher’s version ) (Closed access) Usher syndrome (USH) is the most frequent cause of combined deaf-blindness in man. USH is clinically and genetically heterogeneous with at least 11 chromosomal loci assigned to the three USH types (USH1A-G, USH2A-C, USH3A). Although the different USH types exhibit almost the same phenotype in human, the identified USH genes encode for proteins which belong to very different protein classes and families. We and others recently reported that the scaffold protein harmonin (USH1C-gene product) integrates all identified USH1 molecules in a USH1-protein network. Here, we investigated the relationship between the USH2 molecules a…

Scaffold proteinGenetics and epigenetic pathways of disease [NCMLS 6]Usher syndromeStereocilia (inner ear)Cell Cycle ProteinsBiologyInteractomeReceptors G-Protein-CoupledMiceotorhinolaryngologic diseasesGeneticsmedicineAnimalsNeurosensory disorders [UMCN 3.3]Photoreceptor CellsRats WistarMolecular BiologyGeneGenetics (clinical)Renal disorder [IGMD 9]GeneticsExtracellular Matrix ProteinsStereociliumBinding SitesHair Cells Auditory InnerSodium-Bicarbonate SymportersUsher Syndrome Type 1General Medicinemedicine.diseasePhenotypeRatsMice Inbred C57BLCytoskeletal ProteinsCarrier ProteinsUsher Syndromes
researchProduct

SANS (USH1G) expression in developing and mature mammalian retina

2008

AbstractThe human Usher syndrome (USH) is the most common form of combined deaf-blindness. Usher type I (USH1), the most severe form, is characterized by profound congenital deafness, constant vestibular dysfunction and prepubertal-onset of retinitis pigmentosa. Five corresponding genes of the six USH1 genes have been cloned so far. The USH1G gene encodes the SANS (scaffold protein containing ankyrin repeats and SAM domain) protein which consists of protein motifs known to mediate protein–protein interactions. Recent studies indicated SANS function as a scaffold protein in the protein interactome related to USH.Here, we generated specific antibodies for SANS protein expression analyses. Our…

Retinal degenerationScaffold proteinBlotting WesternNerve Tissue ProteinsBiologyRibbon synapseRats Inbred WKYPhotoreceptor cellRetinaMiceXenopus laevisAntibody SpecificityCiliogenesisConnecting ciliumRetinitis pigmentosamedicineAnimalsCiliaEye ProteinsCentrosomeRetinaCiliogenesisPhotoreceptor cellsCiliumImmune SeraCiliary BodyFibroblastsmedicine.diseaseSynapseSensory SystemsCell biologyRatsMice Inbred C57BLOphthalmologymedicine.anatomical_structureSynapsesRetinal developmentsense organsUsher SyndromesUsher syndromePhotoreceptor Cells VertebrateSynaptosomesVision Research
researchProduct

PTC124-mediated translational readthrough of a nonsense mutation causing Usher syndrome type 1C.

2011

We investigated the therapeutic potential of the premature termination codon (PTC) readthrough-inducing drug PTC124 in treating the retinal phenotype of Usher syndrome, caused by a nonsense mutation in the USH1C gene. Applications in cell culture, organotypic retina cultures, and mice in vivo revealed significant readthrough and the recovery of protein function. In comparison with other readthrough drugs, namely the clinically approved readthrough-inducing aminoglycoside gentamicin, PTC124 exhibits significant better retinal biocompatibility. Its high readthrough efficiency in combination with excellent biocompatibility makes PTC124 a promising therapeutic agent for PTCs in USH1C, as well a…

virusesUsher syndromeGenetic enhancementNonsense mutationGenetic VectorsCell Cycle ProteinsRetina03 medical and health scienceschemistry.chemical_compoundMice0302 clinical medicineIn vivootorhinolaryngologic diseasesGeneticsmedicineAnimalsHumansMolecular BiologyCells Cultured030304 developmental biologyAdaptor Proteins Signal TransducingGenetics0303 health sciencesOxadiazolesbusiness.industryfungiAminoglycosideTranslational readthroughmedicine.diseasePhenotype3. Good healthAtalurenMice Inbred C57BLCytoskeletal ProteinsLuminescent ProteinsElectroporationchemistryMicroscopy FluorescenceCodon NonsenseCancer researchMolecular MedicineGentamicinsbusinessUsher Syndromes030217 neurology & neurosurgeryHuman gene therapy
researchProduct

