| Literature DB >> 23872847 |
Malini Vashishtha1, Christopher W Ng, Ferah Yildirim, Theresa A Gipson, Ian H Kratter, Laszlo Bodai, Wan Song, Alice Lau, Adam Labadorf, Annie Vogel-Ciernia, Juan Troncosco, Christopher A Ross, Gillian P Bates, Dimitri Krainc, Ghazaleh Sadri-Vakili, Steven Finkbeiner, J Lawrence Marsh, David E Housman, Ernest Fraenkel, Leslie M Thompson.
Abstract
Transcriptional dysregulation is an early feature of Huntington disease (HD). We observed gene-specific changes in histone H3 lysine 4 trimethylation (H3K4me3) at transcriptionally repressed promoters in R6/2 mouse and human HD brain. Genome-wide analysis showed a chromatin signature for this mark. Reducing the levels of the H3K4 demethylase SMCX/Jarid1c in primary neurons reversed down-regulation of key neuronal genes caused by mutant Huntingtin expression. Finally, reduction of SMCX/Jarid1c in primary neurons from BACHD mice or the single Jarid1 in a Drosophila HD model was protective. Therefore, targeting this epigenetic signature may be an effective strategy to ameliorate the consequences of HD.Entities:
Keywords: neurodegeneration; polyglutamine
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Year: 2013 PMID: 23872847 PMCID: PMC3740882 DOI: 10.1073/pnas.1311323110
Source DB: PubMed Journal: Proc Natl Acad Sci U S A ISSN: 0027-8424 Impact factor: 11.205