6533b854fe1ef96bd12adf07
RESEARCH PRODUCT
Translation of HTT mRNA with expanded CAG repeats is regulated by the MID1-PP2A protein complex.
Stephanie DornRainer SchneiderEwa JastrzebskaNadine GriescheClemens AchmüllerChangwei ChenMaciej LalowskiMaciej LalowskiSybille KraußDésirée RutschowSusann SchweigerSusann SchweigerSusann SchweigerErich E. WankerSylvia Boeschsubject
metabolism [Microtubule Proteins]General Physics and AstronomyHTT protein humanRibosomal s6 kinaseMice0302 clinical medicinemetabolism [Transcription Factors]Protein Phosphatase 2Luciferasesgenetics [Nerve Tissue Proteins]genetics [Protein Biosynthesis]0303 health sciencesHuntingtin ProteinMultidisciplinarybiologyTOR Serine-Threonine KinasesNuclear ProteinsTranslation (biology)3. Good healthmetabolism [Luciferases]Microtubule Proteinsddc:500metabolism [Nuclear Proteins]genetics [Trinucleotide Repeat Expansion]Protein Bindingcongenital hereditary and neonatal diseases and abnormalitiesMTOR protein humanUbiquitin-Protein LigasesBlotting WesternNerve Tissue Proteinsmetabolism [TOR Serine-Threonine Kinases]metabolism [RNA Messenger]General Biochemistry Genetics and Molecular Biology03 medical and health sciencesgenetics [RNA Messenger]mental disordersHuntingtin ProteinAnimalsHumansEukaryotic Small Ribosomal SubunitRNA MessengerNucleotide Motifs030304 developmental biologyMessenger RNAmetabolism [Nerve Tissue Proteins]RNAmetabolism [Protein Phosphatase 2]General ChemistryProtein phosphatase 2Molecular biologynervous system diseasesProtein Biosynthesisbiology.proteinTrinucleotide repeat expansionTrinucleotide Repeat Expansion030217 neurology & neurosurgeryMid1 protein humanHeLa CellsTranscription Factorsdescription
Expansion of CAG repeats is a common feature of various neurodegenerative disorders, including Huntington's disease. Here we show that expanded CAG repeats bind to a translation regulatory protein complex containing MID1, protein phosphatase 2A and 40S ribosomal S6 kinase. Binding of the MID1-protein phosphatase 2A protein complex increases with CAG repeat size and stimulates translation of the CAG repeat expansion containing messenger RNA in a MID1-, protein phosphatase 2A- and mammalian target of rapamycin-dependent manner. Our data indicate that pathological CAG repeat expansions upregulate protein translation leading to an overproduction of aberrant protein and suggest that the MID1-complex may serve as a therapeutic target for the treatment of CAG repeat expansion disorders.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-10-03 | Nature communications |