Publications associées à Oxidative stress at telomeres triggers internal DNA loops, TRF1 dissociation, and TRF2-dependent R-loops

Publications associées (18)

Deciphering the Foundations of Mitochondrial Mutational Spectra: Replication-Driven and Damage-Induced Signatures Across Chordate Classes

Mitochondrial DNA (mtDNA) mutagenesis remains poorly understood despite its crucial role in disease, aging, and evolutionary tracing. In this study, we reconstructed a comprehensive 192-component mtDNA mutational spectrum for chordates by analyzing 118,397 ...

OXFORD UNIV PRESS2025

CircCDYL Association With hnRNPL Modulates CDYL Isoform Switching in Breast Cancer Cells

Isabella Tarulli

Circular RNAs (circRNAs) are covalently closed back‐splicing products involved in the regulation of different cellular processes, and their dysregulation has been frequently observed in cancer cells. CircCDYL, a circRNA derived from the back‐splicing of CD ...

Wiley2025

Photo-Cross-linked DNA Structures Greatly Improves Their Serum Nuclease Resistances and Gene Knock-In Efficiencies

Youwei Ma

The stabilization and structural integrity of DNA architectures remain significant challenges in their biomedical applications, particularly when inserting functional units into the genome using long single-stranded DNA (lssDNA). To address these challenge ...

WILEY-V C H VERLAG GMBH2024

Mechanism of Chromatin Ubiquitination by PRC1 on the Single-Molecule Level

Alexandra Teslenko

Multicellular eukaryotic organisms contain identical genetic information within each cell, stored within the nucleus as chromatin fibers. The regulation of gene expression allows cell-type-specific temporal and spatial gene activation or repression despite ...

EPFL2024

Resolving bacterial cell biology: from replisome dynamics to cell wall synthesis

Chen Zhang

Bacteria are ubiquitous single cellular organisms. Compared to eukaryotic cells, bacteria have two unique characteristics: the membrane-less nucleoid and the cell wall built of peptidoglycan (PG). In most bacteria, a single circular chromosome is compacted ...

EPFL2024

Mitochondria-specific signature of oxidative damage in human cancers: an excess of A>G on heavy chain of the mitochondrial genome in slow-dividing normoxic tissues

Konstantin Popadin

Springernature2024

Individual transcription factors modulate both the micromovement of chromatin and its long-range structure

David Michael Suter, Natalya Katanayeva, Haitham Ahmed Shaban Ahmed, Armelle Inge Marie Eleonore Tollenaere

The control of eukaryotic gene expression is intimately connected to highly dynamic chromatin structures. Gene regulation relies on activator and repressor transcription factors (TFs) that induce local chromatin opening and closing. However, it is unclear ...

National Academy of Sciences2024

A modular toolbox for the optogenetic deactivation of transcription

Matteo Fiumara, Johannes Gräff, Davide Martino Coda

Light-controlled transcriptional activation is a commonly used optogenetic strategy that allows researchers to regulate gene expression with high spatiotemporal precision. The vast majority of existing tools are, however, limited to light-triggered inducti ...

OXFORD UNIV PRESS2025

Single-cell epigenomic reconstruction of developmental trajectories from pluripotency in human neural organoid systems

Fides Zenk

Cell fate progression of pluripotent progenitors is strictly regulated, resulting in high human cell diversity. Epigenetic modifications also orchestrate cell fate restriction. Unveiling the epigenetic mechanisms underlying human cell diversity has been di ...

Nature Portfolio2024

Whole genome doubling promotes tumorigenesis through loss of chromatin segregation and compartment repositioning

Ruxandra-Andreea Lambuta

Whole genome doubling (WGD) events are drivers of genetic innovation across vertebrate evolution. While generally detrimental to mammalian organisms, WGDs are crucial in the development of various plants and fungi, as well as for the terminal differentiati ...

EPFL2023

DNA as a Recyclable Natural Polymer

Francesco Stellacci, Daniel Ortiz Trujillo, Simone Giaveri, Weina Liu

Nature has the ability of circularly re-using its components to produce the molecules and materials it needs. An example is the ability of most living organisms of digesting proteins they feed off into amino acids and then using such amino acids in the rib ...

WILEY-V C H VERLAG GMBH2022

Essential role of Cp190 in physical and regulatory boundary formation

Nicolas Jean Philippe Guex, Christian Iseli, Julien Dorier

Boundaries in animal genomes delimit contact domains with enhanced internal contact frequencies and have debated functions in limiting regulatory cross-talk between domains and guiding enhancers to target promoters. Most mammalian boundaries form by stalli ...

2022

Differential contribution of nuclear size scaling mechanisms between Xenopus species

Christoph Merten

Size of the nucleus, a membrane-bound organelle for DNA replication and transcription in eukaryotic cells, varies to adapt nuclear functions to the surrounding environment. Nuclear size strongly correlates with cytoplasmic size and genomic content. Previou ...

2022

The human telomeric proteome during telomere replication

Chih-Yi Gabriela Lin, Joachim Lingner, Aleksandra Vancevska, Thomas Frédéric Lunardi, Gérald Joseph Paul Lossaint

Telomere shortening can cause detrimental diseases and contribute to aging. It occurs due to the end replication problem in cells lacking telomerase. Furthermore, recent studies revealed that telomere shortening can be attributed to difficulties of the sem ...

OXFORD UNIV PRESS2021

Inositol pyrophosphates promote the interaction of SPX domains with the coiled-coil motif of PHR transcription factors to regulate plant phosphate homeostasis

Luciano Andres Abriata

Phosphorus is an essential nutrient taken up by organisms in the form of inorganic phosphate (Pi). Eukaryotes have evolved sophisticated Pi sensing and signaling cascades, enabling them to stably maintain cellular Pi concentrations. Pi homeostasis is regul ...

Nature Research2021

Towards an artificial cell: Development of a system which self-regenerates the protein components of the PURE system in microfluidic reactors

Barbora Lavickova

Thanks to recent advancements in synthetic biology, the dream of creating a synthetic cell has become feasible. However, due to its inherent complexity, one of the fundamental functions of all living systems, i.e., self-replication, remains to be introduce ...

EPFL2021

Pharmacological and genetic perturbation establish SIRT5 as a promising target in breast cancer

Johan Auwerx, Bo Li

SIRT5 is a member of the sirtuin family of NAD(+)-dependent protein lysine deacylases implicated in a variety of physiological processes. SIRT5 removes negatively charged malonyl, succinyl, and glutaryl groups from lysine residues and thereby regulates mul ...

SPRINGERNATURE2021

The integrated stress response contributes to tRNA synthetase-associated peripheral neuropathy

Yu Bai, René Uwe Schneider, Cédric Gobet

Dominant mutations in ubiquitously expressed transfer RNA (tRNA) synthetase genes cause axonal peripheral neuropathy, accounting for at least six forms of Charcot-Marie-Tooth (CMT) disease. Genetic evidence in mouse and Drosophila models suggests a gain-of ...

American Association for the Advancement of Science2021