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Establishment and maintenance of gene expression by heterochromatin factors

Total Cost €


EC-Contrib. €






 METACHROM project word cloud

Explore the words cloud of the METACHROM project. It provides you a very rough idea of what is the project "METACHROM" about.

regulated    correlates    installed    effect    mammals    modifications    position    contexts    underlying    alleles    reconstituted    lysine    h3k9me3    histone    adapt    either    understand    mescs    individuals    dependent    epialleles    obtain    stem    maintenance    instruct    active    found    stimuli    cells    positions    variably    critical    expressed    subsequently    maintained    first    imparts    embryonic    telomeric    transcription    mouse    regulation    picture    proteomics    silencing    epigenome    deepen    surprisingly    endogenous    chromatin    nearby    epiallele    influenced    variegation    transferase    genetically    environmental    stress    life    genome    identical    establishment    repression    h3    tri    genes    hypothesize    methylating    heterochromatin    adult    gene    model    methyl    setdb1    aging    silenced    epigenetic    induces    metastable    diseases    tethering    mechanisms    environment    map    insertion    telomeres    retrovirus    transcriptional    shape    locus    expression    enhanced   

Project "METACHROM" data sheet

The following table provides information about the project.


Organization address
address: RUE DE TOLBIAC 101
city: PARIS
postcode: 75654

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 1˙999˙025 €
 EC max contribution 1˙999˙025 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2016-COG
 Funding Scheme ERC-COG
 Starting year 2017
 Duration (year-month-day) from 2017-06-01   to  2022-05-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Metastable epialleles are alleles that are variably expressed in genetically identical individuals. These epialleles are established during early development by epigenetic modifications in a process influenced by stress and the environment. The epiallele’s state can subsequently be maintained throughout development and adult life. Studying the mechanisms underlying establishment and maintenance of chromatin states is critical to understanding how the environment can shape the epigenome and how it can impact on diseases and aging. Most mouse metastable epialleles result from a nearby insertion of an endogenous retrovirus, which induces position effect variegation. In mouse embryonic stem cells, these elements are silenced by the histone methyl-transferase SETDB1 which imparts heterochromatin features by tri-methylating histone H3 on lysine 9. In the same cells, telomeric H3K9me3 is also installed by SETDB1 but surprisingly, we found that H3K9me3 correlates with enhanced transcriptional activity at telomeres. I hypothesize here that metastable chromatin states are controlled by H3K9me3 and associated factors, which are targeted to defined positions that can either instruct silencing, or support active expression. To understand how metastable chromatin states are regulated, we will first use a locus-specific chromatin proteomics approach to identify H3K9me3-dependent factors in the contexts of transcription or repression. Next, both pathways will be reconstituted by tethering those factors at specific positions on model genes, and maintenance of these states will be analyzed. Finally, to obtain a comprehensive picture of the metastable states establishment and maintenance, we will map heterochromatin factors genome-wide, in response to distinct stimuli in mESCs. This proposal will deepen our understanding of the mechanisms by which mammals use gene regulation to adapt to environmental conditions.


year authors and title journal last update
List of publications.
2019 Mathilde Gauchier, Sophie Kan, Amandine Barral, Sandrine Sauzet, Eneritz Agirre, Erin Bonnell, Nehmé Saksouk, Teresa K. Barth, Satoru Ide, Serge Urbach, Raymund J. Wellinger, Reini F. Luco, Axel Imhof, Jérôme Déjardin
SETDB1-dependent heterochromatin stimulates alternative lengthening of telomeres
published pages: eaav3673, ISSN: 2375-2548, DOI: 10.1126/sciadv.aav3673
Science Advances 5/5 2020-02-06
2019 Sofie Traynor, Niels Erik Møllegaard, Mikkel G Jørgensen, Nadine H Brückmann, Christina B Pedersen, Mikkel G Terp, Simone Johansen, Jerome Dejardin, Henrik J Ditzel, Morten F Gjerstorff
Remodeling and destabilization of chromosome 1 pericentromeric heterochromatin by SSX proteins
published pages: 6668-6684, ISSN: 0305-1048, DOI: 10.1093/nar/gkz396
Nucleic Acids Research 47/13 2020-02-06
2019 Camille Dion, Stéphane Roche, Camille Laberthonnière, Natacha Broucqsault, Virginie Mariot, Shifeng Xue, Alexandra D Gurzau, Agnieszka Nowak, Christopher T Gordon, Marie-Cécile Gaillard, Claire El-Yazidi, Morgane Thomas, Andrée Schlupp-Robaglia, Chantal Missirian, Valérie Malan, Liham Ratbi, Abdelaziz Sefiani, Bernd Wollnik, Bernard Binetruy, Emmanuelle Salort Campana, Shahram Attarian, Rafa
SMCHD1 is involved in de novo methylation of the DUX4 -encoding D4Z4 macrosatellite
published pages: 2822-2839, ISSN: 0305-1048, DOI: 10.1093/nar/gkz005
Nucleic Acids Research 47/6 2020-02-06
2018 Mathieu Tardat, Jérôme Déjardin
Telomere chromatin establishment and its maintenance during mammalian development
published pages: 3-18, ISSN: 0009-5915, DOI: 10.1007/s00412-017-0656-3
Chromosoma 127/1 2019-06-11

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