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- W4306989337 abstract "Abstract Diabetes is a multifactorial disorder characterized by loss or dysfunction of pancreatic β-cells. β-cells are heterogeneous, exhibiting different glucose sensing, insulin secretion and gene expression. They communicate with other endocrine cell types via paracrine signals and between β-cells via gap junctions. Here, we identify the importance of signaling between β-cells via the extracellular signal WNT4. We show heterogeneity in Wnt4 expression, most strikingly in the postnatal maturation period, Wnt4 -positive cells, being more mature while Wnt4- negative cells are more proliferative. Knock-out in adult β-cells shows that WNT4 controls the activation of calcium signaling in response to a glucose challenge, as well as metabolic pathways converging to lower ATP/ADP ratios, thereby reducing insulin secretion. These results reveal that paracrine signaling between β-cells is important in addition to gap junctions in controling insulin secretion. Together with previous reports of WNT4 up-regulation in obesity our observations suggest an adaptive insulin response coordinating β-cells." @default.
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- W4306989337 date "2022-10-21" @default.
- W4306989337 modified "2023-10-14" @default.
- W4306989337 title "Wnt4 is heterogeneously activated in maturing β-cells to control calcium signaling, metabolism and function" @default.
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- W4306989337 doi "https://doi.org/10.1038/s41467-022-33841-5" @default.
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