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Updated: Apr 12, 2026
Correlating Gene-specific DNA Methylation Changes with Expression and Transcriptional Activity of Astrocytic KCNJ10 Kir4.1
Published on: September 26, 2015
DNA methylation temporal profiling following peripheral versus central nervous system axotomy
Ricco Lindner1, Radhika Puttagunta2, Tuan Nguyen2
1Laboratory for NeuroRegeneration and Repair, Center for Neurology, Hertie Institute for Clinical Brain Research, University of Tuebingen , 72076 Tuebingen, Germany ; Center for Biotechnology and Biomedicine (BBZ), Division of Molecular Biological-Biochemical Processing Technology, University of Leipzig , 04103 Germany.
This study maps DNA methylation changes in dorsal root ganglia after nerve injury. The findings provide a resource for understanding gene regulation in axonal regeneration and neuronal repair.
Area of Science:
- Neuroscience
- Epigenetics
- Molecular Biology
Background:
- Axonal regeneration after nerve injury is crucial for neuronal repair but poorly understood.
- Gene expression changes after axotomy are regulated by epigenetic mechanisms, including DNA methylation.
- The specific role of DNA methylation in neuronal response to injury remains unclear.
Purpose of the Study:
- To provide a comprehensive DNA methylation dataset following axotomy of central and peripheral axonal branches.
- To investigate the temporal dynamics of DNA methylation in dorsal root ganglia (DRG) after nerve injury.
- To create a user-friendly resource for analyzing DNA methylation patterns and their relation to gene expression in neuronal regeneration.
Main Methods:
- Temporal DNA methylation profiling using microarrays (Roche/NimbleGen) in mouse lumbar DRG.
- Immunoprecipitation of 5-methylcytosine-DNA to capture methylated regions.
- Analysis of DNA methylation in promoter and CpG island regions of genes.
- Development of a methylation 'hit' scoring map for systematic data analysis.
Main Results:
- Detailed dataset of DNA methylation changes in DRG after spinal and sciatic nerve axotomy.
- Identification of specific DNA methylation patterns associated with regenerating (sciatic) and non-regenerating (spinal) axonal injuries.
- A searchable spreadsheet map facilitating functional gene annotation and classification.
- Data enabling bioinformatic comparison with other epigenetic and gene expression datasets.
Conclusions:
- The generated dataset offers a valuable resource for studying DNA methylation's role in neuronal plasticity and axonal regeneration.
- This data supports further experimental investigation into epigenetic regulation of neuronal repair pathways.
- The findings contribute to a deeper understanding of the molecular mechanisms underlying nerve injury response.
