Chromatin accessibility: methods, mechanisms, and biological insights

AR Mansisidor, VI Risca - Nucleus, 2022 - Taylor & Francis
Access to DNA is a prerequisite to the execution of essential cellular processes that include
transcription, replication, chromosomal segregation, and DNA repair. How the proteins that …

Neurodevelopmental disorders, like cancer, are connected to impaired chromatin remodelers, PI3K/mTOR, and PAK1-regulated MAPK

R Nussinov, BR Yavuz, MK Arici, HC Demirel… - Biophysical …, 2023 - Springer
Neurodevelopmental disorders (NDDs) and cancer share proteins, pathways, and
mutations. Their clinical symptoms are different. However, individuals with NDDs have …

Brillouin light scattering anisotropy microscopy for imaging the viscoelastic anisotropy in living cells

H Keshmiri, D Cikes, M Samalova, L Schindler… - Nature …, 2024 - nature.com
Maintaining and modulating mechanical anisotropy is essential for biological processes.
However, how this is achieved at the microscopic scale in living soft matter is not always …

Orientation-independent-DIC imaging reveals that a transient rise in depletion attraction contributes to mitotic chromosome condensation

S Iida, S Ide, S Tamura, M Sasai, T Tani, T Goto… - Proceedings of the …, 2024 - pnas.org
Genomic information must be faithfully transmitted into two daughter cells during mitosis. To
ensure the transmission process, interphase chromatin is further condensed into mitotic …

Chromosome compaction is triggered by an autonomous DNA-binding module within condensin

A Pastic, ML Nosella, A Kochhar, ZH Liu… - Cell Reports, 2024 - cell.com
The compaction of chromatin into mitotic chromosomes is essential for faithful transmission
of the genome during cell division. In eukaryotes, chromosome morphogenesis is regulated …

From Nucleosomes to Compartments: Physicochemical Interactions Underlying Chromatin Organization

S Liu, A Athreya, Z Lao, B Zhang - Annual Review of Biophysics, 2024 - annualreviews.org
Chromatin organization plays a critical role in cellular function by regulating access to
genetic information. However, understanding chromatin folding is challenging due to its …

Liquid-liquid phase separation (LLPS) in DNA and chromatin systems from the perspective of colloid physical chemistry

L Nordenskiöld, X Shi, N Korolev, L Zhao, Z Zhai… - Advances in Colloid and …, 2024 - Elsevier
DNA is a highly charged polyelectrolyte and is prone to associative phase separation driven
by the presence of multivalent cations, charged surfactants, proteins, polymers and colloids …

Near millimolar concentration of nucleosomes in mitotic chromosomes from late prometaphase into anaphase

F Cisneros-Soberanis, EL Simpson, AJ Beckett… - Journal of Cell …, 2024 - rupress.org
Chromosome compaction is a key feature of mitosis and critical for accurate chromosome
segregation. However, a precise quantitative analysis of chromosome geometry during …

Advanced surface passivation for high-sensitivity studies of biomolecular condensates

RW Yao, MK Rosen - … of the National Academy of Sciences, 2024 - National Acad Sciences
Biomolecular condensates are cellular compartments that concentrate biomolecules without
an encapsulating membrane. In recent years, significant advances have been made in the …

ISWI catalyzes nucleosome sliding in condensed nucleosome arrays

P Vizjak, D Kamp, N Hepp, A Scacchetti… - Nature Structural & …, 2024 - nature.com
How chromatin enzymes work in condensed chromatin and how they maintain diffusional
mobility inside remains unexplored. Here we investigated these challenges using the …