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Diabetes is one of the most challenging health concerns facing society. Available drugs treat the symptoms but there is no cure. This presents an urgent need to better understand human diabetes in order to develop improved treatments or target remission. New disease models need to be developed that more accurately describe the pathology of diabetes. Organoid technology provides an opportunity to fill this knowledge gap. Organoids are 3D structures, established from pluripotent stem cells or adult stem/progenitor cells, that recapitulate key aspects of the in vivo tissues they mimic. In this review we briefly introduce organoids and their benefits; we focus on organoids generated from tissues important for glucose homeostasis and tissues associated with diabetic complications. We hope this review serves as a touchstone to demonstrate how organoid technology extends the research toolbox and can deliver a step change of discovery in the field of diabetes.

Taken together, our observations identify the islet Y receptors as promising targets for the preservation of beta-cell mass. As such, targeting these receptors could help to maintain beta-cell mass in both type 1 and type 2 diabetes, and may also be useful for improving islet transplantation outcomes.

The advent of near physiological organoid technology has produced a step change in our understanding of stem cells and has provided the research community with a powerful new cell based tool to model human physiology and disease. We review the pros and cons of intestinal organoid culture systems. The molecular and genetic tools to manipulate them and how they are being used to answer fundamental questions in metabolic research, including the function of enteroendocrine cells in health and disease.

The cover image, by Zara J. Franklin et al., is based on the Original Article Islet neuropeptide Y receptors are functionally conserved and novel targets for the preservation of beta‐cell mass, DOI: .

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