While all the developmental genes are temporarily repressed for future activation in the pluripotent stem cells, non-neural genes become persistently repressed in the course of commitment to the neuronal lineage. Although Polycomb group proteins (PcG) are key factors for both temporary and persistent repression of the developmental genes, how the same group of proteins can differentially repress target genes remains unclarified. The identification of a variety of PcG complexes and activities sheds light on these issues. In this review, based on the recent findings including those with the use of interactome and Chromosome Conformation Capture (3C)-type analyses, we summarize the molecular mechanisms of PcG-mediated gene regulation and discuss how PcG regulates cell fate specification during neural development.
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| http://dx.doi.org/10.1016/j.conb.2019.07.003 | DOI Listing |
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