The mif gene is transcriptionally regulated by glucose in insulin-secreting cells.

Détails

ID Serval
serval:BIB_5BB1F0DBF74E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
The mif gene is transcriptionally regulated by glucose in insulin-secreting cells.
Périodique
Biochemical and biophysical research communications
Auteur(s)
Plaisance V., Thompson N., Niederhauser G., Haefliger J.A., Nicod P., Waeber G., Abderrahmani A.
ISSN
0006-291X
Statut éditorial
Publié
Date de publication
2002
Peer-reviewed
Oui
Volume
295
Numéro
1
Pages
174-81
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't - Publication Status: ppublish
Résumé
Macrophage migration inhibitory factor (MIF) is an important regulator of glucose homeostasis. In pancreatic beta-cells, MIF expression is regulated by glucose and its secretion potentiates the glucose-induced insulin secretion. The molecular mechanisms by which glucose mediates its effect on MIF expression are not elucidated. Herein, we report that incubating the differentiated insulin-secreting cell line INS-1 in high glucose concentration increases MIF transcriptional activity as well as the reporter gene activity driven by the -1033 to +63 bp fragment of the MIF promoter. A minimal region located between -187 and -98 bp of this promoter sequence contributes both to basal activity and glucose-responsiveness of the gene. Within this promoter region, two cis-binding sequences were identified by mobility shift assays and footprinting experiments. Both cis-elements interact with nuclear proteins expressed specifically in insulin-secreting cells. In conclusion, we identified a minimal region of the MIF promoter which contributes to the glucose stimulation of the mif gene in insulin-secreting cells.
Mots-clé
Animals, Base Sequence, Binding Sites, Cell Line, DNA-Binding Proteins, Glucose, Insulin, Islets of Langerhans, Macrophage Migration-Inhibitory Factors, Molecular Sequence Data, Promoter Regions, Genetic, RNA, Messenger, Transcriptional Activation
Pubmed
Web of science
Création de la notice
17/11/2008 9:57
Dernière modification de la notice
20/08/2019 15:14
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