Search results for "AU Rich Elements"

showing 3 items of 3 documents

Yeast Cth2 protein represses the translation of ARE-containing mRNAs in response to iron deficiency

2018

In response to iron deficiency, the budding yeast Saccharomyces cerevisiae undergoes a metabolic remodeling in order to optimize iron utilization. The tandem zinc finger (TZF)-containing protein Cth2 plays a critical role in this adaptation by binding and promoting the degradation of multiple mRNAs that contain AU-rich elements (AREs). Here, we demonstrate that Cth2 also functions as a translational repressor of its target mRNAs. By complementary approaches, we demonstrate that Cth2 protein inhibits the translation of SDH4, which encodes a subunit of succinate dehydrogenase, and CTH2 mRNAs in response to iron depletion. Both the AREs within SDH4 and CTH2 transcripts, and the Cth2 TZF are es…

0301 basic medicineCancer ResearchRNA StabilityAdaptation BiologicalGene ExpressionBiochemistryGene Expression Regulation FungalGene expressionMedicine and Health SciencesExpressió genèticaGenetics (clinical)Regulation of gene expressionZinc fingerbiologyMessenger RNANutritional DeficienciesEukaryotaTranslation (biology)Iron DeficienciesCell biologyNucleic acidsDNA-Binding ProteinsCellular Structures and OrganellesResearch ArticleSaccharomyces cerevisiae Proteinslcsh:QH426-470IronProtein subunitSaccharomyces cerevisiaeSaccharomyces cerevisiaeDNA constructionRegulatory Sequences Ribonucleic Acid03 medical and health sciencesExtraction techniquesTristetraprolinPolysomeGeneticsRNA MessengerMolecular BiologyEcology Evolution Behavior and SystematicsNutritionAU Rich ElementsAU-rich elementBiology and life sciencesOrganismsFungiCell Biologybiology.organism_classificationYeastRNA extractionResearch and analysis methodslcsh:GeneticsMolecular biology techniques030104 developmental biologyPolyribosomesPlasmid ConstructionIron DeficiencyRNAProtein TranslationRibosomesTranscription Factors
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Tristetraprolin regulation of interleukin-22 production

2015

AbstractInterleukin (IL)-22 is a STAT3-activating cytokine displaying characteristic AU-rich elements (ARE) in the 3′-untranslated region (3′-UTR) of its mRNA. This architecture suggests gene regulation by modulation of mRNA stability. Since related cytokines undergo post-transcriptional regulation by ARE-binding tristetraprolin (TTP), the role of this destabilizing protein in IL-22 production was investigated. Herein, we demonstrate that TTP-deficient mice display augmented serum IL-22. Likewise, IL-22 mRNA was enhanced in TTP-deficient splenocytes and isolated primary T cells. A pivotal role for TTP is underscored by an extended IL-22 mRNA half-life detectable in TTP-deficient T cells. Lu…

STAT3 Transcription Factormedicine.medical_treatmentT-LymphocytesTristetraprolinPrimary Cell CultureMAP Kinase Kinase 1BiologyJurkat cellsArticleInterleukin 22Jurkat CellsMiceTristetraprolinNitrilesmedicineButadienesAnimalsHumansRNA Messengerddc:610Regulation of gene expressionAU-rich elementAU Rich ElementsInflammationMultidisciplinaryInterleukinsHEK 293 cellsInterleukinCell biologyCytokineHEK293 CellsGene Expression RegulationImmunologyErratumScientific Reports
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Negative feedback regulation of the yeast CTH1 and CTH2 mRNA binding proteins is required for adaptation to iron deficiency and iron supplementation.

2013

Iron (Fe) is an essential element for all eukaryotic organisms because it functions as a cofactor in a wide range of biochemical processes. Cells have developed sophisticated mechanisms to tightly control Fe utilization in response to alterations in cellular demands and bioavailability. In response to Fe deficiency, the yeast Saccharomyces cerevisiae activates transcription of the CTH1 and CTH2 genes, which encode proteins that bind to AU-rich elements (AREs) within the 3′ untranslated regions (3′UTRs) of many mRNAs, leading to metabolic reprogramming of Fe-dependent pathways and decreased Fe storage. The precise mechanisms underlying Cth1 and Cth2 function and regulation are incompletely u…

Untranslated regionSaccharomyces cerevisiae ProteinsIronRNA StabilitySaccharomyces cerevisiaeMolecular Sequence DataSaccharomyces cerevisiaeBiologyCofactorTristetraprolinIn vivoTranscription (biology)Gene Expression Regulation FungalAutoregulationRNA MessengerMolecular BiologyGene3' Untranslated RegionsAU Rich ElementsBase SequenceCell BiologyArticlesbiology.organism_classificationMolecular biologyAdaptation PhysiologicalYeastCell biologyDNA-Binding Proteinsbiology.proteinTranscription FactorsMolecular and cellular biology
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