RNA is essential for PRC2 chromatin occupancy and function in human pluripotent stem cells.
RNA is essential for PRC2 chromatin occupancy and function in human pluripotent stem cells.
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DOI:
10.1038/s41588-020-0662-x
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发表时间:
2020-09
期刊:
影响因子:
30.8
通讯作者:
Cech, Thomas R.
中科院分区:
文献类型:
--
作者:
Long, Yicheng;Hwang, Taeyoung;Gooding, Anne R.;Goodrich, Karen J.;Rinn, John L.;Cech, Thomas R.
Many chromatin-binding proteins and protein complexes that regulate transcription also bind RNA. One of these, Polycomb repressive complex 2 (PRC2), deposits the H3K27me3 mark of facultative heterochromatin and is required for stem cell differentiation. PRC2 binds RNAs broadly in vivo and in vitro. Yet, the biological importance of this RNA binding remains unsettled. Here, we tackle this question in human induced pluripotent stem cells by using multiple complementary approaches. Perturbation of RNA–PRC2 interaction by RNase A, by a chemical inhibitor of transcription or by an RNA-binding-defective mutant all disrupted PRC2 chromatin occupancy and localization genome wide. The physiological relevance of PRC2–RNA interactions is further underscored by a cardiomyocyte differentiation defect upon genetic disruption. We conclude that PRC2 requires RNA binding for chromatin localization in human pluripotent stem cells and in turn for defining cellular state.
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