Bibliographic Details
| Title: |
Variant PCGF1-PRC1 links PRC2 recruitment with differentiation-associated transcriptional inactivation at target genes. |
| Authors: |
Sugishita, Hiroki, Kondo, Takashi, Ito, Shinsuke, Nakayama, Manabu, Yakushiji-Kaminatsui, Nayuta, Kawakami, Eiryo, Koseki, Yoko, Ohinata, Yasuhide, Sharif, Jafar, Harachi, Mio, Blackledge, Neil P., Klose, Robert J., Koseki, Haruhiko |
| Source: |
Nature Communications; 9/9/2021, Vol. 12 Issue 1, p1-12, 12p |
| Subject Terms: |
GENE silencing, EMBRYONIC stem cells, EPIGENETICS |
| Abstract: |
Polycomb repressive complexes-1 and -2 (PRC1 and 2) silence developmental genes in a spatiotemporal manner during embryogenesis. How Polycomb group (PcG) proteins orchestrate down-regulation of target genes upon differentiation, however, remains elusive. Here, by differentiating embryonic stem cells into embryoid bodies, we reveal a crucial role for the PCGF1-containing variant PRC1 complex (PCGF1-PRC1) to mediate differentiation-associated down-regulation of a group of genes. Upon differentiation cues, transcription is down-regulated at these genes, in association with PCGF1-PRC1-mediated deposition of histone H2AK119 mono-ubiquitination (H2AK119ub1) and PRC2 recruitment. In the absence of PCGF1-PRC1, both H2AK119ub1 deposition and PRC2 recruitment are disrupted, leading to aberrant expression of target genes. PCGF1-PRC1 is, therefore, required for initiation and consolidation of PcG-mediated gene repression during differentiation. Polycomb repressive complexes (PRC1 and PRC2) repress genes that are crucial for development via epigenetic modifications; however, their role in differentiation is not well known. Here the authors reveal that a PCGF1-containing PRC1 variant facilitates exit from pluripotency by downregulating target genes and recruiting PRC2. [ABSTRACT FROM AUTHOR] |
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| Database: |
Complementary Index |
