Concentration and activity of the soluble form of the interleukin-7 receptor α in type I diabetes identifies an interplay between hyperglycemia and immune function.
Diabetes 62, 2500-2508 (2013)
Soluble IL-7 receptor alpha (sCD127) is implicated in the pathogenesis of autoimmune diseases. We show that serum sCD127 concentrations are increased at the onset of type 1 diabetes (n=390) as compared to concentrations in age-matched islet autoantibody negative first degree relatives of patients (n=392; P=0.00001). sCD127 Concentration in patients was influenced by islet autoantibody status (P=0.003) and genotype of the rs6897932 single nucleotide polymorphism within theIL-7RA gene (P=0.006). Release of sCD127 in vitro was strongly up-regulated by activation of T lymphocytes, and affected by exposure to cytokines. sCD127 bound IL-7 and was antagonistic to IL-7 signaling and IL-7 mediated T cell proliferation suggesting a regulatory feedback mechanism on T cell expansion. Remarkably, high glucose led to a glycated form of sCD127 that was ineffective as an IL-7 antagonist. The finding of glycated sCD127 in the circulation of patients at onset of type 1 diabetes suggested that physiological regulation of IL-7 mediated T cell survival and expansion by sCD127 may be compromised in type 1 diabetes. The findings indicate that genetic, immunologic and metabolic factors contribute to a dysregulation of the IL-7/IL-7 receptor pathway in type 1 diabetes, and identify a novel hyperglycemia mediated interference of immune regulatory networks.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Cd4 T-cells ; Multiple-sclerosis ; In-vivo ; Expression ; Il-7 ; Autoimmunity ; Associations ; Haplotypes ; Humans ; Design
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2013
Prepublished im Jahr
HGF-Berichtsjahr
2013
ISSN (print) / ISBN
0012-1797
e-ISSN
1939-327X
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 62,
Heft: 7,
Seiten: 2500-2508
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
American Diabetes Association
Verlagsort
Alexandria, VA.
Tag d. mündl. Prüfung
0000-00-00
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Gutachter
Prüfer
Topic
Hochschule
Hochschulort
Fakultät
Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30201 - Metabolic Health
Forschungsfeld(er)
Helmholtz Diabetes Center
PSP-Element(e)
G-502100-001
Förderungen
Copyright
Erfassungsdatum
2013-05-16