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Foxd3 controls heterochromatin-mediated silencing of repeat elements in mouse embryonic stem cells and represses the 2-cell transcription program

Puri, D.; Koschorz, B.; Engist, B.; Onishi-Seebacher, M.; Ryan, D.; Montavon, T.

2021-05-01 developmental biology
10.1101/2021.05.01.442081 bioRxiv
Show abstract

Repeat element transcription plays a vital role in early embryonic development. Expression of repeats such as MERVL characterises mouse embryos at the 2-cell stage, and defines a 2-cell-like cell (2CLC) population in a mouse embryonic stem cell culture. Repeat element sequences contain binding sites for numerous transcription factors. We identify the forkhead domain transcription factor FOXD3 as a regulator of repeat element transcription in mouse embryonic stem cells. FOXD3 binds to and recruits the histone methyltransferase SUV39H1 to MERVL and major satellite repeats, consequentially repressing the transcription of these repeats by the establishment of the H3K9me3 heterochromatin modification. Notably, depletion of FOXD3 leads to the de-repression of MERVL and major satellite repeats as well as a subset of genes expressed in the 2-cell state, shifting the balance between the stem cell and 2-cell like population in culture. Thus, FOXD3 acts as a negative regulator of repeat transcription, ascribing a novel function to this transcription factor.

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"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.