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lüll The ubiquitin-proteasome pathway in Huntington s disease Finkbeiner S; Mitra SScientificWorldJournal 2008[Apr]; 8 (ä): 421-33The accumulation of mutant protein is a common feature of neurodegenerative disease. In Huntington's disease, a polyglutamine expansion in the huntingtin protein triggers neuronal toxicity. Accompanying neuronal death, mutant huntingtin aggregates in large macromolecular structures called inclusion bodies. The function of the machinery for intracellular protein degradation is linked to huntingtin toxicity and components of this machinery colocalize with inclusion bodies. An increasing body of evidence implicates the ubiquitin-proteasome pathway in the failure of cells to degrade mutant huntingtin. A number of potential mechanisms that link compromised ubiquitin-proteasome pathway function and neurodegeneration have been proposed and may offer opportunities for therapeutic intervention.|*Models, Neurological[MESH]|*Signal Transduction[MESH]|Animals[MESH]|Brain/*metabolism[MESH]|Humans[MESH]|Huntington Disease/*metabolism[MESH]|Neurons/*metabolism[MESH]|Proteasome Endopeptidase Complex/*metabolism[MESH]|Ubiquitin/*metabolism[MESH] |