The DOI matches its Crossref record; 76 of the 76 references it cites were found in a registry or an index.
Rescue of Fragile X Syndrome Neurons by DNA Methylation Editing of the FMR1 Gene
Open accessAbstract
Fragile X syndrome (FXS), the most common genetic form of intellectual disability in males, is caused by silencing of the FMR1 gene associated with hypermethylation of the CGG expansion mutation in the 5' UTR of FMR1 in FXS patients. Here, we applied recently developed DNA methylation editing tools to reverse this hypermethylation event. Targeted demethylation of the CGG expansion by dCas9-Tet1/single guide RNA (sgRNA) switched the heterochromatin status of the upstream FMR1 promoter to an active chromatin state, restoring a persistent expression of FMR1 in FXS iPSCs. Neurons derived from methylation-edited FXS iPSCs rescued the electrophysiological abnormalities and restored a wild-type phenotype upon the mutant neurons. FMR1 expression in edited neurons was maintained in vivo after engrafting into the mouse brain. Finally, demethylation of the CGG repeats in post-mitotic FXS neurons also reactivated FMR1. Our data establish that demethylation of the CGG expansion is sufficient for FMR1 reactivation, suggesting potential therapeutic strategies for FXS.
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Metadata
- Authors
- Liu, X. S., Wu, H., Krzisch, M., Wu, X., Graef, J., Muffat, J., Hnisz, D., Li, C. H., Yuan, B., Xu, C., Li, Y., Vershkov, D., Cacace, A., Young, R. A., & Jaenisch, R.
- Venue
- Cell
- Publisher
- Elsevier BV
- Published
- 2018-02
- Volume
- 172
- Issue
- 5
- Pages
- 979-992.e6
- ISSN
- 0092-8674 (ISSN-L)
- OpenAlex
- W2785429866
- Cited by
- 512
- References
- 76
- FWCI
- 33.04
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Liu, X. S., Wu, H., Krzisch, M., Wu, X., Graef, J., Muffat, J., Hnisz, D., Li, C. H., Yuan, B., Xu, C., Li, Y., Vershkov, D., Cacace, A., Young, R. A., & Jaenisch, R. (2018). Rescue of Fragile X Syndrome Neurons by DNA Methylation Editing of the FMR1 Gene. Cell. https://doi.org/10.1016/j.cell.2018.01.012
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