Journal
NATURE GENETICS
Volume 42, Issue 7, Pages 631-U111Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ng.600
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- Agency for Science, Technology and Research (A*STAR) of Singapore
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Detection of new genomic control elements is critical in understanding transcriptional regulatory networks in their entirety. We studied the genome-wide binding locations of three key regulatory proteins (POU5F1, also known as OCT4; NANOG; and CTCF) in human and mouse embryonic stem cells. In contrast to CTCF, we found that the binding profiles of OCT4 and NANOG are markedly different, with only similar to 5% of the regions being homologously occupied. We show that transposable elements contributed up to 25% of the bound sites in humans and mice and have wired new genes into the core regulatory network of embryonic stem cells. These data indicate that species-specific transposable elements have substantially altered the transcriptional circuitry of pluripotent stem cells.
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