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Ott, R. ; Singh, T. ; Schütte-Borkovec,K. ; Scholz, M. ; Casteels, K.* ; Gemulla, G.* ; Kordonouri, O.* ; Elding Larsson, H.* ; Szypowska, A.* ; Todd, J.A.* ; Ziegler, A.-G. ; Bonifacio, E.

Epigenetic differences at immune and type 1 diabetes susceptibility genes in blood from young children after COVID-19 infection.

J. Autoimmun. 156:103468 (2025)
Verlagsversion Forschungsdaten DOI PMC
Open Access Hybrid
Creative Commons Lizenzvertrag
BACKGROUND: Viral infections, including COVID-19, are associated with an increased risk for type 1 diabetes (T1D), but potential underlying mechanisms remain unexplored. We evaluated whether COVID-19 or influenza A infection is characterized by differential DNA methylation at immune and T1D susceptibility genes in young children at risk for T1D. METHODS: Epigenome-wide association analysis using the Illumina MethylationEPIC microarray was performed in blood taken at age 1.5 years (IQR, 1.49-1.52 y) from 740 prospectively followed children with increased risk of T1D. SARS-CoV-2 and influenza A H1N1 antibodies were monitored at 2-4-month intervals from age 6 months to identify infection. RESULTS: COVID-19 and influenza infection occurred prior to the DNA methylation sample in 81 and 74 children, respectively. Of these, infection occurred within 3 months of the DNA methylation sample (recent infection) in 43 and 22 children. Compared to children without COVID-19 or influenza A infection, children with recent COVID-19 infection showed differential methylation at key immune- and antiviral genes, including ADAR, IFI44L, MX1 and OASL. In addition to ADAR, six further T1D susceptibility genes, including the SARS-CoV-2 cell entry receptor neuropilin-1, had differential methylation at nearby CpGs in children infected by SARS-CoV-2. A quantitatively less differential methylation was also observed in children with an earlier COVID-19 infection at some of these CpG sites. Infections with influenza showed no associations. CONCLUSION: Children with SARS-CoV-2 infection showed sustained DNA methylation changes at genes critical for antiviral response and T1D susceptibility, potentially contributing to immune dysregulation and promotion of the autoimmune process underlying T1D.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Autoimmunity ; Covid-19 ; Dna Methylation ; Influenza ; Sars-cov-2 ; Type 1 Diabetes ; Viral Infection; Sars-cov-2 Infection; Cells; Risk
Sprache englisch
Veröffentlichungsjahr 2025
HGF-Berichtsjahr 2025
ISSN (print) / ISBN 0896-8411
e-ISSN 0896-8411
Quellenangaben Band: 156, Heft: , Seiten: , Artikelnummer: 103468 Supplement: ,
Verlag Elsevier
Verlagsort 24-28 Oval Rd, London Nw1 7dx, England
Begutachtungsstatus Peer reviewed
Institut(e) Institute of Pancreatic Islet Research (IPI)
Institute of Diabetes Research (IDF)
POF Topic(s) 90000 - German Center for Diabetes Research
30201 - Metabolic Health
Forschungsfeld(er) Helmholtz Diabetes Center
PSP-Element(e) G-502600-006
G-502100-001
G-501900-021
Förderungen The Leona M. and Harry B. Helmsley Charitable Trust (Helmsley) grants
EASD-Novo Nordisk Foundation Diabetes Prize for Excellence
Scopus ID 105011987965
PubMed ID 40749537
Erfassungsdatum 2025-11-05