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- W4247082371 abstract "Epigenetic regulations including DNA methylation and demethylation play critical roles in neural development. However, whether DNA methylation and demethylation may play a role in neuronal cell death remains largely unclear. Here we report that the blockade of DNA methyltransferase inhibits apoptosis of cerebellar granule cells and cortical neurons in response to oxidative stress. We found that knockdown of ten-eleven translocation methylcytosine dioxygenase (Tet1), a critical enzyme for DNA demethylation, significantly increase apoptosis of cerebellar granule cells induced by hydrogen peroxide. Moreover, cerebellar granule cells from tet1null mice appeared to be more sensitive to oxidative stress, suggesting the critical role of Tet1 in neuronal cell death. We further showed that the expression of Klotho, an antiaging protein, in cerebellar granule cells is tightly regulated by DNA methylation. Finally, we found that knockdown of Klotho diminished the rescue effects of DNA methyltransferase inhibitors and Tet1 on neuronal cell death induced by oxidative stress. Our work revealed the role of Tet1-mediated DNA demethylation on neuronal protection against oxidative stress and provided the molecular mechanisms underlying the epigenetic regulation of neuronal cell death, suggesting the role of Klotho in regulating neuronal cell death in response to oxidative stress." @default.
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- W4247082371 date "2015-03-12" @default.
- W4247082371 modified "2023-09-28" @default.
- W4247082371 title "Erratum: Tet1-mediated DNA demethylation regulates neuronal cell death induced by oxidative stress" @default.
- W4247082371 doi "https://doi.org/10.1038/srep08951" @default.
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