Is euchromatin really open in the cell?

K Maeshima, S Iida, MA Shimazoe, S Tamura… - Trends in Cell Biology, 2024 - cell.com
Genomic DNA is wrapped around a core histone octamer and forms a nucleosome. In
higher eukaryotic cells, strings of nucleosomes are irregularly folded as chromatin domains …

Transcription dynamics and genome organization in the mammalian nucleus: Recent advances

K Wagh, DA Stavreva, GL Hager - Molecular Cell, 2024 - cell.com
Single-molecule tracking (SMT) has emerged as the dominant technology to investigate the
dynamics of chromatin-transcription factor (TF) interactions. How long a TF needs to bind to …

Fluorescent protein lifetimes report densities and phases of nuclear condensates during embryonic stem-cell differentiation

K Joron, JO Viegas, L Haas-Neill, S Bier, P Drori… - Nature …, 2023 - nature.com
Fluorescent proteins (FP) are frequently used for studying proteins inside cells. In advanced
fluorescence microscopy, FPs can report on additional intracellular variables. One variable …

Dynamic switching of transcriptional regulators between two distinct low-mobility chromatin states

K Wagh, DA Stavreva, RAM Jensen, V Paakinaho… - Science …, 2023 - science.org
How chromatin dynamics relate to transcriptional activity remains poorly understood. Using
single-molecule tracking, coupled with machine learning, we show that histone H2B and …

Transcription regulates the spatio-temporal dynamics of genes through micro-compartmentalization

H Salari, G Fourel, D Jost - Nature Communications, 2024 - nature.com
Although our understanding of the involvement of heterochromatin architectural factors in
shaping nuclear organization is improving, there is still ongoing debate regarding the role of …

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 …

Motorized chain models of the ideal chromosome

Z Cao, PG Wolynes - Proceedings of the National Academy of Sciences, 2024 - pnas.org
An array of motor proteins consumes chemical energy in setting up the architectures of
chromosomes. Here, we explore how the structure of ideal polymer chains is influenced by …

Deep-learning terahertz single-cell metabolic viability study

N Yang, Q Shi, M Wei, Y Xiao, M Xia, X Cai, X Zhang… - ACS …, 2023 - ACS Publications
Cell viability assessment is critical, yet existing assessments are not accurate enough. We
report a cell viability evaluation method based on the metabolic ability of a single cell …

Single-nucleosome imaging unveils that condensins and nucleosome–nucleosome interactions differentially constrain chromatin to organize mitotic chromosomes

K Hibino, Y Sakai, S Tamura, M Takagi… - Nature …, 2024 - nature.com
For accurate mitotic cell division, replicated chromatin must be assembled into
chromosomes and faithfully segregated into daughter cells. While protein factors like …

Transcriptional condensates: a blessing or a curse for gene regulation?

M Stortz, DM Presman, V Levi - Communications Biology, 2024 - nature.com
Whether phase-separation is involved in the organization of the transcriptional machinery
and if it aids or inhibits the transcriptional process is a matter of intense debate. In this Mini …