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• W2990341858 abstract "Abstract Orchestrated events, including extensive changes in epigenetic marks, allow a somatic nucleus to become totipotent after transfer into an oocyte, a process termed nuclear reprogramming. Recently, several strategies have been applied in order to improve reprogramming efficiency, mainly focused on removing repressive epigenetic marks such as histone methylation from the somatic nucleus. Herein we used the specific and non-toxic chemical probe UNC0638 to inhibit the catalytic activity of the histone metyltransferases EHMT1 and EHMT2. Either the donor cell (before reconstruction) or the early embryo was exposed to the probe to assess its effect on developmental rates and epigenetic marks. First, we showed that the treatment of bovine fibroblasts with UNC0638 did mitigate the levels of H3K9me2. Moreover, H3K9me2 levels were decreased in cloned embryos regardless of treating either donor cells or early embryos with UNC0638. Additional epigenetic marks such as H3K9me3, 5mC, and 5hmC were also affected by the UNC0638 treatment. Therefore, the use of UNC0638 did diminish the levels of H3K9me2 and H3K9me3 in SCNT-derived blastocysts, but this was unable to improve their preimplantation development. These results indicate that the specific reduction of H3K9me2 by inhibiting EHMT1/2 causes diverse modifications to the chromatin during early development, suggesting an intense epigenetic crosstalk during nuclear reprogramming." @default.
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• W2990341858 date "2019-11-20" @default.
• W2990341858 modified "2023-10-18" @default.
• W2990341858 title "Catalytic inhibition of H3K9me2 writers disturbs epigenetic marks during bovine nuclear reprogramming" @default.
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• W2990341858 doi "https://doi.org/10.1101/847210" @default.
• W2990341858 hasPublicationYear "2019" @default.
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