Store-operated Ca2+ entry: a key component of the insulin secretion machinery.

Details

Serval ID
serval:BIB_37A8D5B70DAF
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Store-operated Ca2+ entry: a key component of the insulin secretion machinery.
Journal
Journal of molecular endocrinology
Author(s)
Sabourin J., Allagnat F.
ISSN
1479-6813 (Electronic)
ISSN-L
0952-5041
Publication state
Published
Issued date
04/2016
Peer-reviewed
Oui
Volume
57
Number
3
Pages
F35-F39
Language
english
Notes
Publication types: Review ; Journal Article
Publication Status: ppublish
Abstract
Normal plasma glucose level is ensured by the action of insulin, the major hypoglycemic hormone. Therefore, it is not surprising that insulin release from pancreatic β-cells of the islets of Langerhans is controlled by an array of balanced mechanisms in which glucose plays the leading role. Glucose triggers insulin secretion through the well-described pathway of ATP-driven closure of ATP-sensitive potassium channels (KATP), depolarization of the plasma membrane, and opening of the voltage-dependent Ca(2+) channels (VDCC). The subsequent rapid rise in cytoplasmic free Ca(2+) concentration triggers insulin exocytosis. However, despite more than 40 years of investigation, certain aspects of the intracellular Ca(2+) responses to glucose and secretagogues remain unexplained, suggesting the involvement of additional Ca(2+) channels. Here, we discuss the emerging role of store-operated Ca(2+) channels carried by Orai1 and transient receptor potential canonical 1 (TRPC1) proteins and regulated by the stromal interaction molecule 1 (STIM1) in the control of glucose-induced insulin secretion. The role of other voltage-independent cation channels formed by other members of the TRP channels family is also addressed.

Pubmed
Web of science
Open Access
Yes
Create date
10/04/2017 19:31
Last modification date
20/08/2019 14:26
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