Huntingtin with an expanded polyglutamine repeat affects the Jab1-p27(Kip1) pathway
Expansion of polyglutamine repeats is the cause of at least nine inherited human neurodegenerative disorders, including Huntington's disease (HD). It is widely accepted that deregulation of the transcriptional coactivator CBP by expanded huntingtin (htt)
S.Y. Cong +6 more
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Activation of p38MAPK contributes to expanded polyglutamine-induced cytotoxicity.
BackgroundThe signaling pathways that may modulate the pathogenesis of diseases induced by expanded polyglutamine proteins are not well understood.Methodologies/principal findingsHerein we demonstrate that expanded polyglutamine protein cytotoxicity is ...
Maria Tsirigotis +4 more
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Therapeutic gene silencing strategies for polyglutamine disorders
Dominantly inherited polyglutamine disorders are chronic neurodegenerative diseases therapeutically amenable to gene-specific silencing strategies. Several compelling nucleic acid-based approaches have recently been developed to block the expression of mutant proteins and prevent toxic neurodegenerative sequelae.
Scholefield, J, Wood, M
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Peripheral Oxidative Stress Biomarkers in Spinocerebellar Ataxia Type 3/Machado–Joseph Disease
ObjectivesSpinocerebellar ataxia type 3/Machado–Joseph disease (SCA3/MJD) is a polyglutamine disorder with no current disease-modifying treatment. Conformational changes in mutant ataxin-3 trigger different pathogenic cascades, including reactive oxygen ...
Adriano M. de Assis +39 more
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Targeting several CAG expansion diseases by a single antisense oligonucleotide. [PDF]
To date there are 9 known diseases caused by an expanded polyglutamine repeat, with the most prevalent being Huntington's disease. Huntington's disease is a progressive autosomal dominant neurodegenerative disorder for which currently no therapy is ...
Melvin M Evers +7 more
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Antisense oligonucleotide therapeutics in neurodegenerative diseases: the case of polyglutamine disorders [PDF]
AbstractPolyglutamine (polyQ) disorders are a group of nine neurodegenerative diseases that share a common genetic cause, which is an expansion of CAG repeats in the coding region of the causative genes that are otherwise unrelated. The trinucleotide expansion encodes for an expanded polyQ tract in the respective proteins, resulting in toxic gain-of ...
Ana C Silva +8 more
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The Ins and Outs of a Polyglutamine Neurodegenerative Disease: Spinocerebellar Ataxia Type 1 (SCA1)
Polyglutamine neurodegenerative disorders are characterized by the expansion of a glutamine tract within the mutant disease-causing protein.
Harry T. Orr
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Galaz-Montoya et al. report nanometer-resolution 3D cryo-electron tomography structures of mutant huntingtin (mHTT) and polyglutamine-only (polyQ) filaments in large aggregates free of stains, fixatives, tags, or dehydration artifacts.
Jesús G. Galaz-Montoya +4 more
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Kynurenine 3-Monooxygenase Interacts with Huntingtin at the Outer Mitochondrial Membrane
The flavoprotein kynurenine 3-monooxygenase (KMO) is localised to the outer mitochondrial membrane and catalyses the synthesis of 3-hydroxykynurenine from L-kynurenine, a key step in the kynurenine pathway (KP) of tryptophan degradation.
Aisha M. Swaih +11 more
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The Role for Alterations in Neuronal Activity in the Pathogenesis of Polyglutamine Repeat Disorders [PDF]
Polyglutamine diseases are a class of neurodegenerative diseases that share an expansion of a glutamine-encoding CAG tract in the respective disease genes as a central hallmark. In all of these diseases there is progressive degeneration in a select subset of neurons, and the mechanisms behind this degeneration remain unclear.
Ravi, Chopra, Vikram G, Shakkottai
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