Researchers at Lund University have mapped the epigenome of pancreatic alpha and beta cells from 24 individuals, some with type 2 diabetes and some without. The study, published in Nature Metabolism, identified DNA methylation patterns that regulate the production of insulin and glucagon.
Key Findings
- The research analyzed epigenetic patterns in pancreatic alpha and beta cells to identify regulatory mechanisms.
- DNA methylation was found to regulate genes involved in insulin and glucagon production.
- In cultured beta cells, laboratory alterations to DNA methylation near the insulin and glucagon genes directly affected gene activity.
- The transcription factor ONECUT2 was found to be epigenetically elevated in beta cells from individuals with type 2 diabetes. Elevated levels of ONECUT2 were associated with impaired beta cell energy production and insulin release.
Implications and Future Research
"This study identified which regions regulate insulin and glucagon production through DNA methylation." — Charlotte Ling, Professor of Epigenetics at Lund University
- Ling stated that the findings may offer the opportunity to develop epigenetic-based treatments.
- She also noted that the findings provide a deeper understanding of beta cell dysfunction in diabetes, potentially leading to personalized treatment targets.
- The researchers plan to investigate which epigenetic changes can be reversed and whether editing DNA methylation can help beta cells regain function in diabetes.