The Usher syndrome 1G protein SANS participates in the transport of ciliary cargo in photoreceptor cells

2012

Human Usher syndrome (USH) is the most common form of combined deaf-blindness, characterized by profound congenital deafness, constant vestibular dysfunction and pre-pubertal onset of retinitis pigmentosa. The USH1G protein SANS (scaffold protein containing ankyrin repeats and SAM domain) is associated with microtubules and mediates a transport related periciliary protein network in photoreceptor cells. Here we aim to enlighten the involvement of SANS in ciliary transport of photoreceptor cells by identifying proteins associated with SANS in transport complexes. In Y2H screen of retinal cDNA library we identified the direct binding of SANS to dynactin-1 (p150Glued), a subunit of the dynacti…

Scaffold proteinRetinal degenerationGeneticsOpsinlcsh:CytologyProtein subunitCiliumCell BiologyBiologymedicine.diseaseOpsin transportCell biologyMicrotubuleRetinitis pigmentosaPoster Presentationmedicinesense organslcsh:QH573-671Cilia
researchProduct

A novel Usher protein network at the periciliary reloading point between molecular transport machineries in vertebrate photoreceptor cells.

2008

Contains fulltext : 69178.pdf (Publisher’s version ) (Closed access) The human Usher syndrome (USH) is the most frequent cause of combined deaf-blindness. USH is genetically heterogeneous with at least 12 chromosomal loci assigned to three clinical types, USH1-3. Although these USH types exhibit similar phenotypes in human, the corresponding gene products belong to very different protein classes and families. The scaffold protein harmonin (USH1C) was shown to integrate all identified USH1 and USH2 molecules into protein networks. Here, we analyzed a protein network organized in the absence of harmonin by the scaffold proteins SANS (USH1G) and whirlin (USH2D). Immunoelectron microscopic anal…

Scaffold proteinGenetics and epigenetic pathways of disease [NCMLS 6]XenopusCell Cycle ProteinsNerve Tissue ProteinsBiologyIn Vitro TechniquesNeuroinformatics [DCN 3]TransfectionModels BiologicalReceptors G-Protein-CoupledMiceChlorocebus aethiopsProtein Interaction MappingGeneticsPerception and Action [DCN 1]otorhinolaryngologic diseasesAnimalsHumansNeurosensory disorders [UMCN 3.3]Cell Cycle ProteinMicroscopy ImmunoelectronMolecular BiologyIntegral membrane proteinGenetics (clinical)Adaptor Proteins Signal TransducingRenal disorder [IGMD 9]GeneticsMice KnockoutExtracellular Matrix ProteinsCiliumSignal transducing adaptor proteinMembrane ProteinsGeneral MedicineTransmembrane proteinCell biologyMice Inbred C57BLCytoskeletal ProteinsEctodomainGenetic defects of metabolism [UMCN 5.1]COS CellsNIH 3T3 CellsCervical collarUsher SyndromesFunctional Neurogenomics [DCN 2]Photoreceptor Cells VertebrateSubcellular FractionsImmunity infection and tissue repair [NCMLS 1]
researchProduct

Gene Repair of an Usher Syndrome Causing Mutation by Zinc-Finger Nuclease Mediated Homologous Recombination

2012

PURPOSE. Human Usher syndrome (USH) is the most frequent cause of inherited deaf-blindness. It is clinically and genetically heterogeneous, assigned to three clinical types of which the most severe type is USH1. No effective treatment for the ophthalmic component of USH exists. Gene augmentation is an attractive strategy for hereditary retinal diseases. However, several USH genes, like USH1C, are expressed in various isoforms, hampering gene augmentation. As an alternative treatment strategy, we applied the zinc-finger nuclease (ZFN) technology for targeted gene repair of an USH1C, causing mutation by homologous recombination. METHODS. We designed ZFNs customized for the p.R31X nonsense mut…

Gene isoformNonsense mutationCell Cycle ProteinsBiologyRetinaCell Linechemistry.chemical_compoundHumansDNA Breaks Double-StrandedDNA CleavageHomologous RecombinationGeneAdaptor Proteins Signal TransducingZinc fingerGeneticsTargeted Gene RepairfungiZinc FingersDNAEndonucleasesZinc finger nucleaseCytoskeletal ProteinschemistryCodon NonsenseHomologous recombinationUsher SyndromesDNATargeted Gene RepairInvestigative Opthalmology & Visual Science
researchProduct