New single-cell atlas reveals the plasticity of the human pancreas

An international research team, led by the Berlin Institute of Health at Charité, has developed the most extensive single-cell atlas of the human pancreas to date. This Human Cell Atlas project, coordinated by Professor Roland Eils, analyzed over 4 million cells and cell nuclei sourced from pancreatic tissue samples of 57 individuals. The atlas provides a comprehensive view of pancreatic development and disease, from fetal development to samples from individuals with type 2 diabetes.

Utilizing advanced single-cell and multiomics technologies, researchers mapped gene expression, epigenetic regulation, and spatial organization of pancreatic cells with unparalleled precision. Published in Cell Metabolism, the study uncovers a novel population of highly adaptable centroacinar cells, which lie at the junction between acinar cells and pancreatic ducts.

These cells exhibit molecular traits akin to early developmental stages, indicating their ability to change identity—a quality that may influence the pancreas' response to stress and tissue regeneration.

The atlas also reveals the intricate development of endocrine and exocrine cell lineages within the pancreas. Endocrine cells, responsible for hormone production that regulates blood glucose, and exocrine cells, which secrete digestive enzymes, are explored in detail. Notably, distinct epigenetic states among insulin-producing beta cells were identified, along with characteristic alterations in their regulatory programs linked to type 2 diabetes.

Experiments exposing healthy pancreatic islets to elevated glucose levels demonstrated that various pancreatic cell types react differently to metabolic stress. These insights offer new perspectives on how pancreatic cellular composition and function evolve in metabolic disease.

Professor Christian Conrad, senior author of the study, emphasizes that this atlas allows for the first-time observation of human pancreatic cells' development across the lifespan and how their identity transforms in disease. The research provides a crucial foundation for understanding diabetes mechanisms and paving the way for novel regenerative therapeutic strategies.

The dataset generated through this project serves as a valuable resource for the global research community. It enables scientists worldwide to further investigate cellular mechanisms behind metabolic diseases, regeneration, and tissue plasticity. Ultimately, these findings could lead to enhanced diagnostic methods and drive the development of innovative therapeutic approaches for type 2 diabetes and regenerative medicine.