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Genome-wide association study and functional characterization identifies candidate genes for insulin-stimulated glucose uptake.
Nat. Genet. 55, 973-983 (2023)
Distinct tissue-specific mechanisms mediate insulin action in fasting and postprandial states. Previous genetic studies have largely focused on insulin resistance in the fasting state, where hepatic insulin action dominates. Here we studied genetic variants influencing insulin levels measured 2 h after a glucose challenge in >55,000 participants from three ancestry groups. We identified ten new loci (P < 5 × 10-8) not previously associated with postchallenge insulin resistance, eight of which were shown to share their genetic architecture with type 2 diabetes in colocalization analyses. We investigated candidate genes at a subset of associated loci in cultured cells and identified nine candidate genes newly implicated in the expression or trafficking of GLUT4, the key glucose transporter in postprandial glucose uptake in muscle and fat. By focusing on postprandial insulin resistance, we highlighted the mechanisms of action at type 2 diabetes loci that are not adequately captured by studies of fasting glycemic traits.
Impact Factor
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Glut4 Translocation; Diabetes-mellitus; Tolerance Test; Resistance; Muscle; Sensitivity; Glucose-transporter-4; Phosphorylation; Expression; Complex
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2023
Prepublished im Jahr
0
HGF-Berichtsjahr
2023
ISSN (print) / ISBN
1061-4036
e-ISSN
1546-1718
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 55,
Heft: 6,
Seiten: 973-983
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
Nature Publishing Group
Verlagsort
New York, NY
Tag d. mündl. Prüfung
0000-00-00
Betreuer
Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
Institut(e)
Institute of Pancreatic Islet Research (IPI)
Institute of Epidemiology (EPI)
POF Topic(s)
90000 - German Center for Diabetes Research
30202 - Environmental Health
Forschungsfeld(er)
Helmholtz Diabetes Center
Genetics and Epidemiology
PSP-Element(e)
G-502600-007
G-504091-004
G-502600-004
G-502600-012
G-504000-010
G-504091-002
Förderungen
Copyright
Erfassungsdatum
2023-10-06