Abstract
Restoration of regulated insulin secretion is the ultimate goal of therapy for type 1 diabetes. Here, we show that, unexpectedly, somatic ablation of Foxo1 in Neurog3 + enteroendocrine progenitor cells gives rise to gut insulin-positive (Ins +) cells that express markers of mature β cells and secrete bioactive insulin as well as C-peptide in response to glucose and sulfonylureas. Lineage tracing experiments showed that gut Ins + cells arise cell autonomously from Foxo1-deficient cells. Inducible Foxo1 ablation in adult mice also resulted in the generation of gut Ins + cells. Following ablation by the β-cell toxin streptozotocin, gut Ins + cells regenerate and produce insulin, reversing hyperglycemia in mice. The data indicate that Neurog3 + enteroendocrine progenitors require active Foxo1 to prevent differentiation into Ins + cells. Foxo1 ablation in gut epithelium may provide an approach to restore insulin production in type 1 diabetes.
Original language | English (US) |
---|---|
Pages (from-to) | 406-412 |
Number of pages | 7 |
Journal | Nature Genetics |
Volume | 44 |
Issue number | 4 |
DOIs | |
State | Published - Apr 2012 |
ASJC Scopus subject areas
- Genetics