The present invention provides a method of more efficiently producing
pancreas cells, particularly
pancreatic hormone-producing cells, a method of stably producing
pancreas cells in a large amount by more efficiently inducing differentiation of stem cells into
pancreas cells, a medicament containing a pancreas cells and a
screening method using the cells.A method of producing
pancreatic hormone-producing cells, including subjecting stem cells to the following steps (1)-(4):(1) a step of cultivating stem cells in a medium containing an activator of
activin receptor-like
kinase-4,7 and a GSK3 inhibitor(2) a step of cultivating the cells obtained in the aforementioned step (1) in a medium containing an activator of
activin receptor-like
kinase-4,7(3) a step of cultivating the cells obtained in the aforementioned step (2) in a medium containing any one or more kinds selected from the group consisting of (a)
retinoic acid receptor agonists, (b) at least one kind selected from the group consisting of inhibitors of AMP-activated
protein kinase and / or
activin receptor-like kinase-2,3,6, and BMP antagonists, and (c) inhibitors of activin
receptor-like kinase-4,5,7(4) a step of cultivating the cells obtained in the aforementioned step (3).