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.
Original language | English |
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Article number | N/A |
Pages (from-to) | E3027-E3036 |
Number of pages | 10 |
Journal | Proceedings of the National Academy of Sciences of the United States of America |
Volume | 110 |
Issue number | 32 |
DOIs | |
Publication status | Published - 6 Aug 2013 |
Keywords
- polyglutamine
- neurodegeneration
- MUTANT HUNTINGTIN
- GENE-EXPRESSION
- NEUROTROPHIC FACTOR
- DNA METHYLATION
- HISTONE H3
- TRANSCRIPTIONAL DYSREGULATION
- NERVOUS-SYSTEM
- ACTIVE GENES
- HUMAN GENOME
- MOUSE MODEL