Publications de Stephanie Jocelyne Sungalee

Systematic inference and comparison of multi-scale chromatin sub-compartments connects spatial organization to cell phenotypes

Elisa Oricchio, Stephanie Jocelyne Sungalee, Daniele Tavernari, Giovanni Ciriello, Marco Mina

Chromatin compartmentalization reflects biological activity. However, inference of chromatin sub-compartments and compartment domains from chromosome conformation capture (Hi-C) experiments is limited by data resolution. As a result, these have been charac ...

Nature Research2021

Histone acetylation dynamics modulates chromatin conformation and allele-specific interactions at oncogenic loci

Elisa Oricchio, Natalya Katanayeva, Daniele Tavernari, Stephanie Jocelyne Sungalee, Ruxandra-Andreea Lambuta, Giovanni Ciriello

In cancer cells, enhancer hijacking mediated by chromosomal alterations and/or increased deposition of acetylated histone H3 lysine 27 (H3K27ac) can support oncogene expression. However, how the chromatin conformation of enhancer-promoter interactions is a ...

2021

Cathepsin S Regulates Antigen Processing and T Cell Activity in Non-Hodgkin Lymphoma

Bruno Emanuel Ferreira De Sousa Correia, George Coukos, Elisa Oricchio, Natalya Katanayeva, Julien Racle, Jessica Sordet, Sarah Wehrle, Elena Battistello, Stephanie Jocelyne Sungalee, Elie Charles Eugène Dheilly

Genomic alterations in cancer cells can influence the immune system to favor tumor growth. In non-Hodgkin lymphoma, physiological interactions between B cells and the germinal center microenvironment are coopted to sustain cancer cell proliferation. We fou ...

2020

A scalable CRISPR/Cas9-based fluorescent reporter assay to study DNA double-strand break repair choice

Stephanie Jocelyne Sungalee

Double-strand breaks (DSBs) are the most toxic type of DNA lesions. Cells repair these lesions using either end protection- or end resection-coupled mechanisms. To study DSB repair choice, we present the Color Assay Tracing-Repair (CAT-R) to simultaneously ...

Nature Research2020

EZH2 oncogenic mutations drive epigenetic, transcriptional, and structural changes within chromatin domains

Suliana Manley, Elisa Oricchio, Kyle Michael Douglass, Natalya Katanayeva, Daniele Tavernari, Elena Battistello, Stephanie Jocelyne Sungalee, Maria Christine Donaldson, Timo Henry René Rey, Giovanni Ciriello

Chromatin is organized into topologically associating domains (TADs) enriched in distinct histone marks. In cancer, gain-of-function mutations in the gene encoding the enhancer of zeste homolog 2 protein (EZH2) lead to a genome-wide increase in histone-3 L ...

2019

Genetic and epigenetic inactivation of SESTRIN1 controls mTORC1 and response to EZH2 inhibition in follicular lymphoma

Elisa Oricchio, Natalya Katanayeva, Elena Battistello, Maria Christine Donaldson, Stephanie Jocelyne Sungalee, Giovanni Ciriello

Follicular lymphoma (FL) is an incurable form of B cell lymphoma. Genomic studies have cataloged common genetic lesions in FL such as translocation t(14;18), frequent losses of chromosome 6q, and mutations in epigenetic regulators such as EZH2 Using a focu ...

American Association for the Advancement of Science2017

Conditional Selection of Genomic Alterations Dictates Cancer Evolution and Oncogenic Dependencies

Elisa Oricchio, Mohammad Sadegh Saghafinia, Elena Battistello, Daniele Tavernari, Stephanie Jocelyne Sungalee, Franck Claude Raynaud, Giovanni Ciriello, Marco Mina, Titouan Laessle

Cancer evolves through the emergence and selection of molecular alterations. Cancer genome profiling has revealed that specific events are more or less likely to be co-selected, suggesting that the selection of one event depends on the others. However, the ...

Cell Press2017