The scales, mechanisms, and dynamics of the genome architecture

L Lizana, YB Schwartz - Science Advances, 2024 - science.org
Even when split into several chromosomes, DNA molecules that make up our genome are
too long to fit into the cell nuclei unless massively folded. Such folding must accommodate …

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 …

[HTML][HTML] Chromatin gene-gene loops support the cross-regulation of genes with related function

T Pollex, R Marco-Ferreres, L Ciglar, Y Ghavi-Helm… - Molecular Cell, 2024 - cell.com
Chromatin loops between gene pairs have been observed in diverse contexts in both flies
and vertebrates. Combining high-resolution Capture-C, DNA fluorescence in situ …

Chromosome structure in Drosophila is determined by boundary pairing not loop extrusion

X Bing, W Ke, M Fujioka, A Kurbidaeva, S Levitt… - Elife, 2024 - elifesciences.org
Two different models have been proposed to explain how the endpoints of chromatin looped
domains ('TADs') in eukaryotic chromosomes are determined. In the first, a cohesin complex …

Stem-loop and circle-loop TADs generated by directional pairing of boundary elements have distinct physical and regulatory properties

W Ke, M Fujioka, P Schedl, JB Jaynes - Elife, 2024 - elifesciences.org
The chromosomes in multicellular eukaryotes are organized into a series of topologically
independent loops called TADs. In flies, TADs are formed by physical interactions between …

Genome organization regulates nuclear pore complex formation and promotes differentiation during Drosophila oogenesis

NM Kotb, G Ulukaya, A Chavan… - Genes & …, 2024 - genesdev.cshlp.org
Genome organization can regulate gene expression and promote cell fate transitions. The
differentiation of germline stem cells (GSCs) to oocytes in Drosophila involves changes in …

Regulatory landscape of enhancer-mediated transcriptional activation

K Kawasaki, T Fukaya - Trends in Cell Biology, 2024 - cell.com
Enhancers are noncoding regulatory elements that instruct spatial and temporal specificity of
gene transcription in response to a variety of intrinsic and extrinsic signals during …

Epigenetics and the timing of neuronal differentiation

AI Aldridge, AE West - Current Opinion in Neurobiology, 2024 - Elsevier
Highlights•Chromatin regulators orchestrate the pace and order of gene expression
programs in differentiating neurons.•Disease-associated mutations in chromatin regulators …

Nuclear morphology is shaped by loop-extrusion programs

I Patta, M Zand, L Lee, S Mishra, A Bortnick, H Lu… - Nature, 2024 - nature.com
It is well established that neutrophils adopt malleable polymorphonuclear shapes to migrate
through narrow interstitial tissue spaces,–. However, how polymorphonuclear structures are …

Members of an array of zinc-finger proteins specify distinct Hox chromatin boundaries

H Ortabozkoyun, PY Huang, E Gonzalez-Buendia… - Molecular Cell, 2024 - cell.com
Partitioning of repressive from actively transcribed chromatin in mammalian cells fosters cell-
type-specific gene expression patterns. While this partitioning is reconstructed during …