Emerging roles for polycomb-group proteins in stem cells and cancer

HL Chan, L Morey - Trends in biochemical sciences, 2019 - cell.com
Polycomb-group (PcG) complexes are multiprotein, evolutionarily conserved epigenetic
machineries that regulate stem cell fate decisions and development, and are also implicated …

Polycomb proteins as organizers of 3D genome architecture in embryonic stem cells

T Pachano, G Crispatzu… - Briefings in Functional …, 2019 - academic.oup.com
Polycomb group proteins (PcGs) control the epigenetic and transcriptional state of
developmental genes and regulatory elements during mammalian embryogenesis …

PRC1 collaborates with SMCHD1 to fold the X-chromosome and spread Xist RNA between chromosome compartments

CY Wang, D Colognori, H Sunwoo, D Wang… - Nature …, 2019 - nature.com
X-chromosome inactivation triggers fusion of A/B compartments to inactive X (Xi)-specific
structures known as S1 and S2 compartments. SMCHD1 then merges S1/S2s to form the Xi …

Tunable, division-independent control of gene activation timing by a polycomb switch

NA Pease, PHB Nguyen, MA Woodworth, KKH Ng… - Cell reports, 2021 - cell.com
During development, progenitors often differentiate many cell generations after receiving
signals. These delays must be robust yet tunable for precise population size control …

Chromatin state switching in a polymer model with mark-conformation coupling

K Adachi, K Kawaguchi - Physical Review E, 2019 - APS
We investigate the phase transition properties of the polymer-Potts model, a chain
composed of monomers with magnetic degrees of freedom, with the motivation to study the …

Cohesin disrupts polycomb-dependent chromosome interactions

JDP Rhodes, A Feldmann, B Hernández-Rodríguez… - BioRxiv, 2019 - biorxiv.org
How chromosome organisation is related to genome function remains poorly understood.
Cohesin, loop-extrusion, and CTCF have been proposed to create structures called …

Orphan CpG islands boost the regulatory activity of poised enhancers and dictate the responsiveness of their target genes

T Pachano, V Sánchez-Gaya, M Mariner-Faulí, T Ealo… - biorxiv, 2020 - biorxiv.org
ARTICLE CpG islands (CGIs) represent a distinctive and widespread genetic feature of
vertebrate genomes, being associated with∼ 70% of all annotated gene promoters. CGIs …

Temporal scaling in developmental gene networks by epigenetic timing control

PHB Nguyen, NA Pease, KKH Ng, B Irwin, HY Kueh - bioRxiv, 2019 - biorxiv.org
During development, progenitors follow defined temporal schedules for differentiation, to
form organs and body plans with precise sizes and proportions. Across diverse contexts …