Epigenetic profiles in polyglutamine disorders.
The dominant polyglutamine (polyQ) disorders are a group of progressive and incurable neurodegenerative disorders, which are caused by unstable expanded CAG trinucleotide repeats in the coding regions of their respective causative genes. The most prevalent polyQ disorders worldwide are Huntington's disease and spinocerebellar ataxia type 3. Epigenetic mechanisms, such as DNA methylation, histone modifications and chromatin remodeling and noncoding RNA regulation, regulate gene expression or genome function. Epigenetic dysregulation has been suggested to play a pivotal role in the pathogenesis of polyQ disorders. Here, we summarize the current knowledge of epigenetic changes present in several representative polyQ disorders and discuss the potentiality of miRNAs as therapeutic targets for the clinic therapy of these disorders.
['Liu|Hongmei|H|', 'Tang|Tie-Shan|TS|', 'Guo|Caixia|C|']
D000818:Animals D019175:DNA Methylation D044127:Epigenesis, Genetic D006801:Humans D035683:MicroRNAs D019636:Neurodegenerative Diseases D010455:Peptides
polyglutamine disorders epigenetic dysregulation pathogenesis