Search results for "Polypyrimidine Tract-Binding Protein"

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High Throughput Sequencing Identifies Misregulated Genes in the Drosophila Polypyrimidine Tract-Binding Protein (hephaestus) Mutant Defective in Sper…

2015

The Drosophila polypyrimidine tract-binding protein (dmPTB or hephaestus) plays an important role during spermatogenesis. The heph2 mutation in this gene results in a specific defect in spermatogenesis, causing aberrant spermatid individualization and male sterility. However, the array of molecular defects in the mutant remains uncharacterized. Using an unbiased high throughput sequencing approach, we have identified transcripts that are misregulated in this mutant. Aberrant transcripts show altered expression levels, exon skipping, and alternative 5' ends. We independently verified these findings by reverse-transcription and polymerase chain reaction (RT-PCR) analysis. Our analysis shows m…

0301 basic medicineMalePhysiologyMutantGene Expressionlcsh:MedicineArtificial Gene Amplification and ExtensionPolymerase Chain ReactionBiochemistryConserved sequence0302 clinical medicineSequencing techniquesReproductive PhysiologyAnimal CellsInvertebrate GenomicsMedicine and Health SciencesDrosophila ProteinsProtein IsoformsCell Cycle and Cell Divisionlcsh:ScienceConserved SequencePhylogenyGeneticsRegulation of gene expressionMultidisciplinarybiologyChromosome BiologyDrosophila MelanogasterMessenger RNAHigh-Throughput Nucleotide SequencingRNA sequencingAnimal ModelsGenomicsSpermatidsInsectsNucleic acidsMeiosisCell ProcessesDrosophilaDrosophila melanogasterTranscription Initiation SiteCellular TypesDrosophila ProteinPolypyrimidine Tract-Binding ProteinResearch ArticleArthropodaMolecular Sequence DataReal-Time Polymerase Chain ReactionResearch and Analysis Methods03 medical and health sciencesModel OrganismsGeneticsAnimalsPolypyrimidine tract-binding proteinRNA MessengerSpermatogenesisMolecular Biology TechniquesMolecular BiologyBinding SitesBase SequenceGene Expression Profilinglcsh:ROrganismsBiology and Life SciencesCell BiologyReverse Transcriptase-Polymerase Chain Reactionbiology.organism_classificationInvertebratesExon skippingSpermGene expression profiling030104 developmental biologyGene OntologyGerm CellsGene Expression RegulationAnimal GenomicsMutationbiology.proteinRNAlcsh:QTranscriptome030217 neurology & neurosurgeryPLoS ONE
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The polypyrimidine tract-binding protein (PTB) is involved in the post-transcriptional regulation of human inducible nitric oxide synthase expression.

2006

Human inducible nitric oxide synthase (iNOS) expression is regulated by transcriptional and post-transcriptional mechanisms. We have recently shown that the multifunctional RNA-binding proteins KH-type splicing regulatory protein and tristetraprolin are critically involved in the post-transcriptional regulation of human iNOS expression. Several reports have shown that KH-type splicing regulatory protein colocalizes with the polypyrimidine tract-binding protein (PTB), and both RNA-binding proteins seem to interact with the same mRNAs. Therefore we analyzed the involvement of PTB in human iNOS expression. In human DLD-1 cells, cytokine incubation necessary to induce iNOS expression did not ch…

Recombinant Fusion ProteinsTristetraprolinGreen Fluorescent ProteinsNitric Oxide Synthase Type IImacromolecular substancesBiologyIn Vitro TechniquesTransfectionenvironment and public healthBiochemistryGene Expression Regulation EnzymologicCell LineCell Line TumorHumansPolypyrimidine tract-binding proteinRNA MessengerEnzyme InhibitorsPromoter Regions GeneticMolecular BiologyPost-transcriptional regulationRegulation of gene expressionMessenger RNAintegumentary systemCarcinomaEpithelial CellsCell BiologyTransfectionMolecular biologyNitric oxide synthaseRNA splicingColonic Neoplasmsbiology.proteinCytokinesRNA InterferenceProtein Processing Post-TranslationalDichlororibofuranosylbenzimidazolePolypyrimidine Tract-Binding ProteinThe Journal of biological chemistry
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