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Wang, Z.* ; Fan, R.* ; Russo, A.* ; Cernilogar, F.M.* ; Nuber, A.* ; Schirge, S. ; Shcherbakova, I.* ; Dzhilyanova, I.* ; Ugur, E.* ; Anton, T.* ; Richter, L.* ; Leonhardt, H.* ; Lickert, H. ; Schotta, G.*

Dominant role of DNA methylation over H3K9me3 for IAP silencing in endoderm.

Nat. Commun. 13:5447 (2022)
Verlagsversion Forschungsdaten DOI PMC
Open Access Gold
Creative Commons Lizenzvertrag
Silencing of endogenous retroviruses (ERVs) is largely mediated by repressive chromatin modifications H3K9me3 and DNA methylation. On ERVs, these modifications are mainly deposited by the histone methyltransferase Setdb1 and by the maintenance DNA methyltransferase Dnmt1. Knock-out of either Setdb1 or Dnmt1 leads to ERV de-repression in various cell types. However, it is currently not known if H3K9me3 and DNA methylation depend on each other for ERV silencing. Here we show that conditional knock-out of Setdb1 in mouse embryonic endoderm results in ERV de-repression in visceral endoderm (VE) descendants and does not occur in definitive endoderm (DE). Deletion of Setdb1 in VE progenitors results in loss of H3K9me3 and reduced DNA methylation of Intracisternal A-particle (IAP) elements, consistent with up-regulation of this ERV family. In DE, loss of Setdb1 does not affect H3K9me3 nor DNA methylation, suggesting Setdb1-independent pathways for maintaining these modifications. Importantly, Dnmt1 knock-out results in IAP de-repression in both visceral and definitive endoderm cells, while H3K9me3 is unaltered. Thus, our data suggest a dominant role of DNA methylation over H3K9me3 for IAP silencing in endoderm cells. Our findings suggest that Setdb1-meditated H3K9me3 is not sufficient for IAP silencing, but rather critical for maintaining high DNA methylation.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Sprache englisch
Veröffentlichungsjahr 2022
HGF-Berichtsjahr 2022
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Zeitschrift Nature Communications
Quellenangaben Band: 13, Heft: 1, Seiten: , Artikelnummer: 5447 Supplement: ,
Verlag Nature Publishing Group
Verlagsort London
Begutachtungsstatus Peer reviewed
POF Topic(s) 90000 - German Center for Diabetes Research
30201 - Metabolic Health
30204 - Cell Programming and Repair
Forschungsfeld(er) Helmholtz Diabetes Center
Stem Cell and Neuroscience
PSP-Element(e) G-501900-231
G-502300-001
G-500800-001
Förderungen Projekt DEAL
Scopus ID 85138171074
PubMed ID 36123357
Erfassungsdatum 2022-09-30