| First Author | Chong ACN | Year | 2024 |
| Journal | Nat Chem Biol | Volume | 20 |
| Issue | 5 | Pages | 566-576 |
| PubMed ID | 37945898 | Mgi Jnum | J:355336 |
| Mgi Id | MGI:7564335 | Doi | 10.1038/s41589-023-01466-4 |
| Citation | Chong ACN, et al. (2023) Checkpoint kinase 2 controls insulin secretion and glucose homeostasis. Nat Chem Biol |
| abstractText | After the discovery of insulin, a century ago, extensive work has been done to unravel the molecular network regulating insulin secretion. Here we performed a chemical screen and identified AZD7762, a compound that potentiates glucose-stimulated insulin secretion (GSIS) of a human beta cell line, healthy and type 2 diabetic (T2D) human islets and primary cynomolgus macaque islets. In vivo studies in diabetic mouse models and cynomolgus macaques demonstrated that AZD7762 enhances GSIS and improves glucose tolerance. Furthermore, genetic manipulation confirmed that ablation of CHEK2 in human beta cells results in increased insulin secretion. Consistently, high-fat-diet-fed Chk2(-/-) mice show elevated insulin secretion and improved glucose clearance. Finally, untargeted metabolic profiling demonstrated the key role of the CHEK2-PP2A-PLK1-G6PD-PPP pathway in insulin secretion. This study successfully identifies a previously unknown insulin secretion regulating pathway that is conserved across rodents, cynomolgus macaques and human beta cells in both healthy and T2D conditions. |
