Unknown,Transcriptomics,Genomics,Proteomics

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Targeting H3K4 methylation as a therapeutic strategy for Huntington's disease (ChIP-seq)

ABSTRACT: Transcriptional dysregulation is an early feature of Huntington's disease (HD). We observed gene-specific changes in H3K4me3 at transcriptionally repressed promoters in R6/2 mouse and human HD brain. Genome-wide analysis showed a novel 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 (Htt) 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. ChIP-seq for H3K4me3 in wild type and R6/2 cortex and striatum at 8 and 12 weeks.

ORGANISM(S): Mus musculus

SUBMITTER: Christopher Ng 

PROVIDER: E-GEOD-48960 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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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  ...[more]

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