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| EWAS ID | EWAS213 |
| GSE ID | GSE51921 |
| EWAS Title | DNA methylation analysis in idiopathic and LRRK2-associated Parkinson's disease (PD) |
| Disease/Phenotype | Parkinson's disease (PD) |
| Group1 | Normal |
| Group2 | Parkinson's disease (PD) |
| Group1 Sample Size | 4 |
| Group2 Sample Size | 10 |
| Summary | We performed a genome-wide DNA methylation study in induced pluripotent stem cells (IPSC)-derived dopaminergic neurons (DAn) generated from keratinocytes of monogenic and sporadic Parkinson disease (PD) patients as well as of healthy subjects. We observed extensive DNA methylation changes in DAn from PD patients. These changes were neither present in the original keratinocytes nor in the undifferentiated IPSCs, suggesting latent molecular defects in PD keratinocytes that are manifested only upon differentiation into DAn. We also found that enhancers showing abnormal DNA hypermethylation in PD were enriched for binding sites of transcription factors such as FOXA1, NR3C1, HNF4A and FOSL2 which are involved in the survival of DAn and showed reduced expression. These data suggest that aberrant epigenomic remodeling of IPSC-derived DAn in PD is mediated by the down-regulation of key transcription factors. Our study suggests that future cell replacement strategies should pay careful attention to the correct epigenomic status of the reprogrammed cells, especially when using patient own skin cells. |
| Contributor | Ezquerra M, Fernandez-Santiago R, Tolosa E, Sànchez-Pla À, Mosquera JL |
| Public date | Public on Dec 01, 2015 |
| Citation (PubMed ID) | 26516212 |
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