Bivalent chromatin: a developmental balancing act tipped in cancer

E Glancy, N Choy… - Biochemical Society …, 2024 - portlandpress.com
Bivalent chromatin is defined by the co-occurrence of otherwise opposing H3K4me3 and
H3K27me3 modifications and is typically located at unmethylated promoters of lowly …

TDP-43 Epigenetic Facets and Their Neurodegenerative Implications

J Gimenez, A Spalloni, S Cappelli, F Ciaiola… - International journal of …, 2023 - mdpi.com
Since its initial involvement in numerous neurodegenerative pathologies in 2006, either as a
principal actor or as a cofactor, new pathologies implicating transactive response (TAR) …

PRC2. 1-and PRC2. 2-specific accessory proteins drive recruitment of different forms of canonical PRC1

E Glancy, C Wang, E Tuck, E Healy, S Amato… - Molecular cell, 2023 - cell.com
Summary Polycomb repressive complex 2 (PRC2) mediates H3K27me3 deposition, which is
thought to recruit canonical PRC1 (cPRC1) via chromodomain-containing CBX proteins to …

[HTML][HTML] The apparent loss of PRC2 chromatin occupancy as an artifact of RNA depletion

E Healy, Q Zhang, EH Gail, SC Agius, G Sun, M Bullen… - Cell reports, 2024 - cell.com
RNA has been implicated in the recruitment of chromatin modifiers, and previous studies
have provided evidence in favor and against this idea. RNase treatment of chromatin is …

What are tethering elements?

X Li, M Levine - Current Opinion in Genetics & Development, 2024 - Elsevier
High-resolution Micro-C maps identified a specialized class of regulatory DNAs termed
'tethering elements'(TEs) in Drosophila. These 300–500-bp elements facilitate specific long …

Polycomb protein binding and looping in the ON transcriptional state

JL Brown, L Zhang, PP Rocha, JA Kassis, M Sun - Science Advances, 2024 - science.org
Polycomb group (PcG) proteins mediate epigenetic silencing of important developmental
genes by modifying histones and compacting chromatin through two major protein …

DNA elements tether canonical Polycomb Repressive Complex 1 to human genes

JI Barrasa, TG Kahn, MJ Lundkvist… - Nucleic Acids …, 2023 - academic.oup.com
Abstract Development of multicellular animals requires epigenetic repression by Polycomb
group proteins. The latter assemble in multi-subunit complexes, of which two kinds …

Functional analyses of the polycomb‐group genes in sea lamprey embryos undergoing programmed DNA loss

C Saraceno, VA Timoshevskiy… - Journal of Experimental …, 2024 - Wiley Online Library
During early development, sea lamprey embryos undergo programmatic elimination of DNA
from somatic progenitor cells in a process termed programmed genome rearrangement …

[HTML][HTML] Chromatin compaction by Polycomb group proteins revisited

M Uckelmann, C Davidovich - Current Opinion in Structural Biology, 2024 - Elsevier
The chromatin compaction activity of Polycomb group proteins has traditionally been
considered essential for transcriptional repression. However, there is very little information …

Research advances of polycomb group proteins in regulating mammalian development

Y Li, Y Mo, C Chen, J He, Z Guo - Frontiers in Cell and …, 2024 - frontiersin.org
Polycomb group (PcG) proteins are a subset of epigenetic factors that are highly conserved
throughout evolution. In mammals, PcG proteins can be classified into two muti-proteins …