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- W2583996845 abstract "Abstract β-arrestins are critical signalling molecules that regulate many fundamental physiological functions including the maintenance of euglycemia and peripheral insulin sensitivity. Here we show that inactivation of the β-arrestin-2 gene, barr2 , in β-cells of adult mice greatly impairs insulin release and glucose tolerance in mice fed with a calorie-rich diet. Both glucose and KCl-induced insulin secretion and calcium responses were profoundly reduced in β-arrestin-2 (barr2) deficient β-cells. In human β-cells, barr2 knockdown abolished glucose-induced insulin secretion. We also show that the presence of barr2 is essential for proper CAMKII function in β-cells. Importantly, overexpression of barr2 in β-cells greatly ameliorates the metabolic deficits displayed by mice consuming a high-fat diet. Thus, our data identify barr2 as an important regulator of β-cell function, which may serve as a new target to improve β-cell function." @default.
- W2583996845 created "2017-02-10" @default.
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- W2583996845 date "2017-02-01" @default.
- W2583996845 modified "2023-10-14" @default.
- W2583996845 title "β-arrestin-2 is an essential regulator of pancreatic β-cell function under physiological and pathophysiological conditions" @default.
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- W2583996845 doi "https://doi.org/10.1038/ncomms14295" @default.
- W2583996845 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5296650" @default.
- W2583996845 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/28145434" @default.