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D4Z4 Region Methylation (D4Z4 Methylation)
- Target
- D4Z4 Methylation
- Molecular classification
- DNA Methylation, Epigenetic Modification, Genomic repeat region
01
Overview
The D4Z4 region refers to a macrosatellite repeat array located on chromosome 4q35 (and also on 10q), composed of tandemly repeated units of approximately 3.3 kb each. The methylation status of CpG sites within these repeats is crucial for the regulation of gene expression, particularly the *DUX4* gene, which is implicated in facioscapulohumeral muscular dystrophy (FSHD). Restoring normal levels or patterns of DNA methylation at the D4Z4 region—especially at key regulatory sites—represents a therapeutic strategy aimed at re-establishing repression of aberrant *DUX4* expression.
- Other names
- D4Z4 DNA MethylationD4Z4 CpG MethylationChromosome 4q35 D4Z4 methylation
02
Mechanism of action
Restoration of normal methylation patterns at the D4Z4 region to repress aberrant DUX4 expression.
03
Biological functions
Transcriptional repressionHeterochromatin maintenanceGene regulation
04
Disease associations
Facioscapulohumeral Muscular Dystrophy (FSHD)Genetic Disorders
05
Safety considerations
Off-target effects of epigenetic drugsSpecificity of CRISPR/dCas9-based epigenome editing
06
Interacting drugs
Epigenetic drugs targeting DNA methyltransferases
07
Biomarkers
D4Z4 methylation levels at distal-most D4Z4 unit
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