Publications de Julien Dorier | EPFL Graph Search

Application of a high-density microelectrode array assay using a 3D human iPSC-derived brain microphysiological system model for in vitro neurotoxicity screening of environmental compounds

Unraveling the associations between human exposure to environmental chemicals and potential neurotoxicity presents significant challenges. Evaluation of neurotoxicity potential using animal testing is resource-intensive (financial, labor, and animal use) a ...

Springer Science and Business Media LLC2025

A boundary-defining protein facilitates megabase-scale regulatory chromosomal loop formation in Drosophila neurons

Julien Dorier

Regulatory elements, such as enhancers and silencers, control transcription by establishing physical proximity to target gene promoters. Neurons in flies and mammals exhibit long-range three-dimensional genome contacts, proposed to connect genes with dista ...

Cold Spring Harbor Laboratory2025

Comparative assessment of cytometry by time-of-flight and full spectral flow cytometry based on a 33-color antibody panel

Nicolas Jean Philippe Guex, Julien Dorier, Miguel Garcia

Mass cytometry and full spectrum flow cytometry have recently emerged as new promising single cell proteomic analysis tools that can be exploited to decipher the extensive diversity of immune cell repertoires and their implication in human diseases. In thi ...

Elsevier2024

Chromosome-level organization of the regulatory genome in the Drosophila nervous system

Nicolas Jean Philippe Guex, Marion Leleu, Julien Dorier, Christian Iseli, Brian Donal McCabe, Rebecca Carolyn Smith

Previous studies have identified topologically associating domains (TADs) as basic units of genome organization. We present evidence of a previously unreported level of genome folding, where distant TAD pairs, megabases apart, interact to form meta-domains ...

2023

Essential role of Cp190 in physical and regulatory boundary formation

Nicolas Jean Philippe Guex, Julien Dorier, Christian Iseli

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

CTCF loss has limited effects on global genome architecture in Drosophila despite critical regulatory functions

Christian Iseli, Nicolas Jean Philippe Guex, Julien Dorier, Flavia Marzetta

Vertebrate genomes are partitioned into contact domains defined by enhanced internal contact frequency and formed by two principal mechanisms: compartmentalization of transcriptionally active and inactive domains, and stalling of chromosomal loop-extruding ...

Nature Research2021

A single-cell morpho-transcriptomic map of brassinosteroid action in the Arabidopsis root

Nicolas Jean Philippe Guex, Julien Dorier

2021

Cell-autonomous inflammation of BRCA1-deficient ovarian cancers drives both tumor-intrinsic immunoreactivity and immune resistance via STING

Julien Dorier, George Coukos, Christian Iseli, Mauro Delorenzi, Alizée Jéléna Grimm, Giovanni Ciriello, Alexandre Harari, Marco Mina

In this study, we investigate mechanisms leading to inflammation and immunoreactivity in ovarian tumors with homologous recombination deficiency (HRD). BRCA1 loss is found to lead to transcriptional reprogramming in tumor cells and cell-intrinsic inflammat ...

2021

Transcription-induced supercoiling explains formation of self-interacting chromatin domains in S-pombe

Yannis Burnier, Julien Dorier, Fabrizio Benedetti, Andrzej Stasiak

The question of how self-interacting chromatin domains in interphase chromosomes are structured and generated dominates current discussions on eukaryotic chromosomes. Numerical simulations using standard polymer models have been helpful in testing the vali ...

Oxford University Press (OUP)2017

Effects of physiological self-crowding of DNA on shape and biological properties of DNA molecules with various levels of supercoiling

Giovanni Dietler, Julien Dorier, Fabrizio Benedetti, Yannis Burnier, Aleksandre Japaridze, Andrzej Stasiak, Robert Sebastian Kwapich

DNA in bacterial chromosomes and bacterial plasmids is supercoiled. DNA supercoiling is essential for DNA replication and gene regulation. However, the density of supercoiling in vivo is circa twice smaller than in deproteinized DNA molecules isolated from ...

Oxford University Press2015