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Gerdes, J.M. ; Christou-Safina, S.* ; Xiong, Y.* ; Moede, T.* ; Moruzzi, N. ; Karlsson-Edlund, P.* ; Leibiger, B.* ; Leibiger, I.* ; Ostenson, C.G.* ; Beales, P.* ; Berggren, P.O.*

Ciliary dysfunction impairs beta-cell insulin secretion and promotes development of type 2 diabetes in rodents.

Nat. Commun. 5:5308 (2014)
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Type 2 diabetes mellitus is affecting more than 382 million people worldwide. Although much progress has been made, a comprehensive understanding of the underlying disease mechanism is still lacking. Here we report a role for the β-cell primary cilium in type 2 diabetes susceptibility. We find impaired ​glucose handling in young ​Bbs4−/− mice before the onset of obesity. Basal body/ciliary perturbation in murine pancreatic islets leads to impaired first phase insulin release ex and in vivo. ​Insulin receptor is recruited to the cilium of stimulated β-cells and ciliary/basal body integrity is required for activation of downstream targets of insulin signalling. We also observe a reduction in the number of ciliated β-cells along with misregulated ciliary/basal body gene expression in pancreatic islets in a diabetic rat model. We suggest that ciliary function is implicated in insulin secretion and insulin signalling in the β-cell and that ciliary dysfunction could contribute to type 2 diabetes susceptibility.
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Publication type Article: Journal article
Document type Scientific Article
Language english
Publication Year 2014
HGF-reported in Year 2014
ISSN (print) / ISBN 2041-1723
e-ISSN 2041-1723
Quellenangaben Volume: 5, Issue: , Pages: , Article Number: 5308 Supplement: ,
Publisher Nature Publishing Group
Publishing Place London
Reviewing status Peer reviewed
POF-Topic(s) 90000 - German Center for Diabetes Research
30201 - Metabolic Health
Research field(s) Helmholtz Diabetes Center
PSP Element(s) G-501900-233
G-502300-001
G-501900-231
PubMed ID 25374274
Erfassungsdatum 2014-10-28