Title | Widespread Mitotic Bookmarking by Histone Marks and Transcription Factors in Pluripotent Stem Cells. |
Publication Type | Journal Article |
Year of Publication | 2017 |
Authors | Liu Y, Pelham-Webb B, Di Giammartino DCampigli, Li J, Kim D, Kita K, Saiz N, Garg V, Doane A, Giannakakou P, Hadjantonakis A-K, Elemento O, Apostolou E |
Journal | Cell Rep |
Volume | 19 |
Issue | 7 |
Pagination | 1283-1293 |
Date Published | 2017 05 16 |
ISSN | 2211-1247 |
Keywords | Acetylation, Animals, Chromatin, Histone Code, Histones, Humans, Lysine, Mitosis, Pluripotent Stem Cells, Proteolysis, Transcription Factors |
Abstract | During mitosis, transcription is halted and many chromatin features are lost, posing a challenge for the continuity of cell identity, particularly in fast cycling stem cells, which constantly balance self-renewal with differentiation. Here we show that, in pluripotent stem cells, certain histone marks and stem cell regulators remain associated with specific genomic regions of mitotic chromatin, a phenomenon known as mitotic bookmarking. Enhancers of stem cell-related genes are bookmarked by both H3K27ac and the master regulators OCT4, SOX2, and KLF4, while promoters of housekeeping genes retain high levels of mitotic H3K27ac in a cell-type invariant manner. Temporal degradation of OCT4 during mitotic exit compromises its ability both to maintain and induce pluripotency, suggesting that its regulatory function partly depends on its bookmarking activity. Together, our data document a widespread yet specific bookmarking by histone modifications and transcription factors promoting faithful and efficient propagation of stemness after cell division. |
DOI | 10.1016/j.celrep.2017.04.067 |
Alternate Journal | Cell Rep |
PubMed ID | 28514649 |
PubMed Central ID | PMC5495017 |
Grant List | DP2 DA043813 / DA / NIDA NIH HHS / United States P30 CA008748 / CA / NCI NIH HHS / United States T32 CA062948 / CA / NCI NIH HHS / United States T32 GM007739 / GM / NIGMS NIH HHS / United States |